CN106761750B - Slot type recovery method is built in the longwell plane milling of half-edge coal seam longitudinal direction - Google Patents
Slot type recovery method is built in the longwell plane milling of half-edge coal seam longitudinal direction Download PDFInfo
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- CN106761750B CN106761750B CN201611217932.7A CN201611217932A CN106761750B CN 106761750 B CN106761750 B CN 106761750B CN 201611217932 A CN201611217932 A CN 201611217932A CN 106761750 B CN106761750 B CN 106761750B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Abstract
Slot type recovery method is built in half-edge coal seam longitudinal direction of the present invention longwell plane milling, belongs to steeply-inclined seam mining technical field；Technical problem to be solved is to provide a kind of steeply-inclined seam mining method that can be reduced labor intensity, improve working environment at coal mines, improve coal recovery rate；The technical solution used for：The first step is respectively arranged exploitation tunnel in coal seam upper and lower part；Second step slips mine hole by certain spacing construction is multiple, coal transportation system is arranged in tunnel is exploited in lower part；Third walks, and in the exploitation tunnel of top, is exploited using coal-cutting machinery, and it is complete that the coal mining between tunnel and lower part exploitation tunnel in addition to protection coal pillar is exploited on top；4th step carries out goaf filling；5th step repeats the first step to the 4th step, realizes that safety and high efficiency, the backfill of gangue low cost, ecological environment effective protection and the resource suitable development of half-edge coal seam utilize；The present invention is especially suitable for the exploitations of the half-edge coal seam of 2~20m of thickness.
Description
Technical field
Slot type recovery method is built in half-edge coal seam longitudinal direction of the present invention longwell plane milling, belongs to steeply-inclined seam mining technology neck
Domain, more particularly to the pit mining method for the half-edge coal seam that thickness is 2-20m.
Background technology
With the increase of exploitation of coal resources intensity, seam mining condition is increasingly sophisticated, and China each province faces worried
The mining problem of inclined seam.China's steeply-inclined seam mining mine has over one hundred place, is distributed mainly on Urumchi, Yao Jie, north
Luan, Xuzhou, long wide, Nan Tong, Zixing, more than 20 mining areas logical etc. greatly are opened in capital, Huainan.It is main in terms of steeply-inclined seam mining method
Form the three categories type based on blasting process, fully mechanized mining and hydromining technique, wherein the super high seam water of fully mechanized mining
Divide equally a section mining coal-mining method, high seam move towards longwall full-mechanized mining technique coal caving mining method and sliding top fine strain of millet holder Sub-Level Caving adopt
Coal method, the flexible shield mining in the false dip of blasting process, puppet of bowing tiltedly move towards the intensive coal-mining method of longwell segment level, tunnel
The hydraulic mining method of coal caving mining method and Tonghua, Jilin Province, Liaoning mining areas Nan Piaodeng achieves good application effect.Fully mechanized mining
Technique is mainly solved inclination angle and stablizes more than 20m, preservation more than 60 °, thickness by the stringent restriction of coal seam thickness and inclination angle
The mining problem of severe inclined thick coal seam, blasting process and hydromining technique can be applied to opening for thickness 2~20m half-edge coal seams
It adopts, but blasting process is low since by the way of coal blasting, there are coal recovery rates, labor intensity is big, underground work
The main problems such as bad environments；Hydromining technique using the high-pressure water jet coal breakage for being up to 20 MPa and using pipeline hydraulic due to transporting
Defeated part coal, production system energy loss is big in high pressure water flow cyclic process, and that there are water consumptions is big, power consumption is big, is produced into
This high main problem.On the other hand, in terms of working face Surrounding Rock Control, due to during steeply-inclined seam mining on goaf
Portion's country rock along inclined direction rolls after being caving（It is sliding）Dynamic filling lower part goaf so that face surrounding rock stability top is worst, middle part
Take second place, lower part it is best, asymmetry is presented along coal seam tendency direction in Face Ground Pressure Behavior feature, and the Surrounding Rock Control of working face is difficult
Degree is big, influences the production safety of working face.Therefore, the safety and high efficiency for how realizing thickness 2~20m half-edge coal seams is
The significant technology issues that coal in China industry faces.
