Landslide simulation triggered by earthquake based on ground motion data variation in Phuket, Thailand | |
| Author | Bonggoch Salee |
| Call Number | AIT Thesis no.GE-21-10 |
| Subject(s) | Landslide--Thailand--Phuket Earthquakes--Data processing Ground movements |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Geotechnical and Earth Resources Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The earthquake occurred at Si-Sunthon District, Amphoe Thalang, (8.02°N, 98.37°E) From 16 April to 5 May 2012. This event produced the highest earthquake magnitude with 4.3 and damaged some of the old buildings. Moreover, Phuket has potential with a maximum earthquake magnitude of about 7.4 from two active falts, the Ranong and Khlong Marui faults. In this research, a landslide at Location 1 in Kamala and Location 2 in Chalong during the earthquake condition was simulated by coupling with the effect of the groundwater table and the rainfall. Geostudio software was used in this study with the SLOPE/W, Quake/W and SEEP/W packages to do the analysis. Both locations simulated stability of various ground motions from 3.3 magnitudes to the maximum 7.3 magnitudes with three scenarios. Locations 1 and 2 of scenario 1 show that the earthquake can not trigger a landslide, but the factor of safety decreases when the magnitude increases. Scenario 2 coupling with groundwater shows stability still high in both locations, but a factor of safety decreases from scenario 1 by -50 % and -49 % for Locations 1and 2, respectively. Finally, the combination of rainfall and earthquake in scenario 3 presents the result of Locations 1 and 2, a factor of safety drop from scenario 1 about -67% and -72%. However, Location 1 still has high stability because of the geometry with the parallel subsurface, but Location 2 has a low safety factor because of the complex geometry that has an effect when simulating the seepage analysis. The simulation of slope stability during the earthquake at Phuket should consider the effect of groundwater level and subsequent rainfall. |
| Year | 2022 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Avirut Puttiwongrak |
| Examination Committee(s) | Chao, Kuo Chieh;Suttisak Soralumpaiyaput |
| Scholarship Donor(s) | Royal Thai Government Fellowships |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2022 |