CN109882240B - Open-air end slope coal-pressing filling mining system - Google Patents
Open-air end slope coal-pressing filling mining system Download PDFInfo
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- CN109882240B CN109882240B CN201910246912.XA CN201910246912A CN109882240B CN 109882240 B CN109882240 B CN 109882240B CN 201910246912 A CN201910246912 A CN 201910246912A CN 109882240 B CN109882240 B CN 109882240B
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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
- E21F15/06—Filling-up mechanically
Abstract
The invention discloses a surface end slope coal-pressing filling mining system which comprises the steps of automatic coal cutting during tunneling, automatic pipe distribution, roadway opening sealing, automatic filling of pipelines and automatic monitoring of full roadway. When the heading machine is heading and cutting coal, the mechanical arm is extended to drag the filling pipeline to advance, the pipeline is automatically arranged at the bottom end of one side of the roadway, after the extraction is finished, the mechanical arm is withdrawn along with the heading machine and separated from the filling pipeline, and the pipeline is left in place, so that automatic pipe distribution is realized; and (3) arranging a monitoring pipeline on the flat disc corresponding to the filling roadway, sending a signal through the monitoring pipeline after the roadway is filled with the cemented filling material, stopping pumping slurry to the filling pipeline by using a filling pump, thereby completing roadway filling, namely realizing automatic monitoring of the full roadway. The process combines a cemented filling coal mining process and an end slope tunneling coal mining process, and utilizes an unmanned filling working face to mine open-air end slope pressing coal, so that automatic pipe distribution and full roadway monitoring are realized.
Description
Technical Field
The invention belongs to the field of mine filling mining processes, and particularly relates to an open-air end slope coal-pressing filling mining system.
Background
Because the mining intensity of part of opencast coal mines in China is high, the mining time is long, and coal resources which are easy to open and mine in opencast boundaries are basically mined. However, the pit slope pressure occupies a large amount of coal resources, if abandonment and non-mining are carried out, serious waste of the coal resources is caused, the sustainable development of coal mines is not facilitated, and meanwhile, the country suffers great resource loss; and the left coal is weathered by contacting with oxygen for a long time, so that natural fire is easily generated, and serious threats are caused to the surrounding natural environment and the safety of villages.
The main method for recovering the slope coal generally is to carry out end slope mining, but the end slope mining is carried out under the conditions of incomplete top plate and insufficient strength, so that the top plate of a coal seam is easy to fall off in a large area, machines are damaged, and the safety of personnel is damaged; a large number of coal pillars are required to be reserved in the end slope mining process for maintaining mining safety, the coal pillars are reserved to influence the coal mining rate, and natural fire disasters are easy to generate; and the end slope mining can cause surface subsidence and slope management difficulty.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an open-pit end slope coal-pressing filling mining system, which overcomes the defects of the existing mining mode, can realize the recovery of a large amount of coal resources, can reduce the surface subsidence, and ensures the safety of a stope and the stability of a side slope.
The technical scheme adopted by the invention is as follows:
the invention relates to an open-air end slope coal-pressing filling mining system, which comprises the following components: the excavator automatically excavates a roadway to cut coal under the end slope step, and a mechanical arm hinged with the excavator is connected with the outlet end of the filling pipeline and dragged to be laid in the roadway; the inlet end of the filling pipeline is connected with an external filling pump; the filling pump is externally connected with an inlet P of a two-position three-way electromagnetic valve, and two outlets A, B of the two-position three-way electromagnetic valve are respectively connected with a filling pipeline in the roadway and an external wastewater pool; and vertically drilling a hole to a goaf on a flat disc corresponding to the roadway, embedding a monitoring pipeline, and respectively arranging electrodes on two sides inside the monitoring pipeline higher than the flat disc, wherein the electrodes are externally connected with an electric wire to an electromagnet of the two-position three-way electromagnetic valve.
