1Study on adsorption and desorption law of coal and gas in long-term immersed air-dried coalSONG Yawei, YANG Shengqiang, YANG KaiTest Research1-62Experimental study on the principle and proportion of yellow sand grouting into glue in Mengxi Mining AreaYAO HaifeiTest Research7-123Study on the influence of fin types in condensation section on the cooling effect of the heat pipe to suppress coal spontaneous combustionWANG Jianguo, ZHENG Chenguang, WANG YanqiuTest Research13-174Establishment and numerical simulation of fluid-solid coupling model of coal seam under hydraulic fracturingZHAO Xiangdong, TANG JianpingTest Research18-225Research on mechanism and prevention of floor impact of gob-side roadway with large dip angle thick coal seam in deep mineLIU Xia, ZHAI Chunjia, ZHANG Qing, LI ChanghaoTest Research23-286Numerical simulation of spontaneous combustion characteristics of open-pit coal pilesYAN Qinyang, LIU Xingkui, CHANG XuhuaTest Research29-337Research on permeability change of overlying strata affected by mining in working faceSUN Qiyu, ZHU Yan, ZHAO XiaoxiaTest Research34-39,458Study on the law of air leakage in working face of Y-type ventilation in goaf based on tracer detection method and numerical simulationTIAN Yao, TANG Simin, WANG Jiali, CHANG Keke, GUO ZengleTest Research40-459Study on the effect of joint dip angle on roadway deterioration and regional control of surrounding rockGUO ZhonghuaTest Research46-5010Research on interface modification of aggregate mineral organic polymer materialsHUANG Xueman, DING Guanghui, QIN ChuanruiTest Research51-5511Air flow-dust distribution law of multi-dust sources in fully mechanized working face with large mining heightXU Qingyun, BAI Zhiyun, LI JinboTest Research56-5912Evaluation method of coal seam floor water inrush based on Surfer and its applicationZHANG Chenghang, ZHENG Jieming, ZHANG Yuzhuo, XU ZhiminApplication Techniques60-6413Application research of RetinaNet image recognition technology in coal mine target monitoringTAN Zhanglu, CHEN XiaociApplication Techniques65-70,7614Fire prevention and extinguishment technology during the stop-mining and withdrawing in fully mechanized working face with large mining heightKONG Qingjun, LU Qingbin, WU Jianbin, WANG Qiang, TUO LonglongTechnical Experience71-7615Application of permeability enhanced technology of hydraulic fracturing of ground well in quick coal uncovering of vertical shaftWANG Yongge, LINGHU JiansheTechnical Experience77-8016Research on multiple coupling control technology of deep mine roadway with soft surrounding rockXIE Fuxing, HE WenTechnical Experience81-84,8917Ventilation mode transformation and gas control practice of goaf in fully mechanized working face of Chengzhuang Coal MineZHAO Xueliang, ZHU Pengfei, LUO Huagui, WANG Ning, WANG RunchaoTechnical Experience85-8918Technology and practice of comprehensive control of dust in heading faceWANG Huifeng, CHEN DianfuTechnical Experience90-9419Research on dynamic outburst prevention technology of weak outburst coal seam based on refined predictionCHENG GuangTechnical Experience95-9820Application and optimization of test point deployment of distributed laser fire monitoring systemKUANG YonghuaTechnical Experience99-102 