CN110905506A - Coal mine barrel underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method - Google Patents
Coal mine barrel underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method Download PDFInfo
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- CN110905506A CN110905506A CN201911211350.1A CN201911211350A CN110905506A CN 110905506 A CN110905506 A CN 110905506A CN 201911211350 A CN201911211350 A CN 201911211350A CN 110905506 A CN110905506 A CN 110905506A
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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
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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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
Abstract
The invention provides a coal mine underground coal mine barrel coal-pressing odd-even partition circulating continuous mining and continuous filling mining method, which comprises the following steps: before mining, dividing a coal bed in a mining range into rectangular odd-even areas with equal width and equal length for excavation and mining, firstly excavating an odd area during excavation, constructing an even area after the construction of the odd area is finished, filling the last excavated area while excavating a new area, and sequentially circulating continuous mining and filling until the mining of a working face is finished; in the process of mining and in the later stage of mining, a monitoring scheme is formulated, the deformation of a shaft and a filling body is monitored, an emergency plan of large deformation of the shaft is formulated, the safety and the stability of the shaft are ensured, and the safety coefficient of the shaft is improved while the resources of coal are replaced to the maximum extent, so that the method is an important method for solving the problem of resource exhaustion in old mines and is also an idea for coal enterprises to implement a green mining idea.
Description
Technical Field
The invention relates to the technical field of filling mining of coal mines, in particular to an odd-even partition circulating continuous mining and continuous filling mining method for mining a protective coal pillar of a coal mine shaft.
Background
The shaft of a coal mine is one of the most important roadways of the mine and is generally responsible for the tasks of transportation, ventilation, drainage, pedestrians and the like of the whole mine. Generally, to avoid the influence of the mining on the shaft, a larger range of shaft protection coal pillars are left in the mining design stage, so that more coal resources are pressed down by the shaft and cannot be mined. Meanwhile, some mines with large mining depths (more than kilometers) and long mining time are influenced by mining conditions, policies and the like, the mines have the problems of continuous mining tension, resource exhaustion and the like, and the mines face the risk of closing the wells.
According to the mine green mining strategy proposed by the state, the coal mine shaft and other protected coal pillar mining become important ways for excavating self resource potential of some mines by combining the self conditions of the coal mine, and the method is also an important method for solving the problem of resource exhaustion of some old mines.
In summary, there is a need to explore a mining method for mining coal resources, which can protect the stability of the shaft and achieve high recovery rate, and has important significance for the sustainable development of mines.
Therefore, the technical personnel in the field provide a coal mine underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method to solve the problems in the background technology.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a coal mine underground coal mine barrel coal-pressing odd-even partition circulating continuous mining and continuous filling mining method is characterized in that: which comprises the following steps:
s1, dividing the coal seam in the mining range into rectangular odd-even areas with equal width and equal length before mining;
s2, during mining, excavating an odd number area during excavation, constructing an even number area after the construction of the odd number area is finished, filling a new area and the last excavated area, and performing circulating continuous mining and continuous filling operation in sequence until the mining of a working face is finished;
and S3, in the process of mining and in the later stage of mining, formulating a monitoring scheme, monitoring the deformation of the shaft and the filling body, and simultaneously formulating an emergency plan of large deformation of the shaft to ensure the safety and stability of the shaft.
The mode of dividing the coal seam in the mining range into odd and even areas in S1 is as follows: the coal face is sequentially numbered 1, 2, 3, 4 and 5 … in the sequence with 20m as a unit in the inclined direction, the odd numbered regions are used as odd numbered regions, and the even numbered regions are used as even numbered regions.
In the step S2, the operations of excavation, replacement, continuous mining and continuous mining are sequentially and circularly carried out as follows: tunneling is used for replacing coal mining, an odd number area 1 is tunneled, after the odd number area 1 is tunneled, an even number area 2 is skipped, an odd number area 3 is tunneled, meanwhile, the odd number area 1 is ready to be filled, the speed of filling the odd number area 1 is larger than or equal to the speed of tunneling the odd number area 3, and the like; after the odd number areas are dug and filled, the even number areas 2 are dug, and the even number areas 4 … are dug while the even number areas 2 are filled after the digging is finished, and the circular mining is carried out in sequence until the mining is finished.
