CN100406676C - Underground gasification production mine - Google Patents
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- CN100406676C CN100406676C CNB2005100630473A CN200510063047A CN100406676C CN 100406676 C CN100406676 C CN 100406676C CN B2005100630473 A CNB2005100630473 A CN B2005100630473A CN 200510063047 A CN200510063047 A CN 200510063047A CN 100406676 C CN100406676 C CN 100406676C
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Abstract
The present invention relates to an underground gasification production mine which belongs to the field of underground coal gasification production and comprises a mine developing system, a mine gas delivering system and an underground coal gasification extracting system. According to requirements of underground coal gasification, the present invention provides an independent underground gasification production mine to be specially used for producing coal gas in an underground coal gasification mode. In the present invention, the mine gas delivering system is built and is provided with a special mine channel and a special pipe, and the mine gas delivering system is suitable for the bulk delivery of coal gas, oxygen and steam and is safely isolated from the mine developing system. A plurality of underground coal gasification extracting sections are arranged, an underground gasification furnace group is arranged in each of the sections, and direct gasification furnace monitoring technology and the regulating and controlling technology of sectional isolation for breaking pipes to inject liquid are adopted to achieve the purposes of the large-scale production of coal gas as well as the bistability of quality and yield.
Description
Technical field
The invention belongs to the underground coal gasification(UCG) production field, particularly a kind of underground gasification production mine.
Background technology
People seldom or do not produce the underground gasification production mine of coal gas and study being specifically designed to the underground coal gasification(UCG) mode always for a long time.Though similarly patent has: " long-passage and large-section underground coal gasification in mine (publication number CN 1169501A) ", " coal-bed gasifying method of gas-injection point backing while changing tube (publication number CN 1121138A) " etc., study establishing the shaft underground gasification technology, but the overall plan that does not all relate to the mine main that gasifies has big distance with large-scale production.
Summary of the invention
The objective of the invention is needs, independently underground gasification production mine is set, produce coal gas with the underground coal gasification(UCG) mode specially according to underground coal gasification(UCG).Technical scheme of the present invention is achieved in that
A kind of underground gasification production mine is characterized in that, underground gasification production mine comprises that development, mine gas are carried, three big systems of underground coal gasification(UCG) back production;
1) development system is made of main shaft, auxiliary shaft, shaft station and Da Xiang, concentrated upper and lower mountain, district station and crossdrift, electric substation, pump house and sump;
Wherein main shaft, auxiliary shaft through the shaft station and big lane be connected with concentrated upper and lower mountain, district station and crossdrift are to concentrate the branch of upper and lower mountain at each section, electric substation, pump house and sump are laid in shaft station and the big lane;
2) the mine gas induction system carries main channel, coal gas to carry main channel, switch door chamber, the water vapour person in charge, the gasifying agent preparation system on ground, the simple and easy purifier of coal gas, coal gas to concentrate heat sink to constitute by oxygen;
Described oxygen carries the main channel to comprise that oxygen carries pit shaft, oxygen to carry main lane or oxygen to be responsible for; Described coal gas carries the main channel to comprise that coal gas carries pit shaft, coal gas to carry main lane or coal gas to be responsible for;
Wherein, it is that oxygen is carried the branch of pit shaft to each section that oxygen is carried main lane, and it is that coal gas is carried the branch of pit shaft to each section that coal gas is carried main lane; Oxygen carries pit shaft, coal gas to carry pit shaft, oxygen to carry main lane, coal gas to carry to be respectively equipped with on the main lane switch door chamber, in establish two pass switch door;
Carry and need be not less than under the situation of 800mm with caliber at oxygen or coal gas, it is that oxygen carries pit shaft and oxygen to carry main lane that described oxygen is carried the main channel, and it is that coal gas carries pit shaft and coal gas to carry main lane that described coal gas is carried the main channel; Need to use under the situation of caliber less than 800mm at oxygen or coal gas conveying, it is that oxygen is responsible for that described oxygen is carried the main channel, and the described oxygen person in charge is laid in pit shaft, crossdrift or the parking lot; It is that coal gas is responsible for that described coal gas is carried the main channel, and described coal gas is responsible for and is laid in the roadway of mine air return system;
