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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 Rong, Kai Zhong, He Huang, Chuanzhang Li, Chaolan Zhang and Xinyu Nong
Tobacco (Nicotiana tabacum L.) is a crop that is able to accumulate metals. In this study, humic acid was selected as a Cd, Cu, Pb, and Zn passivator, and added to calcareous field soil in amounts of 6.4, 10.3, and 14.8 kg·ha-1. Its impact on the soil fr...
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Chao Liu, Xiangyun Nong, Fengjian Zhang, Zonggang Quan and Guoliang Bai
This paper aims to manufacture recycled concrete hollow block (RCHB) which can be used for the masonry structure with seismic requirements. Five RCHB masonry walls were tested under cyclic loading to evaluate the effect of the axial compression stress, a...
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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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Sen Yang, Nong Zhang, Xiaowei Feng and Jiaguang Kan
Time-dependent deformation of coal is a major concern for deep coal mining. When experiencing high stress conditions, the enhanced time-dependent deformation of coal will become a very possible factor to trigger the violent failure of underground opening...
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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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Xiaowei Feng, Nong Zhang, Xiaoting Chen, Lianyuan Gong, Chuangxin Lv and Yu Guo
The particular ?rich coal, meager oil, and deficient gas? energy structure of China determines its high degree of dependence on coal resources. After over 100 years of high-intensity mining activities in Northeast China, East Region, and the Southern Reg...
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Barbara Vezzoni, Fabrizio Gabrielli, Andrei Rineiski, Marco Marchetti, Xue-Nong Chen, Michael Flad, Werner Maschek, Claudia Matzerath Boccaccini and Dalin Zhang
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