旋挖钻孔灌注桩穿越高水位、杂填土层防塌孔施工技术研究  

Research on Anti-collapse Hole Construction Technology of Rotary Drilling Bored Pile Crossing High Water Level and Miscellaneous Fill Layer

作　　者：王敦武 WANG Dunwu(China Railway 14th Bureau Group Co.,Ltd.,Jinan 250100,Shandong,China)

机构地区：[1]中铁十四局集团有限公司,山东济南250100

出　　处：《工程技术研究》2023年第2期49-51,共3页Engineering and Technological Research

摘　　要：在高地下水位,且土质大多为杂填土的地质条件下,采用传统的泥浆护壁和埋设长护筒技术进行旋挖钻孔灌注桩施工,常常会出现一些困难棘手的问题,特别是塌孔现象屡见不鲜。为了切实解决塌孔现象,保证桩基施工质量,文章对旋挖钻孔灌注桩在穿越高水位、杂填土层施工过程中的实际问题进行探究,形成了一套行之有效的综合防塌孔施工技术,以供参考。Under the geological conditions with high groundwater level and much miscellaneous fill, some difficult and thorny problems often occur in the construction of rotary drilling bored piles by using traditional mud wall protection and long casing technology, especially the phenomenon of hole collapse. In order to effectively solve the phenomenon of hole collapse and ensure the quality of pile foundation construction, this paper explores the practical problems of rotary drilling bored pile in the construction process of crossing high water level and miscellaneous fill layer, and forms a set of effective comprehensive anti-collapse hole construction technology for reference.

关 键 词：旋挖灌注桩 塌孔 杂填土层 泥浆护壁 长护筒 

分 类 号：TU753.3[建筑科学—建筑技术科学]