Stability of slope with influence of tree water uptake /
Muhammad Syamsul Imran Zaini
- xv, 146 pages : illustrations (some color) ; 30 cm. + 1 CD-ROM
Faculty of Civil Engineering & Earth Resources
Thesis (Master of Science in Geotechnical Engineering and Geophysics.) -- Universiti Malaysia Pahang – 2019
Includes bibliographical references
For many years, the construction of residential buildings at hill-site in Malaysia tremendously rising due to the lack of suitable flat land, beautiful scenery and fresh air which will lead to various fatalities event. Numerous disasters such as landslide, deforestation and most of all the slope failure will occurred owing to the development of the residential area at the hill-site area. Cutting down of trees can vanish the reinforcement provided by the root of tree to the soil by means of weakening the soil shear strength due to the increasing value of pore water pressure and decreasing value of effective stress. Root of a tree plays an important part in preventing landslides event to occur either it is by modifying the soil moisture regime via evapotranspiration or providing root reinforcement within the soils. This study is conducted to explores the vegetation approach by using tropical mature tree (Alstonia Angustiloba) and monitors the activeness of the root zone of a tree that lies at the top of the slope by which the data of the matric suction generated within this section of the slope is recorded and applied to the slope stability problem to increase the value of factor of safety (FOS) which can represents the hydrological condition and hence can provide essential quantification information on the behaviour of matric suction (pore-water pressure) changes in relation to tree water uptake. Besides, to validate the soil suction, a contour was plotted and compared to the resistivity and chargeability contour which was conducted through ERI survey. Based on the research conducted, it is proven that by using tree water uptake method can increase the FOS of the slope up to 53% and both matric suction contour and ERI survey contour can be used as a method of analysis to observe and investigate the tropical residual soil slope stability. In retrospect, the method used in preventing the landslides event to occur at the slope is economical and eco-friendly which can be implemented globally.
THE0008798(Local)
Faculty of Civil Engineering & Earth Resources--Dissertations