岩土力学2011，Vol.32Issue(9)：2570-2576,2622,8.
岩石结构面注浆加固抗剪特性试验研究
Study of shear properties of rock structural plane by grouting reinforcement
摘要
Abstract
In order to study the grouting reinforcement effect of structural plane in cracked rock mass of uniaxial compression test, and reveal the essence and mechanisms of grouting reinforcement, the roughness of structural plane in cracked rock mass was measured and studied. The influence of grouting on strength, joint roughness coefficient (JRC) and stiffness of structural plane was analyzed through the shear test of structural plane of rupture rock sample around grouting reinforcement; and the test result was back analyzed by using JRC-JCS mode. The mechanical properties and grouting effect were analyzed through the shear test of sawtooth structural plane modeling around grouting reinforcement. The results show that the JRC of structural plane in artificial cracked rock of the same rock mass is similar and replicable, and the value was about 8-10. Stiffness, peak shear strength, residual strength and slope of upward section of structural plane were significantly improved by grouting reinforcement. The theoretical formula of structural plane stiffness was given by theoretical analysis. The peak shear strength, residual strength and cohesion of structural plane increased markedly with the increase of sawteeth number on structural plane and after grouting reinforcement, but little change in the internal friction angle.关键词
岩石结构面/抗剪强度/力学特性/注浆加固/JRC-JCS模型Key words
rock structural plane/ shear strength/ mechanical properties/ grouting reinforcement/ JRC-JCS mode分类
建筑与水利引用本文复制引用
韩立军,宗义江,韩贵雷,张后全..岩石结构面注浆加固抗剪特性试验研究[J].岩土力学,2011,32(9):2570-2576,2622,8.基金项目
国家自然科学基金项目(No.50774082) （No.50774082）
中国矿业大学青年科研基金项目(No.OB08240). （No.OB08240）
