长春黄土状土的水文、工程地质特性及降水方案的确定

在镜下对长春黄土状土的微观结构进行研究，发现第三层粉质粘土含水机制在于土中具有纵横交织的空洞和管道，地下水赋存于其中；第二层棕红色粉质粘土和粘土的崩解性在于该层土具有网状裂隙，卸荷后遇水崩解，在此基础上提出基坑降水的设计方案。

CHARACTERISTIC OF MICROSTRUCTURE,ENGINEERING GEOLOGY AND HYDROGEOLOGY OF LOESSIAL SOIL IN CHANGCHUN

This paper deals with the problem in the engineering practice,based onthe study of microstructure of loessial soil by microscope. The result indicates that thewater-bearing mechanism of silt clay in the third layer is owing to the void and pipage inthe soil. The crumbling property of brown-red silt clay of second layers is due to itsnetted crack which is crumbed down after meeting with water. In the light of knowledgementioned above,a design of pit lowering of water is put forward.