Rainfall-induced landslide hazard analysis of the UPLB campus

Date

6-2015

Degree

Bachelor of Science in Civil Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Jedidiah Joel C. Aguirre

Abstract

Yearly, more or less 20 typhoons enter the Philippines Area of Responsibility that makes rain abundant in the country. The University of the Philippines Los Baños (UPLB) is composed of hilly terrain making it a subject for rainfall-induced landslides. In order to analyze the hazard brought by rainfall-induced slope failure in the study area, slope stability analysis was performed for the UPLB Campus and its surrounding areas. This study aims to determine if the campus is susceptible to the occurrence of rainfall-induced landslides. Due to limited soil data from geotechnical investigation and uniform general geology on the are based on the map from Mines and Geosciences Bureau (MGB). uniform soil properties were assumed for the area. Hydrologic frequency analysis was done with the rainfall records in the area to assess rainfall depths for 2, 5, 10, 25, 50, and 100 years rainfall return periods. Shallow Landslide Instability Prediction (SLIP) model was used to analyze stability of slopes inside the study are during rainfall event. ArcGIS10.2 and QGIS 2.8.1 were used to carry out the computations and to create maps that shows spatial variations of the factor of safety in the study area. Based on the factor of safety maps generated by the study, there is very little probability that a rainfall-induced landslide will occur in the study area suggesting that the hazard brought by the occurrence of the disaster is relatively small.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2015 E63 /E93

Document Type

Thesis

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