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位移反分析法是近几年发展起来的一种新的确定岩体参数的方法。与常规的地应力量测和弹性模量量测等方法相比,它具有很多优点:可靠、方便、经济等。所以,近年来许多工程师和学者越来越重视这种方法,并逐步将它应用于工程实践。本文将讨论弹性问题位移反分析、弹塑性问题位移反分析、粘弹性问题位移反分析和快速的图解反分析等的原理和方法。为了说明其应用,我们还举了两个工程实例。另外,作者还指出,采用位移反分析确定岩体参数时,工程师们应全面考虑工程设计的目的、地质条件、施工方法、待分析参数的选择、位移量测方法和可行的反分析法等问题。
Displacement back analysis method is a new method to determine rock parameters developed in recent years. Compared with conventional ground stress measurements and elastic modulus measurements, it has many advantages: reliability, convenience, economy, and so on. Therefore, in recent years many engineers and scholars have increasingly attached importance to this method and gradually applied it to engineering practice. This article will discuss the principles and methods of displacement back analysis of elasticity problems, displacement back analysis of elastic-plastic problems, displacement back analysis of viscoelastic problems, and rapid graphical back analysis. To illustrate its application, we also cited two project examples. In addition, the authors also pointed out that when using displacement back analysis to determine rock parameters, engineers should fully consider the objectives of engineering design, geological conditions, construction methods, selection of parameters to be analyzed, displacement measurement methods, and feasible back analysis methods. .