Furthermore, the mechanical arm is formed by hinging a hinge support arm and a fixed support arm at the top, wherein the hinge support arm and the fixed support arm are both L-shaped, and the vertical section and the horizontal section of the fixed support arm are fixedly connected; the hinged support arm is matched and arranged at the inner side of the fixed support arm and is formed by hinging a telescopic section and a horizontal section, and the horizontal section is provided with a plurality of pin holes;
and a reinforcing hoop is arranged at the front end of the filling pipeline, an outward extending platform is welded on the reinforcing hoop, and a pin hole correspondingly matched with the horizontal section of the hinged support arm is formed in the outward extending platform.
The telescopic section of the hinge support arm is formed by sleeving an upper large pipe and a lower small pipe.
The monitoring pipe is made of PVC pipe, the upper opening of the monitoring pipe is 200mm higher than the flat disc, two electrodes are symmetrically arranged at the same horizontal position of the two sides in the pipeline and the ground surface of the flat disc, and the electrodes are not conducted with each other.
Further, the invention relates to an open-pit end slope coal-pressing filling mining system, which comprises the following steps:
(1) tunneling automatic coal cutting: the development machine automatically develops and cuts coal, and the coal is conveyed out of the roadway by the rubber belt conveyor;
(2) automatic pipe distribution: the development machine stretches out of the mechanical arm to drag a filling pipeline, the filling pipeline is continuously pushed along with the development machine, the filling pipeline is automatically arranged at the bottom end of one side of the roadway, when the development machine is pushed to a mining stopping line, coal cutting is stopped, the equipment is withdrawn from the filling roadway, and the filling pipeline is left in the roadway;
(3) sealing the entrance of the roadway: erecting a filling bag at the entry of the roadway, and filling and expanding by using the filling bag to seal the entry of the roadway;
(4) automatic filling of pipelines: starting a filling pump, and performing filling procedures of filling water in a pipeline, pushing water by mortar, pushing mortar by cemented filling materials and pumping the cemented filling materials;
(5) automatic monitoring in full lane: after the roadway is filled with the cemented filling material, the monitoring pipeline is filled with the cemented filling material, the electrodes on the two sides are communicated, a signal is sent to the two-position three-way electromagnetic valve through the monitoring pipeline, the filling pump is controlled to stop pumping slurry to the filling pipeline, automatic monitoring of the roadway filling is realized, and the roadway filling is completed.
Further, the automatic pipe distribution process comprises the following steps:
before the heading machine enters a roadway, a hinge support arm of a mechanical arm and a reinforcing hoop are assembled by a pin, when the heading machine advances, the mechanical arm and the reinforcing hoop are connected into a whole to drag a filling pipeline to advance forwards, after the recovery is finished, a fixed support arm is withdrawn along with the heading machine, the pin supported by the fixed support arm gradually falls off, finally, the hinge support arm is separated from the reinforcing hoop, and the filling pipeline is left in place.
Further, the full lane automatic monitoring process comprises the following steps:
when the roadway is not filled, no cemented filling material is in the monitoring pipeline, the two electrodes are not conducted, the two-position three-way electromagnetic valve is in a normal state, namely, the filling pump is connected with the filling pipeline to fill the roadway; after the roadway is full, the monitoring pipeline is filled with cemented filling materials, the two electrodes are conducted, the two-position three-way electromagnetic valve is in an electrically excited state, namely the filling pump is connected with the wastewater pool, the cemented filling materials in the filling pump are led into the wastewater pool, and the roadway filling is finished.
Has the advantages that: compared with the prior art, the open-air end slope coal-pressing filling mining system provided by the invention has the following advantages:
(1) the invention combines the cemented filling coal mining process and the end slope tunneling coal mining process for the industrial mine, solves the problem of recovering the end slope pressing coal resources of the strip mine, and improves the resource recovery rate.
(2) The invention realizes the automation of coal mining and filling, has no human on the working face, can effectively improve the production efficiency and the production safety of the working face, and reduces the production cost and the labor intensity of workers.