Described water vapour is responsible for and is laid in the roadway of mine air return system;
Described gasifying agent preparation system, the simple and easy purifier setting of coal gas on the ground, gasifying agent preparation system and water vapour are responsible for, oxygen is carried pit shaft or oxygen is responsible for and is connected; The simple and easy purifier of coal gas carries the pit shaft or the coal gas person in charge to be connected with coal gas; Coal gas concentrates heat sink to be arranged on the head end that coal gas carries main lane or coal gas to be responsible for;
It is vertical or inclined shaft or footrill that described main shaft, auxiliary shaft, oxygen carry pit shaft, coal gas to carry pit shaft;
3) the underground coal gasification(UCG) recovery system is made up of section and underground gasification furnace two parts:
Described section comprises centralized Control lane, return airway, sluicing lane, mechanical chamber, section Monitoring and Controlling station, oxygen conveying subchannel, coal gas conveying subchannel, water vapour arm, hydraulic power pipe, the Monitoring and Controlling communications cable, safe isolation strip;
Described centralized Control lane is positioned at the section top edge, and head end and district station and crossdrift are joined, and end is connected with the return airway upper end in the section boundary; It is inboard and in parallel that return airway is positioned at the section boundary, is connected between centralized Control lane and the sluicing lane; The sluicing lane is positioned at the section lower limb, arises from the return airway end opening, terminates in to concentrate upper and lower mountain or district station and crossdrift; Machinery chamber and section Monitoring and Controlling station be arranged on centralized Control lane head end or near;
Carry and need be not less than under the situation of 800mm with caliber at oxygen or coal gas, it is that oxygen is carried offset that described oxygen is carried the subchannel, and it is that coal gas is carried offset that described coal gas is carried the subchannel; Need to use under the situation of caliber less than 800mm at oxygen or coal gas conveying, it is oxygen manifold that described oxygen is carried the subchannel; It is branch gas tube that described coal gas is carried the subchannel; Described oxygen manifold and branch gas tube are laid in the centralized Control lane;
Described oxygen carries subchannel and coal gas to carry the subchannel parallel with the centralized Control lane, divides in the position of both sides to be provided with, and oxygen is carried the subchannel head end to be connected to oxygen and carried the main channel, and end is an oxygen manifold; It is branch gas tube that coal gas is carried the subchannel head end, and the terminal coal gas that inserts is carried the main channel, and water vapour arm head end connects from water vapour and is responsible for, and end terminates in last gasifying agent control alcove; Described hydraulic power pipe is the hydraulic power carrier pipe, and the Monitoring and Controlling communications cable is a monitoring regulation and controlling of information pipeline, all is laid in the centralized Control lane; Described safe isolation strip is arranged on centralized Control lane downside and sluicing lane upside, and position in parallel, is that the filling water sandy soil of 2～3m constitute by width;
Described underground gasification furnace is laid in the section, adopt U type furnace structure, comprise gasifying agent passage, gasifying agent control alcove, gasification face, gas passage, coal gas control alcove, hybrid gasification agent pipe, band air door divider wall, fire dam, spray washing cooling water curtain.
Described gasifying agent passage is laid in and is parallel in the coal seam of concentrating upper and lower mountain, and the upper end joins through gasifying agent control alcove and centralized Control lane, and the lower end terminates in gasification face; Described gas passage is laid in and is parallel in the coal seam of concentrating upper and lower mountain, and the upper end joins through coal gas control alcove and centralized Control lane, is terminated at the sluicing lane down; Described gasification face is laid in the safe isolation strip upside and coal seam in parallel of sluicing lane side, and head end is connected to gasifying agent passage lower end, and end is connected to gas passage; Described hybrid gasification agent pipe is installed in the total length of gasifying agent passage.
Described gasifying agent passage and gas passage are provided with band air door divider wall or fire dam by the both sides of safe isolation strip, carry offset and coal gas to carry offset and joint, centralized Control lane that the twice fire dam is set at oxygen, in the bottom of gas passage, the U-shaped water seal is set by both sides, safe isolation strip band air door divider wall.
At the described gas passage port of export 3～5 annular spray washing cooling water curtains are set.
The invention has the beneficial effects as follows:
1) independently underground gasification production mine is set, produces coal gas with the underground coal gasification(UCG) mode specially.
