WO2022183843A1 - Trou de charbon d'extraction de gaz d'une mine à cycle d'égalisation de pression - Google Patents

Trou de charbon d'extraction de gaz d'une mine à cycle d'égalisation de pression Download PDF

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Publication number
WO2022183843A1
WO2022183843A1 PCT/CN2022/070253 CN2022070253W WO2022183843A1 WO 2022183843 A1 WO2022183843 A1 WO 2022183843A1 CN 2022070253 W CN2022070253 W CN 2022070253W WO 2022183843 A1 WO2022183843 A1 WO 2022183843A1
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WO
WIPO (PCT)
Prior art keywords
gas
coal
pressure
pipe
hole
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PCT/CN2022/070253
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English (en)
Chinese (zh)
Inventor
柴兆喜
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柴兆喜
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Application filed by 柴兆喜 filed Critical 柴兆喜
Publication of WO2022183843A1 publication Critical patent/WO2022183843A1/fr

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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
    • 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

Definitions

  • the present invention relates to mine gas drainage, which belongs to mining technology.
  • the purpose of the pressure-equalizing circulation mine gas drainage coal hole of the invention is to block the air in the ventilation coal lane from being drawn into the gas drainage coal hole, so that the mine gas drainage can produce pure gas.
  • the ventilation coal road in the coal seam of the mine, the drilling coal road perpendicular to it, the safety airtight wall, the safety coal road, the isobaric airtight wall, the isobaric coal road, and the gas drainage coal holes are connected in sequence.
  • the gas pipe inserted into the coal hole for gas extraction, the mine gas extraction pipeline that flows and transports pure gas in the ventilation coal lane, and the gas extraction vacuum pump on the ground are connected in sequence, and the gap between the gas pipe and the wall of the coal hole is filled with fillers to seal the gas extraction.
  • the mine gas extraction pipe, the connecting pipe, the blower, the main gas injection pipe, and the gas injection pipe inserted into the pneumatic coal lane are connected in sequence.
  • Safety sealing wall, safety coal road, iso-pressure sealing wall, gas drainage coal hole, gas pipe gas injection pipe, and replacement pipe constitute the pressure equalizing circulation mine gas drainage coal hole.
  • the gas pipe is provided with an in-pipe gas flowmeter and a gas concentration meter.
  • the gas in the coal seam is pumped into the gas extraction coal hole, and the air in the gas pressure coal roadway also flows through the leakage cracks in the coal seam, and is pumped into the gas drainage coal hole at the leakage flow rate.
  • the air is mixed with the gas and flows into the gas pipe. From the readings of the flow meter and gas concentration meter, the gas flow can be calculated. The gas flow is subtracted from the flow meter reading to obtain the leakage flow.
  • the gas injection pipe is provided with an electromagnetic valve and a gas flow meter in the pipe.
  • the flow rate of the solenoid valve on the gas replacement pipe and gas injection pipe is set as the leakage gas flow rate. Close the gas pipe, open the gas injection pipe and the gas replacement pipe at the same time, and the air in the iso-pneumatic coal lane is pumped out by the gas replacement pipe at the leakage flow rate. , so that the gas of the isogas pressure coal roadway through the leakage cracks such as gas drainage coal holes is pure gas.
  • the gas volume in the isobaric coal lane remains unchanged, and the gas pressure is kept equal to the air pressure in the ventilation coal lane, and there is no gas exchange between the coal lanes on both sides of the isobaric airtight wall.
  • the differential pressure gauge in the coal lane of the drilling site for measuring the difference between the air pressure in the ventilation coal lane and the air pressure in the isobaric coal lane, and the differential pressure gauge is connected to the electromagnetic valve on the gas injection pipe.
  • the gas concentration meter on the gas replacement pipe indicates that there is no air in the pipe, close the gas replacement pipe, open the gas pipe, and the gas extraction coal hole will officially produce pure gas.
  • the gas in the gas pressure coal roadway, along the leakage cracks, gas extraction coal holes, gas pipes, mine gas extraction pipes, connecting pipes, blowers, main gas injection pipes, gas gas injection pipes, and gas pressure coal roadways circulates at the leakage flow rate.
  • the electromagnetic valve on the gas injection pipe automatically increases the gas flow, otherwise reduces the gas flow, keeping the air pressure in the coal roadway on both sides of the isobaric airtight wall equal. , No gas exchange.
  • the flow meter on the gas injection pipe is equal to the number of the flow meter on the gas pipe, close the gas pipe and the gas injection pipe to end the extraction.
  • the isogas pressure coal roadway connects the coal holes in the surrounding coal seam with fan-shaped holes, and the coal holes connect the fissures in the coal seam.
  • the gas in the isogas pressure coal roadway is necessary to prevent the gas in the isogas pressure coal roadway from leaking into the ventilation coal roadway.
  • a gas probe in the safety coal lane which is connected to the gas sound and light alarm in the coal lane of the drilling site.
  • the air pressure in the isobaric coal roadway is higher than the air pressure in the ventilation coal roadway, the gas in it flows into the safe coal roadway. That is, an alarm is issued, and the personnel adjust the electromagnetic valve on the gas injection pipe to reduce the gas injection flow.
  • the gas probe is connected to the electromagnetic valve on the gas injection pipe, and the gas injection flow is reduced when gas occurs in the safety coal road.
  • the gas concentration meter on the gas pipe shows that when the gas concentration drops, the personnel adjust the electromagnetic valve on the gas injection pipe to increase the gas injection flow rate.
  • a technology can also be added to implement an oxygen probe in the gas pipe. The electromagnetic valve on the gas injection pipe When there is oxygen in the extraction tile pipe, increase the gas injection flow rate.
  • a water-filled U-shaped glass tube for measuring the air pressure difference in the coal roadway of the drilling site, and one end of the glass tube is connected to a conduit inserted into the isobaric coal roadway.
  • the personnel observed the liquid level of the water column in the two pipes of the U-shaped pipe, adjusted the electromagnetic valve on the gas injection pipe to increase or decrease the gas injection flow, and kept the liquid level of the two pipes at the same height.
  • Ventilation coal alleys Supported by shotcrete walls. The ends and the two walls of the airtight coal alley are covered with shotcrete.
  • the mine gas extraction pipeline, auxiliary mine gas extraction pipeline, and main gas injection pipeline are the same length as the ventilation coal roadway.
  • An iso-gas pressure coal roadway connects multiple gas extraction coal holes in the coal seam, and the gap between the gas pipe inserted into each coal hole and the hole wall is filled with filler.
  • FIG. 1 is the mine ventilation coal road
  • 2 is the drilling coal road
  • 3 is the gas drainage coal hole
  • 4 is the gas pipe
  • 5 is the filling
  • 6 is the mine gas drainage pipeline.
  • reference numerals 1 to 6 are the same as the reference numerals in FIG. 1 .
  • 7 is the connecting pipe
  • 8 is the blower
  • 9 is the main gas injection pipe
  • 10 is the gas injection pipe
  • 11 is the auxiliary mine gas extraction pipe
  • 12 is the gas replacement pipe
  • 13 is the gas flow arrow
  • 14 is the safety Confined wall
  • 15 is the safety coal road
  • 16 is the isobaric airtight wall
  • 17 is the isobaric coal road
  • 18 is the electromagnetic valve
  • 19 is the gas flow meter in the pipe
  • 20 is the gas concentration meter in the pipe
  • 21 is the gas leakage crack
  • 22 is the gas alarm