Invention content
It is to provide one kind to reduce worker that the present invention, which overcomes the shortcomings of the prior art, technical problem to be solved,
Labor intensity improves working environment at coal mines, improves coal recovery rate, reduces water consumption and power consumption, simplified transportation system, reduction
Production cost, Optimization Packing space structure, simplify filling process system, reduce gangue filling cost, backfill ground gangue,
Three pushing coal of liberation is preserved the ecological environment, and it is longitudinally long effectively to control face surrounding rock, the half-edge coal seam of raising reliable degree
Slot type recovery method is built in wall plane milling.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：The longwell plane milling of half-edge coal seam longitudinal direction is built
Slot type recovery method, it is characterised in that carry out as steps described below：
The first step analyzes coal seam and coffer mechanics feature according to the occurrence condition of half-edge coal seam, rationally determines that exploitation is wide
The coal working faces master such as protection coal pillar between the interregional protection coal pillar of degree, level interval, strike length, mining of adjacent and adjacent phases
Technical parameter is wanted, according to these technical parameters, exploitation tunnel is respectively arranged in coal seam upper and lower part；
Second step slips mine according to coal working face important technological parameters by certain spacing multiple vertical satisfactions of constructing
Mine hole is slipped with equipment service requirement, it is described slip mine hole perforation top exploitation tunnel and lower part exploitation tunnel, in lower part exploitation lane
Coal transportation system is arranged in road, coal transportation system, which is located at, to slip below mine hole；
Third walks, and after slipping the construction completion of mine hole, in the exploitation tunnel of top, is exploited, is exploited using coal-cutting machinery
When to stay and set enough equipment operational safety protection coal pillars, adopt the coal that falls and slipped mine hole by described and exploited tunnel from lower part is slipped to
Coal transportation system, coal-cutting machinery cycle are mined, and top is exploited between tunnel and lower part exploitation tunnel in addition to protection coal pillar
Coal mining is complete；
4th step, according to strata control around longwang face and ground ecological environmental protection requirement, it is determined whether carry out goaf filling；
When needing to carry out goaf filling, according to goaf structural mechanics feature and mining, filling production technology arrangement, filling master is determined
Want technical parameter；The closed facility of mouth under constructing goaf in discarded lower part exploitation tunnel first, will using stowage unit
It is upper what is discarded after the filling slurries such as gangue are successively filled to the space in the discarded exploitation tunnel in lower part and goaf from bottom to top
Goaf closed facility suitable for reading is constructed in exploitation tunnel by portion, by sky of the filling slurries such as gangue full of the discarded exploitation tunnel in top
Between, realize the three-dimensional of goaf, ordering, full volumetric filling；
5th step repeats the first step to the 4th step, realizes safety and high efficiency, the bastard coal of thickness 2~20m half-edge coal seams
The backfill of stone low cost, ecological environment effective protection and resource suitable development utilize.
In the first step to the implementation process of the 5th step, according to coal seam country rock and the mechanical structure of goaf filling body
Signature analysis stays protection coal pillar between the adjacent phases of the interregional protection coal pillar of the mining of adjacent for setting 5~10m, 5~10m, it is ensured that work
Make face production safety.
Coal-cutting machinery in the third step is plane milling formula coalcutter, and plane milling formula coalcutter carries out the band-like downlink plane of horizontal bar
Milling exploits to form slot type goaf, adopts to certain depth, guarantee lower section and stays after setting the equipment operational safety protection coal pillar of 3~8m,
By elevator will dig milling formula coalcutter be promoted to top exploit tunnel, or through lower part connection roadway detour to top exploit tunnel into
The next cycle of row.
It is constructed from bottom to top using anti-well drilling machine in the mine hole that slips.
The coal transportation system is ribbon conveyer.
The present invention has the advantages that compared with prior art.
1, the present invention solves the safety and high efficiency of thickness 2~20m half-edge coal seams, the backfill of gangue low cost, life
The problem of state environment effective protection and resource suitable development utilize, and carried for the safety and high efficiency of conditions of similarity solid mineral deposit
Strong technical support is supplied.
2, it is mechanization coal breakage that the present invention, which changes big gun to adopt coal breakage and high water jets power coal breakage, and coal breakage is adopted by slipping the realization of mine hole
Charcoal is from continuative transport is slipped, and compared to blasting process, realizes mechanization coal breakage using plane milling formula coalcutter, it is strong to reduce worker's labour
It spends, improves working environment at coal mines, improves coal recovery rate；Compared to hydromining technique, using plane milling formula coalcutter by certainly
Realize that coal body is broken, avoids the energy loss of production system in high pressure water flow cyclic process, improves efficiency of energy utilization again,
Water consumption and power consumption have been saved, water resource and ecological environment are protected, has reduced production cost；Plane milling formula coalcutter is fully borrowed
It helps dead weight to realize that coal is longitudinally broken and ensures itself the operation is stable, reduces coal breakage cost；Coal uses slips continuative transport certainly
Mode, improve conevying efficiency, reduce transportation cost.
3, the goaf in the present invention is longitudinal slot type space structure, be advantageously implemented the three-dimensional of goaf, ordering,
Full volumetric fills, and simplifies filling process system, reduces gangue filling cost, advantageously accounts for the ground stacking of gangue
Exploitation of coal resources problem is covered under the three of " under building, under railway, under water body ", effective protection ecological environment and guarantee provide
Source suitable development utilizes.
