Forecast of overbreak in opening based on discontinuity surface mapping of mechanics mechanism

WU Ji-min; SUN Shao-rui; WEI Ji-hong

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Forecast of overbreak in opening based on discontinuity surface mapping of mechanics mechanism

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- Forecast of overbreak in opening based on discontinuity surface mapping of mechanics mechanism
- Vol. 25, Issue 8期　刊出日, (2004)
- 作者机构：
  
  河海大学土木工程学院,江苏,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：25 July 2014，
  
  Published：2004
- 稿件说明：
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WU Ji-min, SUN Shao-rui, WEI Ji-hong. Forecast of overbreak in opening based on discontinuity surface mapping of mechanics mechanism[J]. 2004, 25(8期　刊出日).
DOI：

WU Ji-min, SUN Shao-rui, WEI Ji-hong. Forecast of overbreak in opening based on discontinuity surface mapping of mechanics mechanism[J]. 2004, 25(8期　刊出日). DOI：

摘要

概述了结构面的网络模拟技术的基本原理、方法和现状。在充分考虑岩石破裂的力学机理的基础上，结合野外测得的结构面特征参数，提出了一种基于力学机理分析的网络模拟技术，并把该技术运用到地下洞室的超挖预测中。通过某工程实例验证结果的准确性，预测的结果表明：考虑岩石破坏机理的网络模拟技术，能充分反映岩体结构面的几何特征，合理地预测地下洞室中的超挖问题。

Abstract

The basic principal

basic method and general situation of discontinuity surface mapping are summarized. Combined geodesic discontinuity surface parameters in the fields

a mapping method based on mechanics mechanism is put forward on the basis of considering mechanics mechanism of rock fracture. The technology is applied to forecast of overbreak in jointed rock masses openings. The veracity of the result will be tested by an engineering example. The result shows that discontinuity surface mapping considering mechanics mechanism of rock fracture can reflect the configuration of discontinuity and forecast properly overbreak in jointed rock masses openings.

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