乌拉圭里维拉和Tacuarembó露头瓜拉尼含水层系统基线:压力测量和脆弱性

Paula Collazo
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引用次数: 0

摘要

介绍了里维拉省和乌拉圭Tacuarembó省露头Guaraní含水层系统(GAS)的测压、地下水位和脆弱性基线。流动网络和化学成分是了解地下动力学、确定补给和排泄区、优先流动方向和确定水力梯度的关键。从基线上分析其时空演变,对资源的管理和保护至关重要。采用GOD法和EKv法确定脆弱性,结果相似,大部分研究区存在高脆弱性和中等脆弱性。采用Foster & Hirata(34)的方法确定了地下水污染的风险,在中度和高度脆弱性地区,由于缺乏卫生设施、固体家庭废物、不规范的定居点和加油站,潜在污染荷载的风险很高。在大多数情况下,工业和采矿活动以及墓地构成中等风险。拥有地下水污染的脆弱性和风险地图对于确定最脆弱的地区和实施详细的研究、控制和保护工具至关重要,这些工具旨在保护和减轻对天然气的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Baseline of the outcropping Guarani Aquifer System in Rivera and Tacuarembó, Uruguay: Piezometry and Vulnerability
The piezometric, water table and vulnerability baseline of the outcropping Guaraní Aquifer System (GAS) in the departments of Rivera and Tacuarembó (Uruguay) is presented. The flow network and chemical composition are essential to understanding underground dynamics and identifying recharge and discharge zones, preferential flow directions, and determining hydraulic gradients. It is essential to analyze its evolution in time and space from the baseline, for the management and protection of the resource. Vulnerability was determined by applying the GOD and EKv methods, obtaining similar results, with areas of high and moderate vulnerability in most of the studied area. The risk of groundwater contamination was determined using the method of Foster & Hirata(34), obtaining high risk for potentially polluting loads from lack of sanitation, solid household waste, irregular settlements, and gas stations, in areas of moderate and high vulnerability. Industrial and mining activity and a cemetery represent a moderate risk in most cases. Having maps of vulnerability and risk of groundwater contamination is essential to identify the most vulnerable areas and implement detailed study, control, and protection tools aimed at conserving and mitigating impacts on GAS.
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