4, the present invention is under the action of goaf filling body, compared to the exploitation side that whole caving methods manage goaf top plate
Method, goaf filling body and Seam Roof And Floor can form good vertical mechanical structure, can control long-term effectively mined out
Area's country rock has ensured shaft production safety.
Description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is tunnel in the present invention, slips the stereoscopic schematic diagram in mine hole.
Fig. 2 is the plane band-like working from top down technology arrangement coal bed profile figure of milling formula coalcutter horizontal bar.
In figure：1 is half-edge coal seam, and 2 exploit tunnel for top, and 3 exploit tunnel for lower part, and 4 is slip mine hole, and 5 be adjacent
Protection coal pillar between stage, 6 be the interregional protection coal pillar of mining of adjacent, and 7 be equipment operational safety protection coal pillar, and 8 adopt for plane milling formula
Coal machine.
Specific implementation mode
Embodiment
As shown in Figure 1 and Figure 2, if the Roof And Floor Stability of half-edge coal seam 1 is good, occurrence condition is good, high-dipping of the present invention
Slot type recovery method is built in the longwell plane milling of coal seam longitudinal direction, is carried out as steps described below：
The first step analyzes coal seam and coffer mechanics feature, rationally determines exploitation according to the occurrence condition of half-edge coal seam 1
The coal works such as protection coal pillar 5 between the interregional protection coal pillar 6 of width, level interval, strike length, mining of adjacent and adjacent phases
Face important technological parameters are respectively arranged out by 20~40m of level interval in coal seam upper and lower part according to these technical parameters
Adopt tunnel；
Second step is applied by 10~30m of spacing using anti-well drilling machine from bottom to top according to coal working face important technological parameters
The multiple satisfactions of work slip mine and equipment service requirement, 0.8~1.4m of diameter slips mine hole 4, and the mine hole 4 that slips penetrates through top exploitation lane
Tunnel 3 is exploited in road 2 and lower part, and coal transportation system is arranged in tunnel 3 is exploited in lower part, and coal transportation system, which is located at, slips mine hole 4
Lower section；
Third walks, and slips after the construction of mine hole 4 completes, in the exploitation tunnel 2 of top, using plane milling formula coalcutter 8 according to 2~
The mining width of 4m and the exploitation length of 100~500m carry out the band-like working from top down of horizontal bar, adopt to certain depth, ensure lower section
It stays after setting the equipment operational safety protection coal pillar 7 of 3~8m, will dig milling formula coalcutter 8 by elevator is promoted to top exploitation tunnel
2, or detour through lower part connection roadway and carry out next cycle to top exploitation tunnel 2, it adopts the coal fallen and slips mine hole 4 certainly by described
The coal transportation system in lower part exploitation tunnel 3 is slipped to, plane milling formula coalcutter 8, which recycles, mines, and tunnel 2 is exploited on top and lower part is opened
The coal mining adopted between tunnel 3 in addition to protection coal pillar is complete；
4th step, according to strata control around longwang face and ground ecological environmental protection requirement, it is determined whether carry out goaf filling；
When needing to carry out goaf filling, according to goaf structural mechanics feature and mining, filling production technology arrangement, filling master is determined
Want technical parameter；The closed facility of mouth under constructing goaf in discarded lower part exploitation tunnel 3 first, will using stowage unit
It is upper what is discarded after the filling slurries such as gangue are successively filled to the space in the discarded exploitation tunnel in lower part and goaf from bottom to top
Goaf closed facility suitable for reading is constructed in exploitation tunnel 2 by portion, by filling slurries such as gangues full of the discarded exploitation tunnel in top
The three-dimensional of goaf, ordering, full volumetric filling are realized in space；
5th step repeats the first step to the 4th step, realizes safety and high efficiency, the coal of 2~20m of thickness half-edge coal seams 1
The backfill of spoil low cost, ecological environment effective protection and resource suitable development utilize.
In the first step to the implementation process of the 5th step, according to coal seam country rock and the mechanical structure of goaf filling body
Signature analysis stays protection coal pillar 5 between the adjacent phases of the interregional protection coal pillar 6 of the mining of adjacent for setting 5~10m, 5~10m, it is ensured that
Working surface production safety.
The coal transportation system is ribbon conveyer.
The plane milling formula coalcutter 8 can be the Vermeer T1255 ahooting plane milling machines of Vermon of the U.S., or
This safe 1475 rock drum-type detritus Buddha's warrior attendant of Meike, or similar other machinery.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Go out various change.
