阪神間における浅層地下水の保護事例について(その12): 被圧帯水層の瞬時の弾性的性質

摘要

There is not enough safe drinking water to supply all over the world. Global water shortages are expected to be worse and worse by increasing demand of water and droughts, this is the serious issue for sustainable societies. While there is a worldwide movement that water is not an economic good but public wealth, in Nada-Gog?, famous for Nada sake in japan, the quality and quantity of groundwater have been protected by public-private conferences about protective measures against underground works since 1924. When the Great Hanshin-Awaji Earthquake happened on January 17,1995, the waterworks were destroyed, so local wells were used for the sufferers to get water. Then, the importance of the groundwater and maintained wells was recognized again. Today, more detailed investigations by using wells for observation are steadily conducted. This paper describes the research on the instant elasticity change of artesian aquifer near railway tracks.%水需要の増加や干ばつによる水不足の懸念は持続可能な社会への問題となる。各国の市民団体や環境保護団体では，水は公共財かつ人間の権利であると主張して，私物化し営利目的での水の使用に反対するという動きが生じている。一方，日本一の酒処として有名な灘五郷では，官民合同で地下水保全策について協議をし，その効果を検証している。現地では，電車などの重量物が通過した際の負荷で水位(水頭)が変動することが知られている。今回，電車通過時の瞬時の水位変化Δを測定し，地下水の弾性的性質を揚水の影響を踏まえて調査したので報告する。