Patents
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- Wang Liang , Xiaodong Pei,Minxuan Liu,Hao Wang,Qingquan Liu,Minghao Yi,Siwen Zheng,Zibin Zhu,A coal body deformation testing device, testing system, and testing method
- Hongxing Zhou,Rong Zhang,Yuanping Cheng,Qingquan Liu,Hao Dai,A method of extracting gas by hydraulic fracturing with cross-measure boreholes
- Haifeng Wang , Yuanping Cheng,Jianzhong Sun,Wei Wang,Hongxing Zhou,Qingquan Liu,A regional approach to increase the permeability of coal seams with high gas content and low inherent permeability
- Hongyong Liu , Yuanping Cheng,Hongxing Zhou,Qingwei Zhai,Shengli Kong,Qingquan Liu,Method of gas drainage in cross-measure borehole-influenced area of a roadway
- Yuanping Cheng , Hongyong Liu,Wang Liang,Liguo Wang,Haidong Chen,Qingquan Liu,Gas drainage method with wells for underground mining
- Kaizhong Zhang , Congmeng Hao,Yuanping Cheng,Hongyong Liu,Rong Zhang,Qingquan Liu,A device and method for measuring the hole diameter of hydraulic punching hole in the underground coal seam
- Qingquan Liu , Jingjing Liu,Biao Lv,Haoxue An,Yuanping Cheng,Peng Chu,Yanfei Lu,Coal seam gas parameter detection method and device based on dead space pressure conversion
- Qingquan Liu , Wenyi Huang,Liang Wang,Yuanping Cheng,Jing Wang,Hao Ling,Hao Wang,Determination method of methane adsorption time of coal based on diffusion-seepage decoupling experiments
- Qingquan Liu , Zhenyang Wang,Fei Wang,Minghao Yi,Yuanping Cheng,Congmeng Hao,Biao Hu,Zhaonan Jiang,Chenghao Wang,Deyang Wang,Yang Lei,Xinxin He,Tianwei Ren,Wei Li,Hailiang Wang,Shoujie Wu,Lei Nie,A invention relates to a method and device for rapidly determining coal seam gas parameters in an underground coal mine
- Qingquan Liu , Yuanping Cheng,Liang Wang,Congmeng Hao,Zhaonan Jiang,Chenghao Wang,A invention relates to an automatic coal seam permeability testing device and method