1Safety of fully mechanized caving mining in extra-thick seam under surface and aquifers watersLI Lei, LI De-junDesign Technology1-62Roadway layout optimization in fully mechanized top coal caving face in Baode Coal MineSUN Bing-xingDesign Technology7-123Treatment of underground and ground gangue in Shendong mining areaGAO Deng-yun, LI Rui-qunDesign Technology13-164Design method of intelligent dry separation system in coal mineSHEN Bin-xue, ZHU Lei, GU Wen-zhe, SONG Tian-qi, LIU Zhi-chengDesign Technology17-225Design of automatic control system for accurate coal falling in coal bunker based on continuous coal level detectionZHAO Ya-kun, WANG Ran-feng, FU XiangDesign Technology23-276Monitoring system of coal conveying in large coal storage siloLIU Zhe, MA Yan-yan, ZHAO Yan-bo, SHAO Jian-lin, YIN Li-hui, DENG Xu, ZHANG KaiDesign Technology28-347Structural parameter optimization and instability risk assessment of dump slopeWANG ShengDesign Technology35-398Application of concrete filled steel tube for roadway support under dynamic pressure in Nanguan Coal MineHAO Zhi-jun, WANG Xi-lin, HE Xiao-sheng, SHAN Ren-liangConstruction Technology40-449Deformation control of main roadway using roof hydraulic fracturing in Guqiao Coal MineZHANG Rui, CAI Qing-wang, HUANG Bing-xiang, CHEN Shu-liang, JIN FengConstruction Technology45-5010Supporting technology of large-section top coal roadwaySUN Xiao-yan, HE Yong-liang, ZHANG Zhi-congConstruction Technology51-5611Surrounding rock control technology for dynamic pressure roadway in deep inclined coal seamLI Min-zu, ZHAO Li-anConstruction Technology57-6212Key technologies of directional drilling construction for gas extraction and pressure relief in protective layer miningWANG Qing, JIN XinConstruction Technology63-6713Effect of ground grouting on overlying weathered zone of working faceYU Yan, WANG Chuan-bing, XU Yan-fei, YUAN Ben-qingConstruction Technology68-7314Foundation grouting treatment of backfill area in surface-underground combined mining areaCHEN Qing-tong, MU Yi, CHEN KaiConstruction Technology74-7915Application of directional hydraulic fracturing and pressure relief technology for roof suspending at the working face endSU BoProduction Technology80-8416Prevention and control of rock burst in open-off cut tunnelling under the influence of coal pillarLI Shao-liang, ZHANG Lei, ZHANG YiProduction Technology85-8917Reasonable arrangement of high position drilling holes based on development law of overlying rock fractureHU Jin-lin, ZHAO Jing, WANG Shuan-lin, ZHANG Zhi-rongProduction Technology90-9318Application of withdrawal technology in large slope dip of Chensilou Coal MineWEI Yu-jieProduction Technology94-9719Fault location method of mine power supply line based on WVD distributionYAN Wei-zhong, HU Kai-geng, WANG Bao-lai, WANG Chun-qing, LONG Da-pengProduction Technology98-10120Partition deterioration feature and control technology of surrounding rock of dynamic pressure coal roadway groupGAO Xiao-jun, YANG Zheng, GUO Chao-qi, DING Yan-xiong, LI An-ningResearch and Discussion102-106