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利用温度场连续分布监测成果反馈渗流场,能够克服传统渗流场点式监测的不足。通过实验室筑建均质土坝模型,并在模型内敷设分布式测温光纤及测压管等,同步获取渗流场与温度场信息。通过理论分析均质土坝温度场分布及变化与渗流梯度、水土温差、渗透系数、导热系数、比热以及时间等因素的关系,构建了均质土坝温度场反馈渗流场的数学模型,并进行了室内试验成果验证分析,实现了由温度场信息反馈渗流场信息。研究成果表明:土坝温度场信息推求渗流场信息是可行的,构建的土坝温度场反馈渗流场的数学模型是成立的。
The use of temperature field to continuously distribute monitoring results feedback seepage field can overcome the deficiency of traditional seepage field point monitoring. By building a homogeneous earth dam model in the laboratory and laying distributed temperature measurement optical fiber and piezometric tube in the model, the seepage field and temperature field information are obtained synchronously. Through the theoretical analysis of the relationship between the distribution and change of temperature field of homogeneous earth dam and the seepage gradient, the temperature and water temperature, the permeability coefficient, the thermal conductivity, the specific heat and the time, the mathematical model of the feedback field of the homogeneous earth dam temperature field is established. The indoor test results were verified and analyzed, and the information of seepage field was fed back by the temperature field information. The research results show that it is feasible to deduce the seepage field information from the information of temperature field of earth dam. The mathematic model of temperature field feedback seepage field is established.