1Water inrush risk assessment of No.15 coal floor after CBM development in Chengzhuang coal mineLI Jianlin, ZHAO Shuaipeng, CUI Yanhua1-72Study on the influence mechanism of fine water mist particle size on gas explosion characteristics in pipeCHANG Xinming, ZHANG Hongjun, WEI Chuisheng, LIU Yongzhi, WANG Fahui8-153Law and quantitative evaluation of methane desorption hysteresis of coal seam in Huanglong coalfieldGAO Zheng, MA Dongmin, CHEN Yue16-22,794Study on the preserve of reasonable small pillar width of gateway driving along gob-side of fully mechanized caving mining in specially thick coal seam faceTONG Rong, LI Huamin, SUN Hao, LI Dongyin23-295Study on acoustic emission characteristics in the process of fracture of coal-rock combination body with different thickness of coalLI Huigui, LI Huamin, GAO Baobin30-376Study on strengthening mechanism of penetrating anchorage bodyLIU Baomin, HAN Longfei, YAO Wei, SUN Haijun38-447Analysis of sedimentary facies of the lower segment of Dagushi formation in Mesoproterozoic Xiong'er group in Jiyuan area,Henan provinceHAN Fei, ZHENG Deshun, WANG Xin, WEI Danfeng45-558Prediction of geothermal recoverable amount in Wenquan town of Ruzhou city based on Modflow and time series methodZUO Wei, LIU Yuntao, LI Jianlin, WANG Shuwei56-629Study on brittleness index of shale based on stress-strain curveSANG Fengjun, CHENG Hanlie, ZHANG Xiaoyan, YANG Guoping, ZHAO Jianfeng, FU Caiyun, ZHANG Chong63-7010Research on evaluation and spatial differentiation of resource environment carrying capacity in Hebi city based on land function orientationZHANG Hebing, ZHANG Qinglei, LI Minghui, XIE Fangfang71-7911On the change of vegetation and water indicators and driving forces in Yanhu district of Yuncheng city in the past 31 yearsLIU Chang, MA Chao80-89,18012Analysis of spatial-temporal differentiation and influencing factors of logistics industry development level in the Central Plains Urban AgglomerationZHOU Guangliang, WU Ming90-9813A quick distance field computation of the complex geometry based on the improved ray intersection methodZHOU Hongmei, QIN Ge, ZHANG Xiaoming, Jing Shuangxi99-10314Surface roughness prediction of ultrasonic extrusion processing based on MEA-BP neural networkCHEN Shuang, ZHANG Zhi, XIAO Jinchu, HU Jiajin, ZHAO Ludong104-10915Development of low noise automatic cleaning device for automobile complex partsYANG Yanhong, LIU Feng, FU Hao, ZHAO Wen, LIAO Xinghua, WEI Shunda, LI Gaoqiang110-11616Error tracing and calibration analysis of colorful spectral confocal sensorYAN Yonggang, LIU Zhihao, ZHU Xiaoping, DU Hua, LI Jiafu, WANG Geng117-12317Research on continuous frequency conversion speed regulation of high frequency section of six pulse AC-AC frequency converterMENG Yaokai, KONG Bingya, CUI Zhanqi, FENG Gaoming124-13118Research on image defogging based on sky region segmentation and conditional constraint optimizationLI Shuping, ZHANG Liao, LIU Junli132-13819Research and implementation of face recognition algorithm based on LBP and ELMWANG Hongxing, HU Yongyang, DENG Chao139-14520Effect of freeze-thaw cycles on dispersion of seasonal frozen soil and experimental study on alum modificationYUAN Xiaoqing, CHEN Guanfu, SHI Zhiyong, ZHANG Yuqi, ZHAO Hongsheng, HAO Yankai, ZHONG Wenqing146-152 