(3) The invention treats solid wastes such as gangue, dumping and the like in a large scale and meets the requirement of development of green mines; the surface subsidence caused by end slope mining is reduced, and the requirement of keeping the stability of the side slope is met.
Drawings
FIG. 1 is a schematic illustration of a surface highwall coal briquetting process according to the present invention;
FIG. 2 is a schematic view of the open-air end slope coal-pressing filling process of the present invention;
FIG. 3 is a schematic view of a mounting arm of the present invention;
FIG. 4 is a schematic view of the hinge arm of the present invention;
FIG. 5 is a schematic view of a reinforcing hoop of the present invention;
FIG. 6 is a schematic view of the monitoring circuit of the present invention;
FIG. 7 is a schematic view of a robotic arm drag line of the present invention;
FIG. 8 is a schematic view of the robot arm of the present invention disengaged from the pipeline;
FIG. 9 is a schematic view of the full lane automatic monitoring principle of the present invention;
in the figure: 1. the device comprises a heading machine, 2, an end slope step, 3, a roadway, 4, an end slope coal pressing, 5, a filling pipeline, 6, a filling bag, 7, a filling pump, 8, a monitoring pipeline, 9, a wastewater tank, 10, a reinforcing hoop, 11, an extending platform, 12, a mechanical arm, 121, a hinged arm, 122, a fixed support arm, 13, a pin, 141, electrodes a and 142, electrodes b and 15, a slurry hopper, 16, a two-position three-way electromagnetic valve, 17 and an electromagnet.
Detailed Description
The invention provides an open-air end slope coal-pressing filling mining process, which can realize the recovery of a large amount of coal resources, reduce the surface subsidence and ensure the safety of a stope and the stability of a side slope.
The present invention will be further described with reference to the accompanying drawings.
The invention discloses a surface end slope coal-pressing filling mining system, which comprises the following components as shown in figures 1 and 2: the heading machine 1 automatically tunnels a roadway 3 under the end slope step 2, the end slope pressed coal 4 is mined, the coal is loaded into a middle scraper-trough conveyer from a rake claw of the heading machine 1 and transferred onto a rubber belt conveyor, and is transported out of the roadway 3 by the rubber belt conveyor, and a mechanical arm hinged with the heading machine 1 is connected with the outlet end of a filling pipeline and is continuously pushed along with the heading machine 1 to drag the filling pipeline to be laid in the roadway 3; the inlet end of the filling pipeline 5 is connected with an external filling pump 7; the filling pump 7 is externally connected with an inlet P of a two-position three-way electromagnetic valve 16, and two outlets A, B of the two-position three-way electromagnetic valve 16 are respectively connected with a filling pipeline 5 in the roadway and an external wastewater pool 9; and vertically drilling a hole to a goaf on a flat disc corresponding to the roadway 3, burying a monitoring pipeline 8, and respectively arranging electrodes on two sides in the monitoring pipeline 8 higher than the flat disc and externally connecting an electric wire to an electromagnet 17 of the two-position three-way electromagnetic valve 16.
Further, the mechanical arm 12 is formed by hinging a hinged arm 121 and a fixed arm 122 which are both in an L shape at the top, and the vertical section and the horizontal section of the fixed arm 122 are fixedly connected, as shown in fig. 3; the hinged support arm 121 is arranged inside the fixed support arm 122 in a matching manner and is formed by hinging a telescopic section and a horizontal section, and the horizontal section is provided with a plurality of pin holes, as shown in fig. 4;
the telescopic section of the hinge support arm is formed by sleeving an upper large pipe and a lower small pipe.
A reinforcing hoop 10 is installed at the front end of the filling pipeline 5, as shown in fig. 5, an overhanging platform 11 is welded on the reinforcing hoop 10, and a pin hole correspondingly matched with the horizontal section of the hinge support arm 121 is formed in the overhanging platform;
the monitoring pipeline 8 is made of PVC pipe, the upper opening is 200mm higher than the flat disc, two electrodes are symmetrically arranged at the same horizontal position of the two sides in the pipeline and the surface of the flat disc, and the electrodes are not conducted with each other, as shown in FIG. 6.
