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FAILURE CHARACTERISTICS OF W STRAP IN COAL MINE SUPPORT  ( SCI-EXPANDED收录)   被引量:2

文献类型:期刊文献

英文题名:FAILURE CHARACTERISTICS OF W STRAP IN COAL MINE SUPPORT

作者:Feng, Xiaowei[1];Xue, F. E., I[2];Feng, Xiaotian[3];Zhao, Tongyang[2]

机构:[1]China Univ Min & Technol, Beijing, Peoples R China;[2]Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing, Peoples R China;[3]Xian Univ Architecture & Technol, Politecn Milano, Milan, Italy

年份:2022

卷号:67

期号:2

起止页码:289

外文期刊名:ARCHIVES OF MINING SCIENCES

收录:SCI-EXPANDED(收录号:WOS:000834778700005)、、Scopus(收录号:2-s2.0-85135153746)、WOS

基金:The authors would like to acknowledge the financial support for this study from the National Natural Science Foundation of China (Grant Nos. 51804296 and 52104094), the Zhejiang Provincial Natural Science Foundation of China (Grant No. LQ20E080006) and the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (Grant No. ZJRMG-2019-03).

语种:英文

外文关键词:W strap; field observation; laboratory tests; coal mine support; failure characteristics

外文摘要:W strap is a crucial surface support component for underground coal mine roadways. In this study, the failure characteristics of the W strap in the field are discussed, and the loading characteristics of the strap and the faceplate are numerically and experimentally analysed. Afterwards, a loading apparatus capable of reappearing the loading environment of the strap in the field is fabricated. This loading device, combined support systems consisting of a bolt, faceplate and strap is tested under different simulated strata conditions. Failure patterns of the strap are evaluated by the 3D scanning method, and proper selection of a faceplate is explored. Results indicate that a domed faceplate can achieve a favourable supporting effect on strata, and thus it is favoured compared with a square domed faceplate. In addition, rock cavity and rock integrity beneath the strap are essential factors determining the servicing life of the overall supporting system.

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