CN111255456A - Mine advancing type filling roadway mining method - Google Patents
Mine advancing type filling roadway mining method Download PDFInfo
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- CN111255456A CN111255456A CN202010112566.9A CN202010112566A CN111255456A CN 111255456 A CN111255456 A CN 111255456A CN 202010112566 A CN202010112566 A CN 202010112566A CN 111255456 A CN111255456 A CN 111255456A
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- 238000005065 mining Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 94
- 239000003245 coal Substances 0.000 claims abstract description 87
- 238000005516 engineering process Methods 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 16
- 239000010409 thin film Substances 0.000 claims abstract description 5
- 230000001174 ascending effect Effects 0.000 claims description 30
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- 239000010408 film Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 4
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- 238000000605 extraction Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
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- 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 OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
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Abstract
The invention discloses a mine advancing type filling roadway mining method, wherein a coal cutter cuts a section of a roadway in the coal cutting process, and a filling roadway side is formed at the side of a goaf by using a solid filling technology; adopting a filling coal mining process for coal resource recovery and goaf filling; the advancing direction of the working surface adopts a forward type. The section roadway is gradually formed along with the mining of the working face, and the anchor rod, the anchor cable and the friction type constant-resistance upright post are adopted, and the filling slope thin film is subjected to grouting sealing and combined supporting. The transport drift and the return air drift of the first mining face are formed by adopting a filling automatic lane forming method; one section of the lane of the take-over surface is formed by adopting a method of filling automatic lane forming, and the other section of the lane is formed by filling the automatic lane forming by using the previous working surface. The function of the same section roadway is unchanged when the same section roadway continues to serve the next working face. The method has simple process, realizes the non-pillar mining, increases the resource recovery rate, lightens the pressure of upper and lower replacement of the stope face, and improves the stope efficiency.
Description
Technical Field
The invention belongs to the technical field of coal mining, and particularly relates to a mine advancing type filling roadway mining method, which is particularly suitable for a non-pillar gob-side entry retaining of a solid filling coal face.
Background
In general, a protective coal pillar of about 20m is left between two working faces of an upper section and a lower section of filling coal mining and near an upper mountain and a lower mountain, so that a large amount of coal resources are lost. In order to further improve the extraction rate, from the 50 th century, major coal-producing countries in the world such as the UK, Germany, Poland, Russia, China and the like develop and improve the gob-side entry retaining technology and the roadway support technology continuously, along with the continuous development and perfection of the overburden movement law, the roadway-side support technology and the roadway-inside support technology, the gob-side entry retaining technology is continuously improved, and remarkable economic, social and environmental benefits are obtained. However, the gob-side entry retaining method is carried out on the basis of caving mining, the construction difficulty is high, the cost is high, the interference of stoping and roadway maintenance is serious, and the efficiency is low. Aiming at the problems, the mining method for the mine advancing type filling roadway can improve the recovery rate of coal resources and save the tunneling cost, is simple to operate, and has important practical significance and wide application prospect.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the advancing type pillar-free filling self-entry mining method which is simple in construction and good in economic benefit.
The technical scheme is as follows: the invention relates to a stoping roadway which is cut by a coal mining machine, a side wall body of a mining area of a gob-side entry retaining roadway consists of a solid compact filling body, the retained roadway is maintained through anchor rod and anchor cable friction type constant-resistance upright columns and film grouting sealing, and the advancing type non-pillar filling self-entry mining method comprises the following steps:
a mining method of mine advancing type filling roadway, a coal cutter cuts out the section of a section roadway in the coal cutting process, and the filling mining and filling automatic roadway forming are realized by utilizing a comprehensive mechanized solid filling technology; the filling mining refers to adopting a comprehensive mechanized solid filling mining method to carry out resource stoping and goaf full-section filling, and the advancing direction of a working face is forward; the automatic filling roadway forming means that a filling roadway side is formed on the side of a goaf by utilizing a comprehensive mechanized solid filling technology, an anchor rod, an anchor cable and a friction type constant-resistance upright column are adopted, thin film grouting sealing is carried out on the filling roadway side, combined supporting is carried out, and a section roadway is automatically formed step by step along with the mining of a working face; the transportation drift and the return air drift of the first mining surface of the mining area are formed by adopting a filling automatic lane forming method; one section roadway of the take-over surface is formed by adopting a method of filling automatic roadway formation, and the other section roadway is followed by the roadway formed by filling automatic roadway formation by using the previous working surface; the function is unchanged when the same section roadway continues to serve the next working face, namely if the transportation roadway of the previous working face is retained along the gob-side entry, the next working face continues to serve as the transportation roadway; and if the last working face air return gallery is retained along the gob-side entry, the next working face continues to serve as the air return gallery.
