1Calculation of temperature field and average temperature of multi row pipes straight freezing wallSU Lifan, NING Fangbo, XU Bingzhuang1-112Research on the calculation method of frost heave in the tunnel close-distance underpass the structureWANG Lei12-203Construction technology of freezing auxiliary inclined shaft parallel excavation operation in Shengfu MineYAO Mingjun, LIU Shuan21-254Application of gas drainage technology in coal face with roof cutting and roadway retaining with"110 construction method"in Dingji MinePAN Hui, WANG Kun, MA Jiaxing, CHEN Dezhong, YAN Anqiang, TANG Zhihua26-305Research on the reasons and preventive measures for the disturbance of bottom air flow in multiple air inlet shaftsWANG Zhenguo, TIAN Suchao, BAO Diwen, LI Bo31-356Application of self-drilling hollow grouting bolt technology in high stress soft rock roadwayLI Junyao36-407Numerical analysis of the support scheme for the lower yard of Wangwa No.2 MineZHAO Lixin41-458Effect of basalt fiber on properties of one-part alkali-activated slag and fly ash mortarCHEN Haiming, ZHANG Yadong, WU Peng, CHEN Jie, QIN Ziguang46-509Study on durability of high strength concrete wall of deep shaft with high salinity water stratumHU Kun, YAO Zhishu, ZHU Hongwei, WANG Rui, DING Zongchuang51-5710Research on hydrochemical evolution mechanism of groundwater in mining area based on reverse hydrogeochemical simulationWANG Zijian, WANG Hu, DENG Shiqiang58-6211Energy evolution characteristics of carbon nanotube-polyvinyl alcohol concreteBAI Hao63-6812Analysis of influence on frozen wall under surface sudden seepage in long-distance and large-section tunnelHUANG Baolong, MENG Xiangtian, HAN Yufu, YANG Zhigang, ZHANG Song, WEN Hanhong, WEI Kedong, YANG Ning69-7613Analysis of influence of excavation parameters of double-line shield tunnel on induced surface settlementWANG Haifeng, ZHANG Jiaxin, ZHAO Mingzhe, WANG Shuaifei, JI Xiaoyi77-8414Main methods and status of seismic research on underground metro stationsXIE Hongfei, CAI Haibing85-9015Discussion on the application of standardized operation in coal chemical industryLIU Bing91-94 