摘要
以宜昌市污水处理厂洋坝泵房基坑边坡支护设计与施工为例，介绍在软土地质条件下，如何依据工程地质条件、水文地质条件、环境及边坡稳定性计算参数确定支护方案。该区基坑支护方案确定为放坡喷锚支护结构．即采用放坡开挖，其高宽比为1：0．5，坡面采用灌浆锚杆挂网喷射砼进行封闭止水处理。在超深基坑施工中采用的喷锚支护及坑底降水等技术措施得当，支护效果良好。
To take the Yichang City Wastewater Treatment Plant Yangba pump room foundation pit slope supporting design and construction as an example, introduced how according to engineering geologieal, hydrogeological conditions, environment and slope stability calculated parameters determine supporting scheme under soft soil geological condition. The foundation pit supporting scheme uses free slope bolting and shoterete lining structure that is free slope excavation with high-wide ratio 1：0.5, slope face bolting and shotcrete lining water sealing treatment. In the extra-deep foundation pit the technical measures of bolting and shoterete lining as well as pit bottom water lowering are appropriate, and good effect obtained.
出处
《中国煤田地质》
2007年第A01期92-95,共4页
Coal Geology of China
关键词
基坑支护
土钉
喷锚
注浆
降水
foundation pit supporting
earth nail
bolting and shotcrete
grouting
water lowering
