Assessment on the contribution of four different plant roots on protecting the slope and its stimulation on 3dimensional analysis of finite element method

Large number of landslides were occurring on monsoon season in Nilgiris district at every year. So many researches are working towards to minimize those hazard by adopting different methods such as nailing, geo-reinforcement, retaining structures, etc. But in this paper to introduce and be explain the soil bioengineering technique to protect the landslide and slips along the hill slope. Vegetation increases the stability of the soil load along slopes, which increases shear strength and reduces soil erosion. The main aim of this paper is to increase our understanding on root biotechnical properties of plants, their contribution to soil reinforcement and to further investigate on the interrelationship of pull out resistance and plant morphology. Those different plants were cultivated in a pot culture and considerably grow up under natural condition. Then shallbeconductaTriaxial shear testfortheundisturbed soil sample which are taken from the pot by using small scaled core cutter with dimensions of 38mm in diameter and 76mm in height. Those plants were pull outed from a pot with gradual load application with measurement of corresponding vertical displacement. The properties of root were assessed in a laboratory in a different ways and manner such as RAR, root biomass, root traction resistance, root angle, root thickness, root depth, root density, root specific length and root decay rate. If cultivating a plants on a hill slope, it enhances its shear strength and reduces its pore water pressure by introducing a roots between soil pores.