摘要
船闸工程中的深基坑开挖,高水头作用下的基坑渗透稳定是涉及基坑稳定安全的重要因素,选择合适的防渗技术尤为重要。宝应船闸扩容工程紧邻京杭运河,基坑最大开挖深度16m,基坑四周采用上部小直径搅拌桩与下部高压旋喷桩的组合防渗墙施工技术,克服了搅拌桩10m以下水泥含量迅速衰减及防渗墙体下部开叉、错孔等缺陷,开挖表明该法防渗效果明显。
During the deep excavation in ship lock engineering,the stability of seepage under high water head is an important factor relates to the safety.The choice of anti-seepage technology is particularly important.With Baoying Lock closing to the Grand Canal and the maximum 16m depth of excavation,an anti-seepage technology by combination of small diameter mixing pile and jet grouting pile is applied to the foundation pit project.Some problems,such as cross hole,cement content decreasing below 10m depth,are avoided effectively.The result shows that the method is reliable,which can obviously improve the effect of seepage control.
出处
《交通科技》
2013年第4期147-149,共3页
Transportation Science & Technology
关键词
深基坑
渗透稳定
船闸
组合防渗
deep foundation pit
seepage stability
lock
combination of seepage control
