Stabilization of Landslides Sliding Layer Using Electrokinetic Phenomena and Vacuum Treatment

Abstract

The article presents the efficiency of application of cohesive soil dewatering for increasing its resistance to shearing, which influences the mass stability of flysch rock. Studies of the typical soil constituting the contact layer initiating the sliding of existing Carpathian flysch landslides were conducted. This aspect was examined because the water content of this soil decides its ability to form a sliding surface of the landslide block soil. The soil was subjected to changes in water content by dewatering with different methods. The influence of dewatering by self-acting gravitational outflow was examined and was additionally aided by two selected methods: electrokinetic phenomena and vacuum treatment. The model study conducted demonstrates the influence of the abovementioned dewatering methods on increasing the strength parameter of the soil at the contact layer in which sliding surfaces can be created. The paper also demonstrates the degree to which the application of the vacuum and electrokinetic treatment caused by DC current voltage influences the draining, decrease of plasticity, and increase of soil shear stress resistance. The application conditions and increase in effectiveness due to the application of the studied methods were determined. The proposed methods allowed for the strengthening of slopes for two exemplary landslides which formed in the area of occurrence of the Carpathian flysch.

Large Shear Strength Parameters for Landslide Analyses on Highly Weathered Flysch

“…While analyzing the laboratory results, it is also clear that the relationship between the shear strength and the percentage of the moisture content seems to be inversely proportional [63]. Furthermore, the angle of friction derived from dense and loose saturated conditions ranged lower than 30 degrees, as it is also noted in other similar studies [23].…”

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

“…The graph shows the consistent result with past findings and a significant voltage loss for constant voltage application on soil specimens. Many researchers also reported similar findings [29,37,38]. The Voltage loss that occurred in the vicinity of the anode was found to be less than at the cathode [39].…”

A study on soil arching effect of anti-slide pile considering different pile arrangements

“…With the continuous growth of global population and the gradual extension of human activities (Zhang et al, 2023a), landslide disasters are occurring more frequently and causing more serious loss of life and property. Therefore, according to the engineering geological characteristics of rock-soil mass in landslide areas, it is of great practical significance for the safety of people and properties to study the genetic mechanism of landslides and develop reasonable support design to improve the stability of slopes (Ukleja, 2020;Zhu et al, 2021;Zhang et al, 2023b).…”