1Analysis of roof water inrush type in Guojiahe Mine-fieldCAO Hai-taoQuestion Discussion1-6,92Current situation and development trend of intelligent coal mine power supply monitoring systemCHEN Chuang-ju, WEI Yu-hongQuestion Discussion7-93Study on the first weighting of fully-mechanized top coal caving face in Jurassic extra thick seamSHEN Yin-pengQuestion Discussion10-124Discussion on intelligent operation technology route of condensate polishing for the first 1 000 MW lignite unit in ChinaSUN Zheng-huaQuestion Discussion13-165Study on the cause of fracture of the valve stem of steam turbine high pressure regulating valveFANG Da-ming, REN Tong, ZHAO Qiang, HAO FengQuestion Discussion17-20,296Study on roof deformation characteristics in empty roof area of heading faceCAO Dong-li, WANG LingQuestion Discussion21-24,297Study on comprehensive utilization of general industrial solid wastes in circulating fluidized bed boilerHOU Xiu-mengQuestion Discussion25-298Improvementof coal quality online detectionmethodof laser-induced breakdown spectroscopyZHANG Ye-cai, ZHENG Jian-yun, HAO Hong-liang, ZHANG Yong, ZHAO Shang-yong, HOU Zong-yu, WANG ZheExperimental Study30-359Experimental study on failure characteristics of coal and rock under unloading confining pressureLI MinExperimental Study36-39,4310Study on deviation law of gas drainage borehole trajectory in this coal seam of Changcun Coal MineZHANG Hui-fengExperimental Study40-4311Determination of small coal pillar parameters in goaf excavation of fully-mechanized caving face in Tongxin Coal MineWANG Xing-yao, DU Shu-yuExperimental Study44-48,5212Study on optimization of ventilation system modification in Dongxia Coal MineDING Xiao-min, DONG Hao-fu, SHI Jian-she, ZHANG Wei, LI Wen-tao, WEI Zong-kangExperimental Study49-5213Design and development of reinforced rubber-sheathed traction cable for intelligent miningLIU Xue-feng, WU Zhong-weiExperimental Study53-57,6414Prediction of the height of the water-conducting fracture zone based on improved WOA-SVMLUAN Zhou, WANG Yi-chang, ZHANG Xi-buExperimental Study58-6415Study on the law of face pressure based on new monitoring technologyWU Hong-binExperimental Study65-70,7416Prediction model design of sludge calorific value based on support vector regressionHU Yuan-fengExperimental Study71-7417Study on slagging and contamination test of high alkali coal combustion and targeted operation measures of boilerSONG Wei, LI Mao-liangExperimental Study75-78,8518Rock burst risk assessment of layer mining for extremely thick coal seam of Zhundong No.2 Coal Mine in XinjiangHU Yun-fei, QIU Jin-wei, XUE Jian-qiuCoal Safety79-8519Investigation and analysis of fracturing pumping effect and influence range of surface wells in Tunlan Coal MineLONG Hong-junCoal Safety86-90,9520Application of quick plugging of borehole in water inflow reduction controlXU Cheng-haiCoal Safety91-95 