工程施工路径相关性的数值仿真

Computer Simulation of Path Correlation in Engineering Construction

本文将损伤理论与时变力学耦联,形成用于模似施工的损伤时变力学方法,文中推导了基本方程和数值化算式。利用时变分析法对某地下煤层开采过程进行计算机仿真分析,给出了三种不同路径下开采引起地表沉陷的时空演化图,并进行对比分析。对体现出的位移、损伤与施工路径相关现象进行了探讨,并定量给出损伤时变分析下不同开采路径造成的最终力学状态的差别。本文中损伤时变力学方法为施工过程分析提供了一种新方法与手段。

By combining damage theory and time varying mechanics, the variable damage parameter which correlated with variational course was introduced, and the damage time varying analysis method was formed. The basic equations in incremental representation and numerical analysis process were derived. The time space evolution curve of surface subsidence under three mining sequence were given by the computer simulation of one underground coal bed. The path correlation phenomenon of deformation and the damage distribution under different mining sequences were studied, and the difference of ultimate mechanics state was given quantitatively. The damage time varying analysis process provides a new method in the analysis of engineering construction.