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首页> 外文期刊>Journal of the Geological Society of India >Hydrogeological condition and assessment of groundwater resource using Visual MODFLOW modeling, Rajshahi city aquifer, Bangladesh
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Hydrogeological condition and assessment of groundwater resource using Visual MODFLOW modeling, Rajshahi city aquifer, Bangladesh

机译：使用Visual MODFLOW建模的水文地质条件和地下水资源评估，孟加拉国拉杰沙希市含水层

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摘要

The Rajshahi city is the fourth largest metropolitan city in Bangladesh on the bank of the River Padma (Ganges). Here an upper semi-impervious layer overlies aquifer - the source for large-scale groundwater development. The groundwater resource study using Visual MODFLOW modeling shows that recharge occurs mainly due to infiltration of rainfall and urban return flow at low rate, and water level fluctuates seasonally in response to recharge and discharge. Hydraulic connection between river and aquifer which indicates inflow from high river water levels beyond its boundaries. The total groundwater abstraction in 2004 (15000 million liters) is lower than total input to aquifer reveals an ample potentiality for groundwater development with increasing demand. But groundwater shortage (1000 million liter/year) especially in the vicinity of the River Padma in dry season happens due to its increasing use and fall of river water level resulting in reduced inflows and hence decline in groundwater level. The conjunctive use of surface water-groundwater and its economic use will help for sustainable groundwater supply to avoid adverse impact.
机译：拉杰沙希市是孟加拉国在帕德玛河（恒河）河畔的第四大都会城市。在这里，上半透水层覆盖在含水层上，含水层是大规模地下水开发的来源。使用Visual MODFLOW模型进行的地下水资源研究表明，补给主要是由于降雨的渗入和低速的城市回流造成的，并且水位随补给和排放而季节性波动。河流与蓄水层之间的液压连接，表明来自高水位的水超出其边界流入。 2004年的地下水总抽取量（150亿升）低于含水层的总投入量，表明随着需求的增加，地下水开发的潜力很大。但是由于干旱的增加和河水水位的下降导致流入量的减少和地下水位的下降，特别是在旱季的帕德玛河附近发生了地下水短缺（10亿升/年）。地表水—地下水的联合使用及其经济用途将有助于可持续的地下水供应，避免产生不利影响。

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