CN115506838A - Method for treating closed gas accumulation by using negative pressure method - Google Patents
Method for treating closed gas accumulation by using negative pressure method Download PDFInfo
- Publication number
- CN115506838A CN115506838A CN202211203428.7A CN202211203428A CN115506838A CN 115506838 A CN115506838 A CN 115506838A CN 202211203428 A CN202211203428 A CN 202211203428A CN 115506838 A CN115506838 A CN 115506838A
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- gas
- pipeline
- negative pressure
- inlet pipe
- water supply
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000009825 accumulation Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000012806 monitoring device Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000009423 ventilation Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000004880 explosion Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 8
- 238000005422 blasting Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for treating closed gas accumulation by using a negative pressure method, which comprises the following steps: firstly, building a sealing wall at an outlet of a gas gushing lane, and horizontally burying and pressing an air inlet pipe and an exhaust pipe on the sealing wall; secondly, arranging a first gate and a pipeline multi-parameter monitoring device on the outlet end of the exhaust pipe; thirdly, plugging the air inlet pipe; and fourthly, when the seal needs to be unsealed, opening the first gate, removing the plugging of the gas inlet pipe, working a gas pump, sucking the gas in the gas emission lane by negative pressure generated in the air supply pipeline or the water supply pipeline, enabling the gas to enter the exhaust pipe through the air supply pipeline or the water supply pipeline, and discharging the gas through the main drainage pipeline, meanwhile, monitoring the gas condition in real time by the pipeline multi-parameter monitoring device, when the gas is displayed to be reduced to the range below 1%, arranging a gas inspector to check the gas through the gas inlet pipe, after the gas is confirmed to be correct, and after the sealing wall is removed by mechanical dismantling or blasting, recovering ventilation by using a local ventilator and a wind barrel, and not discharging the gas.
Description
Technical Field
The invention relates to the technical field of coal mining equipment, in particular to a method for treating closed gas accumulation by using a negative pressure method.
Background
The gas suffocates people, burns, the explosion is one of the major disasters that puzzles coal mine safety production always, the one-end tunnel that has gas to gush out in the pit of colliery need resume the ventilation after stopping wind for a long time, need unseal airtight before resuming the ventilation, and the airtight gas that gathers of pretreatment of unsealing belongs to the major risk, traditional treatment airtight inner accumulated gas technology of gathering is that professional rescue personnel (for example mine rescue personnel) utilize the copper hammer, copper borer manual work (every class needs 7 people, three class's operation) breaks airtight (generally for brick-concrete structure), break airtight back, utilize extrusion formula local ventilation blower cooperation flexible dryer to break the gas that gathers in the emission tunnel gradually, the coal mine discharges and gathers gas at present and mainly has two kinds of methods: (1) an intelligent gas discharging device discharging method, and (2) a manual wind limiting discharging method. The intelligent gas exhauster has high cost, high technical requirement, low reliability of manual wind limiting method, and the over-limit of gas is established in the technical level and responsibility of the exhauster. Therefore, it is necessary to develop an intrinsically safe gas treatment method with low cost and low technical requirement. And how to simply, safely and efficiently solve the gas accumulated in the closed container becomes a technical problem in the industry.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for treating closed gas accumulation by using a negative pressure method.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the method for treating the closed gas accumulation by using the negative pressure method comprises the following steps of:
step one, building a sealing wall at an outlet of a gas emission roadway, and horizontally burying and pressing an air inlet pipe and an exhaust pipe on the sealing wall;
secondly, a first gate and a pipeline multi-parameter monitoring device are arranged at the outlet end of the exhaust pipe and are communicated with a main drainage pipeline for mine, a gas pump is arranged on the main drainage pipeline, the inlet end of the exhaust pipe is connected with an air supply or water supply pipeline arranged in a gas emission roadway, wherein the pipelineMulti-parameter monitoring device for detecting CO and CO in gas 2 And CH 4 Content (c);
thirdly, plugging the air inlet pipe;
and fourthly, when the seal needs to be unsealed, opening the first gate, removing the plugging of the gas inlet pipe, working a gas pump, sucking the gas in the gas emission lane by negative pressure generated in the air supply pipeline or the water supply pipeline, enabling the gas to enter the exhaust pipe through the air supply pipeline or the water supply pipeline, and discharging the gas through the main drainage pipeline, meanwhile, monitoring the gas condition in real time by the pipeline multi-parameter monitoring device, when the gas is displayed to be reduced to the range below 1%, arranging a gas inspector to check the gas through the gas inlet pipe, after the gas is confirmed to be correct, and after the sealing wall is removed by mechanical dismantling or blasting, recovering ventilation by using a local ventilator and a wind barrel, and not discharging the gas.
And in the second step, a second gate is arranged on the air supply or water supply pipeline every 50m and is kept in a fully open state.
In the second step, the diameter of the air supply or water supply pipeline is more than 50 mm.
Wherein the diameter of the second gate is 25mm.
The invention has the beneficial effects that: the process for treating the gas accumulated in the closed container by using the negative pressure method converts the traditional positive pressure discharged gas into the negative pressure treated gas, is simple, convenient and efficient, completely eliminates the major risk brought by the traditional gas discharge method, and avoids the gas accidents caused by gas discharge. The invention directly reduces manpower and material resources (only 4 people are needed), the needed material is basically obtained from local materials, the cost is low, and the operation flow of gas emission is simplified (no rescue team is called).
