岩土工程学报2016，Vol.38Issue(z2)：245-249,5.DOI:10.11779/CJGE2016S2040
基于钻孔图像的孔壁岩体完整性计算及在裂隙岩体灌浆效果评价中的应用
Calculation of borehole wall rock integrity based on borehole images and its application in evaluation of grouting effect in fractured rock mass
韩增强 1王川婴 1周济芳 2伍宇腾 2胡胜 1汪进超1
作者信息
- 1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北 武汉 430071
- 2. 雅砻江流域水电开发有限公司，四川 成都 610051
- 折叠
摘要
Abstract
Grouting is the most commonly used technique to improve the quality of fractured rock mass. According to the single property of grouting effect evaluation, the change of RMDI of rock mass integrity index before and after grouting is studied based on the calculation of rock mass integrity in borehole images. The calculation of fracture parameters such as occurrence, width in the borehole images is described. The characteristics of the fracture are divided into three types, which are not filling, half filling and filling by image recognition. Based on the exponential density function of the integrity of rock mass, the formula for calculating the integrity index of rock mass is established. The corresponding relationship between RMDI and rock mass integrity is summarized. Statistical analysis is made on the change of RMDI before and after grouting. The results show that the integrity of rock mass has obvious improvement through grouting, and the grouting effect is obvious. Finally, a comprehensive comparison is made on the results of the pore wall images and the water permeability of some typical sections. The fractures are well filled, and it is further verified that the effect of the grouting treatment is obvious. It is feasible to evaluate the grouting effect through borehole images and borehole wall integrity index, which can make up the single property and limitation of the evaluation basis of pressure water test results.关键词
灌浆效果/岩体完整性/RMDI/钻孔图像/裂隙岩体Key words
grouting effect/rock mass integrity/RMDI/borehole image/fractured rock mass分类
建筑与水利引用本文复制引用
韩增强,王川婴,周济芳,伍宇腾,胡胜,汪进超..基于钻孔图像的孔壁岩体完整性计算及在裂隙岩体灌浆效果评价中的应用[J].岩土工程学报,2016,38(z2):245-249,5.
