摘要
在地下隐蔽工程的应急处理中常采用压密注浆方法,注浆的效果主要取决于浆液的影响范围和固结程度.本文以某工程止水加固压密注浆的探地雷达检测为例,在介绍小波分析原理和计算流程的基础上,阐述了利用小波分析去除噪音、增强分辨率,提高雷达图像解释的实际能力和效果,而通过注浆区和未注浆区雷达图像的对比分析,可使实测雷达图像解释结果更加准确.工程实施表明,以注浆分布情况的雷达检测图像及小波分析结果为依据进行补救注浆达到了较好的止水目的,说明探地雷达技术用于检测压密注浆的浆液影响范围是可行的.
The compact grouting method is often used for emergency treatment on underground engineering accidents. Its effect depends on the distributing range （into the soil） and concretion rate of slurry. One example is presented that testing compact grouting by means of GPR for reinforcement and waterproof in one pit engineering. Principle of wavelet analysis and calculation process are introduced. And removal of noise, improvement of resolution, and increase of interpretation for GPR image are expatiated. Then one more accurate interpretation result of GPR image is obtained through image comparison analysis between before and after processing using compact grouting. Water is stopped through remedial grouting according to the distribution of slurry from the GPR image and wavelet analysis results. The example demonstrates that GPR can be used to detect the distribution range of compact grouting.
出处
《地球物理学进展》
CSCD
北大核心
2011年第3期1101-1106,共6页
Progress in Geophysics
基金
浙江省自然科学基金项目(Y506286
Y5100019)
国家自然科学基金项目(40704023)联合资助
关键词
基坑
注浆
雷达
小波分析
foundation pit, compact grouting, ground penetrating radar（GPR）, wavelet analysis
作者简介
葛双成，男，1964年生，浙江浦江人，教授级高级工程师，工学硕士，主要从事地球物理与岩土工程、工程隐患探测与质量检测工作．（E—mail：gesc163@163．com）