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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)
  • Air Transport Of Granular Materials (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pipe Accessories (AREA)

Abstract

Un trou de charbon d'extraction de gaz d'une mine à cycle d'égalisation de pression est divulgué. Un tunnel de charbon de ventilation de mine (1) est relié de manière séquentielle à un tunnel de charbon de site de forage (2), une paroi d'étanchéité de sécurité (14), un tunnel de charbon de sécurité (15), une paroi d'étanchéité à pression de gaz équivalente (16) et au trou de charbon d'extraction de gaz ; un tuyau de gaz (4) inséré dans le trou de charbon d'extraction de gaz (3), une conduite d'extraction de gaz de mine (6) pour l'écoulement et le transfert de gaz pur dans le tunnel de charbon de ventilation, et une pompe à vide d'extraction de gaz sur le sol sont séquentiellement reliées l'une à l'autre ; la conduite d'extraction de gaz de mine (6) dans le tunnel de charbon de ventilation est reliée de manière séquentielle à une conduite de raccordement (7), une soufflante (8), une conduite d'injection de gaz principale (9), et une conduite d'injection de gaz (10) insérée dans un tunnel de charbon à pression de gaz équivalente ; le gaz est extrait hors de la conduite d'extraction de gaz de mine au moyen de la soufflante (8) et est injecté dans le tunnel de charbon à pression de gaz équivalente (17) ; et une électrovanne sur un tuyau d'injection de gaz règle et commande automatiquement l'écoulement d'injection de gaz pour maintenir la pression de gaz dans le tunnel de charbon à pression de gaz équivalente pour être égale à la pression de gaz dans le tunnel de charbon de ventilation. Le trou de charbon d'extraction de gaz est approprié pour diverses veines de charbon, et peut atteindre les objectifs d'un trou de charbon d'extraction de gaz dans une mine à cycle d'égalisation de pression.
PCT/CN2022/070253 2021-03-01 2022-01-05 Trou de charbon d'extraction de gaz d'une mine à cycle d'égalisation de pression WO2022183843A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110222570.5A CN113217079B (zh) 2021-03-01 2021-03-01 均压循环矿井瓦斯抽采煤孔
CN202110222570.5 2021-03-01

