시설농업지역 지하수 인공함양 실증시험 연구 (A Feasibility Test on an Artificial Recharge System for one Representative Greenhouse Complex Zone, Korea)

서지정보

· 발행기관 : 한국지하수토양환경학회
· 수록지 정보 : 지하수토양환경 / 25권 / 1호 / 12 ~ 24페이지
· 저자명 : 이병선, 명우호, 오세봉, 전성천, PIAO JIZE, 송성호

초록

This study was conducted to examine an artificial recharge system, which was considered to be an alternative for securingadditional groundwater resources in a high-density greenhouse region. An injection well with a depth of 14.0 m wasplaced in an alluvial plain of the zone. Eight monitoring wells were placed in a shape of dual circles around the injectionwell. Aquifer tests showed that the aquifer was comprised with high-permeable layer with hydraulic conductivities of1.5×10−3~2.4×10−2 cm/sec and storage coefficients of 0.07~0.10. A step injection test resulted in a specific groundwaterlevelrising (Sr/Q) values of 0.013~0.018 day/m2 with 64~92% injection efficiencies. Results of the constant-rate injectiontest with an optimal injection rate of 100 m3/day demonstrated an enormous storage capacity of the alluvial aquifer duringten experimental days. To design an optimal recharge system for an artificial recharge, the high-permeable layer should beisolated by dual packers and suitable pressure should be applied to the injection well in order to store water. An anisotropyratio of the alluvial aquifer was evaluated to be approximately 1.25 : 1 with an anisotropy angle of 71 degrees, indicatingintervals among injection wells are almost the same.

영어초록

This study was conducted to examine an artificial recharge system, which was considered to be an alternative for securingadditional groundwater resources in a high-density greenhouse region. An injection well with a depth of 14.0 m wasplaced in an alluvial plain of the zone. Eight monitoring wells were placed in a shape of dual circles around the injectionwell. Aquifer tests showed that the aquifer was comprised with high-permeable layer with hydraulic conductivities of1.5×10−3~2.4×10−2 cm/sec and storage coefficients of 0.07~0.10. A step injection test resulted in a specific groundwaterlevelrising (Sr/Q) values of 0.013~0.018 day/m2 with 64~92% injection efficiencies. Results of the constant-rate injectiontest with an optimal injection rate of 100 m3/day demonstrated an enormous storage capacity of the alluvial aquifer duringten experimental days. To design an optimal recharge system for an artificial recharge, the high-permeable layer should beisolated by dual packers and suitable pressure should be applied to the injection well in order to store water. An anisotropyratio of the alluvial aquifer was evaluated to be approximately 1.25 : 1 with an anisotropy angle of 71 degrees, indicatingintervals among injection wells are almost the same.

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