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Landscaping Hydroseeding Erosion Control Products Slope Vegetation System
Erosion Control Products
Function of Erosion Control Mat
The physical characteristics of soil especially on slopes can be washed out easily. Erosion Control Mat (ECM) can help strengthen the soil face and stabilize the slope structure. As a result, slopes are stabilized either temporarily or permanently. Also, ECM can be used to prevent water from permeating a slope or to control the amount of infiltration that occurs during rain season.
Erosion Control System is usually applied where hydroseeding seeds cannot be well established, slopes over 40 degree gradient are generally considered as not suitable to carry out hydroseeding. Erosion control mat (ECM) is one of the crucial products in this system, it controls the washout of steep slope top soil, it also provide a stability function to prevent landslide. ECM can be further divided into Natural mat, Synthetic mat and Composite mat.
Erosion Control Mat Materials
The materials of ECM can be divided into natural materials and non natural materials. Natural materials consist jute and coconut materials. PVC is the main material used for non natural ECM, e.g Enkamat, Tensamat, Miramat.
Physical Features
One of the most important physical feature of ECM is the difference in dimensions. ECM can be divided into two, three and multiple dimension, the functions of ECM depend on different dimension levels. Two dimension ECM mainly provide the function of providing a cover and protecting existing soil. Three dimension ECM can also maintain imported top soil and multiple dimension mat provides moisture retaining agent for the imported top soil additionally.
2-dimension 3-dimension Multiple Layer
Reasons of Slopes Vegetation Failure
Traditionally, It is believed that laying of synthetic mat followed by hydroseeding is an effective measure in preventing wash out of topsoil and encouraging natural vegetation over slopes. However, some recent findings revealed that the PVC erosion control mats threaten slope vegetation. It prevents the plants from obtaining adequate water and nutrients from the topsoil.
Summary
for The Causes of Slopes Vegetation
Failure
Inappropriate thickness and opening of ECM such that the secondary rooting system can not penetrate through existing topsoil
Growth vegetation trapped inside the ECM
High heat absorption rate that causes the root burn in summer time
ECM materials lack of moisture retaining capability