深部地下工程大变形影响因素及权重分析

Influence Factors and Weight Analysis of Large Deformation in Deep Underground Engineering

深部地下工程大变形灾害严重影响施工和运营安全,因此分析深部地下工程大变形灾害的影响因素、确定各个因素权重尤为重要。本文基于大变形灾变机理,对大变形影响因素进行分析总结,并将影响因素分为3个一级因素和6个二级因素;通过层次分析法确定判断矩阵形成各个因素的权重结果,结果显示一级因素岩体质量条件占比最大,二级因素围岩岩性条件占比最大。研究成果可为类似工程施工提供一定参考。

The large deformation disaster of deep underground engineering seriously affects the safety of construction and operation,so it is particularly important to analyze the influencing factors of large deformation disaster of deep underground engineering and determine the weight of each factor.Based on the understanding of catastrophe mechanism of large deformation,this paper summarizes and analyzes the influence factors of large deformation by referring to the discussion of experts and scholars.The influence factors were further divided into three first-level factors and six second-level factors,and the judgment matrix was determined by analytic hierarchy process to form the weight results of each factor.The results showed that the first-level factors accounted for the largest proportion of rock mass quality conditions,and the second-level factors accounted for the largest proportion of rock lithology conditions.The weight determination results can provide reference for engineering construction.