Title:
TUNNELING-FREE AND COAL PILLAR-FREE MINING AND CONSTRUCTION METHOD WHEREIN COAL MINE FIELD IS NOT DIVIDED INTO MINING AREAS
Document Type and Number:
WIPO Patent Application WO/2021/031561
Kind Code:
A1
Abstract:
A tunneling-free and coal pillar-free mining and construction method wherein a coal mine field is not divided into mining areas. An upper main tunnel (1) and a lower main tunnel (2) are respectively arranged at upper and lower parts of a field, and a central air inlet inclined tunnel (15) is obliquely arranged at a central part. A first workface cutting hole (5) is arranged at the lower side of the upper main tunnel of a field boundary, a first workface (6) is arranged along the moving direction, and downward inclined mining is performed along the incline direction. The first workface is pushed downward to a lower boundary then moved to a cutting hole of an adjacent replacement workface, to perform upward inclined mining to an upper boundary, and then moved again to a cutting hole of a next adjacent replacement workface, thereby moving up and down to perform cyclical pushing and mining. The method shortens the shaft depth, reduces the shaft construction period, and saves initial investment.
Inventors:
MA QIHUA (CN)
QIN ZHONGCHENG (CN)
FAN KEGONG (CN)
NING JIANGUO (CN)
GUO ZHONGPING (CN)
WEN ZHIJIE (CN)
QIN ZHONGCHENG (CN)
FAN KEGONG (CN)
NING JIANGUO (CN)
GUO ZHONGPING (CN)
WEN ZHIJIE (CN)
Application Number:
PCT/CN2020/080949
Publication Date:
February 25, 2021
Filing Date:
March 24, 2020
Export Citation:
Assignee:
UNIV SHANDONG SCIENCE & TECH (CN)
International Classes:
E21C41/18
Foreign References:
| CN110700831A | 2020-01-17 | |||
| CN107882565A | 2018-04-06 | |||
| CN107725053A | 2018-02-23 | |||
| CN106121646A | 2016-11-16 | |||
| CN110130899A | 2019-08-16 | |||
| CN108361034A | 2018-08-03 | |||
| CN104775819A | 2015-07-15 | |||
| US20020005660A1 | 2002-01-17 |
Attorney, Agent or Firm:
JINAN JINDI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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