Further, in the invention, in the comprehensive mechanized solid compact filling mining method, the stoping process of the first mining face is different from the roadway forming form and the stoping process of the replacing face I and the replacing face II, when the first mining face is stoped, the transportation roadway I and the return air roadway I automatically form roadways along with mining by adopting the automatic filling roadway forming technology, and the roadways are reserved along the empty until the stoping of the first mining face is finished; when the replacement face I is used for stoping, the return air drift I is continuously served as a return air drift, and the transportation drift II adopts the filling automatic drift forming technology to automatically form a drift along with mining; and when the stoping of the replacing surface II is carried out, the transport drift II is continuously served as the transport drift, and the return air drift II automatically forms a drift along with the mining by adopting the filling automatic drift forming technology.
Further, in the invention, the stoping process of the first stope specifically comprises the following steps:
a. carrying out forward type mining from a transport ascending of a mining area and a track ascending to the boundary of the mining area without reserving an ascending protective coal pillar, reserving the ascending according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to carry out coal cutting operation, and cutting out tunnel sections of a transport drift I and a return air drift I;
b. the exposed area of the end is large, a self-moving end hydraulic support is adopted for supporting, 2-3 supports are combined into a group, and a top plate is maintained;
c. the working face is internally provided with a moving support and then a pushing slide, and a cut-off distance exists between the pushing slide and the scraper conveyor. After the coal mining machine cuts coal, the support sequentially moves forwards along with the coal mining machine to support a top plate, the conveyor moves towards the mine wall section by section along with the moving support, and the moving step distance is equal to the cutting depth of the coal mining machine;
d. after the scraper conveyor in the working face is straightened, the multi-hole bottom-dump conveyor is moved to the rear part of the rear top beam of the filling hydraulic support, and filling operation is started;
e. and the filling operation simultaneously implements the filling automatic entry forming process of the transport drift I and the return air drift I.
Further, in the invention, the extraction process of the succession face I specifically comprises the following steps:
a. carrying out forward mining from a transport ascending of a mining area and a track ascending to the boundary of the mining area without reserving an ascending protective coal pillar, reserving the ascending according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to carry out coal cutting operation, and cutting out the tunnel section of a transport level tunnel II;
the working procedures of b to d are consistent with those of b to d in the stoping process of the first mining face;
e. and (3) carrying out the filling automatic lane forming process of the transport level II at the same time of filling operation.
Further, in the invention, the extraction process of the successor face II specifically comprises the following steps:
a. carrying out forward type mining from a mining area transportation ascending mountain and a track ascending mountain to the boundary of the mining area without reserving an ascending mountain protection coal pillar, reserving the ascending mountain according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to perform coal cutting operation, and cutting a tunnel section of a return air drift II;
the working procedures of b to d are consistent with those of b to d in the stoping process of the first mining face;
e. and (3) performing filling operation and simultaneously implementing an automatic tunneling process for filling the return air drift II.
The roadway forming form and the stoping process of the subsequent succession surface are similar to the principles of the succession surface I and the succession surface II.
The roadway forming form and the stoping process of the other wing of the mining area are similar to the principle of the first mining surface, the taking-over surface I and the taking-over surface II of the wing.
Further, in the invention, the filling sequence of the filling operation in the step d is carried out from the tail of the multi-hole bottom-discharge type conveyor to the head direction, after the previous discharge hole is discharged to a certain height, the next filling discharge hole is opened, the tamping mechanism at the rear part of the support where the previous discharge hole is located is immediately started, the jack pushes the tamping plate to tamp the discharged filling material, and the steps are repeated for 2-3 cycles until the tamping is carried out.
