湿陷性黄土隧道工程技术及工程处理方法

Collapsible Loess Tunnel Engineering Technology and Engineering Treatment

湿陷性黄土作为特殊土的一类广泛存在于我国西北部,其可分为自重式湿陷性黄土和非自重式湿陷性黄土。特殊的颗粒结构组成使得其拥有高强度、低压缩性,而浸水后土体结构容易破坏,产生湿陷性变形。工民建的快速发展建设,湿陷性黄土地基处理已经初步做到有章可循,然而黄土隧道的施工增多,深度的加深,跨度的增长,黄土隧道施工不得不面对更多新的问题。现有的规范、规定已经不能很好的适用,因此,需要更多研究湿陷性黄土隧道施工的各方面问题,改进施工方法,以此提高施工速度,降低施工成本。

the collapsible loess as a kind of special soil widely exists in northwest China,it can be divided into weight of collapsible loess and the weight of collapsible loess.Special particle structure makes it have high strength,low compressibility,after flooding soil structure damage easily,collapsibility produce deformation.The rapid development of civil construction,the collapsible loess foundation treatment has been preliminary do rules-based,increase in the number of construction in loess tunnel,however,the depth of deepening,the growth of the span,the loess tunnel construction have to face more new problems.Existing,norms have not very good,so need more research of collapsible loess tunnel construction parties,improving construction methods,to improve the construction speed,reduce the construction cost.