When filling the parity area in S2, the following preparation is required: constructing a retaining wall and a supporting top plate at the end of a lower roadway mining area of a coal face, and laying a steel wire mesh in unexplored areas or filling areas on two sides to create a filling space; and (3) paving a filling pipeline on the upper lane of the coal face, and filling the filling material from bottom to top by using the height difference between the upper lane and the lower lane.
The monitoring scheme in S3 includes the positions, numbers and observations of the observation stations disposed at the surface of the wellbore, in the wellbore and in the filling zone, which are: on the ground of the shaft, a first ground monitoring line and a second ground monitoring line are arranged in a ray shape, wherein the first ground monitoring line is parallel to the trend of the working surface, the total length is 500m, 11 measuring points are arranged, the distance between the measuring points is 50m, and the measuring points are used for measuring the absolute horizontal displacement and the subsidence at the measuring points; the ground monitoring line II is perpendicular to the ground monitoring line I, the total length of the ground monitoring line II is 300m, 7 measuring points are arranged, the distance between the measuring points is 50m, and the ground monitoring line II is used for measuring the absolute horizontal displacement and the subsidence of the measuring points; in a shaft with the depth of 1000m, in the depth range of 0-400 m, each 50m is provided with one measuring station, in the depth range of 400 m-1000 m, each 100m is provided with one measuring station, the positions of 15 measuring stations are arranged, and each measuring station is required to measure the offset of four points on the section; in the filling area, an observation station is provided for each 100m unit to observe the amount of deformation of the filling body.
The emergency plan for large deformation of the shaft in S3 includes reducing the width of the odd-even filling area, reducing the advancing speed of the working surface, improving the filling rate and filling strength of the filling body and reinforcing the shaft.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and filling mining method based on a spear shield body for protecting a coal bed and a coal mine shaft, which can replace more coal resources through a filling body and effectively ensure the stability of the shaft, is a new technology for green mining of coal mines, which is required by mine enterprises and advocated by the state, has important significance for the sustainable development of the mines, and is a safe, economic and environment-friendly technology.
Drawings
FIG. 1 is a flow chart of the coal mine shaft underground coal-pressing odd-even zoning circulation continuous mining and continuous filling mining method of the invention;
FIG. 2 is a schematic plan view of the coal mine shaft underground coal-pressing odd-even zoning circulating continuous mining and continuous filling mining method of the invention;
FIG. 3 is a schematic cross-sectional view of the coal mine shaft underground coal-pressing odd-even zoning circulating continuous mining and continuous filling mining method of the invention;
FIG. 4 is a diagram of the positions of a shaft and a mining area of the coal mine shaft underground coal-pressing odd-even zoning circulating continuous mining and filling mining method of the invention;
in the figure: a1-filling the pipeline; a2 — parity partitioning; a3-a heading machine; A-A-a ground monitoring line I; B-B-ground monitoring line II; d is the horizontal distance of the wellbore from the production zone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-4, the present invention provides a technical solution: a coal mine underground coal mine barrel coal-pressing odd-even partition circulating continuous mining and continuous filling mining method comprises the following steps:
s1, before mining by adopting a heading machine A3, dividing the coal seam in a mining range into odd-even areas A2 which are rectangular in equal width and length;
s2, during mining, excavating an odd number area during excavation, constructing an even number area after the construction of the odd number area is finished, filling a new area and the last excavated area, and performing circulating continuous mining and continuous filling operation in sequence until the mining of a working face is finished;
and S3, in the process of mining and in the later stage of mining, formulating a monitoring scheme, monitoring the deformation of the shaft and the filling body, and simultaneously formulating an emergency plan of large deformation of the shaft to ensure the safety and stability of the shaft.
As shown in fig. 2, in this embodiment, the manner of dividing the coal seam in the mining area into odd and even areas in S1 is as follows: the coal face is sequentially numbered 1, 2, 3, 4 and 5 … in the sequence with 20m as a unit in the inclined direction, the odd numbered regions are used as odd numbered regions, and the even numbered regions are used as even numbered regions.
