摘要
湿陷性黄土地基的沉降是导致建筑物破坏的一个重要原因，而要进行基础处理的费用一般较高。为尽可能准确地进行湿陷性评价并确定基础处理范围，本文以《湿陷性黄土地区建筑规范》为依据，在工程地质勘探及土工试验资料的基础上，通过对湿陷系数、自重湿陷量、总湿陷量等基本参数的计算，利用综合成图法，在实测的基线图上绘制出参数曲线，以此方法可直观地展示出湿陷性黄土基础的工程地质情况，并进行评价，具有较高的精度，可为地基处理设计及下阶段的详细工程地质勘探提出建议。本文列举的是一大型供水管道在湿陷性黄土地基处理设计中的湿陷性评价实例。
The settlement of collaosible loess ground is an important cause for the damaging of building and the cost of ground treatment is generally quile high． In order to assess the collapsibility and establish the scope of ground treatment as accurately as possible， in accordance with “Norms for Construction in Collapsible Loess Areas” and on the basis of engineering geological investigations and geotechnical testing data ，the author of this article draws up parameter curves ontheactual baseline drawings by means of comprehensive mapping and through calculation of the collapsibility coefficient，the amuont of self－gravity collapsibility，the total amount of collapsibility and other basic parameters．This method can directly show and assess the engineering geology of the collapsible loess ground．It is of high accuracy and can provide suggestions to the design of ground treatment and the detailed engineering gelogical investigations of the next stage． The example cited in this article is a true case of collapsibility assessment in the design of callapsible loess ground treatment for a large－scale water supply pipeline system．
