1Optimization study on drawing technique of longwall top-coal caving in extra-thick coal seam based on BBR systemWANG Jia-chen, CHEN Yi, ZHANG Jin-wang1-42Mining scheme design for extremely thick coal seam of Zhundong No 2 coal mine in East Junggar coalfieldSUN Xiao-dong, MA Zhao-rui, HU Yun-fei5-73Selection and characteristics of development mode of Guojiahe coal mineZHANG Zhong-wen, JIA Cheng-gang8-104Design of floor haulage roadway applied as gas drainage roadway in coal and gas outburst mineSHEN Long11-135System design of mine cable personnel carrier in Yuwu south ventilation shaftNIE Yang14-166Discussion on structure design method of coal mine steel headframeGAO Jin-suo, LI xing-po17-197Key points for electrical design of disaster-resistance drainage systemWANG Yu, SHI Da-xin, LIU Hai-qing20-218Process design of coal storage and transportation equipment for Shenhua Ningmei indirect coal liquefaction projectLIU Han-gang22-249Simulation optimization of open-pit mining with different cut widths based on SIMIOLI Xin-wang, LV Hua-yong, LI Li, GUAN Tian-qiang25-2810Process design of coking coal preparation in power coal preparation plantWU Xin-cai, YUAN Zhong-ming, LI Xue-ping29-3111Calculation of ecological water demand in environmental impact assessment of overall coal mining area planningLIU Wen-rong32-3412Application of rock burst control technology of open-off cut in deep tunneling roadwayWU Long-quan, DU Jian-peng, GUO Guang-hui, KONG Ling-hai35-3813Fuzzy random analysis of vertical shaft freezing pressure in deep alluviumYAO Ya-feng, CHENG Hua, RONG Chuan-xin, YAO Zhi-shu, SONG Jian39-4214Study on mechanism and control technology of floor heave in soft rock roadway with large sectionDENG Bo-tuan, SU San-qing, REN Jian-xi, MENG Chang43-4615Rationality study on support intensity of roadside wall in gob-side entry retainingLIN Dong-cai, ZHAO Yi-xian, LUAN Heng-jie, CHEN Ze-yu47-4916Application of full length anchoring technology in deep soft rock roadwayWANG Wei, YANG Zhang-jie, WANG Fu-hai, WANG Qing-niu, CHEN Kang, LIU Ling-sheng50-5217Divisional slip-form construction technology for silo group projectWANG Ben-meng53-5518Design on parameter monitoring system of tunnel drilling rig based on CoDeSysZHAO Liang, YIN Xin-sheng, WENG Yin-sheng56-5819Height determination of water conducting fractured zone in backfill mining with paste-like materialZHANG Feng-yan59-6120Research on characteristics of dust production and prevention technology in cutting coalZOU Chang-fu62-64 