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Studies on Biodegradable Geomesh for Erosion Control
By Suresh Kumar S, Iceland
Guide Name : Dr V K Midha
Institute :Dr B R Ambedkar National Institute of Technology
Area of Research : Geotextile
Studies on Biodegradable Geomesh for Erosion Control

Removal of top layer of soil, along with the organic matter and vegetation known as soil erosion is one of the major and silent threat to our planet, followed by pollution and population. Air, water and other human activities are the general mediums of soil erosion; among those major erosion occurs due to the water and rainsplash. 53% of Indian land area is prone to such erosion, and leads to major disasters like land sliding, floods, chocking down the bridges, sedimentation of dams, desertification, etc. North-Western Himalayan regions including the states of Jammu Kashmir, Himachal Pradesh, Uttarakhand, Punjab and Haryana are the frequent victims of such disasters. Flooding in Uttarakhand and Jammu Kashmir (2013 & 2014), and degradation of 20,000 km2 land in Hoshiarpur district in Punjab (1852- 1981) are the best examples of these disasters. Using of biodegradable geomeshes in soil slopes can effectively control such devastating disasters. But commercially available geomeshes are limited in performance, due to lack of application based engineering. In few recent studies, modification of biodegradable geomeshes (Coir and Jute), based on its properties and onsite conditions, were observed to increase its performance. Hence further studies with application based modification of geomeshes are planned in this study to improve its performance. The erosion control performances of modified geomeshes will be evaluated based on ASTM D 7101 in a self designed bench-scale setup. Himalayan soil at slope angles 15°, 30° and 45° will be considered for the study, along with the considerations of rainfall and geographical conditions of those regions. Since the growth of vegetation also controls the land slide and provides permanent stability to the slope, the performance of geomeshes to support the vegetation growth until 21 days will be tested based on ASTM D 7322, using earthen pots and wheat seeds.


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