AN INVESTIGATION OF CEMENT DEEP MIXING COLUMNS STABILIZATION IN THE ROAD FOUNDATION ALONG THE CHO GAO CANAL

Abstract

Cho Gao Canal is one of the most important water transportation routes in the Mekong River system in Tien Giang province, Vietnam. Recently, traffic jams on the canal have become a frequent occurrence, accompanied by the problem of river erosion, which has damaged many buildings and roads on both sides, resulting in losses to both people and property. To reduce the damage caused by landslides and collapse, the Cement Deep Mixing (CDM) column method is being studied to stabilize the road foundation along the canal. A series of finite element method (FEM) simulations in PLAXIS 2D are being conducted under various conditions, including different water levels and configurations of CDM columns, to assess the stability of the canal's slope. Additionally, this study considers the influence of factors such as cement content and the surrounding environment, including air, soil, freshwater, and saltwater, on the formation of CDM column strength. To improve the slope stability of the Cho Gao canal, the recommended configuration involves utilizing CDM columns with a diameter of 0.5 meters. According to the research results, these columns are strategically arranged in three rows with a spacing of 0.5 meters, and each column is designed to have a length of 10 meters.