摘要
花岗岩、混合岩残积层、全风化层及强风化层在我国很多地区有大面积分布,该地层具有"未扰动前比较致密,承载力较高,扰动后强度迅速降低、软化、崩解、自稳性差"的特性;同时部分残积层中存在"球状风化体";其特性对地铁、市政工程影响较大,处理措施比较特殊。文章对全国多个地区花岗岩、混合岩残积层物理力学特性及对地铁、市政工程的影响进行了比较全面的统计和分析,针对实施不同工法的工程给出了详细的处理措施,对类似工程有一定的参考和借鉴作用。
Residural, completely and strongly weatherd granite and mixed rock layers are distributed in large areas all over China. This kind of stratum is characterized by poor self-stability and is dense and high in bearing capacity before being disturbed, but gets weakened quickly, softening and crumbling after having been disturbed; meanwhile, there is a ＂spherical weathering body＂ in part of the eluvium. As these issues have a great effect on metro and municipal works, special treatment measures should be taken. mechanical characteristics of granite and mixed rock eluvium, geology on metro and municipal works. Additionally, detailed different methods This paper discusses an analysis of the physical and and a description is given regarding the effects of this treatment measures are given for works constructed by
出处
《现代隧道技术》
EI
北大核心
2013年第1期29-33,39,共6页
Modern Tunnelling Technology
关键词
混合岩残积层
地铁工程
明挖基坑
矿山法
盾构法
Mixed rock eluvium
Metro
Open-cut foundation pit
Tunnel by drill and blast method
Shield tunnel