Further, the invention relates to an open-pit end slope coal-pressing filling mining system, which comprises the following steps:
(1) tunneling automatic coal cutting: the development machine 1 automatically develops and cuts coal, and the coal is conveyed out of the roadway 3 by a rubber belt conveyor;
(2) automatic pipe distribution: the development machine 1 stretches out of the mechanical arm 12 to drag the filling pipeline 5, the filling pipeline 5 is continuously pushed along with the development machine, the filling pipeline 5 is automatically arranged at the bottom end of one side of the roadway 3, when the development machine 1 is pushed to a mining stop line, coal cutting is stopped, the development machine 1 and the rubber belt conveyor are withdrawn from the roadway 3 in a mode that a machine set automatically retreats and a loader auxiliary force is pulled outwards, and the filling pipeline 5 is left in the roadway;
(3) sealing the entrance of the roadway: erecting a filling bag 6 at the entry of the roadway, and filling and expanding by using the filling bag to seal the entry of the roadway;
(4) automatic filling of pipelines: starting a filling pump 7 to perform filling procedures of filling water into the pipeline, pushing water by mortar, pushing mortar by cemented filling materials and pumping the cemented filling materials;
(5) automatic monitoring in full lane: after the roadway is filled with the cemented filling material, the monitoring pipeline is filled with the cemented filling material, the electrodes on the two sides are communicated, a signal is sent to the two-position three-way electromagnetic valve 16 through the monitoring pipeline, the filling pump 7 is controlled to stop pumping slurry to the filling pipeline 5, the roadway filling is automatically monitored, and the roadway filling is completed.
Further, the automatic pipe distribution process comprises the following steps:
before the heading machine 1 enters the roadway 3, the hinged arm 121 of the mechanical arm 12 and the reinforcing hoop 10 are assembled by the pin 13, and when the heading machine 1 advances, the mechanical arm 12 and the reinforcing hoop 10 are connected into a whole to drag the filling pipeline 5 to advance forwards, as shown in fig. 7; after recovery is complete, the fixed arm 122 is retracted with the machine 1 and the pins 13 supported thereby are progressively released, and finally the hinge arm 121 is disengaged from the reinforcing collar 10 and the filling line 5 is left in place, as shown in figure 8.
Further, the full lane automatic monitoring process comprises the following steps:
when the roadway is not filled, no cemented filling material exists in the monitoring pipeline 8, the two electrodes are not conducted, the two-position three-way electromagnetic valve 16 is in a normal state, namely the filling pump 7 is connected with the filling pipeline 5, and the roadway is filled; after the roadway is filled, the monitoring pipeline 8 is filled with the cemented filling material, the two electrodes are conducted, the two-position three-way electromagnetic valve 16 is in an electrically excited state, namely, the filling pump 7 is connected with the wastewater pond 9, the cemented filling material in the filling pump is introduced into the wastewater pond 9, and the roadway filling is finished, as shown in fig. 9.
Claims (6)
1. The open-air end slope coal-pressing filling mining system is characterized in that a heading machine (1) automatically tunnels a roadway (3) under an end slope step (2) to cut coal, and a mechanical arm (12) hinged with the heading machine (1) is connected with the outlet end of a filling pipeline (5) and dragged to be laid in the roadway (3); the inlet end of the filling pipeline (5) is connected with an external filling pump (7);
the filling pump (7) is externally connected with an inlet (P) of a two-position three-way electromagnetic valve (16), and two outlets (A, B) of the two-position three-way electromagnetic valve (16) are respectively connected with a filling pipeline (5) in the roadway and an external wastewater pool (9);
vertically drilling a hole on a flat disc corresponding to the roadway (3) to a goaf, burying a monitoring pipeline (8), arranging electrodes on two sides of the inside of the monitoring pipeline (8) higher than the flat disc respectively, and externally connecting an electric wire to an electromagnet (17) of the two-position three-way electromagnetic valve (16);
the mechanical arm (12) is formed by hinging a hinge support arm (121) and a fixed support arm (122) which are both L-shaped at the top, and the vertical section and the horizontal section of the fixed support arm (122) are fixedly connected; the hinge support arm (121) is matched and arranged on the inner side of the fixed support arm (122) and is formed by hinging a telescopic section and a horizontal section, and the horizontal section of the hinge support arm is provided with a plurality of pin holes;
the front end of the filling pipeline (5) is provided with a reinforcing hoop (10), the reinforcing hoop (10) is welded with an outward extending platform (11), and a pin hole correspondingly matched with the horizontal section of the hinge support arm (121) is formed in the reinforcing hoop (10).
