1Plastic design for deep frozen wall considering shaft-flank displacement convergenceZHANG Bo, JIANG Cheng, LI DongweiDesign Technology1-72Optimal design of the second level main pump house in the east area of Guqiao Coal MineWU Xiaodong, LI XiangDesign Technology8-113Numerical simulation of coal pillar mining in replacement strips under monopoly ridge terrain in GuizhouGAO Fangling, LIU Ping, JIA Yichao, CHEN Zhen, LUO Chang, HUANG XinkangDesign Technology12-184Top coal weakening in extra-thick hard coal seam using hydraulic fracturing with alternated drilling of deep and shallow holesKANG XiaofengDesign Technology19-245Structure design of main shaft tower of Hulusu Coal MineLIU XianwangDesign Technology25-296Relocation of semi-fixed crushing station in open-pit coal mineYAO Yong, WANG Liang, ZHAO Mei-ling, LIU Guang-weiDesign Technology30-357Dense drilling pressure relief in irregular district pillar along faultSUN Yanbin, SONG Houwu, PENG XiangfengConstruction Technology36-408Loss characteristics of bolt pre-tightening force and surrounding rock control mechanism in coal roadwayYU Zhizhuo, SUN Xin, LIU KechenConstruction Technology41-469Compound support technology of roadway in soft and broken coal seam in fully mechanized top coal caving faceZHU Yuezhang, HUANG Beihai, DING KeConstruction Technology47-5110Regional advance treatment technology of Ordovician limestone water for using directional drilling and grouting in Qipanjing Coal MineLIU Zhongquan, ZHANG Baoyou, GUO YonghongConstruction Technology52-5711Drilling deviation mechanism and application of comprehensive deviation correction technologyDUAN LihongConstruction Technology58-6212Monitoring and analysis of roof movement law during initial mining of fully mechanized face with large mining heightJIN Feng, LI Yan, YANG Guoqiang, WANG Binchang, WANG Yuanjie, CHEN FabingProduction Technology63-6713Hydraulic fracturing technology of hard roof roadway in Fujiawa Coal MineZHANG Peng, GONG Zhongpin, HE Lifeng, SHAN Dongliang, LIU Fang, XUE Xuhui, LI Xiaotian, SUN Liang, WANG ChunlaiProduction Technology68-7214Segmented hydraulic punching technology of bedding borehole in Dongxing Coal MineZHANG Kaijia, NI XingProduction Technology73-7715Drilling technology of CBM horizontal wells through coal pillar lower coal group in Sihe minefieldSU Shanbo, ZHANG Peihe, LI Lin, JIANG Wenping, WANG ZhengxiProduction Technology78-8316Application of Mine Harmony operating system in fully mechanized coal mining faceZHANG Guoen, YAN Chaochao, WANG YiyingProduction Technology84-8817Automatic plan preparation method under parallel advance mining and stripping model for open-pit mineXIAO Bing, CHEN Xin, BI Lin, XU Qian, XIE LingchenProduction Technology89-9318Pressure relief effect and stope stress distribution characteristics of the entry retained by roof cuttingZHANG Lei, LI Weidong, WANG Yilong, LI Yongyuan, YANG YangResearch and Discussion94-9919Co-movement pattern of rock support for mining at high-cutting working faceDENG Guangzhe, WANG KangqiangResearch and Discussion100-10620Evolution law of floor failure depth caused by deep miningWU Peiyi, YI Sihai, CAI Xiangjun, WANG YunResearch and Discussion107-112 