超深钻孔灌注桩施工时对近距离隧道结构的技术保护措施  

A Discussion of Technical Protection Measures to Adjacent Tunnel Structure during the Construction of Super-deep Bored Pile

作　　者：王金良 

机构地区：[1]上海市第二市政工程有限公司,上海200065

出　　处：《中国市政工程》2014年第2期50-52,109,共3页China Municipal Engineering

摘　　要：通过工程实例,介绍超深钻孔灌注桩施工时对近距离大直径隧道结构采取的技术保护措施。这些措施包括钻孔灌注桩施工质量控制、施工监测、隧道内同步注浆、预应力临时支护、灌注桩膨润土护壁等。According to some engineering cases, technical protection measures to adjacent large diameter tunnel structure during the construction of super-deep bored pile are put forward in this paper. Several key points are introduced including bored pile construction quality control, construction monitoring, tunnel synchronous grouting, prestressed temporary support, and fi lling pile bentonite retaining wall, etc.

关 键 词：超深 钻孔灌注桩 大直径隧道 监测 支护 注浆 

分 类 号：TU473.14[建筑科学—结构工程]