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Title:
ROADWAY-TYPE CEMENTING FILLING METHOD FOR NEARLY-HORIZONTAL COAL SEAM
Document Type and Number:
WIPO Patent Application WO/2019/174188
Kind Code:
A1
Abstract:
Disclosed is a roadway-type cementing filling method for a nearly-horizontal coal seam, the method comprising the following steps: a filling roadway (3) is formed after the nearly-horizontal coal seam is mined by using roadway mining technology, filling pipeline holes (7) are dug in a top plate of the filling roadway (3), and filling pipes (8) are arranged in the filling pipeline holes (7); the filling roadway (3) is divided into multiple filling sealing spaces between the ends of the filling roadway (3) and internal construction sealing retaining walls (4); a top chamber (9) is dug at the top plate in the middle of each filling sealing space and is in communication with the filling pipeline holes (7); vent pipes (10) are arranged along the top plate of the filling roadway (3); and the filling roadway (3) is filled by using cementing filling technology, the three adjacent filling roadways (3) are taken as one group, and each filling sealing space in the three filling roadways (3) are successively filled to achieve dense top filling until the cementing filling operation of the whole group of filling roadways (3) is completed. The method is applied to the cementing filling mining of the nearly-horizontal coal seam and has advantages such as a small colloidal filling body top filling distance and a high density, and has wide application prospects.

Inventors:
ZHOU, Nan (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
YAN, Hao (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
LIU, Hengfeng (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
ZHANG, Sheng (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
LI, Meng (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
Application Number:
CN2018/102418
Publication Date:
September 19, 2019
Filing Date:
August 27, 2018
Export Citation:
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Assignee:
CHINA UNIVERSITY OF MINING AND TECHNOLOGY (Science Academy of China University of Mining and Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
International Classes:
E21F15/00
Foreign References:
CN108468564A2018-08-31
CN103046955A2013-04-17
CN106050300A2016-10-26
CN103527200A2014-01-22
CN104532818A2015-04-22
US4463807A1984-08-07
SU756043A11980-08-15
FR2573475B11987-10-16
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (Room 1912, Longtaiguoji Mansion No.198, East Zhongshan Street, Baixia Distric, Nanjing Jiangsu 5, 210005, CN)
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