CN117090573B - Z-type full-wind-pressure staggered strip continuous mining and continuous charging integrated process for mine - Google Patents
Z-type full-wind-pressure staggered strip continuous mining and continuous charging integrated process for mine Download PDFInfo
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- CN117090573B CN117090573B CN202311340123.5A CN202311340123A CN117090573B CN 117090573 B CN117090573 B CN 117090573B CN 202311340123 A CN202311340123 A CN 202311340123A CN 117090573 B CN117090573 B CN 117090573B
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- 238000005065 mining Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005641 tunneling Effects 0.000 claims abstract description 84
- 239000003245 coal Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims description 4
- 230000001351 cycling effect Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 3
- 230000009931 harmful effect Effects 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract 1
- 101100008050 Caenorhabditis elegans cut-6 gene Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001788 irregular Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/18—Gravity flow ventilation
-
- 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
The invention relates to a mine Z-shaped full-wind-pressure dislocation strip continuous mining and continuous filling integrated process, and belongs to the technical field of underground ventilation; the method comprises the steps that Z-shaped working face cutting holes are formed in a stoping working face, Z-shaped working face cutting holes are always kept to move synchronously in a tunneling process, so that the stoping working face is kept in a Z-shaped strip structure, tail end safety coal pillars are kept at the tail ends of the stoping working face, the stoping working face and return air slots are kept in Z-shaped communication paths, fresh air from the transportation slots can directly enter the stoping strips in tunneling, toxic and harmful gases and dust in the stoping strips in tunneling are diluted and removed to form polluted air, and the polluted air sequentially passes through the working face cutting holes, the last stoping strip in tunneling, the working face cutting holes and the return air slots which are sequentially communicated finally enter the return air slots and are finally discharged, so that full air pressure ventilation is realized; the problem that full wind pressure ventilation cannot be realized in the strip tunneling process in the existing continuous mining and continuous filling mining method is solved.
Description
Technical Field
The invention belongs to the technical field of underground ventilation, and particularly relates to a mine Z-shaped full-wind-pressure dislocation strip continuous mining and continuous filling integrated process.
Background
Coal in China is mainly mined by well engineering, and the long-wall fully-mechanized mining technology is most widely applied. After the long-wall fully-mechanized mining, a large amount of coal pillars, residual coal mining areas, irregular block sections, three-lower coal pressing (under buildings, railways and water bodies), highwall coal pressing and the like are left, and the long-wall fully-mechanized mining working surfaces cannot be continuously arranged for resource recovery. How to effectively recycle the resources such as the coal pillars, the irregular block sections, the coal pressing under three conditions and the like is a bottleneck problem for improving the safety, the green and the efficient exploitation of the coal.
At present, a continuous miner short wall mechanized mining technology is adopted to solve the problems. The technology uses a continuous miner and the equipment matched with the continuous miner to mine coal. The technology has the advantages of integration of mining, flexibility, small investment, quick response and wide application range. Because the arrangement of the short wall working surface is flexible, the mechanical stoping of 'advancing and retreating' can be realized, and the method is very suitable for the underground coal mine corner coal, 'three-down' coal pressing and irregular block section mining. However, this technique also has several significant drawbacks, in particular:
1. in the technology, an air supply operation is carried out by an local ventilator during the tunneling of a strip roadway (or a mining tunnel), full negative pressure ventilation cannot be formed, and the working environment condition is poor;
2. when tunneling, the filling cannot be performed synchronously, a large-distance empty roof can be formed, and permanent (or temporary) support is needed to ensure the operation safety.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a mine Z-shaped full-wind pressure dislocation strip continuous mining and continuous filling integrated process; the problem that full wind pressure ventilation cannot be realized in the strip tunneling process in the existing continuous mining and continuous filling mining method is solved.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
The Z-type full wind pressure dislocation strip continuous mining and continuous filling integrated process for the mine comprises the following steps,
s1: the method comprises the steps of encircling a stoping working face, wherein two ends of the stoping working face are respectively connected with the tail end of a transportation cis-slot and the tail end of a return air cis-slot, the stoping working face is a Z-shaped strip working face, one end of the stoping working face connected with the transportation cis-slot is provided with a Z-shaped working face cutting hole, the working face cutting hole is a tunneling side at one side close to a coal wall to be tunneled, and the working face cutting hole is a return air side at one side close to the tunneled coal wall;
