Some problems relating to groundwater balance
Some problems relating to groundwater balance
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地下水平衡的一些问题
DOI：
10.1080/02626668309491147
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
I. Kayane
中科院分区：
文献类型：
--
作者：
I. Kayane
摘要 以日本长冈市的地下水平衡为例进行案例研究。中冈有三个有趣的特征：（a）冬季地下水从道路下的管道中喷出，融化新落下的雪，（b）河流与含水层在水力上接触，（c）尽管进行了大规模的抽水计划，但地下水位在过去五年中一直保持准静止状态。补给的主要来源是：信浓川、灌溉田的深层渗透、春季融雪和全年降雨。使用约200口井的观测数据来监测地下水位； 8月灌溉期间有地下水流入，但冬春季节因融雪抽水导致地下水资源枯竭。讨论了地下水平衡组成部分的评估和估算；特别是直接或间接测量深层渗透的方法进行了研究。
ABSTRACT The groundwater balance for the city of Nagaoka, Japan is presented as a case study. At Nakaoka there are three interesting features: (a) in winter groundwater is ejected from pipes under the roads to melt freshly fallen snow, (b) the river is hydraulically in contact with the aquifers, (c) the water table has remained quasi-stationary for the last five years despite the vast pumping programme. The main sources of recharge are: the River Shinano, deep percolation from irrigated fields, snowmelt in spring, and rainfall throughout the year. The water table was monitored using observation data from about 200 wells; during the irrigation period in August there was an inflow of groundwater, but groundwater resources were depleted in winter and spring by pumping for the snow-melting scheme. The evaluation and estimation of the components of the groundwater balance are discussed; in particular methods of measuring deep percolation either directly or indirectly are examined.