1Research on large deformation mechanism of deep fault fractured zone roadways based on Voronoi block modelLI Xiang, CHEN Zi-you, LUAN Bo, DU Duo-peng, LIU Jing-yiQuestion Discussion1-7,112Exploration of operation impact of low temperature economizer combined with air heater for 300 MW unitsSONG GangQuestion Discussion8-113Research and application of intelligent operation and maintenance system for coal mine transmission linesZHU Ke-ren, LIU Fa-yong, HE LinQuestion Discussion12-164Research and application of intelligent control and material distribution system for underground vehicles based on UWB technologyZHOU Ji-qing, YANG De-junQuestion Discussion17-21,265Optimization of AGC and deep peak shaving control performance of the unitWU Lian-yingQuestion Discussion22-266Practice of developing photovoltaic power generation engineering in Panxi coal mining subsidence areaLI Yong-jinQuestion Discussion27-30,347Optimization and application of optimal valve point sliding pressure for units under heating modeHAO Feng, ZHAO QiangQuestion Discussion31-348Research on deep peak shaving transformation of denitration system of supercritical CFB boilerLI PengQuestion Discussion35-39,449Practice of mine production scheduling platform based on microservice architectureCHEN NingQuestion Discussion40-4410Research on ore pressure law of the fully-mechanized mining face in Huopu Coal MineZHOU Ze, ZHOU Jin-lianQuestion Discussion45-4811Problems and countermeasures of intelligent fully-mechanized mining face in coal minesZHU Wei, LI Xu-weiQuestion Discussion49-5212Application of pressure matcher in extraction steam heatingFANG Da-ming, ZHAO QiangQuestion Discussion53-5613Study on surface movement deformation characteristics of repeated mining face in thick loose layersWANG Kang-jian, TANG Jin-bao, SHI Ning-ning, LIU Yong-qiExperimental Study57-6314Research on top coal movement law of strike long wall fully-mechanized caving face in steep-inclined thick coal seamsLYU Wei-wei, KONG ZhengExperimental Study64-68,7615Similarity simulation study on overlying rock migration law of the excavation of extra-thick coal seamsSHI LianExperimental Study69-7616Analysis of sedimentation characteristics of coal slime deposits in drainage roadway of fully-mechanized caving face with large water siltYANG Hao-bo, KOU Gao-yuan, YE Lei, LIU Ding, ZHAO An-xinExperimental Study77-81,8617Practical application of KJ452J personnel and vehicle precise positioning system in coal mine undergroundLIU Yan, TONG Ze-wen, LIU Shi-jieExperimental Study82-8618Study on micro-expansion cement performance test and grouting parameters in coal mine extraction drillingLI Zhi-li, QIE Li-min, WANG Li-tao, ZHAO Xian-mingExperimental Study87-9119Numerical simulation study on dynamic response characteristics of coal pillar under dynamic load impactXIE Fang-peng, HOU Ji-chuan, LI Hui-bo, CUI Chao-chaoExperimental Study92-9720Types of water damage and prevention and control measures in Guanwen mining section of Guxu mining area in southern SichuanWEI Xin, ZHENG Yin-nan, ZHANG Feng, CHEN Chuan-yan, LU Cun-jinCoal Safety98-103 