| Summary: | 碩士 === 朝陽科技大學 === 營建工程系 === 102 === The quarries in river-bed in Taiwan are the main source of concrete aggregate for construction needs as the economic developments proceed while natural hazards such as tropical cyclone, earthquake and flood-induced mud flow imposed tremendous threats throughout the region. The research is focused on a selected river in Nantou County to study the river-bed quarry exploiting operations under the “exploit/sell separation” and “public bidding” policies which were implemented several years earlier to avoid corruption and civilian mafia interference during the river dredge process. The recently new polices have been conducted/supervised by the Water Resources Agencies and government authorized river bureaus throughout the Taiwan region, which were commonly believed to be effective and helpful for the water management operation.
The results of the study include (1) the advantages and disadvantages in general of the studied river dredging operation, (2) improvement tactics for better river-bed quarry as a useful local natural resource, and (3) positive and negative impacts of the river dredging operations in the aspects of law/regulation, government policy, river management, river function, and economy/society involvements.
The results of the study can be used as an important reference by the related government agencies for better managing the rivers in Taiwan including quarry exploiting and dredging operations.
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