一、前言在日本,由于过分地开采地下水,造成部分地区地基下沉和盐害等使环境遭到破坏,但有效地利用宝贵的地下水力资源的潜力仍很大。地下水不仅用于自来水,工业和农业,而且还可利用地下水具有其 I. INTRODUCTION In Japan, the potential for effective use of valuable groundwater resources is still high due to the excessive exploitation of groundwater and the destruction of the environment caused by subsidence and salt damage in some areas. Groundwater is not only used for running water, industry and agriculture, but also for groundwater