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Zhe Xiang, Nong Zhang, Zhengzheng Xie and Chenghao Zhang
To study the damage and destruction behavior of small coal pillars in coal mine roadway driving along gobs under long-term in-situ stress and multiple engineering disturbances, an unconfined compression experiment under a discontinuous cyclic load was de...
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Zhengzheng Xie, Nong Zhang, Jin Wang, Zhe Xiang and Chenghao Zhang
With the characteristics of gradual instability in the supporting pressure area of roadway as the engineering background, this paper aims to explore the evolution law of pore and fracture in the coal sample under progressive loads. The low-field nuclear ...
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Qun Wei, Nong Zhang, Xiaowei Feng, Zhengzheng Xie, Jiansheng Wu and Juncai Cao
The influence of a polypropylene fiber on the tensile properties of a cement-polymer based thin spray-on liner (TSL) was investigated in this study. Two different contents of fiber were added to the liner, yielding two TSL groups. Tensile tests were perf...
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Dongjiang Pan, Nong Zhang, Changliang Han, Sen Yang, Chenghao Zhang and Zhengzheng Xie
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Deyu Qian, Nong Zhang, Dongjiang Pan, Zhengzheng Xie, Hideki Shimada, Yang Wang, Chenghao Zhang and Nianchao Zhang
The stability of underground openings is pivotal to sustainable safe mining in underground coal mines. To determine the stability and tunneling safety issues in 800-m-deep underground openings through large fault zones in argillaceous rocks in the Guqiao...
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