1Analysis and optimization of factors influencing the frozen depth of shaft lining in deep water-rich weakly cemented surrounding rockZHOU Aiping, TAN Jie, QIAO Wenjun, WANG Peng, DONG JunliangDesign Technology1-72Reasonable top coal drawing rounds in horizontal section top-coal caving mining of Wudong Coal MineZHANG Chunlei, WAN Xiaohang, ZHANG Jinwang, WEI WeijieDesign Technology8-163Mining plan for the western steep slope of Hongshaquan Open-pit Coal MineXU Chen, MA Long, MA Ning, MA LiDesign Technology17-244Comparison on wind load calculation for closed belt conveyor corridor in Chinese,American and European codesJIANG Tianyang, ZHAO Jinyang, SONG BoDesign Technology25-295Rainwater regulation and storage method of coal mine industrial site based on SWMM modelLI BiaoDesign Technology30-356Design method for zoning support of overlying inclined coal pillar roadway based on unstable strata thicknessCAO Haigang, CHEN Cong, LI Lifeng, LI Qihang, LI WeiConstruction Technology45-557Comprehensive geophysical exploration technology for floor water-bearing body of isolated working faceSHI Zhihong, JIANG PengConstruction Technology56-638Application of milling and fishing string technology for pneumatic directional drilling in broken soft coal seamYANG Weifeng, FANG Jun, LIU Fei, LIU Jianlin, SHAO Guojie, CHU ZhiweiConstruction Technology64-699Safety evaluation of floor failure of Group A coal slice mining in Pan'er Coal Mine,Huainan mining areaHUANG Gang, REN Bo, HAN Yunchun, YU Guofeng, WANG ChuangProduction Technology70-7610Disturbance of high-level gas extraction roadway configuration on coal spontaneous combustionCHEN Liang, YU Hongyang, BI Xiongfei, XU Zhenwei, WANG Dongwei, QIN Ruichen, GUO LeiProduction Technology77-8411Analysis of CO sources and the control measures for CO overrun in fully mechanized mining face of shallow contiguous coal seamsLI Chaoyue, ZHOU Chunshan, ZHANG Yulong, QI JinlongProduction Technology85-9112Experimental study on efficient flotation separation process of difficult-to-float coking coal slimeCHEN Hui, HE Jingyi, ZHANG Rui, LIU Wenli, LI Furen, ZHUO Qiming, LIANG Shihao, TANG Chenjie, ZHANG Zhenghui, WANG YunProduction Technology92-9813Purification effect of dissolved pollutants in mine water treatment and the improvement measuresSHI Yuanteng, ZHU Lei, BING Zhe, XIANG Yi, LI Ruihua, WANG WendongProduction Technology99-10614Dip angle effect of stress transfer path in floor of longwall stope in steeply pitching coal seamZHU KaipengResearch and Discussion107-11615Fracture evolution law and similarity simulation analysis of overburden movement in long-distance lower protective seam miningGAO Zhongguo, YANG Junpeng, XIN Yajun, LI Guangzeng, CAO Jianbo, ZHANG Dongying, FANG Yudong, GONG JiaweiResearch and Discussion117-12416Effect of mining speed on rock burst when working face crossing fault tectonic regimeGUO WeiResearch and Discussion125-13117Anchoring performance of bolts in coal-rock composite anchored bodies under various influencing factorsZHAO Fanghao, GAO Lin, ZHAO Shuang, TANG Shixian, GAO Changsi, MO FeilongResearch and Discussion132-13918Fault diagnosis method for gear transmission system based on vibration signal analysisLIU Xiaojun, REN WenqingResearch and Discussion140-14719Fault diagnosis of hoist braking system based on improved TransformerWANG Kaixuan, ZHANG HongweiResearch and Discussion148-15520Prediction method of formation drillability based on drilling process data drivingCHEN Tao, ZHANG Youzhen, ZHONG ZichengResearch and Discussion156-162