- 目录
- 防水屋面材料
- 首页
饱和砂层渗透注浆模拟实验及应用研究
作者：崔莹1，韩德强1，杨帅2，赵超2，王新2
（1.北京东方雨虹防水技术股份有限公司，北京 100044；2.中科建通工程技术有限公司，北京 100044）
摘要：为研究饱和砂层渗透注浆的影响因素，通过注浆模型试验，研究了注浆材料、注浆材料凝胶时间、排水条件以及被注浆土体对注浆效果的影响。结果显示，凝胶时间大于注浆时间能形成较为均匀的渗透扩散；排水条件对渗透效果作用明显，排水时形成浆液可渗透扩散，且趋向排水一侧优先扩散；在不含黏性土的砂层中注浆可形成较为均匀的球形扩散体；在含黏性土的砂层中注浆，因渗透困难而形成劈裂浆脉。
关键词：注浆实验；渗透注浆；劈裂浆脉
中图分类号：TU472.5 文献标识码：A 文章编号：1001-702X（2022）01-0133-04
Simulation experiment and application reseach of permeation grouting in saturated sand layer
CUI Ying1，HAN Deqiang1，YANG Shuai2，ZHAO Chao2，WANG Xin2
（1.Beijing Oriental Yuhong Waterproof Technology Co. Ltd.，Beijing 100044，China；
2.Zhong Ke Jian Tong Engineering Technology Co. Ltd.，Beijing 100044，China）
Abstract：In order to study the influencing factors of permeable grouting in saturated sand layer，the effects of grouting materials，gel time of grouting materials，drainage method and injected soil on the grouting effect were studied through grouting model test. The results show that the gel time should be longer than the grouting time to form more uniform infiltration diffusion. Drainage conditions have an obvious effect on infiltration effect. Grouting materials can be permeated and diffused and tends to be preferentially diffused on the drainage side. In the sand without clay，uniform spherical solid sand body can be formed by grouting. When there is clay in the sand, it is difficult for the grout to penetrate and it will form split grout veins.
Key words：grouting experiment，penetration grouting，split grout veins