Claims (3)
1. slot type recovery method is built in longwell plane milling in half-edge coal seam longitudinal direction, it is characterised in that carry out as steps described below：
The first step, according to half-edge coal seam（1）Occurrence condition, analyze coal seam and coffer mechanics feature, rationally determine that exploitation is wide
The interregional protection coal pillar of degree, level interval, strike length, mining of adjacent（6）The protection coal pillar between adjacent phases（5）Equal coal-getters
Make face important technological parameters, according to these technical parameters, exploitation tunnel is respectively arranged in coal seam upper and lower part；
Second step is slipped mine and is set according to coal working face important technological parameters by certain spacing multiple vertical satisfactions of constructing
Standby service requirement slips mine hole（4）, described to slip mine hole（4）It penetrates through top and exploits tunnel（2）Tunnel is exploited with lower part（3）, under
Exploit tunnel in portion（3）Middle arrangement coal transportation system, coal transportation system, which is located at, slips mine hole（4）Lower section；
Third walks, and slips mine hole（4）After construction is completed, tunnel is exploited on top（2）It is interior, it is exploited, is opened using coal-cutting machinery
It to be stayed when adopting and set enough equipment operational safety protection coal pillars（7）, adopt the coal fallen and slip mine hole by described（4）It is opened from lower part is slipped to
Adopt tunnel（3）Coal transportation system, coal-cutting machinery cycle mine, tunnel is exploited on top（2）Tunnel is exploited with lower part（3）It
Between coal mining in addition to protection coal pillar it is complete；
4th step, according to strata control around longwang face and ground ecological environmental protection requirement, it is determined whether carry out goaf filling；It needs
When carrying out goaf filling, according to goaf structural mechanics feature and mining, filling production technology arrangement, determines and fill main skill
Art parameter；First tunnel is exploited in discarded lower part（3）The closed facility for inside constructing mouth under goaf, using stowage unit by coal
After the filling slurries such as spoil are successively filled to the space in the discarded exploitation tunnel in lower part and goaf from bottom to top, on discarded top
Exploit tunnel（2）Goaf closed facility suitable for reading is inside constructed, by filling slurries such as gangues full of the discarded exploitation tunnel in top
The three-dimensional of goaf, ordering, full volumetric filling are realized in space；
5th step repeats the first step to the 4th step, realizes thickness 2~20m half-edge coal seams（1）Safety and high efficiency, bastard coal
The backfill of stone low cost, ecological environment effective protection and resource suitable development utilize；
Coal-cutting machinery in the third step is plane milling formula coalcutter（8）；
It is described to slip mine hole（4）It is constructed from bottom to top using anti-well drilling machine；
The coal transportation system is ribbon conveyer.
2. slot type recovery method is built in longwell plane milling in half-edge coal seam longitudinal direction according to claim 1, it is characterised in that：Institute
It states in the first step to the implementation process of the 5th step, according to coal seam country rock and the mechanical structure signature analysis of goaf filling body, stays
If the interregional protection coal pillar of the mining of adjacent of 5~10m（6）, 5~10m adjacent phases between protection coal pillar（5）, it is ensured that working face
Production safety.
3. slot type recovery method is built in longwell plane milling in half-edge coal seam longitudinal direction according to claim 1 or 2, it is characterised in that：
The plane milling formula coalcutter（8）It carries out the band-like downlink plane milling of horizontal bar to exploit to form slot type goaf, adopts to certain depth, ensures
Stay the equipment operational safety protection coal pillar for setting 3~8m in lower section（7）Afterwards, milling formula coalcutter will be dug by elevator（8）It is promoted to top
Exploit tunnel（2）, or detour through lower part connection roadway and exploit tunnel to top（2）Carry out next cycle.
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| CN108547658B (en) * | 2018-03-20 | 2019-06-18 | 四川省安全科学技术研究院 | A kind of high inclination-angle ultra-thin coal seam spoil is from slipping backfilling goaf method |
| CN109026000B (en) * | 2018-09-28 | 2019-12-03 | 西安科技大学 | A kind of steep-inclined thick coal seam is bowed pseudo- tiltedly arc inclined cuting layering longwall top coal caving method |
| CN110130898B (en) | 2019-07-09 | 2019-09-17 | 北京中矿创新联盟能源环境科学研究院 | Design method for non-pillar, non-roadway and non-roadway tunneling mine |
| CN111691885B (en) * | 2020-05-26 | 2021-11-09 | 太原理工大学 | Efficient filling mining method for ultra-thick coal seam |
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Effective date of registration: 20221104 Address after: 553401 Xi Circular Economy Industrial Park, Liupanshui Road, Xinyao Town, Liuzhi Special Zone, Liupanshui City, Guizhou Province Patentee after: Guizhou Inclined Mining Technology Co.,Ltd. Address before: 030001 No. 18 Youth Road, Yingze District, Taiyuan City, Shanxi Province Patentee before: Gao Hongbo |
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