1Parameters design and engineering application of directional blasting for roof cutting pressure relief of waterproof coal pillarWANG YongfaDesign Technology1-92Strip filling mining technology under complex geological conditions with multi-faultsGAO Peng, DU Chaojie, SHI Teng, SHAO Xiaoping, ZHAO Bingchao, LI Longqing, DUAN MinganDesign Technology10-163Optimization of hydraulic jet perforation tools for horizontal wells in broken soft and low permeability coal seamsZHANG Yongcheng, ZHAO Zhiyou, WANG Qi, WEN Xianli, LIU Liangliang, LI Dehui, ZHANG Wei, WANG Xuchao, LI DadongDesign Technology17-234Flow prediction of underground water supply network integrating multi-modal characteristicsZHAO Anxin, LIU Ding, GUO Shilin, ZHAN Shifa, CHEN ZhigangDesign Technology24-305Research on closed shell envelope voxel modeling of open-pit coal mine based on ternary DEMJIN Lei, TIAN Yu, LI Xinpeng, DU Yongzhi, LIU Jixiang, ZHANG Wenhui, FU EnsanDesign Technology31-386Evaluation method for structural stability of large diameter air shaft engineering constructed by raise boring machineYANG Mulin, CHENG Shouye, SONG Yaxin, GAO Feng, WANG Yongfeng, GU QuntaoConstruction Technology39-447Surrounding rock control technology with synergetic support and pressure relief for gob-side entry driving in extra-thick coal seamLI Huamin, WANG Wenqiang, WANG Zuguang, SUN HaoConstruction Technology45-518Deformation and failure mechanism of large cross-section semi coal rock roadway and control technologyXI Yimiao, CHENG Lixing, ZHANG Dongxin, WANG Zhanling, SHI MengConstruction Technology52-589Application of active advance support technology with anchor cable in entries of Bulianta Coal MineYANG Juncai, FAN Donglin, CHEN Sushe, LIU Zhaoxiang, WANG Qingxiong, LI Jingang, CUI LijunConstruction Technology59-6510Process optimization and support performance analysis based on a new temporary support deviceWANG Yunzhu, CHENG Yunhai, WANG Guandong, SU Chang, LI Fenghui, XU Wentao, MA MengxiangConstruction Technology66-7111Mine pressure behavior law of large mining height fully mechanized caving face in near shallow seam under multi-layer thick and hard roofLIU Xiaogang, ZHANG Zhen, LIU QianjinProduction Technology72-8012Hydraulic reaming technology for anti-burst and pressure relief of isolated coal pillar in extra-thick coal seamDUAN Jinhong, QIN Zihan, JIN Jiancheng, SHAO Changxiong, GAO Jianxun, LI Yongyuan, ZHANG Hao, WANG Dalong, LI GaozhengProduction Technology81-8613Difference of water abundance and water inflow of the first mining face in deep coal seams of Mongolia-Shaanxi mining areaMA Guofeng, LIU Yang, YANG Jian, WANG QiangminProduction Technology87-9114Application of electrical intelligent monitoring technology for water-conducting channel in coal faceHUANG Gang, YU Guofeng, HAN Yunchun, LUO Yong, REN Bo, ZHAO Jing, XU Yifan, GAO Yingui, HE ShifangProduction Technology92-9815Experimental study on slurry flow characteristics of goaf filling area with floor drag pipe between supportsCHENG Yunhai, WANG Xudong, SHEN Hao, HUANG GuoxuProduction Technology99-10416Pressure relief mechanism and support technology of immediate roof cutting gob-side entry retainingSUN Lihui, JI Quancai, WANG Zhonghai, ZHANG Haiyang, WANG Zongze, HE Yong, FAN Yu, YANG JianghuaResearch and Discussion105-11317Stress evolution law of single and double roadway roof blasting in working faceMU Zonglong, ZHANG Zehui, ZHANG Xiufeng, GAI Yuan, ZHUANG Jiaxin, SHI Maoning, DONG XiaoyongResearch and Discussion114-12118Monitoring and evaluation of hydraulic fracturing prevention and control technology for hard roof disaster in coal mineSHI Yao, LEI Han, YANG Xinlu, XU ShidaResearch and Discussion122-13019Technology and application of directional hydraulic fracturing with guide slot to enhance permeability and gas extraction in coal seamREN ZhongjiuResearch and Discussion131-13720Load prediction method of scraper conveyor based on rough RBF neural networkGUO Gang, WANG Haitao, GAO Xiaocheng, YAN Shangbin, HUANG XiaojunResearch and Discussion138-145 