2. The open end slope pack coal pack filling and mining system of claim 1, wherein the telescoping section of the hinge arm (121) is comprised of an upper and a lower large and small sleeved sections.
3. The open-air end slope coal-pressing filling mining system according to claim 1, wherein the monitoring pipeline (8) is made of PVC pipe, the upper opening of the monitoring pipeline is 200mm higher than the flat plate, two electrodes are symmetrically arranged on two sides in the pipeline at the same level with the ground surface of the flat plate, and the electrodes are not conducted with each other.
4. A mining process for a surface end slope pack coal pack mining system as claimed in any one of claims 1 to 3, comprising the steps of:
(1) tunneling automatic coal cutting: the development machine (1) automatically develops and cuts coal, and the coal is conveyed out of the roadway (3) by a rubber belt conveyor;
(2) automatic pipe distribution: the development machine (1) stretches out of the mechanical arm (12) to drag the filling pipeline (5), the filling pipeline (5) is continuously pushed along with the development machine, the filling pipeline (5) is automatically arranged at the bottom end of one side of the roadway (3), when the development machine (1) is pushed to a mining stopping line, coal cutting is stopped, equipment is withdrawn from the filling roadway, and the filling pipeline (5) is left in the roadway;
(3) sealing the entrance of the roadway: erecting a filling bag (6) at the entry of the roadway, and filling and expanding by using the filling bag to seal the entry of the roadway;
(4) automatic filling of pipelines: starting a filling pump (7), and performing filling procedures of filling water in a pipeline, pushing water by mortar, pushing mortar by cemented filling materials and pumping the cemented filling materials;
(5) automatic monitoring in full lane: after the roadway is filled with the cemented filling materials, the monitoring pipeline is filled with the cemented filling materials, the electrodes on the two sides are communicated, signals are sent to the two-position three-way electromagnetic valve (16) through the monitoring pipeline, the filling pump (7) is controlled to stop pumping slurry to the filling pipeline (5), the roadway filling is automatically monitored, and the roadway filling is completed.
5. The mining process of the open-pit end slope coal-pressing filling mining system according to claim 4, wherein the automatic pipe distribution process is as follows:
before the heading machine (1) enters a roadway (3), a hinged support arm (121) of a mechanical arm (12) and a reinforcing hoop (10) are assembled by a pin (13), when the heading machine (1) advances, the mechanical arm (12) and the reinforcing hoop (10) are connected into a whole, a filling pipeline (5) is dragged to advance forwards, after recovery is finished, a fixed support arm (122) is withdrawn along with the heading machine (1), the pin (13) supported by the fixed support arm gradually falls off, finally the hinged support arm (121) is separated from the reinforcing hoop (10), and the filling pipeline (5) is left in place.
