1Potential energy distribution of rectangular roadway and reasons and countermeasures of broken anchor in shoulder in coal mineSUN Le-le, ZHANG Hai-jiao, KANG Yong-shui, YANG Hang1-42Study on strata behaviors law of lower slicing face in bifurcated coal seamZHAO Rong-kuo, PEI Zong-yuan, CAO Yuan-wei4-73Research on "Two Zones" height exploration under condition of increasing mining upper limitLUO Wu-xian8-114Economic analysis of deep peak load regulation of 350 MW supercritical CFB UnitYU Rui-hong, WANG Tao-tao12-13,275Research on supporting technology of coal winning roadway in small coal pillar isolated island working faceCHEN Jian-yong14-176Cause analysis and countermeasures of underground coal bunker blockageLU Jian-zhong18-207Numerical simulation of surrounding rock supporting parameters of gob-side entry in thick coal seam of deep mineDIAO Cheng-liang, XIN Chang-wei, MA Jun-jie, SUN Wei-kang21-228Discussion and design of constructing intelligent collaborative cloud support platform based on Internet plusWANG Jing-yang23-279Practice of coal uncovering and outburst prevention technology in crosscut of auxiliary roadway under working faceZHU Guang-ya28-29,4610Analysis of steel shed supporting technology in close coal pillar area of fully-mechanized caving face passing through return airwayWANG Wei30-3211Stress characteristics and control technology of gob-side entry retaining on working face in thin coal seamZHANG Lei33-3512Optimization design of control system of electric haulage shearer in automatic working faceZHANG Yao-ming36-3813Analysis of constant deceleration braking characteristics based on two core voltage regulatorsSONG bo, LI Ming-hang, FU Zhi-ming, LIU Zhen, XU Gui-yun39-4214Study on gas geological unit division of coal and gas outburst coal seamLI Shuang43-4615Analysis and optimization of high-pressure fire-resistant oil acid value exceeding standard for 350 MW unitWANG Tao-tao47-4916Research on overall matching and hydraulic support design of fully-mechanized working face in medium thick and thin coal seamWEN Guo-hui, ZHANG Jun, ZHU Jian-ping, SUN Zhao-bing, ZHOU Sheng-hu50-5317Study on comprehensive control technology and application for spontaneous combustion of gangue hill in Guojiahe Coal MineYANG Jian-kun54-5818Study on prevention and control measures of coal pillar impact in Yaoqiao coal mining areaSHEN Zhi-ping58-6119Practice of large section open-off cut roof fall control in Tian'an Coal MineJIA Zheng-biao62-6420Discussion on "integrated management" of coal mine safety risk classification contürol and accident hidden danger investigation and controlLYu Li-guo65-67 