【作者】 咸云尚；

【导师】 刘建刚；

【作者基本信息】 河海大学 ， 地质工程， 2006， 硕士

【摘要】 随着我国南方岩溶区水电事业建设的深入,库坝区岩溶渗漏的精确勘察成为急待解决的问题。本论文主要从以下几方面展开研究。 在前人研究的基础上,建立了管道流场与分散流场的岩溶水示踪数学模型,并推导了其解析解,根据解析解给出了相应的典型示踪曲线类型。通过对接收点示踪剂浓度曲线反演了岩溶介质类型。 研究了温度、电导率示踪理论。温度、电导率是良好的示踪剂。大地热流场与岩溶水渗流场的相互作用以及水岩相互作用使岩溶水流场的温度、电导率呈现不同的时空变化规律。根据研究已完测的不同深度部位温度和电导率的分析,研究了岩溶水的运动规律和岩溶介质的分布特征。 水化学成份反映了岩溶水形成的一定地质环境。本文用自组织神经网络对岩溶区水化学成份进行了聚类分析。根据亲疏关系,分析了水点间的水力联系。单孔人工同位素示踪技术是研究地下水运动的有效手段,本论文把单孔人工同位素示踪应用到岩溶水研究中。在钻孔中用放射性同位素¹³¹I（以碘化钠的形式存在）均匀标记地下水。¹³¹I在钻孔中随地下水流动,在地下水下游侧富集,并向含水层中弥散。用先进的同位素探测仪追踪¹³¹I的这种变化过程,从而计算出岩溶水在地下某一点的流速、流向,提高了对岩溶水总体运动规律的认识。 论文综合运用了岩溶水示踪数学模型,温度、电导率和人工同位素示踪技术对岩溶水文地质条件进行了研究,并在江苏句容抽水蓄能电站岩溶水文地质条件研究中得到了验证。更多还原

【Abstract】 With the building of great powerstations in karst area in south of China, how to detect the leakage in karst has become one of main problems. This paper make study on the follow aspects.On the base of former research, build the karst water trace mathematical modeling in tube flow field and disperse field. Deduce their analytical solution, and give the corresponding typical tracing curves. Inverse the karst medium forms by the concentration curves of tracers with time in receiving points.Study temperature, electrical conductivity tracing theory. Temperature and electrical conductivity are good tracers. The reciprocity between earth heat field and karst seepage field and the reciprocity between karst water and karst make the karst seepage, temperature and electrical conductivity vary in different discipline about time and space. According to the research of temperature and electrical conductivity which have been detected, study mobile discipline of karst water and the distributing character of karst medium.Hydrogeological chemistry reflects certain geology environment where karst water has developed. This paper study the hydrogeological chemistry elements with Self-Orgnizing Feature Map and determine in karst area. Analyse the hydrodynamic relation among water-taking points according to the near or far relation. Artificial isotope tracing technology in sole borehole is the effect means of research the mobile of groundwater. This paper adopt isotope technology in sole borehole to the study of karst water. Put radioactive isotope ¹³¹I （In the form of NaI） in boreholes and mark the karst water evenly. ¹³¹I in boreholes will flow with groundwater and gather in the backward position, then disperse towards the aquifer. The advanced istopic instrument can detect the change of I concentration. So, the velocity of flow and direction of flow at some point can be computed. This improves the perceiving of the general mobile discipline of karst water.This paper applise comprehensively trace mathematical modeling of karst water, temperature, electrical conductivity tracing, and technology of artificial isotope tracing to the research of hydrogeology conditions. It has been tested in the study of hydrogeology conditions in Jurong pumped-storage power station.更多还原