Title:
STOPING METHOD FOR OXYGEN-FREE WORKING SURFACE OF HIGHLY GASEOUS MINE
Document Type and Number:
WIPO Patent Application WO/2018/099261
Kind Code:
A1
Abstract:
A stoping method for an oxygen-free working surface of a highly gaseous mine, comprising: aiming at a first coal seam of the highly gaseous mine which is not disturbed and a working surface (1) of which roof fissure of the coal seam is not communicated with the ground; providing flexible closed walls (6) respectively in an air inlet gateroad (2) and a transporting gateroad (3); providing a nitrogen production system (7) and an air conditioning unit (8) respectively on the flexible closed walls (6) of corresponding gateroads to form an oxygen-free working environment; providing a gas and temperature monitoring and controlling system (9) in a stoping space to monitor the content and the temperature of gas in real time; when the oxygen concentration in the stoping space is lower than 5%, starting a stoping operation, moving the flexible closed walls (6) along with the advancing of the working surface (1), and continuing the stoping to a stoping stop line; when the oxygen concentration reaches or exceeds 8%, switching off a power supply automatically, and stopping the production operation; and when the temperature in the stoping space exceeds 26 °C, executing a strong cooling measure to reduce the temperature of the working environment to 15-20 °C. Said stoping method effectively prevents gas accidents, realizes safe mining on the working surface, and is easy to operate and implement.
Inventors:
JI MING (CN)
GUO HONGJUN (CN)
CHEN KAI (CN)
ZHANG YIDONG (CN)
CHENG LIANG (CN)
ZHANG MINGLEI (CN)
ZHANG ZONGLIANG (CN)
GUO WENHAO (CN)
ZHAO YONGPING (CN)
ZHOU CHANGGUO (CN)
GUO HONGJUN (CN)
CHEN KAI (CN)
ZHANG YIDONG (CN)
CHENG LIANG (CN)
ZHANG MINGLEI (CN)
ZHANG ZONGLIANG (CN)
GUO WENHAO (CN)
ZHAO YONGPING (CN)
ZHOU CHANGGUO (CN)
Application Number:
PCT/CN2017/110669
Publication Date:
June 07, 2018
Filing Date:
November 13, 2017
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
E21C41/18; E21F5/00; E21F17/107
Foreign References:
| CN106761747A | 2017-05-31 | |||
| CN102061918A | 2011-05-18 | |||
| CN102287216A | 2011-12-21 | |||
| CN104047628A | 2014-09-17 | |||
| CN2881102Y | 2007-03-21 | |||
| SU1535993A1 | 1990-01-15 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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