| Summary: | 碩士 === 國立屏東科技大學 === 土木工程系碩士班 === 93 === The A-Kong-Tien reservoir is situated at the upstream of A-Kong-Tien River within the district of Yen-Tsao Village, Kaohsiung County. The reservoir watershed is bounded within three township regions of Yen-Tsao, Tien-Liao and Kangshan, with a total coverage of 31.87km2. The watershed is the main catchment of water resources from the upstream of Tso-Shuei River and Wong-Lai River.
Because the watershed is situated in the mudstone regions of south-western Taiwan, an annual average of 500,000 cubic meters of sand sediments is trapped in the reservoir. The level of sedimentation is of critical severity that the safety of the dam, and, the inhabitants and some important facilities in the downstream are endangered. Conservational works of the reservoir watershed has been on-going for over 50 years. To effectively control the status of the conservation works within the watershed implemented over the years, there is a need to conduct evaluations of the current status of the conversation works. This is necessary for the overall perpetual management of the watershed in order to extend the life of the dam.
GPS/GIS technologies were used in an integrative manner to carry out an investigation of the current status of the conservation works. GPS coordinates of conservation works and basic geomorphic data of the watershed environment were collected. Various layers of geographic information of the reservoir watershed were established.
Sixty-nine conservation works within the reservoir watershed were investigated for their current status of damage. The influence of spatial distribution properties on the degree of damage was analyzed. Properties of the sediment in the watershed were also investigated, its suitability for recycled use as ecological engineering material evaluated. Furthermore, an information query system for conservation works within the A-Kong-Tien reservoir watershed was completed. This information provides the administrative authority of the reservoir a basis for the maintenance, improvement and layout planning of conservation works, thereby furthering the goal of perpetually managing watershed of the reservoir.
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