CAJ | 학술논문

矿井瓦斯是煤岩体赋存环境因素之一，同时也是影响煤岩力学性质的主要因素，研究基于煤岩损伤统计特征及 Drucker －Prager 破坏准则，分析得出了煤岩单轴压缩载荷作用下损伤演化本构模型，基于煤岩弹性波速相关理论建立了孔隙瓦斯对煤岩力学性能劣化损伤力学模型，并在此基础上得出了考虑孔隙瓦斯劣化作用的煤岩损伤本构模型；以原煤及型煤试样为研究对象，开展了不同孔隙瓦斯压力条件下煤岩单轴压缩破坏实验，基于实验研究结果对模型进行了验证。研究结果表明所建立的模型可以很好的反映孔隙瓦斯作用下煤岩单轴压缩载荷条件下的应力－应变关系。
광정와사시매암체부존배경인소지일，동시야시영향매암역학성질적주요인소，연구기우매암손상통계특정급 Drucker －Prager 파배준칙，분석득출료매암단축압축재하작용하손상연화본구모형，기우매암탄성파속상관이론건립료공극와사대매암역학성능열화손상역학모형，병재차기출상득출료고필공극와사열화작용적매암손상본구모형；이원매급형매시양위연구대상，개전료불동공극와사압력조건하매암단축압축파배실험，기우실험연구결과대모형진행료험증。연구결과표명소건립적모형가이흔호적반영공극와사작용하매암단축압축재하조건하적응력－응변관계。
Coal mine gas is one of the environments where coal or rock body occurs , and it is also a key factor to influence the mechanical properties of coal or rock .By investigating the statistical characteristics of coal or rock damage and Drucker-Prager destruction criteria, the constitutive model of damage evolution under coal or rock uni -axial compression load was obtained .According to coal or rock elastic wave speed related theory , the mechanical model of degradation damage of coal or rock mechanical performance by pore gas was established .Based on this, the constitutive model of coal or rock damage taking into account the degradation role of pore gas was attained .With raw coal and moulded coal as research object , the coal or rock uniaxial compression damage experiments under dif -ferent pore gas pressures were conducted .According to the experimental results, the model was validated.The re-search results indicate that, the established model can satisfactorily reflect the stress -stain relationship of the loading condition under the role of pore gas.