边坡土性参数试验研究

Experimental Study on Soil Parameters of Slope

依托赣州的滑坡防治工程,取样30组,开展室内含水率试验、比重试验、密度试验、抗剪强度试验,结果表明:滑坡体表层的含水率波动范围较大,多数分布在12%~16%,最小可为8.27%,最大可为20.26%;随着深度的增加,土体的含水率总体上呈现增加的趋势,其多数分布在12%~28%,最小可为11.23%,最大可为28.43%;滑坡体表层和不同深度的土层,其比重的规律基本一致,近似一条水平的直线,多数分布在2.67~2.72,最小可为2.60,最大可为2.74;滑坡体的密度多数分布在1.90~1.98g/cm^3,最小可为1.90g/cm^3,最大可为1.98g/cm^3;滑坡体的深度在5.3~15.2m范围内变化时,其粘聚力在22.2~43.7kPa范围内变化,内摩擦角在15.4°~19.2°范围内变化。该试验可为类似工程提供可靠的参数。

Based on the landslide prevention and control project in Ganzhou,30 groups of samples were employed to undergo laboratory test moisture content test,specific gravity test,density test and shear strength test.The results showed that the moisture content on the surface of the landslide body fluctuated in a wide range,ranging from 12%to 16%,with the minimum of 8.27%and the maximum of 20.26%.With the increase of depth,the soil moisture content in general presents an increasing trend,generally within the range of 12%~28%,with the minimum of 11.23%and maximum of 28.43%.The laws of the specific gravity of the surface layer of the landslide and the soil layer of different depths were basically the same,approximately a horizontal line,largely distributed within 2.67~2.72,with the minimum of 2.60 and the maximum of 2.74.The density of the landslide is mostly distributed within 1.90~1.98g/cm^3,with the minimum and maximum being 1.90g/cm^3 and 1.98g/cm^3.When the depth of the landslide varies from 5.3 to 15.2 meters,the cohesion varies from 22.2 to 43.7 kPa,and the Angle of internal friction from 15.4°~19.2°.This paper can provide reliable parameters for similar projects.