Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry

HU Xiu-hong; WU Fa-quan; LIU Hai-yan

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Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry

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- Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry
- Vol. 29, Issue 11, (2008)
- 作者机构：
  
  1. 中国科学院地质与地球物理研究所工程地质力学重点试验室,北京,100029
  2. 山东科技大学地质科学与工程分院,青岛,266510
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB877
- Online First：07 August 2013，
  
  Published：2008
- 稿件说明：
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HU Xiu-hong, WU Fa-quan, LIU Hai-yan. Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry[J]. 2008, 29(11).
DOI：

HU Xiu-hong, WU Fa-quan, LIU Hai-yan. Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry[J]. 2008, 29(11). DOI：

摘要

岩体Ⅰ型结构面应力强度因子KⅠ是岩体的一个重要参数，求取KⅠ的过程需确定结构面几何影响因子。根据修正的Feddersen公式，可以制作出与工程岩体Ⅰ型结构面具有相同的试验岩石模型。根据激光全息干涉法两次曝光法的理论，结合裂纹尖端的应力场方程组、平面光弹性的应力-光定律，建立新的标准化试验方法和算法，可以构建出使用激光全息干涉法2次曝光法测量工程岩体Ⅰ型结构面应力强度因子KⅠ的试验技术路线，该法具有条纹易识别，精度高的优点。

Abstract

The model?Ⅰcrack stress intensity factor KⅠ is an important property of rock mass. Before obtaining KⅠ

we should figure the crack geometric impact factor out. According to “modified Feddersen” formula

we argue experimental model and engineering rock mass could share the same . Based on the double exposing holographic interferometry theory

the equations of crack tip stress field

the photoelastic stress-lit law on plane

the standard processing method

a technical line

which could be used to measure model-Ⅰcrack stress intensity factor KⅠof rock mass

is thought out. The method has some special advantages

such as higher precision and more clearly interference fringes.

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