As shown in fig. 2, in the present embodiment, the excavation mining, sequential circulation mining and continuous mining operations in S2 are: tunneling is used for replacing coal mining, an odd number area 1 is tunneled, after the odd number area 1 is tunneled, an even number area 2 is skipped, an odd number area 3 is tunneled, meanwhile, the odd number area 1 is ready to be filled, the speed of filling the odd number area 1 is larger than or equal to the speed of tunneling the odd number area 3, and the like; after the odd number areas are dug and filled, the even number areas 2 are dug, and the even number areas 4 … are dug while the even number areas 2 are filled after the digging is finished, and the circular mining is carried out in sequence until the mining is finished.
In this embodiment, when filling the parity area in S2, the following preparation is required: constructing a retaining wall and a supporting top plate at the end of a lower roadway mining area of a coal face, and laying a steel wire mesh in unexplored areas or filling areas on two sides to create a filling space; and laying a filling pipeline A1 on the upper lane of the coal face, and filling the filling material from bottom to top by using the height difference between the upper lane and the lower lane.
Referring to fig. 4, in this embodiment, the monitoring scheme in S3 includes the positions, numbers and observations of the observation stations disposed at the surface of the wellbore, in the wellbore and in the filling area, which are respectively: on the ground of the shaft, a first ground monitoring line A-A and a second ground monitoring line B-B are arranged in a ray shape, wherein the first ground monitoring line is parallel to the trend of the working surface, the total length is 500m, 11 measuring points are arranged, the distance between the measuring points is 50m, and the measuring points are used for measuring the absolute horizontal displacement and the subsidence at the measuring points; the ground monitoring line II is perpendicular to the ground monitoring line I, the total length of the ground monitoring line II is 300m, 7 measuring points are arranged, the distance between the measuring points is 50m, and the ground monitoring line II is used for measuring the absolute horizontal displacement and the subsidence of the measuring points; in a shaft with the depth of 1000m, in the depth range of 0-400 m, each 50m is provided with one measuring station, in the depth range of 400 m-1000 m, each 100m is provided with one measuring station, the positions of 15 measuring stations are arranged, and each measuring station is required to measure the offset of four points on the section; in the filling area, an observation station is provided for each 100m unit to observe the amount of deformation of the filling body.
In this embodiment, the emergency plan for large deformation of the wellbore formulated in S3 includes narrowing the width of the odd-even filling zone, reducing the speed of the face advancing, improving the filling rate and filling strength of the filling body, and reinforcing the wellbore.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A coal mine underground coal mine barrel coal-pressing odd-even partition circulating continuous mining and continuous filling mining method is characterized in that: which comprises the following steps:
s1, dividing the coal seam in the mining range into rectangular odd-even areas with equal width and equal length before mining;
s2, during mining, excavating an odd number area during excavation, constructing an even number area after the construction of the odd number area is finished, filling a new area and the last excavated area, and performing circulating continuous mining and continuous filling operation in sequence until the mining of a working face is finished;
and S3, in the process of mining and in the later stage of mining, formulating a monitoring scheme, monitoring the deformation of the shaft and the filling body, and simultaneously formulating an emergency plan of large deformation of the shaft to ensure the safety and stability of the shaft.
2. The coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method according to claim 1, characterized in that: the mode of dividing the coal seam in the mining range into odd and even areas in the S1 is as follows: the coal face is sequentially numbered 1, 2, 3, 4 and 5 … in the sequence with 20m as a unit in the inclined direction, the odd numbered regions are used as odd numbered regions, and the even numbered regions are used as even numbered regions.
3. The coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method according to claim 1, characterized in that: in the step S2, the operations of excavation, replacement, continuous mining and continuous mining are sequentially and circularly carried out as follows: tunneling is used for replacing coal mining, an odd number area 1 is tunneled, after the odd number area 1 is tunneled, an even number area 2 is skipped, an odd number area 3 is tunneled, meanwhile, the odd number area 1 is ready to be filled, the speed of filling the odd number area 1 is larger than or equal to the speed of tunneling the odd number area 3, wherein the even number area 2 has the functions of supporting an overlying strata and isolating a goaf, and the like; after the odd number areas are dug and filled, the even number areas are dug according to the method until the pushing and mining are finished, when the odd number areas are dug, the solid coal in the even number areas plays a role in supporting and blocking, and when the even number areas are dug, the filling bodies in the odd number areas play a role in supporting and blocking.
