揚巴污水提升泵站壓密注漿施工方案.doc

一、    前言Preface
污水提升泵站壓密注漿主要針對其基坑底板下部的約1.8m厚的粉土，因其底板呈階梯部，部份土體滑動，造成部份底板與其下部粉土的分離，而形成空洞，目前通過現場勘察，因破壞處為16×3×1.8m。因而要求采用注漿方式進行土體加固。This plan is mainly aimed at about 1.8m THK powder soil in the bottom slab of foundation pit. As the bottom slab is in a step and part of the soil is slided, some slabs are separated from the powder soil. So the hollows turn up. After the site investigation, as the broken area is 16*3*1.8m, method of grouting should be adopted for the soil strengthening.  
二、    壓密注漿方法Methodology for Compaction and Grouting
該工程基坑底板現已澆注成功，依據現場的破壞程度及以往的施工經驗，先通過人工方式在底板開孔，然后依據水灰比0.5~0.6的方案進行攪拌水泥漿，再將攪拌均勻的水泥漿用機械方式輸入孔洞中，已達到加固地基土為目的。The bottom slab in foundation pit has been successfully placed. According to the damage degree and our construction experience, firstly we will make hole by manpower, secondly mix cement mortar in a water cement ratio of 0.5~0.6. Then cement mortar will be conveyed into holes by machine to meet the requirement.

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