2) set up the mine gas induction system, special-purpose roadway and pipeline are set, the super large tolerance that adapts to coal gas, oxygen, water vapour is carried, with the implement security isolation of development system.
3) a plurality of underground coal gasification(UCG) back production sections are set, in each section, arrange the underground gasification furnace group, adopt direct monitoring technology of gasification furnace and segmentation to isolate broken pipe injecting control technique, accomplish large-scale production coal gas, and can realize the bistable of quality and output.
Below in conjunction with drawings and Examples the present invention is made a detailed description.
Description of drawings
Fig. 1 is the floor map of a single-blade of underground gasification production mine of the present invention;
Fig. 2 is the principal section schematic diagram of underground gasification production mine of the present invention;
Fig. 3 arranges schematic diagram for underground gasification production mine section individual layer one wing of the present invention.
The specific embodiment
Referring to Fig. 1 and Fig. 2, wherein, main shaft 1, auxiliary shaft 2, concentrate in shaft station and big lane 3, go down the hill 4, district cross-cut and parking lot 5, electric substation 6, pump house and sump 7, oxygen is carried pit shaft 8, and coal gas is carried pit shaft 9, and oxygen is carried main lane 10, the oxygen person in charge 10 ', coal gas is carried main lane 11, the coal gas person in charge 11 ', switch door chamber 12, water vapour is responsible for 13, gasifying agent preparation system 14, simple and easy purifier 15, centralized Control lane 16, return airway 17, sluicing lane 18, mechanical chamber 19, section Monitoring and Controlling station 20, oxygen is carried offset 21, and coal gas is carried offset 22, steam arm 23, oxygen manifold 24, branch gas tube 25, safe isolation strip 28, gasifying agent passage 29, gasification face 31, gas passage 32, hybrid gasification agent pipe 34, coal gas is concentrated heat sink 38.
The present invention opens up mode based on vertical, for expressing the slope development mode, is concentrating the 4 top with dashed lines of going up a hill to mark inclines 1,2.Consider multiple seam, run through each layer with the section crossdrift.The developing, each gas transmission system and the correlation that have shown underground gasification production mine among the figure.Go up a hill 4 can exposure ground or when use slope development when concentrating, and every 2～3 sections electric substation 6 and pump house and sump 7 should be set, and is the simplification drawing, and this figure is omitted.
Referring to Fig. 3, be a typical section layout plan, shown each gas transmission system and relation in the section, and the parallel connection of a plurality of underground gasification furnaces relation.Wherein the hydraulic power pipe 26, the Monitoring and Controlling communications cable 27, gasifying agent control alcove 30, coal gas control alcove 33, air door divider wall 35, fire dam 36, spray washing cooling water curtain 37.
1) main shaft 1 of the development system shown in Fig. 1,2,3, auxiliary shaft 2, shaft station and big lane 3, to concentrate upper and lower mountain (is similar title pit shaft during along layer slope development, down with) 4, district station and crossdrift 5, electric substation 6, pump house and sump 7, form subsystems such as service hoisting, transportation, power supply, row's water supply, ventilation, security monitoring.Except that having cancelled Coal Transport, transhipment, Hoisting System, be analogous to the common coal mine main, function is to provide system's support and service to the Gas Production and the exploiting field construction that continues.
According to ground environment, geological conditions and production scale, pit shaft can be selected vertical, inclined shaft or footrill.Selecting for use and compound mode of above-listed roadway kind will can all be provided with or the part setting as required in accordance with the selection rule in common colliery.
2) the mine gas induction system shown in Fig. 1,2,3 is that independent system and developing system implement security are isolated.
Consider that oxygen or oxygen enrichment conveying capacity in coal gas and the gasifying agent are very big, carrying and to lay special-purpose oxygen and to carry pit shaft 8, coal gas conveying pit shaft 9, oxygen to carry main lane 10 and coal gas to carry main lane 11 delivering oxygens and coal gas with caliber greater than the 800mm section.Control with the special two pass switch door of being located in the switch door chamber 12 in the gas transmission roadway.