Further, in the present invention, the filling automatic lane-forming finger:
during stoping, a section roadway gob-side entry retaining cut by a coal mining machine is used as a section roadway service with the same function of the next working face, and the specific construction procedures can be divided into three parts: the method comprises the following steps of roadway top plate supporting, roadway filling side supporting and filling side film grouting sealing, wherein all the procedures are operated in parallel and completed in one coal mining cycle; the method comprises the following specific steps:
a. after the coal mining machine cuts out a section roadway section, the coal mining machine pushes the section roadway section to slide and move the frame, the end bracket moves forwards by a step distance, an anchor cable drilling machine carried at the rear part of the end bracket starts to work, an anchor rod and an anchor cable drilling hole are constructed at a new drilling position after the frame is moved, and the anchor rod and the anchor cable are installed immediately after the construction is finished; meanwhile, a row of friction type constant-resistance upright posts are arranged on the side close to the goaf;
b. after the friction type constant-resistance upright post is installed, arranging a gangue blocking rhombic metal net along the side edge of filling, and binding the metal net on the upright post by using iron wires to ensure that a gangue filling body forms a stable filling side roadway side;
c. grouting and sealing the film: carrying out guniting treatment on the filling roadway side to form a grouting sealing section and sealing the goaf;
d. and after the steps are completed, forming the automatic gob-side entry retaining roadway of the section roadway.
Furthermore, in the invention, in the process of entering the mountain and retaining the roadway, a row of friction type constant-resistance upright columns are arranged along the goaf side, the distance is 1.5 times of the number of the upright columns arranged in the section roadway, the upright columns are inclined by 3-5 degrees along the goaf side, and other procedures are consistent with the section roadway gob-side entry retaining.
Has the advantages that: compared with the prior art, the invention has the following advantages: 1) filling mining is used as a component of a green mining technology, coal gangue is filled into a goaf, pollution of an earth surface gangue dump is controlled, and meanwhile, a filling body can well reduce movement deformation of a roof and control ore pressure to show; 2) combine together from becoming the lane and gob entry technique, reduce tunnelling and the alternative time of working face, it is efficient, have extensive practicality in this technical field.
Drawings
FIG. 1 is a face placement system diagram of the present invention;
FIG. 2 is a schematic view of the present face equipment;
FIG. 3 is a first alternative arrangement system diagram of the present invention;
FIG. 4 is a diagram of a second alternative arrangement of the present invention;
figure 5 is a schematic illustration of a section level (gob-side entry) support;
FIG. 6 is a schematic view of the principle of surface damage control;
in the figure: 1-transport ascending, 2-track ascending, 3-transport level I (first mining surface, first take-over surface), 4-return air level I (first mining surface), 5-first mining surface, 6-grouting sealing section, 7-take-over surface I, 8-transport level II (first take-over surface, second take-over surface), 9-take-over surface II, 10-return air level II (second take-over surface).
Detailed Description
The invention discloses a mine advancing type filling roadway mining method, wherein a coal cutter cuts a section of a roadway in the coal cutting process, and a filling roadway side is formed at the side of a goaf by using a solid filling technology; adopting a filling coal mining process for coal resource recovery and goaf filling; the advancing direction of the working surface adopts a forward type. The section roadway is gradually formed along with the mining of the working face, and the anchor rod, the anchor cable and the friction type constant-resistance upright post are adopted, and the filling slope thin film is subjected to grouting sealing and combined supporting. The transport drift and the return air drift of the first mining face are formed by adopting a filling automatic lane forming method; one section of the lane of the take-over surface is formed by adopting a method of filling automatic lane forming, and the other section of the lane is formed by filling the automatic lane forming by using the previous working surface. The function of the same section roadway is unchanged when the same section roadway continues to serve the next working face. The method has simple process, realizes the non-pillar mining, increases the resource recovery rate, lightens the pressure of upper and lower replacement of the stope face, and improves the stope efficiency.
The invention is further described below with reference to the figures and examples.
