1Mercury Intrusion Experimental Study on the Effect of Particle Size on Pore Characteristics of CoalQIAO YonggangTest·Research1-42Prediction of Time Series for Gas Emission Quantity Based on HHT-CS-ELM CharacteristicsWANG YongwenTest·Research5-83Study on Deformation Laws of Briquette Coal Under Adsorbing Different GasesLI Jing, SONG Tianbao, WANG Yumin, XIE Yuyi, HONG HuanxiangTest·Research9-12,164Coalbed Gas Geological Characteristics of Ⅱ1 Coal Seam in Zhongmacun MineYANG Chengtao, LI BingTest·Research13-165Difference of Dynamic Variation Laws of Gas Diffusion Coefficient of Soft and Hard CoalLIU Yanwei, LI Tong, XUE WentaoTest·Research17-20,246Research on Droplet's Wake Effect with Dust Particle's Accelerated Sedimentation in Dust Control by SprayingWANG MaohuaTest·Research21-247Experimental Study on Diffusion Characteristics of Water Mist in Simulated RoadwayZHAO Qiankun, SHI Jingtai, REN WanxingTest·Research25-27,318Development of a Kind of Foamed Gel and Its Sealing and Inhibition CharacteristicsSHEN Yiding, WANG Deming, WANG Qingguo, TIAN FuchaoTest·Research28-319Study on Infrared Spectrum Characteristics of Coal Under Impact DamageWANG Qijiang, LI Xiaoxiao, HAN Boshi, JIA Zepeng, HU An, JIN Kaifu, WANG JiajianTest·Research32-34,3810Research and Analysis on Compression Strength and Shear Strength Test of Fly Ash and Coal Gangue ConcreteYAO Wenjie, HUANG Jinkun, HE Zhuangzhi, YAO Zhaolong, GU MinghuiTest·Research35-3811Study on Height Prediction of Water Flowing Fractured Zone Caused by Full-mechanized Caving Mining in Jurassic CoalfieldXING Maolin, LI Wenping, YIN JinghuiTest·Research39-4212Study on Development Degree of Collapse Column in Changping Mine and Major Controlling Factors for Its FormationYANG Gaofeng, DOU Wenwu, LI WenlongTest·Research43-4613Research on Blasting Vibration Signal Denoising Method in Freezing Vertical ShaftFU Xiaoqiang, CHEN Qifan, LI Ming, ZUO Jinjing, SHI GuoliTest·Research47-5014Applied Research on Hole Shape of Hole-sharped Pressure Release Support Materiel in High Stress RoadwaySUN Yanxin, LI Yanbin, GUAN Jie, XUE GuoqiangTest·Research51-5315Experimental Study on Destruction Characteristics of Floor Strata Under MiningWANG XianyongTest·Research54-5716Experimental Study on Parameters of Filling Body of Gob-side Entry Retaining in Fully-mechanized Top-coal Caving Mining Face of Soft Coal SeamZHU Wenchao, SHI LeiTest·Research58-61,6517Research on Joint Control for Floor Heave in Weakly Consolidated Mud-sand Stone Interbedded Soft Rock RoadwayXU Jun, ZHANG KaishunTest·Research62-6518Research on Movement Law of Surrounding Rock of Short-wall Cemented Filling and Skip MiningLI Fei, KONG Kai, ZHANG Xinguo, PANG ZhenzhongTest·Research66-6919Study on Reasonable Backfill Strength of Lane Filling MiningXU XiaomaTest·Research70-72,7620"4· 17" Landslide Mechanism of Top Slope in Pingzhuang Western Surface Coal MineCHEN FengyangTest·Research73-76 