Title:
METHOD FOR CONTROLLING STABILITY OF SURROUNDING ROCK APPLICABLE TO MINING REGION MAIN ROADWAY OF COAL MINE
Document Type and Number:
WIPO Patent Application WO/2020/216114
Kind Code:
A1
Abstract:
A method for controlling the stability of surrounding rock applicable to a mining region main roadway of a coal mine. The method comprises the following steps: providing a reinforcing support at a roof and two sides of a mining region main roadway in addition to existing supports; providing a safe roadway along a mining stopping line of a current working face required by the design of a coal mine, providing a support for the safe roadway, and forming a protective coal pillar between the safe roadway and the mining region main roadway; forming, in the safe roadway, a slot in the roof for blasting, arranging blast holes at a roadway corner line at one side of the current working face, and forming a pre-splitting slot; and after extraction of the current working face advances to the safe roadway, that is, after coal mining of the working face is completed, performing extraction on a subsequent working face. Roof cutting and stress release are performed at the mining stopping line of the working face, thereby reducing the impact of mining disturbances on the stability of the mining region main roadway during extraction of the working face, improving, by means of a reinforcing support, the yielding and deformation capabilities of the mining region main roadway, and further improving the stability of the surrounding rock of the mining region main roadway.
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Inventors:
WANG JIONG (CN)
YU GUANGYUAN (CN)
JIANG JIAN (CN)
YU GUANGYUAN (CN)
JIANG JIAN (CN)
Application Number:
PCT/CN2020/084944
Publication Date:
October 29, 2020
Filing Date:
April 15, 2020
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
E21D9/14
Foreign References:
| CN110145326A | 2019-08-20 | |||
| CN107956475A | 2018-04-24 | |||
| CN106437712A | 2017-02-22 | |||
| CN103244180A | 2013-08-14 | |||
| CN104763425A | 2015-07-08 | |||
| RU2284414C1 | 2006-09-27 |
Attorney, Agent or Firm:
BEIJING HARTEND INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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