CAJ | 학술논문

为研究堤坝渗漏初期渗漏通道周围的温度场分布，结合集中渗漏通道自身特点假定渗漏通道为圆柱状，考虑到渗漏通道周围岩土体介质同时存在热对流与热传导两种热量交换形式，建立渗漏流体流动的瞬态温度场模型。根据确定的边界条件和初始条件，用分离变量推导出渗漏通道中的温度分布公式。将该模型应用于北江大堤石角段管涌地区，将实测的温度数据代入模型，反演出渗漏流速。计算结果表明：采用温度场模型反演得到的渗漏流速与同位素示踪法得到的渗透流速结果相近，验证了所建立的模型是可行的。
위연구제패삼루초기삼루통도주위적온도장분포，결합집중삼루통도자신특점가정삼루통도위원주상，고필도삼루통도주위암토체개질동시존재열대류여열전도량충열량교환형식，건립삼루류체류동적순태온도장모형。근거학정적변계조건화초시조건，용분리변량추도출삼루통도중적온도분포공식。장해모형응용우북강대제석각단관용지구，장실측적온도수거대입모형，반연출삼루류속。계산결과표명：채용온도장모형반연득도적삼루류속여동위소시종법득도적삼투류속결과상근，험증료소건립적모형시가행적。
In order to study the distribution of temperature fields around the leakage passage in the early period of dam seepage, the concentrated leakage passage can be regarded as a circular column based on its own characteristics. Based on two heat exchange patterns, heat conduction and heat convection in rock and soil media around the leakage passage, a transient temperature field model for dam seepage is established. According to the determined boundary and initial conditions, an equation for the temperature distribution in the leakage passage is derived by the separation of variables. The model is applied to the piping area of Shijiao reach of Beijiang Levee. The measured temperature data are substituted into the model, and the seepage velocity is obtained. The calculated results show that the seepage velocity obtained from the temperature field model is close to that gained from the isotope tracer method, and the feasibility of the proposed model is validated.