Probe into the Influence of Water Content upon the Safety and Stability of Loess Slope Based on the Garden Project of Hejin Cherry Valley

Abstract

In order to consider the influence of soil moisture content change on the slope stability of Hejin Cherry Valley Garden Project, this paper firstly selects soil samples at typical locations to obtain the shear strength test results of loess under different moisture content; Then, based on rhinoceros and FLAC3D software, the strength reduction method is used to analyze the slope stability, and the impact of water content on the slope stability is comprehensively evaluated according to the safety factor, plastic zone and shear strain. The results show that when the soil is completely dry, the cohesion and internal friction angle are both maximum; When the water content is 11%, the internal friction angle and cohesion are at a low level; Under different water content conditions, there is a watershed for slope stability. The water content is higher than 11%, and the safety factor is lower than 1.3. With the rise of water content, the maximum shear strain of the slope spreads from the toe to the slope surface. It is found in the comprehensive plastic zone the slope surface near the top of the slope is prone to landslide. The research results of this paper can provide reference and guidance for the stability and safety of loess slope after the construction of landscape architecture in Central Plains.