A Review On Dump Slope Stabilization By Revegetation With Reference To Indigenous Plant

摘要

Abstract: The waste, sub-grade ROM and Fines dumps are characterized by high rock fragment contents, low moisture retention capacity, higher bulk density, low nutrients, lower pH and elevated metal concentrations. Use of suitable revegetation programme, that require the selection of right type of plants to be used vis-'-vis the site condition and characteristics, can enhance the long term stability, both mechanical and ecological, of dumps (waste, sub-grade ROM and fines) through providing vegetative cover to control soil erosion & gully formation, consolidation of dump top & side surfaces, binding the loose particles through intricate roof system, etc. This paper overviews the roles of Revegetation programme that can be used where vegetation is considered to be the long term answer to slope protection and erosion control. Various revegetation processes like Coir matting, Lemmon Grass, Vetiver Grass and Indigenous plant etc. may find a wide range of usage in Iron ore mines for dump stabilization.Miyawaki method of plantation is more effective than the conventional method of plantation. This will lead to co-existence of plants and as a matter of fact each plant draws from the other vital nutrients and they grow to become strong and healthy. The Miyawaki Plantation technique aim at 'Survival at fittest' the area undergone such plantation have an ecology of their own. The Indigenous Plant has good binding capacity and helps to control soil erosion as well as improve the dump stability. Indigenous plant species like as Shorea robusta (Sal), CROTON ROXBURGHII, Dal-bergia Sisoo (SHISHAM), KARANJ, Azadirachta (NEEM) etc. The growth of indigenous plants is depending upon the soil quality as well as the organic matter of the dump material. The leaf debris plays important role for improving the organic matter of dump material for successfully implementation of revegetation programme.