典型文献
Experimental study on the deformation behaviour,energy evolution law and failure mechanism of tectonic coal subjected to cyclic loads
文献摘要：
Compared to intact coal,tectonic coal exhibits unique characteristics.The deformation behaviours under cyclic loading with different confining pressures and loading rates are monitored by MTS815 test system,and the mechanical and energy properties are analysed using experimental data.The results show that the stress-strain curve could be divided into four stages in a single cycle.The elastic strain and elastic energy density increase linearly with deviatoric stress and are proportional to the confining pressure and loading rate;irreversible strain and dissipated energy density increase exponentially with deviatoric stress,inversely proportional to the confining pressure and loading rate.The internal structure of tectonic coal is divided into three types,all of which are damaged under different deviatoric stress levels,thereby explaining the segmentation phenomenon of stress-strain curve of tectonic coal in the cyclic loading pro-cess.Tectonic coal exhibits nonlinear energy storage characteristics,which verifies why the tectonic coal is prone to coal and gas outburst from the principle of energy dissipation.In addition,the damage mech-anism of tectonic coal is described from the point of energy distribution by introducing the concepts of crushing energy and friction energy.
文献关键词：
中图分类号：
作者姓名：
Deyi Gao;Shuxun Sang;Shiqi Liu;Jian Wu;Jishi Geng;Wang Tao;Tengmin Sun
作者机构：
Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process,China University of Mining and Technology,Xuzhou 221116,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China;Carbon Neutrality Institute,China University of Mining and Technology,Xuzhou 221116,China;Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,China University of Mining and Technology,Xuzhou 221116,China;China United Coalbed Methane Co.Ltd.(CUCBM),Beijing 100083,China
文献出处：
引用格式：
[1]Deyi Gao;Shuxun Sang;Shiqi Liu;Jian Wu;Jishi Geng;Wang Tao;Tengmin Sun-.Experimental study on the deformation behaviour,energy evolution law and failure mechanism of tectonic coal subjected to cyclic loads)[J].矿业科学技术学报（英文版）,2022(06):1301-1313
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B类：
Experimental,study,deformation,energy,evolution,law,failure,mechanism,tectonic,coal,subjected,cyclic,loads,Compared,intact,exhibits,unique,characteristics,behaviours,under,loading,different,confining,pressures,rates,monitored,MTS815,test,system,mechanical,properties,analysed,using,experimental,data,results,show,that,stress,strain,curve,could,divided,into,four,stages,single,cycle,elastic,density,increase,linearly,deviatoric,proportional,irreversible,dissipated,exponentially,inversely,internal,structure,three,types,which,damaged,levels,thereby,explaining,segmentation,phenomenon,cess,Tectonic,nonlinear,storage,verifies,why,prone,gas,outburst,from,principle,dissipation,In,addition,described,point,distribution,introducing,concepts,crushing,friction
AB值：
0.501057
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