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根据江雄水库的坝区地质构造和工程地质状况,通过坝后探测沟的探测结果,发现江雄水库的渗水具有不同的来源,渗漏分布较广。在此基础上,结合钻孔温度探测和地层状况对0+615—0+655段典型渗漏部位进行分析,认为该段渗漏为面状渗漏。研究面状渗漏产生的温度场分布,认为面状渗漏可以看作渗漏平面内垂直于渗漏方向的线热源的叠加,并基于热传导理论和能量守恒原理,推导了面状渗漏热源模型公式。考虑到上述模型在实际应用中存在困难,通过一定的近似简化,提出了基于平面热源法的简化方法,建立了可供于工程应用的简化模型,为工程中复杂的渗漏问题提供了一种新的方法。模型对0+615—0+655段的面状渗漏进行了计算,并将计算结果运用于工程实际,取得了良好的效果,表明其计算结果是可靠的。对模型进行了讨论,分析其优点和局限,认为其能够应用于工程实际的面状渗漏问题的分析和研究,可为类似工程提供借鉴。
According to the geological structure of the dam area of Jiangxiong Reservoir and the engineering geological conditions, the seepage through the dams behind the dam shows that the seepage of the Jiangxiong Reservoir has different sources and has a wide distribution of seepage. On this basis, combined with the borehole temperature detection and stratigraphic conditions, the typical seepage site of section 0 + 615-0 + 655 is analyzed, and the seepage of this section is considered as planar seepage. The distribution of temperature field caused by planar seepage is studied. It is considered that the planar seepage can be regarded as the superposition of linear heat sources perpendicular to the seepage direction in the seepage plane. Based on the theory of heat conduction and the conservation of energy, Model formula. Taking into account the difficulties in practical application of the above model, a simplified method based on the planar heat source method is proposed through some approximate simplifications, and a simplified model that can be used for engineering applications is provided, providing a kind of complex leakage problem in engineering New method The model is used to calculate the surface seepage of 0 + 615-0 + 655 section, and the calculation results are applied to engineering practice, and good results are obtained, which shows that the calculation results are reliable. The model is discussed and its advantages and limitations are analyzed. It is considered that the model can be applied to the analysis and study of the actual surface seepage problem, which can provide reference for similar projects.