A mining method of mine advancing type filling roadway, a coal cutter cuts out the section of a section roadway in the coal cutting process, and the filling mining and filling automatic roadway forming are realized by utilizing a comprehensive mechanized solid filling technology; the filling mining refers to adopting a comprehensive mechanized solid filling mining method to carry out resource stoping and goaf full-section filling, and the advancing direction of a working face is forward; the automatic filling roadway forming means that a filling roadway side is formed on the side of a goaf by utilizing a comprehensive mechanized solid filling technology, an anchor rod, an anchor cable and a friction type constant-resistance upright column are adopted, thin film grouting sealing is carried out on the filling roadway side, combined supporting is carried out, and a section roadway is automatically formed step by step along with the mining of a working face; the transportation drift and the return air drift of the first mining surface of the mining area are formed by adopting a filling automatic lane forming method; one section roadway of the take-over surface is formed by adopting a method of filling automatic roadway formation, and the other section roadway is followed by the roadway formed by filling automatic roadway formation by using the previous working surface; the function is unchanged when the same section roadway continues to serve the next working face, namely if the transportation roadway of the previous working face is retained along the gob-side entry, the next working face continues to serve as the transportation roadway; and if the last working face air return gallery is retained along the gob-side entry, the next working face continues to serve as the air return gallery.
In the comprehensive mechanized solid compact filling mining method, the stoping process of the first mining face 5 is different from the roadway forming form and the stoping process of the replacing faces I7 and II 9, when the first mining face 5 is stoped, the transportation roadway I3 and the return air roadway I4 automatically form roadways along with mining by adopting the automatic filling roadway forming technology and are retained roadways along the empty space until the stoping of the first mining face 5 is finished; when the replacement face I7 is used for stoping, the air return drift I4 is continuously served as an air return drift, and the transportation drift II 8 adopts the filling automatic drift forming technology to automatically form a drift along with mining; and when the replacing face II 9 is mined, the transportation drift II 8 continues to serve as the transportation drift, and the return air drift II 10 automatically forms a drift along with mining by adopting the filling automatic drift forming technology.
Firstly, as shown in fig. 1 and 2, the stoping process of the first mining face 5 specifically includes the following steps:
a. the method comprises the following steps that (1) forward-type mining is carried out from a transport ascending hill 1 of a mining area and a track ascending hill 2 to the boundary of the mining area, a protective coal pillar of the ascending hill is not reserved, the ascending hill is reserved according to the filling automatic tunneling technology, a coal mining machine rides on a scraper conveyor to carry out coal cutting operation, and roadway sections of a transport roadway I3 and a return air roadway I4 are cut;
b. the exposed area of the end is large, a self-moving end hydraulic support is adopted for supporting, 2-3 supports are combined into a group, and a top plate is maintained;
c. the working face is internally provided with a moving support and then a pushing slide, and a cut-off distance exists between the pushing slide and the scraper conveyor. After the coal mining machine cuts coal, the support sequentially moves forwards along with the coal mining machine to support a top plate, the conveyor moves towards the mine wall section by section along with the moving support, and the moving step distance is equal to the cutting depth of the coal mining machine;
d. after the scraper conveyor in the working face is straightened, the multi-hole bottom-dump conveyor is moved to the rear part of the rear top beam of the filling hydraulic support, and filling operation is started;
e. and the filling operation is carried out while the automatic lane forming process of filling the transport level I3 and the return air level I4 is carried out.
Next, as shown in fig. 3, the extraction process of the successor face i 7 specifically includes the following steps:
a. carrying out forward mining from a transport upward mountain 1 of a mining area and a track upward mountain 2 to the boundary of the mining area without reserving upward mountain protection coal pillars, reserving the upward mountain according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to carry out coal cutting operation, and cutting the roadway section of a transport level roadway II 8;
the working procedures of b to d are consistent with those of b to d in the stoping process of the first mining face;
e. and the filling operation is carried out while the automatic filling roadway forming process of the transport level II 8 is implemented.
