1Fractal characteristics of pore of low-rank coal in Huhehu Sag in Hailar BasinLIU Jipeng, HU Haiyan, LIU Dexun, WANG Tao, LIU Lihang, XIE ZhitaoTest·Research1-82Experimental study on deformation characteristics of water imbibition of coal body containing gasZHANG Xi, MA Yankun, GAO Kui, QIN WanliTest·Research9-143Characterization of pore-fracture structure and seepage simulation based on micro-CT scanningYUAN Yongguo, WANG Rui, FAN NanTest·Research15-204Comprehensive index evaluation of optimal adsorbent selection for CH4/N2 separationSU Xueyou, YUAN Yongmeng, MA Jinkui, ZHAO Lianghong, YANG XingTest·Research21-275In-situ stress response characteristics of CO2 storage capacity in coal seamZHAO ZhonglingTest·Research28-32,386Study on heterogeneous characteristics of topology structure of low-rank coal seepage pores in Ordos BasinCHE YuhengTest·Research33-387Destruction test of similar material sample based on digital image technologyFU WeiTest·Research39-43,508Research on flame retardant effects of different inert gases based on adiabatic oxidation experimentLIU GuiwenTest·Research44-509Experimental study for the effect of pre-oxidization on functional groups of coal surfaceSUN YongTest·Research51-5810Optimization study on filling material beside gob-side entry retainingHUANG Zhengdong, ZHANG Dongfeng, ZHANG XiaoqiangTest·Research59-65,7411Mine water inflow prediction and effect evaluation based on fused drilling-geophysical dataGAO Ruizhong, JI Tengda, YU Chan, YANG Yuhan, XIAO Binhu, ZHANG ChunyuTest·Research66-7412Typical model of water damage in Jurassic shallow coal seam mining and its zoningMIAO Yanping, YU Bo, JI Zhongkui, CHEN Xiaosheng, LU Bo, XUE XiaoyuanTest·Research75-8213Exploration of suspected poorly sealed borehole based on comprehensive analysis methodJI YadongTest·Research83-8814Experimental research on full-length anchoring system based on a new type of cement based materialYANG Houqiang, FENG Xiaowei, YAN ShileiTest·Research89-94,10115Research on dry-type dust removing device of borehole based on pressure air dust control and ring slot ejecting technologyGONG XiaobingApplication·Innovation95-10116Technology of delay in solving danger in small pillar roadway of kilometer gas mineLIU Yitao, WANG Jianda, SU Zhenguo, LI Shaogang, MO Yunlong, BI HuijieApplication·Innovation102-106,11217Prevention and control of gas hazard in close coal seam group under ultra-thick oil shaleZHANG DongxuApplication·Innovation107-11218Coal seam geological trend surface analysis technology based on borehole imagingSUN MiyinApplication·Innovation113-11719Prediction method and new monitoring technology of goaf spontaneous combustion fireCHEN Yang, WANG WeiApplication·Innovation118-12220Application of gas-water switchable deep hole quick sampling device in Xima Coal MineHUANG He, YUAN Yongmeng, ZHANG DongxuDesign·Development123-127 