1Research on Coal Mining Method and Face Parameters under Multiple DisastersSUN Dong-feiDesign Technology1-52Comparative Analysis of Mining Area Coal Flow Transportation System Transfer Scheme in Oversize MineZHAO MingDesign Technology6-93Design and Application of the Three-dimensional Efficient Gas Extraction System in Gob of Fully Mechanized Caving FaceJIANG Li-mingDesign Technology10-154Study on Quantitative Warning Criteria and Early Warning System for Water Inrush from Coal FloorLIU De-min, YIN Shang-xian, LIAN Hui-qing, ZHAO Dong-yunDesign Technology16-205Discussion on Design of Steel Structure Coal Storage Shed with 45m SpanLIU Jian-kangDesign Technology21-256Asymmetric Deformation and Failure Characteristic of the Roadway Surrounding Rock and Its Control under Close Distance GoafDONG Yong-zhanConstruction Technology26-297Research on Floor Heave Failure Characteristics and Treatment of Large Section Soft Rock Roadway in Deep ShaftLIU Jian, HAO Wan-dongConstruction Technology30-338Determination of High Level Borehole Drilling Parameters Based on the Law of Roof Large Cycle and Small Cycle PressureWANG Zhen, LI Xiao-jiang, LOU Fang, JIA Yong-yongConstruction Technology34-379Research on Ultrahigh-pressure Hydraulic Cutting Equipment and Technology for Long Bedding DrillingZUO Xiao-kang, XING Yu-zhongConstruction Technology38-4110Application of Shotcreting in Shell Storage Bunker Using Inflated FormsWANG Yu-de, ZHANG Zhen-lei, HAN Xian-taoConstruction Technology42-4511Research on the Influence Area of Lower Mining Face to Close Distance Upward Mining FaceLU Xin, ZHENG Yong-sheng, YAN Ming-chen, LI Wei, CAO Shu-liangProduction Technology46-4812Application of Joint Grouting Reinforcement Technology in the End Mining Project of Large Mining Height Working FaceMA Sai, TAO Guang-mei, SHI Zhong-gangProduction Technology49-5313Application of Hydraulic Fracturing Technology in Hard and Stable Roof in Coal MineSU BoProduction Technology54-5714Research on Belt Conveyor Cleaning Device with Constant Pressing ForceJI Peng-feiProduction Technology58-6115Study of Surrounding Rock Stability Based on the Width-Height Ratio of Rectangular RoadwayYIN Shuai-feng, CHENG Zhi-heng, SUN Fu-long, YAN Da-he, ZHAO Zhi-yan, ZHANG Ke-xueResearch and Discussion62-6716Model Test Study on Interaction between Concrete-filled Steel Tube Support and Surrounding RockFAN Xiang-xi, WEI Hai-bing, XIAO Yu-hang, NIU Jin-ping, LI He-peng, BAO Tian-tian, LU Yun-fangResearch and Discussion68-7317Chemical Characteristics and Control Factors of Groundwater in Suntuan Coal MineLIU Kai-xuan, LIU Qi-meng, CHAI Hui-chan, ZHANG Mei, LI Jing-yingResearch and Discussion74-7918Research on Monitoring System of Coal Mine Gas Concentration Based on Fuzzy Intelligent ControlLIU Hui-jingResearch and Discussion80-8419Study on Natural Wind Pressure in Deep Mine and Air Leakage Characteristics in GoafMA Zu-jie, YAN Song, WANG Gang, WANG Ji-sheng, LIU Kun-lunResearch and Discussion85-8920Research on Hydraulic System of Monorail Advance Support Based on AMESimJIN MinResearch and Discussion90-93 