4. The coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method according to claim 1, characterized in that: when filling the parity area in S2, the following preparation is required: constructing a retaining wall and a supporting top plate at the end of a lower roadway mining area of a coal face, and laying a steel wire mesh in unexplored areas or filling areas on two sides to create a filling space; paving a filling pipeline on an upper lane of a coal face, and filling the filling material from bottom to top by utilizing the height difference between the upper lane and the lower lane; and laying a transportation rail at the lower lane of the working face so as to transport coal from the lower lane.
5. The coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method according to claim 1, characterized in that: the monitoring scheme in S3 includes the positions, numbers and observations of the observation stations disposed at the surface of the wellbore, in the wellbore and in the filling zone, which are: on the ground of the shaft, a first ground monitoring line and a second ground monitoring line are arranged in a ray shape, wherein the first ground monitoring line is parallel to the trend of the working surface, the total length is 500m, 11 measuring points are arranged, the distance between the measuring points is 50m, and the measuring points are used for measuring the absolute horizontal displacement and the subsidence at the measuring points; the ground monitoring line II is perpendicular to the ground monitoring line I, the total length of the ground monitoring line II is 300m, 7 measuring points are arranged, the distance between the measuring points is 50m, and the ground monitoring line II is used for measuring the absolute horizontal displacement and the subsidence of the measuring points; in a shaft with the depth of 1000m, in the depth range of 0-400 m, each 50m is provided with one measuring station, in the depth range of 400 m-1000 m, each 100m is provided with one measuring station, the positions of 15 measuring stations are arranged, and each measuring station is required to measure the offset of four points on the section; in the filling area, an observation station is provided for each 100m unit to observe the amount of deformation of the filling body.
6. The coal mine shaft underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method according to claim 1, characterized in that: the emergency plan for large deformation of the shaft in S3 includes reducing the width of the odd-even area, reducing the speed of the working face, improving the filling rate and filling strength of the filling body and reinforcing the shaft.
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| CN201911211350.1A CN110905506B (en) | 2019-11-29 | 2019-11-29 | Coal mine barrel underground coal-pressing odd-even partition circulating continuous mining and continuous filling mining method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140233A (en) * | 2020-04-07 | 2020-05-12 | 北京中矿创新联盟能源环境科学研究院 | Pillar-free advancing coal mining method for thin coal seam |
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| CN1483921A (en) * | 2002-09-18 | 2004-03-24 | 杨新兴 | Cavern filling type coal mining method |
| CN102426009A (en) * | 2011-09-15 | 2012-04-25 | 新汶矿业集团有限责任公司 | Rock movement observation method for filling and mining coal mine |
| CN105041319A (en) * | 2015-08-25 | 2015-11-11 | 袁伟昊 | Mine colliery lane manless working face and filling mining method |
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2019
- 2019-11-29 CN CN201911211350.1A patent/CN110905506B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483921A (en) * | 2002-09-18 | 2004-03-24 | 杨新兴 | Cavern filling type coal mining method |
| CN102426009A (en) * | 2011-09-15 | 2012-04-25 | 新汶矿业集团有限责任公司 | Rock movement observation method for filling and mining coal mine |
| CN105041319A (en) * | 2015-08-25 | 2015-11-11 | 袁伟昊 | Mine colliery lane manless working face and filling mining method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140233A (en) * | 2020-04-07 | 2020-05-12 | 北京中矿创新联盟能源环境科学研究院 | Pillar-free advancing coal mining method for thin coal seam |
| CN111140233B (en) * | 2020-04-07 | 2020-08-07 | 北京中矿创新联盟能源环境科学研究院 | Pillar-free advancing coal mining method for thin coal seam |
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