Assessment of a Slope Stability Using the Classical and Modified Circular Cylindrical Sliding Surface Methods
Abstract
In this work, the stability of the slope of Mount Kok Tobe is assessed under the following three conditions: condition 1 - the soil of the slope is homogeneous and is completely in its natural state; condition 2 - the surface layer of the slope 70 cm thick is moistened by rainwater and it is assumed that the sliding surfaces are deep (below the base of the slope); condition 3 - the surface layer 70 cm thick is moistened by rainwater and it is assumed that the sliding surfaces are close to the moistened surface layer of the slope. The assessment of slope stability was carried out using the circular cylindrical sliding surface (CCSS) method. A modified CCSS method has also been developed and used in the calculations, which, together with the Terzaghi-Fellenius method, makes it possible to speed up and increase the accuracy of determining the position and characteristics of sliding surfaces. It is established that the slope has an insignificant margin of stability. To increase the stability of the slope, it is recommended to sow apple trees of the aport variety, which coincide in existence and fertility with the conditions of Kok Tobe Mountain.