1Analysis on strengthening effect of freezing pipe to self-tensile performances of frozen soil specimenLU Xiangzhong, ZHANG Qingwu, GONG Zhenquan, ZANG Mengchen1-72Research on mechanical characteristics and freeze-thaw characteristics of cement-modified frozen soilFang Liangwen, Li Fangzheng, Ding Hang, Yang Ning8-133Study on the distribution law and influencing factors of freezing temperature field in water-rich formation cross passageKONG Linghui, SUN Jie14-194Excavation method and"freezing wall+ cement reinforcement"joint support system of large cross section channelYANG Zhigang20-23,195Study on application of pipe jacking construction technology to sewage pipe under Huayi Avenue in DalongwanLI Yiwei24-286High pressure rotary injection technology applied to pass through shaft in loose topsoilWANG Shuai, HAN Lijun, ZHANG Shukun, WANG Haohao29-357Application of rockburst prevention and pressure release technology to coal mining face in coal mineCHEN Ming, REN Hui36-398Practices on harmlessness and resource recycling technology of abandon mud from mine constructionJIANG Ziliang40-449Preparation and curing technology of concrete for precast construction of drilling shaft lining in winterWANG Zongjin, WANG Chen, QI Yanqiu, LIU Weijun45-5010Rapid construction technology applied to shallow depth coal chuteWU Mingming, GUO Zhendong, DING Shucong51-5611Optimum design and application of high slope mine roadheaderZHANG Yujie57-6212Analysis of grouting diffusion mechanism of cement slurry in different sand layersHAN Gang, CHENG Hua, WANG Xuesong, XIE Bao, RONG Chuanxin63-67,5013Study on surrounding rock stabilized technology with coal pillars left in deep thick seam gob-side entryYaermaimaiti Taiwaikuli68-72,5614Study on the influence of stored coal spontaneous combustion on temperature field and thermal stress of the wall of coal falling siloWU Chunye73-7715Analysis on the stability of surrounding rock in gateway retained along goaf side under pressure releasing of pre-cutting roof closed to gatewayGUAN Shufang78-8416Application of modular automatic grouting station in engineering projectsAN Xuliang, DENG Yun, LI Shengsheng, LIANG Min, CHEN Long, YANG Xue, YANG Ming85-8917Study on distributed control system of hydraulic powered support test device based on industrial EthernetYAO Yuwei90-94 