原状黄土抗剪强度及压缩模量的试验研究

The Test Study of Intact Loess Shear Strength and Compression Modulus

为了解边坡黄土内在变形机理,利用晋南地区某边坡黄土进行侧限压缩试验和固结排水三轴试验,分析了原状黄土的抗剪强度及压缩模量的变化规律。结果表明,在一定围压作用下,原状黄土抗剪强度随含水量的增大而减小;在一定含水量条件下,原状黄土抗剪强度随围压的增大而增大;在含水量相同的条件下,原状黄土压缩模量随压力区间的增大而增大;在相同的压力区间,原状黄土压缩模量随含水量的增大而减小。

In order to understand the deformation mechanism of slope loess,with the help of unconfined compression test and consolidated drained three-axis test for the loess of certain slope of Jinnan area,to analysis the variation law of shear strength and compression modulus for intact loess.The results showed that:When the surrounding pressure is same,the shear strength of intact loess decreases with the increasing of water content.When the water content is same,the shear strength of intact loess increases with the increasing of surrounding pressure.When the water content is same,the shear strength of intact loess increases with the increasing of pressure range.When the pressure range is same,the compression modulus decreases with the increasing of water content.