Carry to need with caliber less than the 800mm section, change respectively by oxygen be responsible for 10 ' and coal gas be responsible for 11 ' delivering oxygen and coal gas, pipeline laying is in pit shaft and crossdrift or parking lot.Water vapour in the gasifying agent is carried to be needed insulation and needs to use caliber less, therefore carries with utilidor.Water vapour is responsible for 13 and is located at separately in the roadway of mine air return system, but supplying nitrogen or other gas when needing.The control that pipeline gas is carried is with automatically controlled hydraulic operated valve door.
Gasifying agent is provided by the gasifying agent preparation system 14 on ground, and coal gas is extracted ground out and promptly sent into simple and easy purifier 15, and it is stand-by to be pressed into gas tank after the processing.
3) the underground coal gasification(UCG) recovery system shown in Fig. 1,2,3 is divided into section and underground gasification furnace two parts.
A. section is the formant in exploiting field, and length is exploiting field single-blade length, and the inclination width is advisable to be no more than 360m.Establish centralized Control lane 16 at the section top edge, return airway 17 is established in the section boundary, and the section lower limb is established sluicing lane 18.
1. centralized Control lane 16 is key tunnels of section, and head end and district station and crossdrift 5 are joined, and end is connected with return airway 17 upper ends in the section boundary.Total length is laid water vapour arm 23, hydraulic power pipe 26, the Monitoring and Controlling communications cable 27, and the part section is set up oxygen manifold 24, branch gas tube 25.
2. return airway 17 is positioned at inboard, section boundary and in parallel, is connected between centralized Control lane 16 and the sluicing lane 18.Function is that the weary wind in the centralized Control lane 16 is sent into sluicing lane 18.
3. the lane 18 that sluices is positioned at the lower limb of section, arises from return airway 17 end openings, terminates in to concentrate upper and lower mountain 4 or district station and crossdrift 5.Function is to tackle gasification zone sluicing and import sump 7 in the gravity flow mode.In the storehouse water except that supply with gas washing cooling with, redundance is discharged ground and is done to discharge after harmless processings.Another function is the double section single-blade return airway of doing.
4. centralized Control lane 16 head ends or near mechanical chamber 19 and section Monitoring and Controlling station 20 are set, install Hydraulic Station and anchor spraying equipment in the mechanical chamber 19, install information processing, storage, the display unit of monitoring system in the section Monitoring and Controlling station 20.
5. carrying at oxygen and coal gas needs with caliber greater than the 800mm section, and the position at a distance of about 10m parallel with centralized Control lane 16 is provided with oxygen respectively and carries offset 21 and coal gas to carry offset 22.Need be at gas flow with caliber less than the 800mm section, change respectively by oxygen manifold 24 and branch gas tube 25 and substitute, two sub tube installations are in centralized Control lane 16.
6. oxygen is carried offset 21 head ends to be connected to oxygen and is carried main lane 10, and end terminates in oxygen manifold 24, and oxygen manifold 24 ends then terminate in last gasifying agent control alcove 30, and function is to be the gasification furnace delivering oxygen.
7. branch gas tube 25 head ends arise from the gas-pipe line in last coal gas control alcove 33, and end is connected to coal gas and carries offset 22 head ends.Coal gas carries offset 22 to be advisable to be located in the rock stratum, and head end is connected to branch gas tube 25, and the terminal coal gas that inserts is carried main lane 11, and function is to be gasification zone output coal gas.
8. water vapour arm 23 head ends are received and are laid in the water vapour conveying person in charge 13 who concentrates in upper and lower mountain 4 or district station and the crossdrift 5, and end terminates in last gasifying agent control alcove 30, and function is to be gasification furnace transporting water steam.
9. hydraulic power pipe 26 head ends are connected to Hydraulic Station, and end terminates in last gasifying agent control alcove 30, for the valve that respectively surges provides power.Track is connected to district station and crossdrift 5, for the gasification zone provides transportation service.
B. underground gasification furnace is laid in the section, is the place that produces coal gas, mainly adopts U type furnace structure.Constitute by gasifying agent passage 29, gasifying agent control alcove 30, gasification face 31, gas passage 32, coal gas control alcove 33, hybrid gasification agent pipe 34 etc.Adopt underground gasification furnace to adjust control technology, make gasifier operation in perfect condition.
