1Study on the mechanism of secondary vertical compression failure caused by water and sand inrush during shaft boring through thick alluvium and thin bedrockCHENG Hua, ZHANG Liang-liang, YAO Zhi-shu, WANG Xiao-jianExpert Forum1-72Research on cooperation strategy of clean coal development and utilization along "the Belt and Road"WU Lin, WANG Lei, ZHU Ji-mao, LI Rui-fengDesign Technology8-123Determination of mine hydrogeological type and gas levels in feasibility study reportWANG He-deDesign Technology13-164Optimization research and practice of related parameters of over-the-roadway extraction working face above a subinclined shaftREN Xing-yun, HAO Bing-yuanDesign Technology17-205Application of BIM technology in mining and drifting design of Zhangjiamao Coal MineZHANG Long-zheng, LI Zheng-hu, LIU Jian-haoDesign Technology21-246Design and construction practice of mining district coal bin in Shunhe Coal MineZHU Shou-song, ZHOU Qiong-yang, DU Hou-yong, AN Chun-mingDesign Technology25-287A new method for multi-seam coal quality analysisin coal preparation engineering designGUO Da-lin, WANG Yang, WEI Zhong-kuan, WU Peng-feiDesign Technology29-338Study on application of flip-flow screen in coal preparation plant in ChinaYU Chi, WANG Xin-wen, GONG San-peng, ZHAO Guo-feng, LIN Dong-dong, XU Ning-ningDesign Technology34-389Design and research on tube truss structure's support mode under different constraintsMENG Wen-qing, SHEN Zhao-wei, ZHANG Ya-pengDesign Technology39-4310Water disaster prevention and control technology for roadway excavating under the water-abundance and weak cementation aquiferZHAO Bao-feng, MA Lian-jing, WANG Qing-hu, CAO Hai-dong, LI Pan-panConstruction Technology44-4811Application of mine high-strength anchor cable bundle in soft rock roadway of repeated over-the-roadway extractionSUN Hui, CHEN Chen, MA Zhen-qian, SHI SiConstruction Technology49-5312Study on reinforcement support parameters of under-goaf lower roadway in very close distance coal seamsGUO Meng, GONG Pei-lin, LI PengConstruction Technology54-5813Anchorage structure and the application of small aperture pre-stressed tensile dispersion anchor cable for mineYANG Yong-gang, LI Yan-qingConstruction Technology59-6314Rockburst risk analysis and prevention practice basedon vibrati on wave CT detectionCHENG Gang, LIANG Kai-shan, XIN Chong-wei, SUN Wei, HAN Liang, ZHANG Jian, ZHANG Li-mingProduction Technology64-6915Classification of rock burst risk zone of steeply inclined and extremely thick coal seam based on microseismic monitoringLIU Xu-dong, ZHANG Yu-liang, TIAN Xiang-huiProduction Technology70-7416Influence of floor dinting on the stability of roadway side walls and roofCHEN PanProduction Technology75-7917Research and application of intrinsically safe black light camera in mineWANG Huai-qin, ZHANG De-shengProduction Technology80-8418Application of dual fuel generator unit in goaf coalbed methane wellsWANG Zheng, LI Chao, LI Yang, ZHOU Xian-jun, BI Li-liProduction Technology85-8819Prediction of gas emission based on principal component-stepwise regression analysisSUN Jian-hua, ZHANG Zhi-li, SHI Qian, ZHAO Yang, WEI Chun-rongResearch and Discussion89-9420Experimental study on gas extraction effect with different borehole spacingPENG Shou-jian, LI Zheng-yi, XU Jiang, ZHANG Hong-rui, HU Chen-yang, ZHANG Lin-chao, GUO Shi-chaoResearch and Discussion95-99 