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Title:
ANCHOR BOLTING METHOD FOR ENHANCING ROOF STABILITY USING REINFORCED ROOF AND SIDE OF COAL ROADWAY
Document Type and Number:
WIPO Patent Application WO/2019/109700
Kind Code:
A1
Abstract:
An anchor bolting method for enhancing roof stability using reinforced roof and sides of a coal roadway comprises: dividing a roof (2) of a roadway (1) into different regions; analyzing rock core information of the respective regions to obtain information about rock mass intactness of the respective regions of the roof (2); and determining, by means of analyzing test results of the respective regions, rock mass quality indices for the respective regions of the roof (2), wherein if the rock mass quality index of one region of the roof (2) is greater than a preset value, a plurality of anchors or anchor cables are uniformly and vertically arranged within said region to specifically enhance supporting performance, and a plurality of anchor bolts are uniformly and vertically arranged within regions corresponding to two sides (3) of the coal roadway.

Inventors:
ZHANG NONG (CN)
XIE ZHENGZHENG (CN)
WU YEWEI (CN)
HAN CHANGLIANG (CN)
YAO WENHAO (CN)
Application Number:
CN2018/105350
Publication Date:
June 13, 2019
Filing Date:
September 13, 2018
Export Citation:
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Assignee:
UNIV CHINA MINING (CN)
International Classes:
E21D20/00; G01N3/08; G01N33/24
Domestic Patent References:
WO2016161480A12016-10-13
Foreign References:
CN108035752A2018-05-15
CN107067333A2017-08-18
CN106570292A2017-04-19
CN103225510A2013-07-31
CN106780284A2017-05-31
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (CN)
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