| Summary: | 碩士 === 國立屏東科技大學 === 土木工程系碩士班 === 90 === The Red Line of Kaohsiung MRT System(K-MRT) is 28.3 km in length connecting Nantzu and Linhai Industrial Parks. It plays a very important role to not only share the overloaded traffic on county highways, but also to balance the gap of living standard between urban and rural areas and then to push the development of Kaohsiung metropolitan surroundings forward. Since the two depots of the Red Line of K-MRT System are fundamental control centers, the investigation and analysis on the potential liquefaction of foundation soils occur underneath these two depots shoundn’t be neglected due to the safty of K-MRT System during an earthquake.
The study focuses on the geohazard investigations at two depots (North&South Depot) of K-MRT red-line System and the application of GPS/GIS/RS integrated technology were both applied on setting up a structuralized database system. With high water table conditions, soil liquefaction disasters might be induced by strong earthquakes. The potential liquefaction of foundation soil at the two depots of K-MRT red-line System was evaluated by using NJRA, T-Y and Seed methods. The former results were used by Iwasaki method based on various PGA and the corresponding soil parameters. The results showed that the areas surrounding the boreholes SB-07 in the South Depot and B-56&BH-64 in the North Depot tended to be liquefied when PGA=0.18g. When PGA=0.23g, the areas near boreholes SB-01 and SB-07 in North Depot and most of the foundation soils in South Depot except surrounding borehole RA-1 area were classified as high potential soil liquefaction by using NJRA and Seed methods respectively. However, most of cases were under sever soil liquefaction occurred at both North and South Depot when PGA was rising up to 0.33g.
The geotechnical and potential disasters database system integrated with the geological information of the two depots and soil liquefaction evaluation was established by using ArcView and Visual Basic Software. The establishment of potential soil liquefaction database system can be expected as a guide line in the future research related to the K-MRT System construction.
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