Title:
DESIGN METHOD FOR MINE WITHOUT LEAVING COAL PILLAR AND WITHOUT ROADWAY TUNNELING
Document Type and Number:
WIPO Patent Application WO/2021/003771
Kind Code:
A1
Abstract:
A design method for a mine without leaving coal pillars and without roadway tunneling, comprising the following steps: forming a main shaft (1) and an auxiliary shaft (2) from the ground to a coal seam; developing a first connecting roadway (31) and a second connecting roadway (32) in the coal seam, the first connecting roadway (31) being communicated with the main shaft (1), and the second connecting roadway (32) being communicated with the auxiliary shaft (2); communicating the first connecting roadway (31) with the second connecting roadway (32), and using the part where the first connecting roadway (31) is communicated with the second connecting roadway (32) as a first cut (4); and using the direction, starting from the first cut (4), away from a line connecting the main shaft (1) and the auxiliary shaft (2) as a first direction, and cutting a coal wall by means of a coal winning machine in the first direction for mining.
Inventors:
HE MANCHAO (CN)
WANG YAJUN (CN)
YANG JUN (CN)
WANG YAJUN (CN)
YANG JUN (CN)
Application Number:
PCT/CN2019/097065
Publication Date:
January 14, 2021
Filing Date:
July 22, 2019
Export Citation:
Assignee:
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY ENV SCIENCE ACADEMY (CN)
International Classes:
E21C41/18; E21D9/14
Foreign References:
| CN105240013A | 2016-01-13 | |||
| CN109779686A | 2019-05-21 | |||
| CN104405437A | 2015-03-11 | |||
| EP2801697A1 | 2014-11-12 |
Other References:
See also references of EP 3998395A4
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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