Evolutionary Laws and Preventative Measures for the Coal and Rock Dynamic Disasters Around the Boreholes During Coal Bed Methane Extraction in Low-Temperature Oxidation Conditions: A Case Study of the No. $$8_{2}$$ 8 2 Reservoir of the Yangliu Coal Mine

2017 ◽  
Vol 43 (7) ◽  
pp. 3647-3657 ◽  
Author(s):  
Wancheng Zheng ◽  
Shengqiang Yang ◽  
Zongqing Tang ◽  
Qin Xu
Energies ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 174 ◽  
Author(s):  
Gang Wang ◽  
Yue Wang ◽  
Lulu Sun ◽  
Xiang Song ◽  
Qiqi Liu ◽  
...  

2017 ◽  
Vol 49 ◽  
pp. 536-544 ◽  
Author(s):  
Guorui Feng ◽  
Yuguo Wu ◽  
Chao Zhang ◽  
Shengyong Hu ◽  
He Shao ◽  
...  

2021 ◽  
pp. 111727
Author(s):  
Wanxiong Liao ◽  
Shiqing Kang ◽  
Zhaohan Chu ◽  
Zhongkai Liu ◽  
Yiru Wang ◽  
...  

2016 ◽  
Vol 9 (1) ◽  
pp. 289-298 ◽  
Author(s):  
Zhu Likai ◽  
Ji Youjun ◽  
Yang Tianhong ◽  
Li Xiaoyu

Based on the mechanism of migration of the coal bed methane (CBM), and taking into account the deformation of the coal rock during the process of CBM production was also taken into account, a coupled mathematical model considering the interaction of solid and fluid for methane extraction was built. The coal gas extraction of JINcheng coal mine was taken as an example, some typical coal sample was chosen to test the permeability under different confining pressure. The curve for permeability of coal rock versus effective stress under different confining pressure was obtained, a numerical model considering the variation of permeability for methane extraction was set up. The influence of deformation of coal rock on the gas production was simulated and analyzed. The simulation results indicate that the productivity curve considering deformation of rock is closer to the actual production data, at the initial stage of production, the gas rate is less than the case without considering deformation of rock, but the time of stable yield will last longer, and this matches the actual methane extraction, therefore, we recommend that the deformation of coal seam should be considered during the prediction of methane production for JINcheng coal mine.


Fuel ◽  
2018 ◽  
Vol 234 ◽  
pp. 732-737 ◽  
Author(s):  
Shuang Song ◽  
Botao Qin ◽  
Haihui Xin ◽  
Xiaowen Qin ◽  
Kai Chen

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