西南典型断陷盆地岩溶地下水径流特征研究
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摘要
西南岩溶山区断陷盆地广布,自然资源和环境条件优越,岩溶地区地下水径流特征复杂,水资源时空分布不均,是地下水资源勘查和开发利用的主要对象。通过对云南蒙自断陷盆地岩溶地下水开展现场调查、示踪试验、综合研究等,查明蒙自盆地岩溶地下水径流特征主要为:径流方向复杂多变,同一水文地质单元存在不同流场,径流垂直分带明显,管道流与裂隙流并存、管道流为主,径流途径长、状态复杂、流态多变等基本特点。确定了南洞流域地下水南边界,改变了传统认识。对研究西南岩溶区地下水径流特征、合理评价和开发地下水资源具有重要的理论意义和实际应用价值。
The faulted basins in the southwest karst mountains are widely distributed with excellent natural resources and environmental conditions.The characteristics of groundwater runoff in the karst areas are complex,and the spatio-temporal distribution of water resources is uneven.It is the main target of exploration and exploitation of groundwater resources.Through on-site investigation,tracing test and comprehensive study on karst groundwater in the Mengzi fault-depression basin in Yunnan Province,it is found that the runoff characteristics of the karst groundwater in the Mengzi Basin are mainly as follows:the direction of the runoff is complicated and changeable; the same hydrogeology unit has different flow fields and runoffs Vertical zoning obvious,pipe flow and fissure flow coexist,the main pipeline flow,runoff path length,complex state,changing fluid flow and other basic features.The south boundary of groundwater in South Cave Basin has been identified,changing the traditional understanding.It has important theoretical and practical value to study the characteristics of groundwater runoff in the karst area of Southwest China and to reasonably evaluate and develop groundwater resources.
The faulted basins in the southwest karst mountains are widely distributed with excellent natural resources and environmental conditions.The characteristics of groundwater runoff in the karst areas are complex,and the spatio-temporal distribution of water resources is uneven.It is the main target of exploration and exploitation of groundwater resources.Through on-site investigation,tracing test and comprehensive study on karst groundwater in the Mengzi fault-depression basin in Yunnan Province,it is found that the runoff characteristics of the karst groundwater in the Mengzi Basin are mainly as follows:the direction of the runoff is complicated and changeable; the same hydrogeology unit has different flow fields and runoffs Vertical zoning obvious,pipe flow and fissure flow coexist,the main pipeline flow,runoff path length,complex state,changing fluid flow and other basic features.The south boundary of groundwater in South Cave Basin has been identified,changing the traditional understanding.It has important theoretical and practical value to study the characteristics of groundwater runoff in the karst area of Southwest China and to reasonably evaluate and develop groundwater resources.
引文
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