Title:
ROADWAY FORMING METHOD BY ROADWAY WIDENING AND TUNNELING AND FILLING GANGUE PASTE IN THICK COAL SEAM
Document Type and Number:
WIPO Patent Application WO/2019/140813
Kind Code:
A1
Abstract:
A roadway forming method by roadway widening and tunneling and filling a gangue paste in a thick coal seam, comprising: firstly designing the width of a packwall (2) and the width of a new roadway to be tunneled (1) according to the geological condition of a coal seam; secondly, determining the length of each filling, i.e. a cyclic filling pace, according to the existing tunneling technology conditions of the mine; when the new roadway to be tunneled (1) is tunneled, supporting a top plate (10), a bottom plate (11) and a roadway inner wall (9) by a strengthened rock bolt and a bolt-mesh-anchor; then, after the new roadway to be tunneled (1) has been tunneled for a cyclic filling pace, performing roadway expanding and tunneling along a roadway outer wall (8); when the roadway expanding and tunneling is performed, temporarily supporting the packwall (2) and a boundary between the packwall and the new roadway to be tunneled (1) by cooperating a hydraulic column (3) with a metal articulated top beam (4); finally, after the roadway expanding and tunneling is completed, removing the temporary support, and filling the packwall (2); thereafter, alternately performing said steps in order.
Inventors:
GUO ZHONGPING (CN)
LIU WEIZHEN (CN)
JIAN YONG (CN)
DUAN HUIQIANG (CN)
YANG HENGZE (CN)
XIE WENWU (CN)
LIU WEIZHEN (CN)
JIAN YONG (CN)
DUAN HUIQIANG (CN)
YANG HENGZE (CN)
XIE WENWU (CN)
Application Number:
PCT/CN2018/086556
Publication Date:
July 25, 2019
Filing Date:
May 11, 2018
Export Citation:
Assignee:
UNIV SHANDONG SCIENCE & TECH (CN)
International Classes:
E21F15/00; E21C41/16
Foreign References:
CN102943674A | 2013-02-27 | |||
CN103147793A | 2013-06-12 | |||
CN105422172A | 2016-03-23 | |||
EP0257652A1 | 1988-03-02 | |||
CN107387083A | 2017-11-24 | |||
CN104453944A | 2015-03-25 |
Attorney, Agent or Firm:
QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)
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