1. gasifying agent passage 29 and gas passage 32, generally be parallel to and concentrate upper and lower mountain and be laid in the coal seam, the upper end joins through gasifying agent control alcove 30, coal gas control alcove 33 and centralized Control lane 16 respectively, gasifying agent passage 29 lower ends terminate in gasification face 31, and gas passage is terminated at sluicing lane 18 32 times.Gasification face 31 is laid in the coal seam of sluicing lane 18 upsides, and is parallel with sluicing lane 18 and keep suitable safe distance, head end to be connected to gasifying agent passage 29 lower ends, and end is connected to gas passage 32.
2. in each gasifying agent control alcove 30, oxygen catheter, steam conduit, gasifying agent blender are set, the hybrid gasification agent pipe 34 that picks out by blender, be laid in the gasifying agent passage 29, adopt segmentation to isolate broken pipe injecting technology, gasification face 31 implementation phase formula follow-up modes are injected gasifying agent.Two conduits and hybrid gasification agent pipe 34 are all installed electrically controlled and hydraulically valve and metering direct-reading instrument and respective sensor, in order to monitoring and the regulation and control to gas oxygen ratio and flow.
3. in each coal gas control alcove 33, establish the coal gas output duct, carry offset 22 to be connected with branch gas tube 25 or coal gas gas passage 32, in order to output coal gas.Installing electrically controlled and hydraulically valve and metering direct-reading instrument and respective sensor and the coal gas interface of sampling on the conduit is in order to the monitoring regulation and control of gas flow and the collection of gas composition sample.
4. gasifying agent enters gasification face with suitable intensity and contacts with red-hot rib, generates coal gas through physical change and chemical reaction.Under the effect of gasifying agent malleation and gas exit negative pressure, coal gas enters gas transportation system through gas passage 32, coal gas delivery conduit.
5. gasification furnace district trickle, steam condensate (SC), gasification reaction are separated out water, gas washing cooling water etc., come together in gas passage 32, and the U-shaped water seal of two-track tape air door divider wall 35 bottoms through being located at its lower end flows into sluicing lane 18.
C. 1. having constituted complete coal underground gasifying furnace to a 5. full content among the above-mentioned b, is elementary cell independent, sealing.Because all multifactor impacts, gasification furnace form and compound mode have multiple variation, typically have following several:
1. directly two stoves are combined a shared gasifying agent passage 29 and hybrid gasification agent pipe 34, a perhaps shared gas passage 32.
2. according to exploiting field condition and needs,, lay a plurality of gasification furnaces simultaneously in section, form the underground gasification furnace group with adjacent parallel connection or non-adjacent parallel connection (be analogous to jump and adopt) mode.But (except the two stove amalgamators) will keep personal distance and sealing between two stoves, accomplish independent operating separately, are independent of each other.
3. in same mine, can lay a plurality of exploiting fields and produce simultaneously, in same exploiting field, can lay a plurality of sections and produce simultaneously, in a wing of same section, can lay a plurality of underground gasification furnaces and produce.The underground gasification furnace group that forms of kind mode is gasified simultaneously thus, is the most important means that realize gas quality and output bistable and extensive Gas Production.
D. be timely and effective regulation and control gasification operation, guarantee safety in production, full mine information gathering process control system is set, they are:
1. adopt the underground gasification furnace operating state monitoring device, directly gather the state parameter of gasifier operation status information or gasification furnace periphery.
2. being located at full mine measure monitor direct-reading instrument place everywhere, all will install similar parameter sensor, valve and switch door will be installed the open and-shut mode displacement transducer, gather all kinds of parameters, status information.
3. according to the relevant security regulations in colliery, install harmful gas content, ventilation parameter and safety device state sensor, constitute the mine safety monitoring system at the key position of full mine.
4. to the Gas Production running state information and the mining safety monitoring information of above-listed collection, be sent to respectively in the information processing of installing in the total Control Room of Centralized Monitoring chamber and ground, storage, the display unit through client cables, regulate and control Gas Production according to this and be in ideal and safe condition.
5. respectively at centralized Control lane downside and sluicing lane upside, and with its parallel position at a distance of about 20m and with it, at the coal seam overall height and extend to top board 0.5m scope, the water sandy soil filling safety isolation strip 28 of width 2～3m is set.Each is communicated with the inboard at place in the gasification furnace tunnel and the external world, and two-track tape air door divider wall 35 or fire dam 36 are set.Divider wall bottom in that needs sluice is provided with the U-shaped water seal, realizes safety isolation and sealing that gasification furnace is external.
