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Changan Zhang, Jianlei Gao, Zhengzhong Wang and Chang Liu
More complex geological conditions could be encountered with the construction of urban subway projects. At present, many subway tunnels have been built in composite strata with upper soft and lower hard layers, but the presence of a cavity in the strata ...
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Longyong Shu
This study aimed to examine gas extraction technology in the goaf of an L-shaped borehole in the mining fissure zone of a short-distance coal seam group. The numerical simulation method was used to analyze the failure law of overlying rock during mining,...
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Quanhui Liu, Chenyao Zhou, Dan Ma, Yong Liu, Guanshi Wang and Zhen Huang
The accurate prediction of the vertical extent of water-conducting fracture (WCF) zones in weakly cemented strata is particularly significant in preventing and controlling water hazards in western coal mines. The evolution of fractures in weakly cemented...
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Tao Qin, Binyang Duan, Yanwei Duan, Yaozu Ni, Xiangang Hou, Pingyun Ma and Yue Yang
After coal mining enters the deep, the mining environment changes dramatically, and engineering disasters become increasingly prominent, which are mostly related to rock instability and failure. As traditional support is difficult to meet production need...
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Hao Yang, Kai Bian, Tieji Wang, Zidong Jin, Bo Liu, Hui Sun and Junbin Chang
In order to effectively prevent and control the problem of water inrush from the through-type fault floor, based on the analysis of the case data of water inrush from the fault structure in the Fengfeng mining area, the types of karst water inrush from t...
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Tao Yang, Jiayue Deng, Bing Peng, Jie Zhang, Yiming Zhang and Yihui Yan
China is rich in coal resources under water bodies. However, the safety prediction of high-intensity mining under water bodies has long been one of the problems encountered by the coal industry. It is of great significance to realize safe mining under wa...
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Gustavo Santana Barbosa, Gustavo Gonçalves Garcia, Rui Paulo Bento Pena dos Reis, Antônio Jorge Vasconcellos Garcia and Gabriel de Alemar Barberes
The present article exhibits the achieved results based on the evaluation of two petroleum systems, which compares reservoirs of fluvial environments of sedimentary basins located in the south and north Atlantic, in Brazil (Recôncavo Basin) and in Portug...
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Ulaankhuu Batsaikhan, Hiroto Hashikawa, Hideki Shimada, Takashi Sasaoka and Akihiro Hamanaka
The typical reinforcements and supports used in the main gate of underground coal mining (particularly in the weak to very weak rock strata), such as rock/cable bolts, steel sets, and grouting materials, often allow the mine to remain serviceable in the ...
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Zhijie Sun, Xuanyu Yang, Shuai Lu, Yang Chen and Pengfei Li
By combining model testing and numerical simulation, this paper focuses on the influence of landslides on tunnels in loess-bedrock strata by using the perfect landslide?tunnel system (LTS). A mechanical test and simulation (MTS) system was used to provid...
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T. Pradeep, Abidhan Bardhan, Avijit Burman and Pijush Samui
The majority of natural ground vibrations are caused by the release of strain energy accumulated in the rock strata. The strain reacts to the formation of crack patterns and rock stratum failure. Rock strain prediction is one of the significant works for...
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