Results 31 to 40 of about 1,774,538 (199)
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
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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
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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
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, 2020 Using PCI-2 acoustic emission(AE) system, the AE experiments of different confining pressures (0, 8, 16, 5 MPa) were carried out in Baijiao coal mine in Furong, Sichuan Province, in order to reveal the change rule of ringing count rate, the temporal and ...
Qijun, HAO, Jie, YU, Xiaohui, LIU
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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
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Damage law and mechanism of coal-rock joint structure induced by liquid nitrogen at low temperature
Scientific Reports, 2022 The width and degree of connectivity of coal-rock joints directly affect the seepage capacity of flow energy such as gas. To study the damage law and mechanism of the coal-rock joint structure under the action of liquid nitrogen, two methods of liquid ...
Hewan Li +4 more
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Meitan xuebao, 2023 In the mining of nearly horizontal open-pit coal mines, transportation flat plates are usually arranged on the end-slope. Reciprocating transport operations of large heavy-duty trucks cause significant cyclic loading and unloading effects on the ...
Yanlong CHEN +5 more
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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
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Applied SciencesPre-grouting is an effective method to reinforce fractured coal in front of working faces. The mining of adjacent working faces after grouting can cause early damage to the grouting cemented coal. To explore the mechanical properties of grouting cemented
Aibing Jin +4 more
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