In addition, as shown in fig. 4, the extraction process of the successor plane ii 9 specifically includes the following steps:
a. carrying out forward type mining from a mining area transport ascending mountain 1 and a track ascending mountain 2 to the boundary of the mining area without reserving an ascending mountain protection coal pillar, reserving the ascending mountain according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to perform coal cutting operation, and cutting a tunnel section of a return air drift II 10;
the working procedures of b to d are consistent with those of b to d in the stoping process of the first mining face;
e. and the filling operation is carried out while the automatic filling roadway forming process of the return air roadway II 10 is implemented.
The roadway forming form and the stoping process of the subsequent succession surface are similar to the principles of the succession surface I7 and the succession surface II 9.
The roadway forming form and the stoping process of the other wing of the mining area are similar to the principle of the first mining surface 5, the taking-over surface I7 and the taking-over surface II 9 of the wing.
In the above steps, the filling sequence of the filling operation in the step d is carried out from the tail of the multi-hole bottom-discharge type conveyor to the head direction, after the previous discharge hole is discharged to a certain height, the next filling discharge hole is opened, the tamping mechanism at the rear part of the support where the previous discharge hole is located is immediately started, the jack pushes the tamping plate, the unloaded filling material is tamped, and the steps are repeated for 2-3 cycles until tamping is carried out.
Preferably, the filling automatic lane forming finger:
during stoping, a section roadway gob-side entry retaining cut by a coal mining machine is used as a section roadway service with the same function of the next working face, and the specific construction procedures can be divided into three parts: the method comprises the following steps of roadway top plate supporting, roadway filling side supporting and filling side film grouting sealing, wherein all the procedures are operated in parallel and completed in one coal mining cycle; the method comprises the following specific steps:
a. after the coal mining machine cuts out a section roadway section, the coal mining machine pushes the section roadway section to slide and move the frame, the end bracket moves forwards by a step distance, an anchor cable drilling machine carried at the rear part of the end bracket starts to work, an anchor rod and an anchor cable drilling hole are constructed at a new drilling position after the frame is moved, and the anchor rod and the anchor cable are installed immediately after the construction is finished; meanwhile, a row of friction type constant-resistance upright columns are arranged on the side close to the goaf, as shown in figure 5;
b. after the friction type constant-resistance upright post is installed, arranging a gangue blocking rhombic metal net along the side edge of filling, and binding the metal net on the upright post by using iron wires to ensure that a gangue filling body forms a stable filling side roadway side;
c. grouting and sealing the film: carrying out guniting treatment on the filling roadway side to form a grouting sealing section 6 and sealing the goaf;
d. and after the steps are completed, forming the automatic gob-side entry retaining roadway of the section roadway.
As a preferred embodiment, in the process of entering the mountain and retaining the roadway, a row of friction type constant-resistance upright columns are arranged along the goaf side, the distance is 1.5 times of the arrangement number of the upright columns of the section roadway, the upright columns of the section roadway incline 3-5 degrees along the goaf side, and other procedures are consistent with the gob-side entry retaining of the section roadway.
Examples
Compared with the prior art, the invention has the following advantages: 1) at present, in the coal industry, in order to ensure the yield and the benefit, the production operation is generally carried out by adopting a collapse method, serious pollution and damage are brought to the environment, according to the statistics of ' thirteen-five ' planning of the development of the coal industry ', about 7.95 hundred million t of waste rocks and 60.04 hundred million m are discharged every year in China3Mine water, about 6.56X 108m is produced each year2Collapse of land and destruction of underground water resource by about 22 hundred million m3As shown in fig. 6. Filling mining is used as a component of a green mining technology, coal gangue is filled into a goaf, pollution of an earth surface gangue dump is controlled, and meanwhile, a filling body can well reduce movement deformation of a roof and control ore pressure to show; 2) most of the existing gob-side entry retaining technologies are that a section roadway is firstly excavated to the boundary of the section, coal resources are mined after cutting holes are formed by penetrating through upper and lower section roadways, the section roadway shared by the upper and lower sections is retained by the gob-side entry retaining technology after mining is finished, and 3-5 m narrow coal pillars are left. The invention has the advantages that the self-entry and gob-side entry retaining technologies are combined, the time for alternating roadway driving and working face is reduced, and the efficiency is high.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. A mine advancing filling roadway mining method is characterized in that: cutting the section of the section roadway in the coal cutting process of the coal mining machine, and realizing filling mining and automatic roadway filling by utilizing a comprehensive mechanized solid filling technology; the filling mining refers to adopting a comprehensive mechanized solid filling mining method to carry out resource stoping and goaf full-section filling, and the advancing direction of a working face is forward; the automatic filling roadway forming means that a filling roadway side is formed on the side of a goaf by utilizing a comprehensive mechanized solid filling technology, an anchor rod, an anchor cable and a friction type constant-resistance upright column are adopted, thin film grouting sealing is carried out on the filling roadway side, combined supporting is carried out, and a section roadway is automatically formed step by step along with the mining of a working face; the transportation drift and the return air drift of the first mining surface of the mining area are formed by adopting a filling automatic lane forming method; one section roadway of the take-over surface is formed by adopting a method of filling automatic roadway formation, and the other section roadway is followed by the roadway formed by filling automatic roadway formation by using the previous working surface; the function is unchanged when the same section roadway continues to serve the next working face, namely if the transportation roadway of the previous working face is retained along the gob-side entry, the next working face continues to serve as the transportation roadway; and if the last working face air return gallery is retained along the gob-side entry, the next working face continues to serve as the air return gallery.
