论文部分内容阅读
为解决岩质地基、边坡与地下岩体工程扰动与失稳、煤岩扰动与突出等实际问题,需要对岩体工程受扰动后的响应规律与特点进行深入研究。基于扰动状态概念理论,通过定义煤岩类准脆性岩石材料的相对完整状态、完全调整状态,从理论上给出了扰动函数公式,建立了煤岩类准脆性岩石扰动本构模型,并给出了模型参数解析式。通过煤岩和砂岩三轴压缩试验,所建本构模型与试验结果较为吻合,证明所建本构模型可以确定煤岩等准脆性岩石在扰动状态结构微调整过程中,任一状态下的扰动函数和应力-应变情况,为研究煤岩类准脆性工程材料受扰动后的力学特性提供了一种新的途径。
In order to solve the practical problems such as disturbance and instability of rock mass foundation, slope and underground rock engineering, perturbation and prominence of coal rock, it is necessary to conduct an in-depth study on the response rules and characteristics of the rock mass disturbance. Based on the concept of disturbance state theory, the perturbation function formula is given theoretically and the perturbation constitutive model of quasi-brittle rock in coal and rock is established by defining the relative intact state of quasi-brittle rock material of coal and rock and completely adjusting the state. The model parameters analytic. Through the triaxial compression tests of coal and sandstone, the constitutive model is in good agreement with the experimental results, which proves that the constitutive model can be used to confirm the perturbation of any quasi-fragile rock, such as coal and rock, during the fine adjustment of disturbance structure Function and stress-strain conditions provide a new way to study the mechanical properties of quasi-brittle engineering materials after perturbation.