三维全场应力应变测试系统在开采沉陷模拟实验中的应用

The Application of 3D Full-Field Stress-Strain Test System in Mining Subsidence Simulation Experiment

摘要: 相似材料模拟实验是矿山岩层移动规律研究的重要实验手段。针对研究过程中采用单点位移测量不能完全反应采空区上方应力应变的缺点，采用三维全场应变测试系统进行实验观测。以山区和平地地形的地质采矿条件为原型，设计相似材料模拟实验。通过实验，获得了采空区上方的应力应变云图以及位移云图。研究表明，三维全场应变测试系统在开采沉陷模拟实验中效果明显，对类似科学研究有重要借鉴意义。

Abstract: The simulation experiment of equivalent materials is an important experimental method to study the rock strata movement. In view of the shortcoming that the single point displacement meas-urement cannot fully explain the stress and strain above the goaf in the research process, the three-dimensional full-field strain measurement system is adopted to conduct experimental ob-servation. Based on the geological and mining conditions of mountainous area and peaceful terrain, the simulation experiment of similar materials was designed. The stress-strain and displacement cloud maps above the goaf are obtained by experiments. The results show that the 3D full-field strain test system is effective in the simulation experiment of mining subsidence and has important reference significance for similar scientific research.