| Summary: | 碩士 === 國立中興大學 === 水土保持學系所 === 96 === Large amounts of buildings and impervious public facilities planned at the consolidation sites of slopeland rural village are usually resulted in the decrease of infiltration and/or water storage capacity. Surface runoff increasing the loading of public drainage causes inundation of lowland and impacts of ecological environment for the rural villages due to improper slopeland development.
In this study, according to the design and technique specifications for green building materials, land use changes of Taichung County He-ping village are used to calculate the benefits of water storage for the public facilities at the scenarios of before/after consolidation and the recommended case. The current status of the village in water storage shows that there is a volume of 497,231 m3 decrease compared to its before-consolidation, and with the volume of 99,668 m3 deficit compared to the statutory amount. The recommend case, considering concepts of water storage and review relative acts to adjust the proper layout, shows an additional volume of 158,495 m3 compared to after-consolidation.
Placement and volume of detention/sedimentation facilities should be examined by the soil and water regulation. Results show that detention/sedimentation ponds are all met the regulation, while the third and forth ponds with limitation in flood detention. Therefore, a dynamic watershed delineation technique is applied to draw three watersheds in the study area and then couples with the concepts of interception and storage to redesign the site and volume of detention-sedimentation pond. The result shows that the water storage capacity not only can reach to 6,183 m3, but also can provide water for the use of irrigation. A Multiple-object use of storage facility is strongly recommended for decreasing the ecological environment deteriorated and water resource waste.
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