s2: the stope face is driven along the driving side of the cutting hole of the face, the driving is carried out towards the return air along the direction of the return air gate, the top control distance and the length of each driving cycle are determined according to the roof condition of the stope face, the length range of each driving cycle is 8-12 m, and the supporting is completed in time after each driving cycle is completed;
s3: the stope working face is cut along the Z-shaped working face to form an air return side, a filling bag with the same length as the tunneling circulation length is hung on the air return side after the tunneling side finishes one tunneling circulation length, and quick setting filling materials are timely filled into the filling bag;
s4: continuously cycling according to the steps S2 and S3 until the working face of the stope is cut and driven to a position 10 m-15 m away from the return air cis-slot, stopping driving, and reserving a tail end safety coal pillar on the driving side of the working face cut, wherein the driving side of the working face cut finishes the stope of a first stope strip, and the return air side of the working face cut finishes the filling of the first filling strip;
s5: the stope face returns to one end of the transportation cis trough to mine a new face for cutting;
s6: repeating the steps S2, S3, S4 and S5 at the position of the working face cut formed newly on the stoping working face, so that the first stoping strip is converted into a second filling strip, a tail end safety coal pillar is continuously reserved at one end of the second stoping strip close to the return air cis-slot, and the second working face cut is moved to be communicated with the first working face cut;
s7: and (5) repeating the steps (S5) and (S6) continuously to form a third, a fourth and a fifth … … until the last working surface is cut, and all the working surface cuts are mutually communicated, so that the whole working surface finishes the stoping and filling operation.
Further, in step S1, specifically, an initial security coal pillar is reserved at the connection position of the transportation gate way and the stope face, and the part of the stope face, from which the initial security coal pillar is removed, is an initial face section; mining an initial tunneling section from one end of a coal wall to be tunneled at a stope face, which is close to a transportation cis trough, wherein the length of the initial tunneling section is greater than that of an initial security coal pillar; one end of the initial tunneling section, which is far away from the transportation gate way, is connected with one end of the initial working surface section, which is far away from the return air gate way, through a connecting section.
Further, the initial tunneling section, the connecting section and the initial working surface section form a Z-shaped stoping working surface together, wherein the initial tunneling section is a tunneling side of a working surface cutting hole, and the initial working surface section is a return air side of the working surface cutting hole.
Further, in step S2, the coal wall to be tunneled at the stope face is tunneled from the initial tunnelling section towards the return air gateway, and the length of a tunnelling cycle is tunneled each time, so that the length of the initial tunnelling section of the stope face is lengthened in sequence along with each tunnelling cycle.
Further, in step S3, the initial face section at the stope face is tunneled and filled against the initial security coal pillar so that the length of the initial face section of the stope face shortens in sequence with each tunnelling cycle.
Further, in step S4, the length of the first recovery strip is equal to the length of the first filling strip.
Further, in step S4, the stope face always maintains a zigzag strip face structure during the tunneling process, and the face cut of the stope face is always close to the return air gate along with the tunneling.
Further, in step S5, the stope face digs a second tunneling section on the coal wall of the current face near one end of the transportation gate way on the tunneling side of the cut hole, and the length of the second tunneling section is equal to that of the initial tunneling section in the direction of the return air gate way; then, filling a second filling bag at one end, close to the transportation cis trough, of the current working face on the tunneling side of the stope working face, wherein the second filling bag is clung to the initial security coal pillar along the direction of the transportation cis trough; through the second tunneling section and the second filling bag, a Z-shaped working face cut hole is formed on the back working face at one end of the first back strip close to the transportation cis-slot again.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, a Z-shaped ventilation mode is adopted, after the working surfaces of the strips are all defined, an local ventilator is not required to be arranged in the whole mining engineering, fresh air from a transportation gateway can directly enter the interior of the mining strips in tunneling, toxic and harmful gas and dust in the interior of the mining strips in tunneling are diluted and discharged to form polluted air, and the polluted air sequentially passes through the working surface cutting hole, the last tunneling mining strip, the working surface cutting hole and the return air gateway which are sequentially communicated finally enter the return air mountain and are finally discharged, so that real full-air pressure ventilation is realized. Meanwhile, the process adopts a perfect supporting process, so that the mining efficiency of the working face is greatly improved.
