老旧城区改造工程基坑施工新技术研究与应用

Research and Application of New Technology for Foundation Excavation in the Old Urban Area Reconstruction Project

太原老旧城区某改扩建工程周边环境及地质条件复杂,给基坑施工带来一定困难。通过科技创新及成果应用,成功解决施工难题,并总结实用性施工技术。主要对基坑侧壁止水技术、基坑内局部降水技术、桩周边软弱地质孔壁加固技术等进行阐述,相关施工技术创新性强,可在保证施工质量的同时缩短工期,取得良好的经济效益。

The reconstruction and expansion project in the old urban area of Taiyuan has extremely complex surrounding environment and geological conditions,which brings certain difficulties to the construction of foundation excavation.Through scientific and technological innovation and application of results successfully solves construction difficulties.This paper summarizes practical construction techniques and mainly describes the the side wall water stop technology,local precipitation technology in the foundation excavation and the weak geological hole wall reinforcement technology around the piles.These relevant construction technologies are innovative and can shorten the construction period while ensuring the construction quality,which can achieve good economic benefits.