Title:
METHOD FOR MONITORING PRE-BACKFILLING ROOF SUBSIDENCE FOR USE IN FULLY MECHANIZED SOLID-BACKFILLING COAL MINING
Document Type and Number:
WIPO Patent Application WO/2017/092577
Kind Code:
A1
Abstract:
Disclosed is a method for monitoring pre-backfilling roof subsidence for use in solid-backfilling coal mining, suitable for monitoring the amount of pre-backfilling subsidence of a roof on a working surface during a fully mechanized, underground solid-backfilling coal mining process. The method comprises employing Pro/Engineer to create a solid simulation model on the basis of the dimensional parameters of each of the structures of a hydraulic support for backfilling coal mining (7) and the geometrical relationships therebetween, and according to a change in inclination angle of a rear column (3) of the hydraulic support for backfilling coal mining (7) which is obtained by monitoring a backfilling coal mining cycle operation, finally obtaining the amount of pre-backfilling subsidence of the roof on the working surface of fully mechanized solid-backfilling coal mining.
Inventors:
ZHANG QIANG (CN)
ZHANG JIXIONG (CN)
MEI XIANCHENG (CN)
SUN QIANG (CN)
ZHANG JIXIONG (CN)
MEI XIANCHENG (CN)
SUN QIANG (CN)
Application Number:
PCT/CN2016/106334
Publication Date:
June 08, 2017
Filing Date:
November 18, 2016
Export Citation:
Assignee:
UNIV CHINA MINING & TECH (CN)
International Classes:
G01C5/00
Foreign References:
| CN105466390A | 2016-04-06 | |||
| CN103590846A | 2014-02-19 | |||
| CN102011588A | 2011-04-13 | |||
| CN101372891A | 2009-02-25 | |||
| CN102704974A | 2012-10-03 | |||
| US4440448A | 1984-04-03 | |||
| US4603910A | 1986-08-05 | |||
| US4222612A | 1980-09-16 |
Attorney, Agent or Firm:
NANJING RUI HONG PATENT AND TRADEMARK OFFICE LLP (CN)
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