1Study on dynamic mechanical properties of clay based on confined compression testZHANG Xiang, CHEN Jun, LI Jin, WEN Weishan, YI Hui, ZHAO KangpuTest Research1-82Study on hydraulic connection and seepage law of adjacent goaf of underground reservoir in coal mineZHI Guojun, LIU Run, YANG Ruigang, QIN Wei, JU JinfengTest Research9-153Research on dust prevention and control of door-type air curtain dust control and removal system in fully mechanized excavation faceMA Shengli, ZHANG Qiang, GONG XiaoyanTest Research16-204Research on granite crack identification by acoustic emission based on GMM+SVMHUANG Xiaohong, DONG Shiqi, LI Jing, LU YeTest Research21-28,345Study on dust tracing in working area of fully mechanized mining face with large mining heightWANG CunfeiTest Research29-346Study on the influence of particle size on wettability of lignite dustZHANG Yang, CUI Yunan, YAN Jingjing, LI Zhigang, GUO Hongguang, LI YuchengTest Research35-397Numerical simulation study on the mechanism of coal spontaneous combustion plugging and air control in goaf of gob-side entry retainingSI Junhong, WANG Yiqiao, CHENG Genyin, LI Lin, GAO ShijieTest Research40-45,518Study on seepage law of single fracture with different roughnessFENG Yudi, CHEN Shijiang, LEI Wang, LI Zhihao, CHANG YananTest Research46-519Integrated calculation method of fluid network sensitivity based on equivalent simplificationWANG Jue, ZHOU Xihua, BAI Gang, MENG FankangTest Research52-5610Numerical simulation of the effect of whole mineral air-reversing speed on chamber fire smokeLI Wenjing, QIU Liqiang, REN DajunTest Research57-60,6511Optimization study of hydraulic slotting parameters for soft coal seam in Yuwu Coal MineHUANG YongTest Research61-6512Research and application of early warning method of roadway deformation based on improved grey Verhulst modelLI Jia, WANG Wenjie, YIN DongApplication Techniques66-7113Characteristics of coal structure and construction of well logging model in Baoan block of Xinjing MineLI Juntang, WANG Rujiang, GAO Bin, WU CaifangApplication Techniques72-7714Application of IPSO-TS algorithm in air volume optimization of mine ventilation networkSONG JialinApplication Techniques78-8215Research on high-precision wireless microseismic monitoring technology based on 5G communication networkSUN Xuebo, LI Zhifu, WANG Yuanjie, CHEN Fabing, LI YanApplication Techniques83-9016Prediction of mine water inflow based on three time series modelsLIU Xiaodan, PAN GuoyingApplication Techniques91-95,10117Study on distribution law of "three zones" of spontaneous combustion in goaf of 40101 fully mechanized working face in Gaojialiang Coal MineYANG Fuqiang, FAN Junfu, WANG Zhaofeng, HAO Haiwei, WANG GuotaoApplication Techniques96-10118Analysis of influencing factors and prevention technology of coal fines fire in boreholes of coal mineZHOU Xiaoqing, QI Lingling, WANG ZhaofengTechnical Experience102-106,11119Design and optimization of sealed sampling bit in underground coal mineLU Zongwei, WANG Qingfeng, LI YanmingTechnical Experience107-11120Treatment technology of hydrogen sulfide in upper corner of fully mechanized caving face in Wudong Coal MineXU Kui, ZHAO Kai, GONG Xiaobing, ZHAO Zhongtai, WANG LeiTechnical Experience112-116 