论文部分内容阅读
地下矿物开采过程中,地层中的原始地应力场遭到破坏,造成覆岩应力重新分布,进而引起了覆岩的移动与破断形成了裂隙场。基于相似材料模拟试验得出覆岩裂隙演化的一般规律,即裂隙场的物理特征;利用有限元数值模拟试验,研究在煤层动态开采过程中,上覆岩体的应力分布状态,并联系裂隙场的物理特征作出了进一步的解释。
During the process of underground mineral exploitation, the original ground stress field in the strata is destroyed, which leads to the stress redistribution in overlying strata, which in turn causes the overlying strata to move and rupture and form the crack field. Based on the simulations of similar materials, the general law of the evolution of overburden rock fissures is obtained, that is, the physical characteristics of the fissure field. The stress distribution of the overlying rock mass during the dynamic mining process is studied by finite element numerical simulation. The physical characteristics of a further explanation.