摘要
坝体发生渗漏时,渗漏通道与附近的介质岩体产生热传递,使渗漏通道与岩体温度有规律地改变。利用热传导理论对抽象的线热源模型进行定量分析,确定坝体渗漏水体流速,从而准确地掌握渗漏程度,有效防范坝体安全事故的发生。基于坝体渗漏抽象化模型,运用热流体知识对关键参数进行分析求解。依据工程实测数据定量地计算出渗漏通道的水体流速和通道半径,并与钻孔实测通道流速进行对比,两者结果基本一致,证明了该方法的准确性和有效性。
When a dam has a concentrated leakage passage, the heat exchange between groundwater and rock media will occur around leakage passage and this leads temperature altering regularly in the stratum near leakage passage. In order to ascertain the dam water flow rate, the theory of heat conduction of the abstract line heat source model of quantitative analysis was used. In this way, we could accurately grasp the degree of leakage, which would effectively guard against the dam safety accidents. Based on dam seepage abstract model, it utilized the knowledge of thermal fluid flow to get the key parameters. Based on the measured data, the leakage of channel water flow velocity and the radius could be calculated quantitatively. Compared with drilling measurement channel flow velocity, the conclusions were basically identical, which proved the accuracy and effectiveness of the method.
出处
《人民黄河》
CAS
北大核心
2016年第3期112-115,119,共5页
Yellow River
基金
河南省科技攻关项目(132102210003)
关键词
坝体渗漏
热传导
等温面
热流密度
dam leakage
heat conduction
isothermal level
thermal flux
