1Effect of liquid nitrogen freeze-thawing on coal body pore evolution and adsorption behaviorLI Xiaowei, LI Lei, ZHAO Dong, CAI Tingting, CHANG HaimingTest·Research1-72Research on optimization of hydraulic flushing and permeability enhancement technology in high gas and low permeability coal seamJING Junjie, YU Liya, YAN JingTest·Research8-14,233Experimental study on optimization of low frequency acoustic transmission frequency in loose coalDENG Jun, QU Gaoyang, REN Shuaijing, WANG Caiping, ZHAO XiaoyongTest·Research15-234Preparation of gasification ash slag gel and its inhibitory performance to coal spontaneous combustionZHENG Xuezhao, WU Peili, ZHANG Yanni, ZHANG Duo, GUO HangTest·Research24-305The influence of silicification on coal low-temperature oxidation characteristic parametersJIN Yongfei, ZHANG Guang, GUO Jun, LIU Yin, YAN HaoTest·Research31-366RA-AF characteristics of acoustic emission in uniaxial compression failure of different bedded coalLI Yang, LIU Yang, DING Cui, LI Zhenlei, ZHANG Xiufeng, DING XiaopingTest·Research37-437Experimental research on CO2 inhibiting the spontaneous combustion of high sulfur coalLAN Anchang, GUO Chunsheng, LI Yaoqian, ZHANG Jilin, BAI Gang, ZHOU Xihua, WANG SiqiTest·Research44-48,558Study on the influence of goaf filling on surface deformation in loess gully areaGUAN Junqi, LYU Yiqing, ZHAO GuozhenTest·Research49-559Analysis on water conductivity of fault based on pumping test and dewatering testZHAO Baofeng, LYU YuguangTest·Research56-6210Mechanical characteristics of mining coal in reverse fault areaZHOU RuiTest·Research63-7011Study on constitutive model of coal rock damage under graded cyclic loading and unloadingJING Laiwang, LI Xueshuai, YAN Yue, PENG Shaochi, LI Shuwen, JING WeiTest·Research71-7812Research on the influence of large diameter borehole pressure relief on surrounding rock strength and anchoring forceLI Xiaoyan, SUN Dequan, XIE Fenghua, CHEN Ying, WANG Zhaoyi, HOU TangyeTest·Research79-8413Study on physical properties and long term strength characteristics of recycled aggregate slurry for goaf governanceHE QianTest·Research85-9314Creep-large deformation experiment and constitutive model of soft rock in high and steep slope of open-pitMIAO HaibinTest·Research94-9915Control technology of blank zone in gas drainage boreholes group based on accurate measurement of borehole trajectoryZHANG Jun, WANG Xiaofei, WANG XiaolongApplication·Innovation100-10416Prevention and control technology of spontaneous combustion during withdrawal of thick seam layered mining faceLIU Guiwen, WANG Shuai, JING Xuedong, WANG ZhongjuApplication·Innovation105-10917Research on control effect of long anchorage and pressure relief synergistic control in deep and strong mining roadwayJIN Shengyao, CUI Qi, DENG Jinping, YANG Xingguo, WANG Sujian, ZHAO Shifan, LIU WenjingApplication·Innovation110-11518Application research of dust removal device with negative pressure suction and classification purification in underground coal mineCHU ZhiweiDesign·Development116-12019Research on multi-channel sealing device for automatic sealing of underground gas extraction hole in coal mineWANG Li, YAO Ningping, WANG Yi, LI ChengchengDesign·Development121-12720Construction of mine 3D visual ventilation system based on OpenGLJIANG Chenglong, YANG Yingdi, HUANG JiandaDesign·Development128-133 