1Innovation of borehole sealing technology in coal seam gas pressure measurementQI Liming, XIE Kaixi, GUAN Lianhe, WANG Shengyuan1-62Evaluation of standardized management system of coal mine ventilation safety production based on CW-RSRWANG Zhi'e, WANG Xueqiang, ZHANG Fengfei, XU Jingde, MA Jun7-133Simulation of fire overflow in confined space under different ventilation conditionsZHANG Chao, NI Xin, SONG Fumei14-204Experimental study on the excitation effect of the number of obstacles in confined space on gas explosionYAO Lilin, WANG Xueqiang, XI Guojun, XU Jingde, ZHOU Zhenxing21-265Research and application of automatic pressure equalization simulation experiment system based on microcontroller controlWAND Yuhuai, ZHU Yinsheng, LI Dongming, SUN Chunfeng, SI Junhong, WU Jianguo, GUAN Lianhe27-336Adsorption analysis of CO2/ N2 in bituminous coal and anthraciteCHENG Genyin, TANG Xiaochen, SI Junhong34-437Failure analysis of high frequency vibrating screenCHEN Zhangbing, XUE Yuqing, WANG Yunlong, XU Kefan44-488Stability analysis of underground plant enclosure of pumped storage power station under disturbing loadWANG Bo, WANG Ling, REN Yongzheng, MA Shiji, TIAN Zhiyin49-599Identification of representative sliding surfaces of slope under earthquake and evaluation of system reliabilityBAO Junwen, ZHAO Shaofei, LI Pingping, LIU Ziyuan60-6410Vibration monitoring and analysis of pumped storage power station unitWANG Ling, WANG Bo65-7111State estimation of non-smooth Kalman filtering for Wiener systems with backlashLI Haifen, LI Guan, XIE Yingxin, ZHANG Mingyue72-7712Study on surface deformation of Langfang based on SBAS-InSARJIANG Peihua, HU Baojun, TANG Wei78-8913Fuzzy comprehensive evaluation of highway subgrade construction risk based on variable weightWANG Chao90-9514Analysis of knowledge graph of modern apprenticeship research based on CiteSpaceDENG Fei, ZHANG Yuanyuan, SUN Linjun, LIU Junhui96-10515Research on the safety assessment and required separation of wake vortex for the mixed operation airspace of large transport aircraft and airlinerLI Jingwei, YUE Zhong, LI Xiaochen, WEI Zhiqiang106-11216Discussion on the method of extracting ideological and political elements from specialized courses in universitiesZHU Jianfang, ZOU Guanghua, SONG Fumei, LI Nan113-11817Quality evaluation of dual prevention system construction in industry and trade enterprises based on extension theoryYANG Haiming, BAI Yuan, AMIRE Xiabuhati119-124 