Drawings
The invention is described in further detail below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the structure of the first step in the present invention;
FIG. 2 is a schematic diagram of a second step of the present invention;
FIG. 3 is a schematic diagram of the third step of the present invention;
FIG. 4 is a schematic diagram of the fourth step of the present invention;
FIG. 5 is a schematic diagram of a fifth step of the present invention;
FIG. 6 is a second schematic diagram of the fifth step of the present invention;
FIG. 7 is a schematic diagram of the sixth and seventh steps of the present invention;
the mining method comprises the following steps of 1, a stoping working face, 2, a transportation gate, 3, 4, 5, 6, a working face cutting hole, 7, an initial tunneling section, 8, a connecting section, 9, 10, an initial safety coal pillar, 11, a tunneling cycle, 12, 13, a terminal safety coal pillar, 14, 15, 16, a second tunneling section and 17, wherein the stoping working face, the transportation gate, the 4, the transportation gate, the 5, the return air gate, the 6, the working face cutting hole, 7, the initial tunneling section, 8, the initial working face section, 10, the initial safety coal pillar, 11, the filling bag, 13, the terminal safety coal pillar, 14, the filling strip, 15, the stoping strip, the second tunneling section and the second filling bag.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
The invention provides a mine Z-shaped full-wind-pressure dislocation strip continuous mining and continuous filling integrated process, which specifically comprises the following steps:
first step
As shown in fig. 1, the stope face 1 is encircled, two ends of the stope face 1 are respectively connected with the tail end of the transportation cis-slot 2 and the tail end of the return air cis-slot 3, the head end of the transportation cis-slot 2 is communicated with the transportation ascending mountain 4, and the head end of the return air cis-slot 3 is communicated with the return air ascending mountain 5. The stope face 1 is a Z-shaped strip face, and the strip width of the stope face 1 is 3-5 m.
The end of the stope working face 1, which is connected with the transportation gateway 2, is provided with a Z-shaped working face cutting eye 6, the working face cutting eye 6 is a tunneling side at one side close to the coal wall to be tunneled, and the working face cutting eye 6 is a return air side at one side close to the tunneled coal wall.
Specifically, an initial security coal pillar 10 is reserved at the joint of a transportation gateway 2 and a stope face 1, and the part of the stope face 1 after the initial security coal pillar 10 is removed is an initial working face section 9; mining an initial tunneling section 7 from one end of a coal wall to be tunneled at the stope face 1, which is close to the transportation gate way 2, wherein the length of the initial tunneling section 7 is longer than that of an initial security coal pillar 10; the end of the initial tunneling section 7, which is far away from the transportation gate way 2, is connected with the end of the initial working face section 9, which is far away from the return air gate way 3, through a connecting section 8.
The initial tunneling section 7, the connecting section 8 and the initial working face section 9 form a Z-shaped stope working face 1 together, wherein the initial tunneling section 7 is the tunneling side of the working face cutting hole 6, and the initial working face section 9 is the air return side of the working face cutting hole 6.
Second step
As shown in fig. 2, the stope face 1 is tunneled along the tunneling side of the zigzag face cut 6 toward the return air crossheading 3, the roof control distance and the length of each tunneling cycle 11 are determined according to the roof condition of the stope face 1, the length range of each tunneling cycle 11 is 8 m-12 m, and the support is completed in time after each tunneling cycle 11 is completed.
Specifically, the coal wall to be tunneled at the stope face 1 starts from the initial tunnelling section 7 and tunnels towards the return air cis-slot 3, and the length of one tunnelling cycle 11 is tunneled each time, so that the length of the initial tunnelling section 7 of the stope face 1 is sequentially lengthened along with each tunnelling cycle 11.
Third step
As shown in fig. 3, on the return air side of the zigzag working face cutting hole 6 of the stope working face 1, after the tunneling side finishes a tunneling cycle 11 length, a filling bag 12 with the length equal to that of the tunneling cycle 11 is hung on the return air side, and the quick setting filling material is timely filled into the filling bag 12.
Specifically, the initial working surface section 9 at the stope working surface 1 is tightly attached to the initial security coal pillar 10, after each tunneling cycle 11 length is completed at the tunneling side, a filling bag 12 with the same length as the tunneling cycle 11 length is sequentially hung, and quick setting filling materials are timely filled into the filling bag 12, so that the length of the initial working surface section 9 of the stope working surface 1 is sequentially shortened along with each tunneling cycle 11.