2. The mine advancing filling roadway mining method according to claim 1, wherein: in the comprehensive mechanized solid compact filling mining method, the stoping process of the first mining face (5) is different from the roadway forming form and the stoping process of the replacing face I (7) and the replacing face II (9), when the first mining face (5) is stoped, the transportation roadway I (4) and the return air roadway I (3) are automatically formed into a roadway along with mining by adopting the automatic filling roadway forming technology, and the roadway is retained along the empty until the stoping of the first mining face (5) is finished; when the replacing face I (7) is used for stoping, the return air drift I (3) is continuously served as a return air drift, and the transportation drift II (8) adopts the filling automatic drift forming technology to automatically form a drift along with mining; and when the replacing face II 9 is mined, the transport level II (8) continues to serve as the transport level, and the return air level II (10) automatically forms a roadway along with mining by adopting the filling automatic roadway forming technology.
3. The mine advancing filling roadway mining method according to claim 2, wherein: the stoping process of the first mining face (5) specifically comprises the following steps:
a. carrying out forward type back mining from a mining area transportation ascending (1) and a track ascending (2) to the boundary of the mining area without reserving an ascending protective coal pillar, reserving the ascending according to the filling automatic tunneling technology, riding a coal mining machine on a scraper conveyor to carry out coal cutting operation, and cutting the tunnel sections of a transportation gallery I (4) and a return air gallery I (3);
b. the exposed area of the end is large, a self-moving end hydraulic support is adopted for supporting, 2-3 supports are combined into a group, and a top plate is maintained;
c. the working face is internally provided with a moving support and then a pushing slide, and a cut-off distance exists between the pushing slide and the scraper conveyor. After the coal mining machine cuts coal, the support sequentially moves forwards along with the coal mining machine to support a top plate, the conveyor moves towards the mine wall section by section along with the moving support, and the moving step distance is equal to the cutting depth of the coal mining machine;
d. after the scraper conveyor in the working face is straightened, the multi-hole bottom-dump conveyor is moved to the rear part of the rear top beam of the filling hydraulic support, and filling operation is started;
e. the filling operation simultaneously implements the filling automatic entry forming process of the transportation drift I (4) and the return air drift I (3).
4. The mine advancing filling roadway mining method according to claim 1, wherein: the stoping process of the successor face I (7) specifically comprises the following steps:
a. carrying out forward mining towards the boundary of the mining area from a transport upward mountain (1) of the mining area and a track upward mountain (2), keeping no upward mountain protection coal pillars, keeping the upward mountain according to the filling automatic roadway forming technology, riding a coal mining machine on a scraper conveyor to carry out coal cutting operation, and cutting out the roadway section of a transport drift II (8);
b. the exposed area of the end is large, a self-moving end hydraulic support is adopted for supporting, 2-3 supports are combined into a group, and a top plate is maintained;
c. the working face is internally provided with a moving support and then a pushing slide, and a cut-off distance exists between the pushing slide and the scraper conveyor. After the coal mining machine cuts coal, the support sequentially moves forwards along with the coal mining machine to support a top plate, the conveyor moves towards the mine wall section by section along with the moving support, and the moving step distance is equal to the cutting depth of the coal mining machine;
d. after the scraper conveyor in the working face is straightened, the multi-hole bottom-dump conveyor is moved to the rear part of the rear top beam of the filling hydraulic support, and filling operation is started;
e. and the filling operation is carried out while the automatic filling roadway forming process of the transport level II (8) is carried out.
