简介用换填法处理深挖土质路堑基底

Dealing with Soil Deep-Cut Cutting Basis by Changing and Filling Method

山岭重丘区的高速公路在平纵面设计时为使其达到相应的设计等级 ,难以避免高填或深挖现象。对于深挖的土质路堑 ,其路床往往由于地下水或毛细水的影响 ,使得其弯沉和压实度等技术指标难以达到设计和规范的要求 ,换填法是此类路堑常用的方法之一。以京珠南高速公路深挖路堑为例 ,简单介绍一种快捷的换填法。

High-fill or deep-cut is difficult to avoid during layout & section design of freeways in mountainous regions in order to reach corresponding design grade. For deep-cut soil cutting, because of the influence of groundwater or capillary water, the technical indices of roadbed such as bend sinking and compactness are difficult to meet the requirements of design and codes. The method of changing and filling is commonly used for this kind of cutting. In combination with construction example of a deep-cut cutting of Jing-Zhu Expressway, a quick changing and filling method is briefly introduced.