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对巷道村砌压力及采场位移的现场观测表明,岩石大多具有流变的特性,因此计算与时间有关的位移和压力乃是采矿工程的一个重要课题。本文提出一个计算线性粘弹介质中与时间有关的位移和应力的数值方法。对于线性粘弹介质可以用Laplace变换将对应愿理用于相应的弹性问题的解,从而由逆变换可直接得到与时间有关的解;至于问题的弹性解则可以快速和准确地用边界单元法求得。边界单元法有好几种,各有最适用的范围,本文中所用的是不连续位移法,并将其推广到用于上下两个不同性质半平面相连接的区域,各个半平面可以是弹性的或粘弹性的。
The on-site observations of the tunneling pressures and stope displacements in roadway villages show that most of the rocks have rheological properties, so calculating time-dependent displacements and pressures is an important issue in mining engineering. This paper presents a numerical method for calculating time-dependent displacements and stresses in linear viscoelastic media. For the linear viscoelastic medium, the Laplace transform can be used to apply the corresponding desirability to the solution of the corresponding elastic problem, so that the time-dependent solution can be directly obtained from the inverse transform; and the elastic solution to the problem can be quickly and accurately used the boundary element method. Seek. There are several kinds of boundary element methods, each with the most suitable range. The discontinuous displacement method is used in this paper and it is extended to the area where two different natures of the half-planes are connected. Each half-plane can be elastic. Or viscoelastic.