Fourth step
As shown in fig. 4, the steps of the second step and the third step are continuously circulated until the working face cutting hole 6 of the stope working face 1 is driven to a position 10 m-15 m away from the return air gate, the driving side of the working face cutting hole 6 is reserved with a tail end safety coal pillar 13, at this time, the driving side of the working face cutting hole 6 finishes the stope of the first stope strip 15, the return air side of the working face cutting hole 6 finishes the filling of the first filling strip 14, the length of the first stope strip 15 is equal to the length of the first filling strip 14, namely, the stope working face 1 always keeps a Z-shaped strip working face structure in the driving process, and the working face cutting hole 6 of the stope working face 1 is always close to the side of the return air gate 3 along with the driving.
Fifth step
As shown in fig. 5 and 6, the stope face 1 is returned to one end of the transportation chute 2 to re-mine a new face cut 6.
Specifically, the stope face 1 digs a second tunneling section 16 towards the direction of the return air crossheading 3 on the coal wall, which is close to one end of the transportation crossheading 2, of the tunneling side of the current face cutting hole 6, and the length of the second tunneling section 16 is equal to that of the initial tunneling section 7; the stope face 1 is then filled with a second filling bag 17 at the end of the current face cut 6 near the transportation chute 2, the second filling bag 17 being in close contact with the initial security coal pillar 10 in the direction of the transportation chute 2. The second tunneling section 16 and the second filling bag 17 form a zigzag face cut 6 again on the stope face 1 at the end of the first stope strip 15 near the transport chute 2.
Sixth step
And repeating the second, third, fourth and fifth steps at the position of the working face cut 6 newly formed by the stoping working face 1, so that the first stoping strip 15 is converted into a second filling strip 14, a tail end safety coal pillar 13 is continuously reserved at one end of the second stoping strip 15 close to the return air cis groove 3, and the second working face cut 6 is moved to be communicated with the first working face cut 6.
Seventh step
As shown in fig. 7, the fifth and sixth steps are repeated continuously to form third, fourth and fifth … … working face cut holes 6 until the last working face cut hole 6, and all working face cut holes 6 are mutually communicated, so that the whole working face is subjected to stoping and filling operations.
According to the invention, a Z-shaped ventilation mode is adopted, after the working surfaces of the strips are all defined, an local ventilator is not required to be arranged in the whole mining engineering, fresh air from the transportation cis-slot 2 can directly enter the interior of the tunneling stope strip 15, toxic and harmful gas and dust in the tunneling stope strip 15 are diluted and discharged to form polluted air, and the polluted air sequentially passes through the working surface cut-out hole 6, the last tunneling stope strip 15, the working surface cut-out hole 6 and the return air cis-slot 3 which are sequentially communicated, finally enters the return air uphill 5 and is finally discharged, so that real full-wind pressure ventilation is realized. Meanwhile, the process adopts a perfect supporting process, so that the mining efficiency of the working face is greatly improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The Z-shaped full-wind-pressure staggered strip continuous mining and continuous filling integrated process for the mine is characterized by comprising the following steps of,
s1: the mining machine comprises a circumscribing stope face (1), wherein two ends of the stope face (1) are respectively connected with the tail end of a transportation cis trough (2) and the tail end of a return air cis trough (3), the stope face (1) is a Z-shaped strip face, one end of the stope face (1) connected with the transportation cis trough (2) is provided with a Z-shaped face cutting hole (6), one side of the face cutting hole (6) close to a coal wall to be tunneled is a tunneled side, and one side of the face cutting hole (6) close to the tunneled coal wall is a return air side; an initial security coal pillar (10) is reserved at the joint of the transportation gateway (2) and the stope face (1), and the part of the stope face (1) after the initial security coal pillar (10) is removed is an initial working face section (9); mining an initial tunneling section (7) from one end of a coal wall to be tunneled at a stope face (1) close to a transportation cis trough (2), wherein the length of the initial tunneling section (7) is greater than that of an initial security coal pillar (10); one end of the initial tunneling section (7) far away from the transportation cis trough (2) is connected with one end of the initial working surface section (9) far away from the return air cis trough (3) through a connecting section (8); the initial tunneling section (7), the connecting section (8) and the initial working face section (9) form a Z-shaped stoping working face (1), wherein the initial tunneling section (7) is a tunneling side of the working face cutting hole (6), and the initial working face section (9) is a return air side of the working face cutting hole (6);