6. at each gas passage 32 port of export 3～5 annular spray washing cooling water curtains 37 are set, carrying main lane 11 or coal gas to be responsible for 11 ' head end at coal gas is provided with the concentrated heat sink 38 of coal gas indirect type, realizes that preliminary purification, cooling and the non high temperature to coal gas carried.
Claims (4)
1. a underground gasification production mine is characterized in that, underground gasification production mine comprises that development, mine gas are carried, three big systems of underground coal gasification(UCG) back production;
1) development system is made of main shaft (1), auxiliary shaft (2), shaft station and Da Xiang (3), concentrated upper and lower mountain (4), district station and crossdrift (5), electric substation (6), pump house and sump (7);
Wherein main shaft (1), auxiliary shaft (2) through the shaft station and Da Xiang (3) be connected with concentrated upper and lower mountain (4), district station and crossdrift (5) are to concentrate the branch of upper and lower mountain (4) at each section, and electric substation (6), pump house and sump (7) are laid among shaft station and the Da Xiang (3);
2) the mine gas induction system carries main channel, coal gas to carry main channel, switch door chamber (12), water vapour to be responsible for the gasifying agent preparation system (14) on (13), ground, the simple and easy purifier of coal gas (15), concentrated heat sink (38) formation of coal gas by oxygen;
Described oxygen carries the main channel to comprise that oxygen carries pit shaft (8), oxygen to carry main lane (10) or oxygen is responsible for (10 '); Described coal gas carries the main channel to comprise that coal gas carries pit shaft (9), coal gas to carry main lane (11) or coal gas is responsible for (11 ');
Wherein, it is that oxygen is carried the branch of pit shaft (8) to each section that oxygen is carried main lane (10), and it is that coal gas is carried the branch of pit shaft (9) to each section that coal gas is carried main lane (11); Oxygen carries pit shaft (8), coal gas to carry pit shaft (9), oxygen to carry main lane (10), coal gas to carry to be respectively equipped with on the main lane (11) switch door chamber (12), in establish two pass switch door;
Carry and to be not less than under the situation of 800mm with caliber at oxygen or coal gas, it is that oxygen carries pit shaft (8) and oxygen to carry main lane (10) that described oxygen is carried the main channel, and it is that coal gas carries pit shaft (9) and coal gas to carry main lane (11) that described coal gas is carried the main channel; Need to use under the situation of caliber less than 800mm at oxygen or coal gas conveying, it is that oxygen is responsible for (10 ') that described oxygen is carried the main channel, and the described oxygen person in charge (10 ') is laid in pit shaft, crossdrift or the parking lot; It is that coal gas is responsible for (11 ') that described coal gas is carried the main channel, and the described coal gas person in charge (11 ') is laid in the roadway of mine air return system;
Described water vapour is responsible for (13) and is laid in the roadway of mine air return system;
Described gasifying agent preparation system (14), the simple and easy purifier of coal gas (15) are provided with on the ground, and gasifying agent preparation system (14) is responsible for (13) with water vapour, oxygen carries the pit shaft (8) or the oxygen person in charge (10 ') to be connected; The simple and easy purifier of coal gas (15) carries the pit shaft (9) or the coal gas person in charge (11 ') to be connected with coal gas; Coal gas concentrates heat sink (38) to be arranged on the head end that coal gas is carried the main lane (11) or the coal gas person in charge (11 ');
It is vertical or inclined shaft or footrill that described main shaft (1), auxiliary shaft (2), oxygen carry pit shaft (8), coal gas to carry pit shaft (9);
3) the underground coal gasification(UCG) recovery system is made up of section and underground gasification furnace two parts:
Described section comprises centralized Control lane (16), return airway (17), sluicing lane (18), mechanical chamber (19), section Monitoring and Controlling station (20), oxygen conveying subchannel, coal gas conveying subchannel, water vapour arm (23), hydraulic power pipe (26), the Monitoring and Controlling communications cable (27), safe isolation strip (28);
Described centralized Control lane (16) is positioned at the section top edge, and head end and district station and crossdrift (5) are joined, and end is connected with return airway (17) upper end in the section boundary; It is inboard and in parallel that return airway (17) is positioned at the section boundary, is connected between centralized Control lane (16) and sluicing lane (18); Sluicing lane (18) is positioned at the section lower limb, arises from return airway (17) end opening, terminates in to concentrate upper and lower mountain (4) or district station and crossdrift (5); Machinery chamber (19) and section Monitoring and Controlling station (20) be arranged on centralized Control lane (16) head end or near;
