Consideration of Embankment Construction to Prevent Flooding with and without Geotextile

Abstract

In 2021, the solar power plants at Dan Chang, Suphanburi affected the flood from the heavy rainfall, damage to solar cells and unable to generate electricity. Although the site had the existing retaining wall, flood intruded through the site. In 2020, a new high level and strong retaining wall was designed and constructed to prevent flooding. The original site was hills that was already very high and constructed close to the land boundary. Additionally, the side slope was up to 2.5:1. It needed also prevent the slippage of new soil filling. Therefore, the geotextile was selected to prevent soil slippage. and flood protection. This article aims to disseminate knowledge on construction of retaining walls with and without geotextile in high flood risk areas and can be used as a reference in the design, construction and engineering supervision. The consideration retaining walls construction was the analysis, check of the soil at the laboratory and field. The improvement of the strength of soil slope was by using geotextile and concrete retaining walls to help prevent soil slipping in areas near land boundaries. The study found that in the construction of retaining walls to prevent flooding, several standard tests and construction method are required, including soil shear strength and internal friction angle testing, slope stability test, compaction testing, permeability test and leveling and slope of retaining wall to mindful for the construction of retaining walls to meet the objective.