岩层与地表移动相似材料模拟试验的误差分析

ERROR ANALYSIS IN SIMILAR MATERIAL SIMULATION TEST OF THE MOVEMENT OF ROCK STRATA AND SURFACE

针对相似材料模拟实验研究的现状和特点,从相似原理、相似材料、边界条件、温度、湿度等方面对岩层与地表移动模拟实验的误差来源进行了分析,将实验误差分成了可控制的、可改正的和不可避免的三类,从理论上研究了压缩下沉和模型边界开裂引起的移动误差分布规律,为观测数据曲线形态异常的改正提供了理论依据,从而有助于改进模拟实验的精度。

Aiming at the characteristics and current situation of model experiment,sources of experimental errors are analyzed from the point of view of equivalent theorem,equivalent material,boundary condition,temperature and humidity. The experimental errors are divided into three types:controllable,amendable and unavoidable. The pattern of movement distribution caused by compression and splitting on the model boundary is studied. Theoretical solutions are suitable to amend the abnormal curve of measured experimental data and helpful to improve the accuracy of model experiment.