s2: the stope working face (1) is tunneled along the tunneling side of a working face cutting hole (6) towards the direction of a return air cis-slot (3), the top control distance and the length of each tunneling cycle (11) are determined according to the roof condition of the stope working face (1), the length range of each tunneling cycle (11) is 8-12 m, and the support is completed in time after each tunneling cycle (11) is completed;
s3: the stope working face (1) is hung with a filling bag (12) with the length equal to that of the tunneling cycle (11) on the return air side after the tunneling side finishes the length of the tunneling cycle (11) along the return air side of the zigzag working face cutting hole (6), and quick setting filling materials are timely filled into the filling bag (12);
s4: continuously cycling according to the steps S2 and S3 until the working face cutting hole (6) of the stope working face (1) is tunneled to a position 10 m-15 m away from the return air cis-slot (3), stopping tunneling, and reserving a tail end safety coal pillar (13) on the tunneling side of the working face cutting hole (6), wherein the tunneling side of the working face cutting hole (6) finishes stoping of a first stoping strip (15), and the return air side of the working face cutting hole (6) finishes filling of a first filling strip (14); the length of the first stoping strip (15) is equal to the length of the first filling strip (14); the stope working face (1) always maintains a Z-shaped strip working face structure in the tunneling process;
s5: the stoping working face (1) returns to one end of the transportation cis trough (2) to re-mine a new working face cutting hole (6);
s6: repeating the steps S2, S3, S4 and S5 at the newly formed working face cut (6) of the stoping working face (1) to enable the first stoping strip (15) to be converted into a second filling strip (14), and continuously reserving a tail end safety coal pillar (13) at one end, close to the return air cis-slot (3), of the second stoping strip (15), wherein the second working face cut (6) is moved to be communicated with the first working face cut (6);
s7: and (5) repeating the steps (S5) and (S6) continuously to form a third working surface cut (6), a fourth working surface cut (… …) and a fifth working surface cut (6) until the last working surface cut (6) is communicated with each other, so that the whole working surface finishes the stoping and filling operation.
2. The mine Z-type full wind pressure dislocation strip continuous mining and continuous filling integrated process according to claim 1, wherein the process is characterized in that: in the step S2, the coal wall to be tunneled at the stope face (1) is tunneled from the initial tunnelling section (7) towards the return air gateway (3), and the length of one tunnelling cycle (11) is tunneled each time, so that the length of the initial tunnelling section (7) of the stope face (1) is lengthened in sequence along with each tunnelling cycle (11).
3. The mine Z-type full wind pressure dislocation strip continuous mining and continuous filling integrated process according to claim 2, characterized in that: in step S3, the initial face section (9) at the stope face (1) is tunneled against the initial security coal pillar (10) and filled such that the length of the initial face section (9) of the stope face (1) shortens in sequence with each tunnelling cycle (11).
4. The mine Z-type full wind pressure dislocation strip continuous mining and continuous filling integrated process according to claim 1, wherein the process is characterized in that: in the step S4, the working face cutting hole (6) of the stope working face (1) is close to one side of the return air cis-slot (3) along with tunneling.
5. The mine Z-type full wind pressure dislocation strip continuous mining and continuous filling integrated process according to claim 3, wherein the process is characterized in that: in the step S5, the stope working face (1) tunnels a second tunneling section (16) towards the direction of the return air cis-slot (3) on the coal wall, close to one end of the transportation cis-slot (2), of the tunneling side of the current working face cutting hole (6), and the length of the second tunneling section (16) is equal to that of the initial tunneling section (7); then, the stope working face (1) is filled with a second filling bag (17) at one end, close to the transportation cis trough (2), of the tunneling side of the current working face cutting hole (6), and the second filling bag (17) is tightly attached to the initial security coal pillar (10) along the direction of the transportation cis trough (2); the second tunneling section (16) and the second filling bag (17) enable the stope face (1) to form a Z-shaped face cutting hole (6) at one end of the first stope strip (15) close to the transportation gateway (2) again.
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