DISPERSIVE SOIL AND ITS MANAGEMENT - A BRIEF INTRODUCTION

YMER Digital Pub Date : 2022-08-09 DOI:10.37896/ymer21.08/33
S. Satapathy
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Abstract

When a saline-alkali (sodic) soil comes in contact with rain water, water molecules in between the clay platelets cause the clay to dislodge and platelets are detached from the soil aggregate,this phenomenon is known as dispersion. It causes serious complications to stability of earthretaining structures or any water retaining structure due to dispersive characteristics of soil. Structures like embankments, channels and other areas are at risk of serious erosion because it is easily erodible and deflocculated in water. Therefore, in these applications it is important tocheck for erosion especially during high flow conditions. Dispersive soil persists high swelling and shrinking potential and in intact sate possesses low resistance to erosion and low permeability. The present paper attempts to examine the prime characteristics of dispersive soil, methods for identification, problems due to dispersive soil and their remedies. Keywords: sodic soil, erosion, deflocculation, high swelling and shrinking potential. erosion, challenging & problematic soils
分散性土壤及其治理简介
当盐碱土与雨水接触时,粘土片之间的水分子使粘土移动,而粘土片与土壤团聚体分离,这种现象被称为分散。由于土壤的分散性,它会给护土结构或任何挡水结构的稳定性带来严重的复杂性。堤防、渠道和其他区域等结构容易受到严重侵蚀,因为它们在水中很容易被侵蚀和脱凝。因此,在这些应用中,检查腐蚀非常重要,特别是在高流量条件下。分散土具有较高的胀缩潜力,在完整状态下具有较低的抗侵蚀性和低渗透性。本文试图探讨分散性土壤的主要特征、鉴定方法、分散性土壤所引起的问题及其补救措施。关键词:盐碱土;侵蚀;反絮凝;侵蚀,挑战性和有问题的土壤
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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