1Dissection of the Main Points in "Detailed Rules for Coal Mine Water Prevention and Control" ModificationLIU Shou-qiang, WU Qiang, ZENG Yi-fanDesign Technology1-42Optimization Design of the Development Plan of Hami No. 1 Mine based on Overall Comparison MethodLIU LiangDesign Technology5-83Mining Scheme Design for Ultra-thin Bedrock Shallow Coal Seam Crossing GullySHENG Chao, WANG Chang-you, SUN Dong-fei, ZHANG Xiao-pingDesign Technology9-124Width Optimization of Section Coal Pillar of Deep Fully Mechanized Mining FaceNING JingDesign Technology13-175Improvement and Application in Dijkstra Algorithm in Dynamic Route Selection of Mine FloodZHOU Yue, ZHU Xi-an, WANG Zhan-gangDesign Technology18-226Design of Intelligent Voice System of Coal Mine Working FaceYANG Qing-xiang, YANG Xiu-yuDesign Technology23-277Design of Monitoring and Control System of Coal Mine Safety Based on CAN Field BusWANG Qi-xuan, CHEN Bei-chenDesign Technology28-328Design of Safe Mixing and Regulation Process for Low Concentration Gas Using Gas Storage Thermal OxidationLI LeiDesign Technology33-369Floor Heave Mechanism and Control Technique of Soft Rock Roadway in Anshan Coal MineZHANG Jie, ZHOU Fu-wei, YANG Tao, XIE Pei, SHEN Rui-jie, GUO Jian-pingConstruction Technology37-4010Hard Roof Flexible Template Gob-side Entry Retaining Process and Parameters OptimizationYUE Shao-fei, WANG Kai, ZHANG Xiao-qiangConstruction Technology41-4411Deep-hole Blasting Control Technology of Hard Top Coal in Fully Mechanized Caving Face of Thick Coal SeamKONG Ling-qiangConstruction Technology45-4912Application of High Rotation Speed Compound Slag Drilling Technology in Complex Coal SeamYANG Hu-wei, FANG Yun-linConstruction Technology50-5313Research and Application of Full-length Screen Pipe Technology and Equipment for Bedding Gas Drainage DrillingMENG Zhan-chengConstruction Technology54-5914Study on the Filling Technology of High Water Material in Top-coal Caving FaceWANG MengProduction Technology60-6415Application of Hydraulic Punching Technology in Seam Gas Drainage in Yuwu Coal MineREN Zhong-jiuProduction Technology65-7016Application of Gas Control Technology in Long-distance Tunneling FaceSHI Zeng-zhu, ZHOU NingProduction Technology71-7317Integrated Dust Control Technology for Fully Mechanized Coal Mining Face in Zhangjiamao Coal MineLI Yu-jie, WU Hai-long, GAO Kui, ZHANG Shu-chuanProduction Technology74-7818LoRa Technology and Its Application Analysis in Coal MineZHANG XinProduction Technology79-8219Research on Coal Slime Ash Reduction in All-size-prepared Steam Coal Preparation PlantJIA Huai-jun, DONG Lian-ping, LI Zhi-hong, FAN Min-qiangProduction Technology83-8620Optimal Study on Horizon Position of High Level Gas Drainage Gateway in Hard Roof Mining FaceYANG PengResearch and Discussion87-91 