6. The mining process of the open-pit end slope coal-pressing filling mining system according to claim 4, wherein the full-roadway automatic monitoring process is as follows:
when the roadway is not filled, no cemented filling material exists in the monitoring pipeline (8), the two electrodes are not conducted, the two-position three-way electromagnetic valve (16) is in a normal state, namely the filling pump (7) is connected with the filling pipeline (5) to fill the roadway;
after the roadway is filled, the monitoring pipeline (8) is filled with cemented filling materials, the two electrodes are conducted, the two-position three-way electromagnetic valve (16) is in an electrically excited state, namely the filling pump (7) is connected with the wastewater pool (9), the cemented filling materials in the two-position three-way electromagnetic valve are introduced into the wastewater pool (9), and the roadway filling is finished.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246912.XA CN109882240B (en) | 2019-03-29 | 2019-03-29 | Open-air end slope coal-pressing filling mining system |
| PCT/CN2019/109879 WO2020199546A1 (en) | 2019-03-29 | 2019-10-08 | Pressed coal filling mining system and process for end slope of open pit |
| AU2019439785A AU2019439785B2 (en) | 2019-03-29 | 2019-10-08 | Pressed coal filling mining system and process for end slope of open pit |
| RU2020136147A RU2756537C1 (en) | 2019-03-29 | 2019-10-08 | System for development of cemented coal and process of open mining on a longitudinal slope |
| ZA2020/06726A ZA202006726B (en) | 2019-03-29 | 2020-10-28 | Pressed coal filling mining system and process for end slope of open pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246912.XA CN109882240B (en) | 2019-03-29 | 2019-03-29 | Open-air end slope coal-pressing filling mining system |
Publications (2)
| Publication Number | Publication Date |
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| CN109882240A CN109882240A (en) | 2019-06-14 |
| CN109882240B true CN109882240B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910246912.XA Active CN109882240B (en) | 2019-03-29 | 2019-03-29 | Open-air end slope coal-pressing filling mining system |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN109882240B (en) |
| AU (1) | AU2019439785B2 (en) |
| RU (1) | RU2756537C1 (en) |
| WO (1) | WO2020199546A1 (en) |
| ZA (1) | ZA202006726B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882240B (en) * | 2019-03-29 | 2020-04-14 | 中国矿业大学 | Open-air end slope coal-pressing filling mining system |
| CN110284883A (en) * | 2019-07-08 | 2019-09-27 | 中国矿业大学 | Recovery method is filled by a kind of row of adopting, open coal mine end side |
| CN111075505B (en) * | 2019-12-17 | 2021-03-16 | 天地科技股份有限公司 | Coal mine fully-mechanized coal mining face segmented filling mining method |
| CN111236943B (en) * | 2020-02-27 | 2021-06-08 | 中煤能源研究院有限责任公司 | Mining method for advancing, cutting and retreating filling of open-air end slope |
| CN111364998B (en) * | 2020-03-12 | 2021-05-25 | 中煤能源研究院有限责任公司 | Single-side edge filling and tunneling mining method for open-pit mine end slope coal pressing |
| CN111396055B (en) * | 2020-03-24 | 2021-03-30 | 中煤科工集团沈阳设计研究院有限公司 | Method for arranging side coal pressing mining chamber of strip mine |
| CN112855162B (en) * | 2021-01-29 | 2023-03-21 | 辽宁工程技术大学 | Mining method for upper coal seam of composite coal seam strip mine near extraction end slope |
| CN112963618B (en) * | 2021-05-19 | 2021-08-06 | 中煤科工能源科技发展有限公司 | Method and device for long-distance laying and continuous filling of filling pipeline of side coal mining cave |
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| CN207676227U (en) * | 2017-12-28 | 2018-07-31 | 甘肃大漠紫光生物科技有限公司 | A kind of cistern water auto-regulation system |
| CN108825299A (en) * | 2018-05-30 | 2018-11-16 | 贵州锦丰矿业有限公司 | A kind of movable type filling pipeline device and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020199546A1 (en) | 2020-10-08 |
| AU2019439785B2 (en) | 2021-09-16 |
| CN109882240A (en) | 2019-06-14 |
| RU2756537C1 (en) | 2021-10-01 |
| AU2019439785A1 (en) | 2020-11-19 |
| ZA202006726B (en) | 2021-09-29 |
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