1Discussion on the Preliminary Planning of General Contracting of Construction ProjectLIU Jian-junExpert Forum1-62Key Points of Environmental Impact Post-assessment of Ecology and Underground Water for Coal Mining ProjectsCUI Yan, SONG Ying-xia, LI NaDesign Technology7-103Study on Roadway Layout and Support of Close Coal Seam Combined Mining in Xiangyuan Coal IndustryWANG Jun-jie, BAI Xiao-shengDesign Technology11-154Safe and Efficient Mining Technology for Steeply Inclined Fully Mechanized Mining FaceTANG FengDesign Technology16-195Research on Mine Portable Wireless Vibration Sensing System with High Frequency and Low Power ConsumptionHUANG Shao-jieDesign Technology20-236Research and Application of Seamless Temperature Monitoring System for Early Warning of Coal Spontaneous CombustionZHU Xing-pan, XU Min, WANG Peng, HUANG Ke-junDesign Technology24-277Product Structure Optimization for Tongxin Coal Preparation PlantBO Chun-li, WANG Da-wei, FAN Yu-pingDesign Technology28-328Construction Technology of Grouting Reinforcement and Long Pipe Shed Advanced Support for Inclined Shaft Guide Cave under Open-pit DumpZHU Qi-binConstruction Technology33-359Support Construction Technology for Roadway Crossing Karst CavesXU Zhi-yongConstruction Technology36-3910Research on Wedge-shaped Wall Support Technology at Intersection Point under Isolated Coal PillarWANG Bo, YANG Zhang-jieConstruction Technology40-4511Application of Constant Resistance Anchor Cable Support of Gob-side Entry Retaining Formed by Roof Cutting Pressure Relief in Hard Thick RoofWANG Jiong, LIU Yu-xing, MA Xin-gen, JIANG Qian-qian, ZHANG Zheng-jun, GAO RenConstruction Technology46-4912Application of Layered Grouting Process in Surrounding Rock Reinforcementof Cutting RoofLI Ai-jun, LI Xi-fanConstruction Technology50-5313Application of Bailey Truss Platform in Roof Structure Construction of Coal Storage SiloCAO Jun, WU ZanConstruction Technology54-5714Research on the Condition and Effect of Grouting Reinforcement of Working Face FloorXU Yan-chun, ZHANG Luo-xun, ZHANG Shu-jun, LUO Ya-qi, LI LeiProduction Technology58-6215Study on the High Efficiency Gas Extraction Technology with Coordinated Drilling and Flushing for High-gas High-pressure and Low-permeability Coal Seams in Guizhou Mining AreaLIANG Yin-quan, WANG Jin-shang, FENG Xing-yuProduction Technology63-6616Application of Grouting-curing-extracting Comprehensive Anti-burst Coal Uncovering Technology in Wulunshan MineCHEN Gong-hua, CHEN Liu-yu, LI Xi-jian, LI Lei, YOU Xian-zhongProduction Technology67-7017Layer Parameters Optimization of High-level Directional Drilling in Fully Mechanized Caving FacePENG Dong, DUAN Hui-jun, ZHAO Yong-zheProduction Technology71-7618Optimization of Drilling and Completion Methods for Horizontal Wells of Coalbed Methane in Huabei OilfieldLIU Li-jun, CHEN Bi-wu, LI Zong-yuan, ZHANG Bo, LI Jia-feng, LIU BinProduction Technology77-8119Study and Application of Lump Coal Anti-crushing Technology in Majiatian Coal Preparation PlantSUI Zhan-fengProduction Technology82-8520Bolts and Cables Layout in the Same Raw and Synergetic Support and Its Application in Nanguan Coal MineSHAN Ren-liang, YUAN Hong-hu, HUANG Peng-cheng, LI Zhao-long, BAI Yao, LI HanResearch and Discussion86-91 