需求开采对机井地下水含水层资源供给功能的影响研究——以重庆市红层区的打井工程为例

A Research on the Impact of Water Exploiting for Need Effects on Resources Supply Functions of the Wells Groundwater Aquifer:A Case Study of Drilling Wells Project in the Red Beds of Chongqing

维持地下水含水层资源供给功能是地下水资源可持续利用的基础保障.本文以重庆红层区"打井工程"为例,通过实地调查、文献资料分析和地下水含水层管理模型等方法,系统地对比了机井抽水含水层在成井前后供水水量、稳定水位以及水质的变化,估算并分析了区域机井抽水含水层的年降雨补给量、年需求开采量和储水量之间的平衡,确定了区域机井抽水含水层开采利用的阶段及其相应阶段划分的管理需求措施.综合表明:需水开采强度和成井时的富水性是影响机井地下水含水层资源供给功能的主要因素,其他不利因素(气候干旱、水环境保护等)会加剧影响机井抽水含水层资源供给功能.在已实施的"打井工程"红层区应综合考虑这些因素,这将对防止红层丘陵区人畜饮水困难问题反弹有重要的理论与实践意义.

Water sustainable utilization is essential for keeping well aquifer for water supply. This paper takes well drilling project in the Red Beds of Chongqing as an example, by the methods of actual investigations and peasant household international field, and model of managements of groundwater aquifer, and so on. First, the water supply and water line and water quality around driven well of aquifer are compared. Second, using water balance theory to analyze the relationship of rainfall recharge and water supply and storage volume of driven well of aquifer. At last, based on the comprehensive analysis of stages of exploiting the groundwater resources and draws on the experience of the policies and measures of stages. To sum up, it is shown that demand of exploiting intensity and watery aquifer of welling were mainly effects on functions of resources supplied of the wells groundwater aquifer, others disadvantages of dry weather and unreasonable for human activities may aggravate at this trend. So we should consider these factors in the implemented drilling wells project, which is important of theoretical and practical significances to against rebounding of difficulty in drinking water.