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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/42134

Title: Identification of conductible fractures at the upper- and mid- stream of the Jhuoshuei River Watershed (Taiwan)
Authors: P.Y. Chou;H.C. Lo;C.T. Wang;C.H. Chao;S.M. Hsu;Y.T. Lin;C.C. Huang
Contributors: 國立臺灣海洋大學:河海工程學系
Date: 2011
Issue Date: 2017-04-27T01:19:15Z
Publisher: Advances in the Research of Aquatic Environment
Abstract: Abstract:The movement and storage of ground water in the mountainous region has a significant impact on the dynamics of surface water flow. An adequate identification of the conductible fracture in the aquifer has thus received growing interest over the past decades. This paper summarizes the major findings from the first year of a hydrogeological investigation program initiated by the Central Geological Survey, Ministry of Economic Affairs (MOEA) of Taiwan since 2010, with a special focus on exploring in detail the fracture permeability. During the on-site investigation, geophysical logging was applied to delineate the lithostratigraphic characteristics of bedrock aquifers. The hydraulic conductivity of 67 observation segments was estimated by the constant head injection method. From the information gathered in this study, the hydraulic conductivities of the identified fractured medium above a depth of 40m are more than one order higher than that of the matrix. The occurrence of ground water in a fracture network, however, is found to be not solely governed by lithological composition, but more possibly by fracture porosity and spacing. A simple linear relationship was found by plotting the hydraulic conductivity against the product of total porosity and cubic aperture ratio (fracture spacing/sealed-off interval between the packers).
Relation: 2, pp.11-19
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/42134
Appears in Collections:[河海工程學系] 期刊論文

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