Study on mechanic parameters of bolted fractured rock mass under unloading

DENG Hua-feng; LI Jian-lin; WANG Le-hua

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Study on mechanic parameters of bolted fractured rock mass under unloading

更新时间：2026-06-25

- Study on mechanic parameters of bolted fractured rock mass under unloading
- Vol. 29, Issue 4, (2008)
- 作者机构：
  
  1. 三峡大学土木水电学院,宜昌,443002
  2. 武汉大学水利水电学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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DENG Hua-feng, LI Jian-lin, WANG Le-hua. Study on mechanic parameters of bolted fractured rock mass under unloading[J]. 2008, 29(4).
DOI：

DENG Hua-feng, LI Jian-lin, WANG Le-hua. Study on mechanic parameters of bolted fractured rock mass under unloading[J]. 2008, 29(4). DOI：

摘要

加锚岩体的力学参数确定一直是岩土工程中的一个重要和困难的问题，在考虑卸荷的情况下，对边坡岩体的分离块体经系统锚杆加固后的抗压强度、泊松比、弹性模量及c，?值的变化规律进行了数值模拟计算和分析，并考虑了不同的加卸载路径、锚固角和岩体强度对加固效果的影响，计算结果表明，在分析卸荷岩体边坡加固时，必须考虑裂隙岩体卸荷历史的影响。最后用试验结果验证了等效数值计算方法的正确性。

Abstract

How to decide the parameters of bolted rock mass is an important and complicated problem in geotechnical engineering. Taking unloading into account

the variation regularity of compression strength

Poisson′s ratio

elastic modulus

c and friction angle ? values were studied and simulated by computer; and different loading-unloading paths

anchoring angle

strength of rock mass were taken into account. The computed results show that the influence of unloading process before reinforcement should not be neglected. Finally

some experimental data were used to testify the above-mentioned analysis.

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