膜袋灌浆法在深基坑施工中的应用  

Application of Membrane Grouting in Deep Foundation Pit Construction

作　　者：周建 何英建 潘春强 ZHOU Jian;HE Yingjian;PAN Chunqiang(Sinohydro Bureau 7 Co.,Ltd.,Chengdu Sichuan 610213)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都610213

出　　处：《四川水力发电》2024年第5期42-44,共3页Sichuan Hydropower

摘　　要：硬梁包水电站首部枢纽生态电站底板建基面岩体破碎、裂隙发育,建基面大面积出现了不同程度的涌水。由于建基面涌水极易造成边坡失稳、地基承载力下降等后果,不仅影响生态电站厂房底板混凝土的浇筑质量,而且严重影响整个工程的施工进度。阐述了在硬梁包水电站首部枢纽生态电站厂房基坑区域进行的膜袋灌浆施工过程,施工效果证明:膜袋灌浆可以有效地截断地下水向基坑渗漏,同时起到加固地基的作用,保证了后续工程的施工进度。The rock mass of the foundation surface of the ecological power station of the Yingliangbao Hydropower Project is fractured,with developed cracks,and there are varying degrees of water inrush on the large area of the foundation surface.The surge of water on the foundation surface can easily cause slope instability and decrease in foundation bearing capacity,which not only affects the quality of concrete pouring for the bottom plate of the ecological power plant,but also seriously affects the construction progress of the entire project.Through the construction of membrane grouting in the ecological plant foundation pit area of the first hub of the Yingliangbao Hydropower Project,the construction effect has proven that membrane grouting can effectively cut off groundwater leakage into the foundation pit,while also playing a role in foundation reinforcement,ensuring the subsequent construction progress.

关 键 词：深基坑 涌水 膜袋灌浆 地基加固 硬梁包水电站 

分 类 号：TV7[水利工程—水利水电工程] TV52TV551.4