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    Research on fractal characteristics and energy dissipation law in the process of coal fragmentation
    WANG Ning, LI Shugang, WANG Shibin, ZHANG Tianjun, GUO Yi
    2021, 52(4): 1-6.
    Abstract
    Research on differences of adsorbed water characteristics of low rank and high rank coals based on water vapor adsorption model
    YANG Yapu, CHEN Mingyi, TIAN Fuchao, WANG Zhenyang, TIAN Siao, FANG Rongya
    2021, 52(4): 7-12.
    Abstract
    Numerical simulation study on distribution law of respirable dust concentration and its relationship with turbulence intensity in fully mechanized mining face
    XIANG Xiaogang, SUN Shaowei, ZHAO Meicheng, DENG Xiaoliang, LI Peng, XU Rui
    2021, 52(4): 13-19.
    Abstract
    Prediction of gas emission from landing coal during driving based on gas desorption law
    ZHANG Yu, HAO Fuchang
    2021, 52(4): 20-24,30.
    Abstract
    Mechanism of rock burst in deep double pillar roadway
    ZHANG Zhenjin, DU Taotao
    2021, 52(4): 25-30.
    Abstract
    Research on influence of pore structure connectivity of low gas permeability on coal seam permeability
    YAN Min, ZHANG Binbin, LI Jinliang, ZHANG Kunyin, ZHOU Ming, YAN Dongjie
    2021, 52(4): 31-38.
    Abstract
    Variation of physicochemical parameters of coal during low temperature oxidation under different oxygen concentrations
    YANG Dejin, YANG Shengqiang, JI Guangrui, ZHAO Jianming, WANG Jibin
    2021, 52(4): 39-44.
    Abstract
    Effect of loading mode and impact velocity on crack propagation of coal
    FAN Guowei, SUN Zhuang, SHANG Junning
    2021, 52(4): 45-51.
    Abstract
    Mechanism of top-connection & dam-break for plugging hydrodynamic pathway by aggregate pouring method
    MOU Lin
    2021, 52(4): 52-59.
    Abstract
    Study on failure mode of surrounding rock in longwall face of steep coal seam
    ZHAO Bin, ZHAO Shankun, LI Lianghui, WANG Yin, ZHAO Yang
    2021, 52(4): 60-65.
    Abstract
    Experimental study on determination of resistivity of coal mine paste filling material
    WANG Chao, JIAN Yong, ZHANG Yanxu, SI Peitian
    2021, 52(4): 66-71.
    Abstract
    Experimental optimization of concentration ratio of buffering acid used for removing plugging of coal seam
    XUE Lei, ZHU Jianguo, GUO Chaofeng, NI Xiaoming, LI Yang, CAO Yunxing
    2021, 52(4): 72-77.
    Abstract
    Study on the influence of drilling fluid filtration on stability of coalbed wellbore
    ZHANG Yi, CHEN Dong, ZHANG Hui, LIU Mengmeng, LIU Fu, WEI Kai
    2021, 52(4): 78-84.
    Abstract
    Study on response characteristics of bolt bit drilling into sandstone
    SHI Wenbao, ZHOU Wei, LI Zhenfu, PENG Xingqiu
    2021, 52(4): 85-88.
    Abstract
    Study on application of integrated mining mode of “mining, selection, drainage, filling and mining”
    DENG Wuxian, DAI Zhixu
    2021, 52(4): 89-93.
    Abstract
    Coal seam gas control technology in working face with low content and high gas emission
    ZHANG Dongxu
    2021, 52(4): 94-100.
    Abstract
    Low-oxygen comprehensive emergency treatment technology for fully mechanized mining face overlying extremely large goaf with close distance
    TIAN Chen, LI Bin
    2021, 52(4): 101-105.
    Abstract
    Analysis on deformation and failure of Jijianao ventilation shaft roadway and supporting countermeasures
    YANG Yong
    2021, 52(4): 106-111.
    Abstract
    Mechanism and control of support crushing disaster during mining out the upper residual coal pillar
    YAO Zhihong, ZHANG Feiteng, ZHANG Yongqiang, YI Wengang
    2021, 52(4): 112-117.
    Abstract
    Study on reasonable design of filling wall for Y-type ventilation roadway in long wall working face
    SHANG Leilei
    2021, 52(4): 118-124.
    Abstract
    Gas collection technology for coalbed methane well site
    PANG Tao
    2021, 52(4): 125-128.
    Abstract
    Research on detection technology of pipeline type infrared methane sensor in negative pressure extraction pipeline
    DONG Kangning, YANG Jinfang
    2021, 52(4): 129-132.
    Abstract
    Design and implementation of a multi-mode information lamp identification card for positioning
    DAI Jianbo
    2021, 52(4): 133-136,141.
