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Management of groundwater in the Nobi Plain that modeled groundwater use for earthquake disasters and environmental preservation

机译：地下水建模地震灾害与环境保护的地下水管理

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The pumped discharge of groundwater increased rapidly in Japan during the period of fast economic growth since the beginning of the 1960s. As a result, land subsidence has been observed, including throughout the Nobi Plain. Laws have led to restrictions on the collection of underground water, and pumped discharge has gradually reduced. In recent years, the groundwater level that had formerly decreased has begun to rise again, leading to less land subsidence. However, as groundwater levels rise, the occurrence of new problems is feared, such as the danger posed by liquefaction. In this study, an analysis was conducted on the changes in the state of groundwater based on future groundwater-use scenarios and forecasts of land subsidence. This involved thinking about the effective use of groundwater to prevent excessive rises in groundwater levels, using a three-dimensional groundwater-flow analysis and a perpendicular one-dimensional subsidence consolidation analysis. As a result, it was shown that it would be beneficial to use groundwater as a means of continuous environmental preservation and as the water resource at the earthquake disaster. At this time new wells were set up at the refuge of the disaster specified in the Nobi Plain. And the remarkable land subsidence was not caused by pumped discharge.
机译：自20世纪60年代初以来，日本在日本迅速增加地下水的泵送放电。因此，已经观察到土地沉降，包括整个Nobi平原。法律导致了地下水收集的限制，泵送放电逐渐减少。近年来，以前减少的地下水位已经开始再次上升，导致土地沉降较少。然而，由于地下水位上升，担心新问题的发生，例如液化造成的危险。在这项研究中，对地下水状态的变化进行了分析，基于未来的地下水使用场景和土地沉降预测。这涉及使用三维地下水流量分析和垂直一维沉降合并分析来思考地下水以防止地下水位升高过度升高。结果表明，使用地下水作为连续环境保护的手段，作为地震灾害的水资源将是有益的。此时，新的井是在Nobi Plain中规定的灾难的避难所建立了新的井。而泵送放电造成了显着的土地沉降。

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