一种用于粗颗粒盐渍土溶陷性的初步判定方法

粗颗粒盐渍土由于难以取到原状土样,因此,溶陷性评价必须通过现场试验才能解决,而这类特殊土大都位于人迹罕至、干旱缺水、交通不便的戈壁区,现场试验所需的大量淡水、大型机械以及浸水周期都将对工程进度和工程费用造成极大困难.本文依托工程实践,提出在不进行现场试验的基础上,通过分析场地地层结构类型、测定地基土渗透系数、骨架颗粒含...

A preliminary determination method for collapsibility of coarse particle saline soil

It is difficult to get the undisturbed soil samples of coarse-grained saline soil,so the settlement evaluation can only be solved by field tests. However,most of these special soils are located in the Gobi area with few people,drought and water shortage,and inconvenient transportation. The large amount of fresh water,large machinery and immersion period required for field tests will cause great difficulties to the project progress and cost. Based on the engineering practice,a method on the basis of no field test to determine the solubility of coarse-grained saline soil by analyzing the type of site stratum structure,measuring the permeability coefficient of foundation soil,the content of skeleton particles and the content of soluble salt is put forward. Through the validation,the evaluation result is reliable and suitable for popularization.