    Abstract
    Design of fixed blast valve for gas extraction grouting sealing device
    SUN Zhidong, MA Geng, SUN Yuning
    2021, 52(4): 137-141.
    Abstract
    Drilling track measurement technology of screen pipe under soft coal seam
    ZHANG Jun
    2021, 52(4): 142-146.
    Abstract
    Study on arrangement method of air quantity sensor for main fan in coal mine
    LI Man, DU Xuefeng, CAO Xiangang, HUO Man, MA Huan
    2021, 52(4): 147-151,155.
    Abstract
    Multi-thread double data cache data processing technology for coal mine safety monitoring system
    DING Yuan
    2021, 52(4): 152-155.
    Abstract
    Intelligent recognition method of borehole image fractures for coal and rock based on YOLO v3
    SU Yutong, YANG Weiyi, LI Junlin
    2021, 52(4): 156-161.
    Abstract
    Design of hydraulic pump station for blasthole drilling rig in coal mine
    GAO Xin
    2021, 52(4): 162-165,169.
    Abstract
    Design of current limiting starting circuit with thermal protection function
    HUANG Chun, WU Yincheng, LI Yiwen
    2021, 52(4): 166-169.
    Abstract
    Design of mine wireless communication system based on LoRa technology
    ZHOU Desheng
    2021, 52(4): 170-173.
    Abstract
    Preliminary selection of target intervals for coal measure gas development in Linhua multi-coal seam field of northern Guizhou
    FANG Zezhong, XU Hongjie, SANG Shuxun, JIN Jun, LIU Huihu, GAO Wei
    2021, 52(4): 174-181.
    Abstract
    Research on law of hydraulic fracturing crack propagation controlled by multi-preset slots in long drilling of coal seam
    XUE Weichao, LI Yanzeng, QI Liming, QIU Haisheng, JI Huaijun
    2021, 52(4): 182-188.
    Abstract
    Research on law and countermeasures of gas over-limit accident in Yuwu Coal Mine based on mathematical statistics
    CHAI Pei, YANG Ming, MAO Junrui, LIU Lei
    2021, 52(4): 189-193,200.
    Abstract
    Numerical simulation analysis of pressure relief effect under the combined action of horizontal slotting and roof fracturing
    XU Junjian
    2021, 52(4): 194-200.
    Abstract
    Three-dimensional “three zones” observation of spontaneous combustion in goaf of fully mechanized top coal caving face in shallow buried and extra thick seam
    LIU Dongming
    2021, 52(4): 201-205.
    Abstract
    CO gas emission law of coal seam caused by deep-hole broken roof blasting
    SUN Weili, YANG Guiru, HUANG Tao
    2021, 52(4): 206-211.
    Abstract
    Stability analysis of coal mining subsidence area of underlying fully mechanized top coal caving based on Rhino3D-FLAC3D coupling technology
    HUANG Jianfeng, WU Zhang, ZHANG Zhenzhen, LI Yongqiang, ZHANG Hao
    2021, 52(4): 212-217,225.
    Abstract
    Characteristics of surrounding rock failure of retracement channel during end mining of 22116 working face in Lijiahao Mine
    HE Yanjun, SONG Yaxin, LI Junqi, CHEN Kai, LI Zhiping
    2021, 52(4): 218-225.
    Abstract
    Determination method of maximum subsidence value for surface based on remaining free space height of overburden
    ZHANG Feng, TI Zhengyi, QIN Hongyan, WANG Kai, CAI Yongle, LI Jiazhen
    2021, 52(4): 226-230.
    Abstract
    Analysis of steep mining and benefit based on seasonal difference of rock and soil strength
    MA Zhonghui, HUANG Yukai, CHEN Shuzhao, PAN Chaogang
    2021, 52(4): 231-236.
    Abstract
    Study on instability mechanism of red clay slope under the influence of goaf
    LI Wei, REN Peng, LI Qingyao, GUO Xiafei
    2021, 52(4): 237-240.
    Abstract
    Research on depth sensitivity of weak layers in open-pit coal mine with soft rock slope
    ZHAO Guibin, FENG Haiyang, HAN Meng, LIANG Ye, CHEN Yafei
    2021, 52(4): 241-245.
    Abstract
    Statistical analysis of coal mine safety standards in China
    CHEN Yupeng, QIN Yujin, REN Shaokui, LIU Enhui
    2021, 52(4): 246-249,254.
    Abstract
    Research on evaluation of coal mine emergency management capability based on multi-level extension
    GAO Kangya, CHEN Shaojie, QI Yinge
    2021, 52(4): 250-254.
    Abstract
    Study on the influence of role stressors on miners’ unsafe behavior
    LYU Weijian, LYU Yongwei
    2021, 52(4): 255-259.
    Abstract
    Study on detection algorithm for miner dangerous behavior based on attention mechanism
    LI Chunhe
    2021, 52(4): 260-264.
    Abstract

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