厚层杂填土场地深基坑工程关键技术研究  

Research on Key Technologies of Deep Foundation Pit Engineering in Sites with Thick Layer of Miscellaneous Fill Soil

作　　者：巨建勋 张学臣 Ju Jianxun;Zhang Xuechen(Hunan Expressway Design and Consulting Research Institute Co.,Ltd.,Changsha,410005)

机构地区：[1]湖南高速设计咨询研究院有限公司,长沙410005

出　　处：《建设科技》2025年第5期84-87,共4页Construction Science and Technology

摘　　要：新近深厚杂填土场地的深基坑工程是一项难题,文章针对此类场地的深基坑支护设计和施工进行了研究。以某建筑物的深基坑工程为例,提出了先对杂填土进行袖阀管注浆加固,然后进行放坡,最后采用钢花管土钉墙加固的支护方案。本文中提供的设计和施工方案在实际工程中取得了实效,为新近深厚杂填土地区深基坑支护设计和施工提供了有益的技术支持和参考。The deep foundation pit engineering in newly formed and thickly deposited miscellaneous fill soil sites poses a significant challenge.This paper conducts a study on the support design and construction of deep foundation pits in such sites.Taking the deep foundation pit project of a certain building as an example,a support scheme is proposed.Firstly,the miscellaneous fill soil is grouted and reinforced by sleeve valve pipes.Then,slope excavation is carried out.Finally,the steel pipe soil nailing wall is used for reinforcement.The design and construction scheme provided in this paper has achieved success in the actual project,offering beneficial technical support and reference for the support design and construction of deep foundation pits in areas with newly formed and thick miscellaneous fill soil.It effectively addresses the difficulties in deep foundation pit engineering in such special sites,ensuring the safety and stability of the foundation pit during construction.

关 键 词：杂填土 袖阀管注浆 钢管土钉 基坑工程 

分 类 号：TU7[建筑科学—建筑技术科学]