Soil Mapping Of Slope Failure Due To Rainfall At USM Hostels Penang

Abstract

Hill slope landslide and erosion were happening at the USM hostel due to heavy rainfall and stormy weather duringthe month of November till December 2017. This was a monsoon season, however this occurrences was not normal and in Penang alone there where so many slope failure and flash floods. A remedial work was carry out to correct the slope failure on site, where during the seasonal rainfalls the slope was heavily eroded and all the trees and grouted slope which was in placed before failed to sustained from the water movement. The site was then explored to foresee the major problems and to counter the stability by carrying out 2D Soil Resistivity and site investigation to understand, analyze and rectify the problem. From this study, we have conducted the soil mapping of the ground to further understand the soil condition so that all the correct measures can be done effectively. Since, this needs to be rectified immediately; therefore soil nailing and grouting method were proposed along with different counter measure to stabilize the slope. This was done under three weeks and monitoring systems was included to measureground water level and inclination of ground movement. From the study it shows that after rectification and placing the right infrastructure to the slope, the system in place are now stabilized and able to cater heavy downpour aftercompletion.