The invention solves the serious risk of gas emission by a process method of treating closed accumulated gas by a negative pressure method, and simplifies the process method into recovery ventilation.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the method for treating the closed gas accumulation by using the negative pressure method comprises the following steps:
firstly, building a sealing wall 2 at the outlet of a gas gushing lane 14, and horizontally burying and pressing an air inlet pipe 9 and an exhaust pipe 6 on the sealing wall 2;
secondly, arranging a first gate 8 and a pipeline multi-parameter monitoring device 7 at the outlet end of the exhaust pipe 6, and communicating with a main drainage pipeline 10 for mining, arranging a gas pump 12 on the main drainage pipeline 10, and connecting the inlet end of the exhaust pipe 6 with an air supply or water supply pipeline 4 arranged in a gas gushing lane 14, wherein the pipeline multi-parameter monitoring device 7 is used for detecting CO and CO in gas 2 And CH 4 Content (c);
thirdly, plugging the air inlet pipe 9;
fourthly, when the seal needs to be opened and the seal is closed, the first gate 8 is opened, the plugging of the gas inlet pipe 9 is removed, the gas pump 12 works, the gas 3 in the gas emission lane 14 is sucked by negative pressure generated in the air supply or water supply pipeline 4, the gas 3 enters the exhaust pipe 6 through the air supply or water supply pipeline 4 and is discharged through the main drainage pipeline 10, meanwhile, the gas condition is monitored in real time by the pipeline multi-parameter monitoring device 7, when the gas is displayed to be reduced to below 1%, the first gate 8 is closed, the waiting time is 30min, a gas inspector is arranged to inspect the gas 3 through the gas inlet pipe 9, the pressure, the flow and the CH on the pipeline multi-parameter monitoring device are recorded every hour every class, and the CH is recorded every hour 4 Concentration, CO 2 After the concentration is confirmed to be correct, the sealing wall 2 is removed by mechanical removal or blasting, the ventilation is restored by the local ventilator 13 and the air drum 11, no gas is discharged, fresh air enters the gas emission lane 14, and return air is discharged through the return air system 1.
In the second step, a second gate 5 is arranged on the air supply or water supply pipeline 4 every 50m, and the second gates 5 are all kept in a fully opened state.
In the second step, the diameter of the air supply or water supply pipeline 4 is more than 50 mm.
Wherein the diameter of the second gate 5 is 25mm.
Wherein, the air inlet pipe 9 and the air outlet pipe 6 are made of 200mmPE pipe, the main pumping and discharging pipeline 10 is made of 400mmPE pipe, and the air supply or water supply pipeline 4 is made of 108mm steel pipe.
It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.
Claims (4)
1. The method for treating the closed gas accumulation by using the negative pressure method is characterized by comprising the following steps of:
firstly, building a sealing wall (2) at an outlet of a gas emission roadway (14), and horizontally burying and pressing an air inlet pipe (9) and an exhaust pipe (6) on the sealing wall (2);
secondly, a first gate (8) and a pipeline multi-parameter monitoring device (7) are arranged at the outlet end of the exhaust pipe (6) and communicated with a main drainage pipeline (10) used in mines, a gas pump (12) is arranged on the main drainage pipeline (10), the inlet end of the exhaust pipe (6) is connected with an air supply or water supply pipeline (4) arranged in a gas emission lane (14), wherein the pipeline multi-parameter monitoring device (7) is used for detecting CO and CO in gas 2 And CH 4 Content (c);
thirdly, plugging the air inlet pipe (9);
and fourthly, when the seal needs to be unsealed, a first gate (8) is opened, the plugging of an air inlet pipe (9) is removed, a gas pump (12) works, negative pressure generated in an air supply or water supply pipeline (4) sucks gas (3) in a gas emission lane (14), the gas (3) enters an exhaust pipe (6) through the air supply or water supply pipeline (4) and is exhausted through a main drainage pipeline (10), meanwhile, a pipeline multi-parameter monitoring device (7) monitors the gas condition in real time, when the gas is displayed to be reduced to be below 1%, a gas inspector is arranged to check the gas through the air inlet pipe (9), after the gas is confirmed to be correct, the sealing wall (2) is detached by mechanical detachment or explosion, the ventilation is recovered by a local ventilator (13) and an air cylinder (11), and the gas is not discharged.
2. The method for processing the closed gas accumulation by using the negative pressure method as claimed in claim 1, wherein in the second step, a second gate (5) is arranged on the air supply or water supply pipeline (4) every 50m, and the second gates (5) are all kept in a fully opened state.
3. The method for processing the airtight gas accumulation by utilizing the negative pressure method as claimed in claim 1 or 2, wherein in the second step, the diameter of the air supply or water supply pipeline (4) is more than 50 mm.
4. The process for the treatment of confined gas accumulation using the underpressure method according to claim 2, characterized in that the diameter of the second gate (5) is 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211203428.7A CN115506838A (en) | 2022-09-29 | 2022-09-29 | Method for treating closed gas accumulation by using negative pressure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211203428.7A CN115506838A (en) | 2022-09-29 | 2022-09-29 | Method for treating closed gas accumulation by using negative pressure method |
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| Publication Number | Publication Date |
|---|---|
| CN115506838A true CN115506838A (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211203428.7A Pending CN115506838A (en) | 2022-09-29 | 2022-09-29 | Method for treating closed gas accumulation by using negative pressure method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116717304A (en) * | 2023-05-31 | 2023-09-08 | 中煤科工集团重庆研究院有限公司 | Quick unsealing method based on liquid nitrogen filling after fire extinguishment of gas mine |
-
2022
- 2022-09-29 CN CN202211203428.7A patent/CN115506838A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116717304A (en) * | 2023-05-31 | 2023-09-08 | 中煤科工集团重庆研究院有限公司 | Quick unsealing method based on liquid nitrogen filling after fire extinguishment of gas mine |
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