5. The mine advancing filling roadway mining method according to claim 1, wherein: the stoping process of the successor face II (9) specifically comprises the following steps:
a. carrying out forward type back mining from a mining area transportation ascending (1) and a track ascending (2) to the boundary of the mining area without reserving an ascending protective coal pillar, reserving the ascending according to the filling automatic roadway forming technology, riding a coal mining machine on a scraper conveyor to perform coal cutting operation, and cutting the roadway section of a return air drift II (10);
b. the exposed area of the end is large, a self-moving end hydraulic support is adopted for supporting, 2-3 supports are combined into a group, and a top plate is maintained;
c. the working face is internally provided with a moving support and then a pushing slide, and a cut-off distance exists between the pushing slide and the scraper conveyor. After the coal mining machine cuts coal, the support sequentially moves forwards along with the coal mining machine to support a top plate, the conveyor moves towards the mine wall section by section along with the moving support, and the moving step distance is equal to the cutting depth of the coal mining machine;
d. after the scraper conveyor in the working face is straightened, the multi-hole bottom-dump conveyor is moved to the rear part of the rear top beam of the filling hydraulic support, and filling operation is started;
e. and (3) performing filling operation and simultaneously implementing an automatic filling roadway forming process of the return air roadway II (10).
6. The mining method for mine advancing filling roadway according to any one of claims 3 to 5, characterized in that: and d, filling the filling operation of the step d is carried out from the tail of the multi-hole bottom-discharging type conveyor to the head direction, after the previous discharging hole is discharged to a certain height, the next filling discharging hole is opened, the tamping mechanism at the rear part of the support where the previous discharging hole is located is immediately started, the tamping plate is pushed by the jack, the discharged filling material is tamped, and the steps are repeated for 2-3 cycles until the material is tamped.
7. The mine advancing filling roadway mining method according to claim 1, wherein: the filling automatic lane forming finger:
during stoping, a section roadway gob-side entry retaining cut by a coal mining machine is used as a section roadway service with the same function of the next working face, and the specific construction procedures can be divided into three parts: the method comprises the following steps of roadway top plate supporting, roadway filling side supporting and filling side film grouting sealing, wherein all the procedures are operated in parallel and completed in one coal mining cycle; the method comprises the following specific steps:
a. after the coal mining machine cuts out a section roadway section, the coal mining machine pushes the section roadway section to slide and move the frame, the end bracket moves forwards by a step distance, an anchor cable drilling machine carried at the rear part of the end bracket starts to work, an anchor rod and an anchor cable drilling hole are constructed at a new drilling position after the frame is moved, and the anchor rod and the anchor cable are installed immediately after the construction is finished; meanwhile, a row of friction type constant-resistance upright posts are arranged on the side close to the goaf;
b. after the friction type constant-resistance upright post is installed, arranging a gangue blocking rhombic metal net along the side edge of filling, and binding the metal net on the upright post by using iron wires to ensure that a gangue filling body forms a stable filling side roadway side;
c. grouting and sealing the film: carrying out guniting treatment on the filling roadway side to form a grouting sealing section and sealing the goaf;
d. and after the steps are completed, forming the automatic gob-side entry retaining roadway of the section roadway.
8. The mine advancing filling roadway mining method and the construction method thereof according to claim 1, wherein: and in the process of entering the mountain and retaining the roadway, a row of friction type constant-resistance upright posts are arranged along the goaf side, the distance is 1.5 times of the arrangement number of the upright posts of the section roadway, the upright posts of the section roadway are inclined by 3-5 degrees along the goaf side, and other procedures are consistent with the gob-side entry retaining of the section roadway.
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