Identification of initial stress field parameters in the rock mass with the stochastic method

Li Shouju; Liu Yingxi; Wang Denggang; Liu Yujing

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Identification of initial stress field parameters in the rock mass with the stochastic method

更新时间：2026-06-25

- Identification of initial stress field parameters in the rock mass with the stochastic method
- Vol. 21, Issue 2, (2000)
- 作者机构：
  
  大连理工大学工程力学系 ,辽宁大连 116023) (长春煤炭干部管理学院,吉林,长春,130012
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV223.1
- Online First：12 December 2016，
  
  Published：2000
- 稿件说明：
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Li Shouju, Liu Yingxi, Wang Denggang, et al. Identification of initial stress field parameters in the rock mass with the stochastic method[J]. 2000, 21(2).
DOI：

Li Shouju, Liu Yingxi, Wang Denggang, et al. Identification of initial stress field parameters in the rock mass with the stochastic method[J]. 2000, 21(2). DOI：

摘要

利用地下隧道开挖后变形收敛观测数据

采用最小二乘法研究了岩体初始应力场识别问题。考虑了变形观测的随机性

建立了岩体初始应力场参数识别的随机方法

研究了变形观测的随机特性对识别结果的影响。待识别参数对目标函数的灵敏度越低

参数识别结果的标准差就越大

其可识别性越差

Abstract

By means of the least square method

the initial stress field parameters are identified according to the measured data of transformation of the rock when the underground tunnel is excavated. Considering the stochastic characteristic

a stochastic method to identify the initial stress parameters in rock mass is established in this paper. The affection of the stochastic characteristic of the transformation measurement is studied as well. The numerical results show that the lower the sensibility of the objective function to the identified parameters

the larger the standard deviation of the identified results

and the worse the identifiable characteristic of the parameter.

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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

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