Results 61 to 70 of about 3,077,132 (240)
Mechanism of dilatation catastrophe of coal and gas outburst
Meitan xuebaoCoal and gas outburst mechanism, as a century old global problem, has entered a bottleneck period in its prevention and control at this stage. Faced with the continuous occurrence of outburst accidents, it is still difficult to answer numerous scientific
Chaojie WANG, Xiaowei LI
doaj +1 more source
Damage characteristics and energy storage evolution law of coal with pressure relief borehole
Meitan kexue jishuIn the environment of deep strong mining-induced stress, phenomena such as borehole collapse, closure and compaction are prone to occur in large-diameter pressure relief boreholes in coal seams, and the pressure relief effect shows obvious time-effect ...
Yanchun YIN +5 more
doaj +1 more source
Coal-rock damage evolution characteristics based oninfrared radiation under uniaxial compressio
Gong-kuang zidonghua, 2018 In order to quantitatively study evolution law between temperater parameter of infrared radiation and coal-rock damage law under uniaxial compression, temperature data of infrared radiation during coal-rock failure process was collected and analyzed.
CHENG Fuqi +5 more
doaj +1 more source
Mesomechanics coal experiment and an elastic-brittle damage model based on texture features
International Journal of Mining Science and Technology, 2018 To accurately describe damage within coal, digital image processing technology was used to determine texture parameters and obtain quantitative information related to coal meso-cracks.
Chuanmeng Sun, Shugang Cao, Yong Li
doaj +1 more source
矿业科学学报, 2023 This experimental study probes into the evolution patterns of fine damage and mechanical and seepage characteristics of coal rocks using the coal rock triaxial servo experiment system by employing three types of pretreatment methods, namely heating ...
Qi Xiaoghan +5 more
doaj +1 more source
Geomatics, Natural Hazards & Risk, 2023 A numerical hydro-mechanical damage model is proposed in this paper to investigate the stability and failure characteristics of artificial dam in coal mine underground water reservoir.
Junpeng Ma +6 more
semanticscholar +1 more source
Dynamic response mechanism of initial failure of coal mass induced by in-situ stress in an outburst inoculation process of the working face for coal mining [PDF]
, 2023 There is still a great challenge to reveal the micro-macro dynamic mechanical behavior of initial coal failure induced by mining stress field in working face as a necessary condition for the outburst occurrence.
Zexiang TANG +4 more
core +1 more source
Materials, 2023 Highlights What are the main findings? Mechanical properties of steel fiber-reinforced coal gangue concrete (SCGC) are tested, proving the effectiveness of strength enhancement of SCGC and helping to expand the application range of SCGC.
Yaohui Cheng +6 more
semanticscholar +1 more source
Research on creep damage model of coal and rock mass around hole with different moisture contents
, 2022 In order to explore the influence of water on the creep characteristics of coal and rock mass around the holes, the square samples with holes and different moisture contents were prepared, and the staged loading creep failure test was carried out to ...
ZHAO Jianhui, XU Hongyi
core +1 more source
Analytical Damage Model for Predicting Coal Failure Stresses by Utilizing Acoustic Emission
Sustainability, 2023 Overburden collapse and water inrush in mines are primarily caused by rock fractures. Mining safety can be enhanced by monitoring and identifying early signs of coal failure in the mines.
Muhammad Ali +7 more
semanticscholar +1 more source