万家寨引黄工程北干线输水管基湿陷性特征研究

山西省万家寨引黄工程北干线输水管线大部分地段通过黄土地区，黄土地基的湿陷性已成为主要的工程地质问题。在湿陷性黄土地区进行工程建设，应查明黄土的工程特性，湿陷性质、厚度、成因及其分布变化，确定场地湿陷类型和地基湿陷等级，并按工程设计的特性需求，进行地基处理等研究是十分必要的。

Study on collapsible characteristics of foundation for the North Trunk Line of Wanjiazhai Yellow River Delivery Project

Most part of the North Trunk Line of Wanjiazhai Yellow River Delivery Project has to pass through the zone of collapsible loess, so the collapsibility of the loess foundation becomes the main engineering geological problem therein. Under this circumstance, it is necessary to find out the engineering characteristics, collapsible features and thickness, cause of the formation and the distribution of the loess, so as to determine the collapsible types of the site and the collapsible classification of the foundation and then to carry out the the foundation treatment in accordance with the requirement of the project design.