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WO2022183843A1 true WO2022183843A1 (fr) 2022-09-09

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CN (1) CN113217079B (fr)
WO (1) WO2022183843A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115573764A (zh) * 2022-11-23 2023-01-06 中国矿业大学(北京) 超声波二次冲击下压抽一体化的瓦斯提浓装置及提浓方法
CN117345173A (zh) * 2023-11-22 2024-01-05 中国矿业大学(北京) 一种高抽巷瓦斯分段抽采方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113217079B (zh) * 2021-03-01 2023-07-14 柴兆喜 均压循环矿井瓦斯抽采煤孔

Citations (5)

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US20150247385A1 (en) * 2012-09-21 2015-09-03 ENN Coal Gasification Mining Co., Ltd. Method for joint-mining of coalbed gas and coal
US20160145979A1 (en) * 2013-07-03 2016-05-26 Shengli Oilfield Longdi Petroleum Technology (Equipment) Co., Ltd. Method for Extracting Coalbed Gas through Water and Coal Dust Drainage and a Device Thereof
CN110273664A (zh) * 2018-03-14 2019-09-24 柴乔森 带循环瓦斯抽采泵的煤层所含瓦斯开采装置
CN111472832A (zh) * 2020-04-09 2020-07-31 中国矿业大学 一种煤层瓦斯自循环注气增产方法
CN113217079A (zh) * 2021-03-01 2021-08-06 柴兆喜 均压循环矿井瓦斯抽采煤孔

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GB279189A (en) * 1926-08-05 1927-10-27 Arthur Ernest Moore Improvements in or relating to signalling apparatus used in mines, shafts and like places
CN102943687B (zh) * 2012-12-03 2014-08-20 中国矿业大学 一种瓦斯抽采钻孔的均压封孔方法
CN107420126B (zh) * 2017-07-26 2024-03-29 柴兆喜 均压循环矿井瓦斯抽采系统
CN110273710A (zh) * 2018-03-14 2019-09-24 柴兆喜 矿井内的巷道瓦斯库
CN109252884B (zh) * 2018-09-13 2020-01-07 辽宁工程技术大学 一种沿空留巷工作面y型通风调压防灾方法
CN111734488A (zh) * 2020-05-14 2020-10-02 淮北矿业股份有限公司 一种采空区封闭墙调压气室

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150247385A1 (en) * 2012-09-21 2015-09-03 ENN Coal Gasification Mining Co., Ltd. Method for joint-mining of coalbed gas and coal
US20160145979A1 (en) * 2013-07-03 2016-05-26 Shengli Oilfield Longdi Petroleum Technology (Equipment) Co., Ltd. Method for Extracting Coalbed Gas through Water and Coal Dust Drainage and a Device Thereof
CN110273664A (zh) * 2018-03-14 2019-09-24 柴乔森 带循环瓦斯抽采泵的煤层所含瓦斯开采装置
CN111472832A (zh) * 2020-04-09 2020-07-31 中国矿业大学 一种煤层瓦斯自循环注气增产方法
CN113217079A (zh) * 2021-03-01 2021-08-06 柴兆喜 均压循环矿井瓦斯抽采煤孔

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115573764A (zh) * 2022-11-23 2023-01-06 中国矿业大学(北京) 超声波二次冲击下压抽一体化的瓦斯提浓装置及提浓方法
CN117345173A (zh) * 2023-11-22 2024-01-05 中国矿业大学(北京) 一种高抽巷瓦斯分段抽采方法
CN117345173B (zh) * 2023-11-22 2024-05-10 中国矿业大学(北京) 一种高抽巷瓦斯分段抽采方法

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