Carry and need be not less than under the situation of 800mm with caliber at oxygen or coal gas, it is that oxygen is carried offset (21) that described oxygen is carried the subchannel, and it is that coal gas is carried offset (22) that described coal gas is carried the subchannel; Need to use under the situation of caliber less than 800mm at oxygen or coal gas conveying, it is oxygen manifold (24) that described oxygen is carried the subchannel; It is branch gas tube (25) that described coal gas is carried the subchannel; Described oxygen manifold (24) and branch gas tube (25) are laid in the centralized Control lane (16);
Described oxygen carries subchannel and coal gas to carry the subchannel parallel with centralized Control lane (16), divides in the position of both sides to be provided with, and oxygen is carried the subchannel head end to be connected to oxygen and carried the main channel, and end is oxygen manifold (24); It is branch gas tube (25) that coal gas is carried the subchannel head end, and the terminal coal gas that inserts is carried the main channel, and water vapour arm (23) head end connects from water vapour and is responsible for (13), and end terminates in last gasifying agent control alcove (30); Described hydraulic power pipe (26) is the hydraulic power carrier pipe, and the Monitoring and Controlling communications cable (27) is a monitoring regulation and controlling of information pipeline, all is laid in the centralized Control lane; Described safe isolation strip (28) is arranged on centralized Control lane (16) downside and sluicing lane (18) upside, and position in parallel, is that the filling water sandy soil of 2～3m constitute by width;
Described underground gasification furnace is laid in the section.
2. underground gasification production mine according to claim 1, it is characterized in that, described underground gasification furnace adopts U type furnace structure, comprises gasifying agent passage (29), gasifying agent control alcove (30), gasification face (31), gas passage (32), coal gas control alcove (33), hybrid gasification agent pipe (34), band air door divider wall (35), fire dam (36), spray washing cooling water curtain (37);
Described gasifying agent passage (29) is laid in and is parallel in the coal seam of concentrating upper and lower mountain (4), and alcove (30) is controlled and centralized Control lane (16) join through gasifying agent in the upper end, and the lower end terminates in gasification face (31); Described gas passage (32) is laid in and is parallel in the coal seam of concentrating upper and lower mountain (4), and alcove (33) is controlled and centralized Control lane (16) join through coal gas in the upper end, time is terminated at sluicing lane (18); Described gasification face (31) is laid in safe isolation strip (28) upside and coal seam in parallel of sluicing lane (18) side, and head end is connected to gasifying agent passage (29) lower end, and end is connected to gas passage (32); Described hybrid gasification agent pipe (34) is installed in the total length of gasifying agent passage (29).
3. underground gasification production mine according to claim 2, it is characterized in that, described gasifying agent passage (29) and gas passage (32) are provided with band air door divider wall (35) or fire dam (36) by the both sides of safe isolation strip (28), carry offset (21) and coal gas to carry offset (22) and joint, centralized Control lane (16) that twice fire dam (36) is set at oxygen, in the bottom of gas passage (32), the U-shaped water seal is set by safe isolation strip (28) both sides band air door divider walls (35).
4. underground gasification production mine according to claim 2 is characterized in that, at described gas passage (32) port of export 3～5 annular spray washing cooling water curtains (37) is set.
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| CN101864941B (en) * | 2010-03-23 | 2013-08-28 | 邓惠荣 | Ultra-deep coal underground gasification technology |
| CN101915122B (en) * | 2010-08-02 | 2011-12-28 | 中钢集团马鞍山矿山研究院有限公司 | Construction method of underground large water-flow mine emergency water sump |
| CN102486085B (en) * | 2010-12-01 | 2015-06-17 | 新奥气化采煤有限公司 | Gasifying agent transmission and distribution system and technology for underground gasification of carbon-containing organic matters |
| CN102536184A (en) * | 2012-01-17 | 2012-07-04 | 中国石油大学(华东) | Method for exploiting coal-bed gas of burned coal bed |
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