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http://dx.doi.org/10.9720/kseg.2020.4.603

A Study on Optical Design Factors by Artificial Recharge Performance  

Won, Kyoung-Sik (Geotech Consultant Co., Ltd.)
Lee, Yeoung-Dong (Geotech Consultant Co., Ltd.)
Shin, Dong-Min (Geotech Consultant Co., Ltd.)
Kim, Byeong-Jun (Geotech Consultant Co., Ltd.)
Kim, Gyoo-Bum (Department of Construction Safety and Disaster Prevention, Daejeon University)
Publication Information
The Journal of Engineering Geology / v.30, no.4, 2020 , pp. 603-615 More about this Journal
Abstract
The design factors of artificial recharge are determined by considering the hydrogeological characteristics of the aquifer. The optimal design factors for artificial recharge were derived after performing the injection tests step by step for each injection type (vertical well, ditch and mixed type), which were built in the test site of the study area. It was analyzed that the difference in the injection effect according to the diameter of the injection well was not large, and the 100 mm well was evaluated as appropriate in consideration of the availability and economy of land use. Since the injection effect was well maintained even in the upper rock, the depth of the injection well was proposed for the alluvial layer and the upper rock layer. On the other hand, in four cases of filter media in the ditch, it was analyzed that the penetration efficiency and the hydraulic interference effect indicated excellent injection performance when a filter medium of 10 to 30 mm diameter was filled in the ditch. In addition, the proper spacing of the injection wells was analyzed as 9~12 m considering the interference efficiency. The interference efficiency attenuation coefficient per 1 m of hole spacing was calculated to be 1.75% in this area. In the future study, the artificial recharge design factors obtained in this stage are applied and verified on site construction and operation. Also it is expected to contribute to securing water in areas where there is always a lack of water.
Keywords
aritifitial recharge; design of artificial recharge;
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Times Cited By KSCI : 4  (Citation Analysis)
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