煤岩的广义弹粘塑性模型分析

The analysis on the elastical plastical sticking model about the coal and other soft rocks

通过现场工程调查、煤岩的显微结构实验和全应力 -应变实验分析 ,提出一种适宜于研究矿山煤岩流变力学问题的广义弹粘塑性模型 ,建立了模型的本构方程、简单应力状态下的蠕变方程和复杂应力状态下的蠕变方程 .最后 ,利用非线性回归分析法———最小二乘法中的Mar quardt法对蠕变实验结果进行分析 ,获得有关煤岩的流变力学参数 .理论分析结果和试验结果对比表明 ,两者之间具有较好的吻合性 .

The elastic plastic sticking model, a new mechanical model, of the coal and other soft rocks has been proposed through field investigating and laboratory testing, including the microstructure testing and the whole stress strain testing. The physical equation and creeping regularity in simple or complex stress conditions has been discussed. The creeping parameters of the model in the creeping equations have been obtained by the none line probability analysis with the result of laboratory creeping testing. Finally, the comparison between the theory analysis and the experiment is good.