摘要
目前隧道围岩主要通过建立本构模型,利用理想化力学模型对其变形进行分析与预测。但影响围岩变形的变量较多,存在一定随机性,其定量分析和预测结果准确性依赖于本构模型与实际围岩匹配程度,工程实用性较差。围岩量测数据是在各种变量作用下围岩变形行为最为宏观和客观的表现,其变形因素和结果应满足一定的概率分布规律。本文以张吉怀铁路新华山隧道为背景,介绍通过既有量测数据的分布频率预测围岩变形原理及方法,从概率角度对围岩变形行为进行分析,以概率形式预测变形趋势,实用性较强。
At present,the tunnel surrounding rock mainly relies on the establishment of the constitutive model of surrounding rock and the use of the idealized mechanical model to analyze and predict its deformation.However,there are many variables that affect the deformation of surrounding rock,and there is a certain randomness.The accuracy of its quantitative analysis and prediction results depends on the matching degree between the constitutive model and the actual surrounding rock,and the engineering practicability is poor.The measured data of surrounding rock is the most macroscopic and objective manifestation of the deformation behavior of surrounding rock under the action of various variables,and its deformation factors and results should meet certain probability distribution rules.Based on the Xinhuashan Tunnel of Zhangji-Huaihua Railway,this paper introduces the principle and method of predicting the deformation of surrounding rock by the distribution frequency of existing measured data,analyzes the deformation behavior of surrounding rock from the perspective of probability,and predicts the deformation behavior in the form of probability,which is highly practical.
作者
张逆进
姚胜泉
ZHANG Nijin;YAO Shengquan(The 7^(th)Engineering of China Railway 12^(th) Bureau Group Co.Ltd.,Changsha Hunan 410004,China)
出处
《铁道建筑技术》
2023年第4期126-129,135,共5页
Railway Construction Technology
基金
中国铁建股份有限公司科技研究开发计划项目(21-B03)。
关键词
量测数据
频率分布
隧道变形
分析预测
measured data
frequency distribution
tunnel deformation
analysis and prediction
