Title:
BEDDING BOREHOLE-BASED GAS EXTRACTION METHOD CAPABLE OF AVOIDING AIR LEAKAGE
Document Type and Number:
WIPO Patent Application WO/2019/105161
Kind Code:
A1
Abstract:
A bedding borehole-based gas extraction method capable of avoiding air leakage, comprising two stages, i.e., building a main gas extraction system and building an auxiliary gas extraction system: firstly, a main gas extraction pipeline (9) is laid inside a roadway (11), bedding extraction boreholes are constructed, the bedding extraction boreholes are sealed, and borehole-based gas extraction pipes are connected to the main gas extraction pipeline to perform gas extraction; and after all the boreholes in the roadway are sealed for extraction, an airtight wall is constructed at an opening of the roadway where the boreholes are constructed, an auxiliary gas extraction pipeline (10) is laid, and the auxiliary gas extraction pipeline (10) is connected to an auxiliary gas pump extraction pipeline to perform auxiliary extraction. The method can effectively resolve the problem of serious air leakage in a bedding borehole-based extraction process, has a simple process, is easy to implement, and can reduce labor costs.
Inventors:
LIN BAIQUAN (CN)
LIU HUIHUI (CN)
YANG WEI (CN)
LIU HUIHUI (CN)
YANG WEI (CN)
Application Number:
PCT/CN2018/112290
Publication Date:
June 06, 2019
Filing Date:
October 29, 2018
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
XUZHOU BOAN SCIENCE & TECH DEVELOPMENT CO LTD (CN)
XUZHOU BOAN SCIENCE & TECH DEVELOPMENT CO LTD (CN)
International Classes:
E21F7/00
Foreign References:
| CN108104865A | 2018-06-01 | |||
| CN102943687A | 2013-02-27 | |||
| CN104481588A | 2015-04-01 | |||
| CN202900144U | 2013-04-24 | |||
| DE2618787A1 | 1977-11-10 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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