Abstract
At the construction site for a rainwater storage facility in Niiza City, Saitama Prefecture, the plan includes recharge groundwater into wells outside the excavation area in order to prevent subsidence in the surrounding residential areas. This paper reports on the application of a pumped filtration system for groundwater that is to be injected into recharge wells as a method to reduce clogging. Five recharge wells were constructed, three of which were recharged with filtered groundwater and two with untreated groundwater. After continuously injecting groundwater at a constant rate for about six months, the injection efficiency of the three wells recharged with treated water remained almost unchanged. On the other hand, the two wells recharged with untreated water were more severely clogged, with efficiency drop** by about 10% or less of the initial level. During the construction work, the groundwater level in an observation well outside the excavation area remained unchanged and no land subsidence was observed.
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References
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Acknowledgements
The authors offer their special thanks to Niiza City for the understanding and support for all that is presented here. Special thanks are also due to Kazunori Minagwa, Kenji Tsutsumi, and all staff at the construction site. Without their support, effective recharge of groundwater could not have been carried out.
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© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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Hayashi, H., Ishikawa, A., Kohsaka, N. (2024). Effect of Groundwater Filtering on Clogging of Recharge Well. In: Hazarika, H., Haigh, S.K., Chaudhary, B., Murai, M., Manandhar, S. (eds) Climate Change Adaptation from Geotechnical Perspectives. CREST 2023 2023. Lecture Notes in Civil Engineering, vol 447. Springer, Singapore. https://doi.org/10.1007/978-981-99-9215-7_32
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DOI: https://doi.org/10.1007/978-981-99-9215-7_32
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