1Analysis on jammed mechanism of hydraulic powered supports in high intensity coal mining face in shallow depth seam with thin base rockWANG Zhao-hui, YANG Sheng-li, KONG De-zhongMining and Underground Engineering1-5,92Study on performance of hole sealing retarded cement slurry in ultra-deep freezing holesCHEN Xin-nian, XI Jia-mi, ZHANG KunMining and Underground Engineering6-93Study on reasonable excavation sequence of complex bended roadway intersection of pit bottom in coal mineHAO Chang-sheng, YANG Yong-jie, WU Shao-yan, ZHANG Xiao-yunMining and Underground Engineering10-124Technology of determination on location of freezing wall water outlet for internal temperature measurement of freezerYE Yu-xiMining and Underground Engineering13-165Study on long and short bolt coordinate support technology of mine soft rock roadwayLI Ji, FENG Ji-cheng, ZHANG Sheng-kai, LIU Hai-yuanMining and Underground Engineering17-21,256Theoretical analysis on coal wall stability of fully mechanized 8.5 m high cutting longwall mining faceWU Hao, SONG Xuan-minMining and Underground Engineering22-257Initiative prevention and control technology of mine pressure bump under complicated condition of deep mineYU Zheng-xing, JIANG Fu-xing, LI Feng, ZHU Quan-jie, WEI Quan-deMining and Underground Engineering26-29,358Study on protective coal pillar left design method of mine shaft based on solid backfill miningGUO Shuai, ZHANG Ji-xiong, DENG Xue-jie, HUANG Yan-li, FANG KunMining and Underground Engineering30-359Study on floor heave control technology of ultra large cross section chamber in underground mineJIANG Shao-yong, XIAO Tong-qiang, CHEN Gui-yangMining and Underground Engineering36-3910Study on compressive strength change law of surrounding rock after water absorption in mine deep soft rock roadwayGUO Zhi-biao, WANG Jiong, DENG Xiao-wei, CHEN LianMining and Underground Engineering40-4211Influence of CO2 on explosion suppression characteristics of multicomponent flammable gas in coal mineCHEN Xiao-kun, DING Yuan-yue, CHENG Fang-ming, LI Zhen-baoSafety Technology and Engineering43-4712Coal spontaneous combustion prevention technology in mining face of gateway driving along goaf during mining stop periodLU Yi, YIN Zhao-yuan, MA Dong, CHEN Dong-chun, ZHOU WeiSafety Technology and Engineering48-5113Gas comprehensive control technology of upper protective seam in contiguous outburst seamsMA Guo-qiang, CHEN Ru-zhong, CUI Gang, LIU Ning-ning, LI LeiSafety Technology and Engineering52-5514Determination and application on new coal and gas outburst prediction indexLIU Xue-li, YOU Ji-junSafety Technology and Engineering56-58,6315Technology of harmful gas concentration control in mine refuge chamberZHANG Zu-jing, WANG Ke-quanSafety Technology and Engineering59-6316Optimization of hole bottom fluid pressure drop system in CBM wells based on Fuzzy Mathematical MethodSafety Technology and Engineering64-67,7217Study on coal compressibility and correction of compression amount based on compressibility of mercury injection testHAN Bei-bei, QIN Yong, ZHANG Zheng, WANG Gang, YU PengSafety Technology and Engineering68-7218Experiment study on influence factors of dust fall efficiency in mine mechanized heading faceWANG Zhi-bao, HUANG Li-ning, LIANG Ai-chunSafety Technology and Engineering73-76,9119Design of internet-based mine hoist equipment management system and applicationSHI Rui-Min, YANG Zhao-JianMachinery Electric and Automatization77-8120Fault detection method and joint elongation calculating for coal mining conveyor beltLI Xian-guo, MIAO Chang-yun, FU Yi, YANG Yan-li, ZHONG Wei-liangMachinery Electric and Automatization82-86 