大同地区天然粉土工程特性试验研究

Experimental Study on Natural Silt Soil Engineering Characteristics in Datong Region

以大同地区御河东岸大型住宅小区基础埋深范围内的粉土作为研究对象,通过大量室内试验,获得了粉土试样的基本物理特性指标,以及压实系数、抗剪强度和最优含水率等工程特性指标。对试验结果分析发现:粉土试样对含水率的变化较为敏感,采用适用范围较大的液塑限联合测定法实测液限、塑限较为合理;土样多为扰动试样,室内试验测得的压缩系数波动范围较大。

The natural silt soil of large-scale residential district which is buried within the base scope in east coast of Royal river Datong area is taken as the research object. Through a large number of laboratory test, the silt soil specimen basic physical properties and engineering characteristics such as coefficient of consolidation, shear strength and optimum moisture content are obtained. By analyzing the test result, we found that silt soil specimen is more sensitive to the change of moisture content, so it is more reasonable to measure liquid limit and plastic limit using liquid-plastic limit combined determination method and the measured coefficient of consolidation has a large range because the soil sample are mostly disturbance sample.