1Study on fly ash based grouting materials development and its properties influencing factorSI ZhiqunQuestion Discussion1-5,112Status and remediation plan of groundwater system after mining in steeply dipping coal seamHUANG Xiangkuan, HUANG WeipingQuestion Discussion6-113Variation law of water seepage field in roadway surrounding rock of drilling and circulating hot coal seam injectionLI MaolinQuestion Discussion12-18,234Study on supporting strength of surrounding rock in paste filling working faceZHANG Huijun, YANG Zhenfeng, LIU Danzhuo, NIU LijuQuestion Discussion19-235Research on development trend and overall design of unmanned driving technology in smart minesWANG BojunQuestion Discussion24-316Study on top coal caving of fully-mechanized caving face in extra thick coal seam of Tashan Coal MineCHEN XiaoweiQuestion Discussion32-387Study on retention of sand proof coal pillars for mining under loose and weak aquifersCHEN JianweiQuestion Discussion39-438Feasibility analysis and research on Wanyuan coal storage and blending base projectLI Yongjin, LONG JunQuestion Discussion44-48,519Research on early warning device of wire straightening in diamond mesh machineQI Dunlei, WANG Jun, CUI Chuangchuang, LI DongqiQuestion Discussion49-5110Feasibility study and application of upward mining based on finite element RFPA2D numerical simulationSUN JianxinQuestion Discussion52-55,6211Discussion on mechanism of strength deterioration of water immersion coal samples and optimization method of retaining formula for waterproof coal pillarsXU Xiangyu, HUANGFU Mengna, MA Mengting, LI Dongchen, GUO Yongqiang, XU ZhiminQuestion Discussion56-6212Research and application of anti-punching technology of cutting slit blasting charge in mining faceYU Yan, TANG ZhihuaExperimental Study63-6913Discrete element method simulation and experimental study on flow characteristics of bulk coal in coal bunkersYAO He, TAO Yanan, FAN JunkaiExperimental Study70-76,8114Research on law of air leakage channel generated by narrow coal pillar based on PFC3DZHANG Leqiang, LI LiangExperimental Study77-8115Simulation study on influencing factors of deformation and failure of floor pumping roadway of soft surrounding rockGAO Zhanfeng, LIU Ruijie, LIU Heng, Lü HongExperimental Study82-9016Hole sealing performance test of drilling capsule sealer and its application in hydraulic fracturingYAO Mingzhu, LI Yiqiang, MA MingjunExperimental Study91-9517Research on application of mine distributed laser fire monitoring system in Shanjiaoshu MineWANG JunCoal Safety96-10018Analysis of pumping effect of hydraulic permeability enhancement and extraction in bedding drillingWANG PengCoal Safety101-104,10919Statistical analysis and evolution trend of coal mine gas accidents in China from 2001 to 2023ZHANG YuanjieCoal Safety105-10920Research on stress determination and multi-source monitoring and early warning of rock burst in working faceYANG Xing, GENG HuiCoal Safety110-116 