河谷深厚覆盖层工程地质特性及其评价方法

STUDY ON ENGINEERING GEOLOGIC CHARACTERISTIC OF THE DEEP ALLUVIUM IN VALLEYS AND ITS EVALUATION METHODS

河谷深厚覆盖层广泛分布于我国大江大河中，其研究对加快我国水利水电工程建设具有重大意义。文中以川西河流为例，论述河谷深厚覆盖层的基本特征及工程地质特性，并重点论述河谷深厚覆盖层的承载力、变形、强度参数及渗透特性的评价方法。研究指出，密实度及颗粒级配组成，是控制河谷深厚覆盖层工程地质特性的主要因素。

It is important to study the deep alluvium for the development of water power construction in our country. The deep alluvium in the valleys in west sichuan is taken as a example and its engineering geologic characteristic, especially its bearing capacity, deformation beaviour, the parameters of strength, the behaviour of seepage and their engineering geologic evaluation are studied in this paper. It is pointedout that the degree of compaction and grain composition of the deep alluvium are main factors to control its engineering geologic characteristic. The correlation equation for evaluation is suggested in this paper.