水渗漏是大坝的重要隐患之一 .目前一个有效的在线监测方法是 :用分布式光纤温度传感器沿大坝易于渗水处铺设 .利用有渗水和无渗水处温度之间的差别来监测大坝是否渗水和在何处渗水 .这是一种性能价格比优于其他传感器的有效的在线监测方法 .其特点是 :监测范围大 ,探头结构简 Water leakage is one of the major hidden dangers of the dam.At present an effective method of on-line monitoring is: using distributed optical fiber temperature sensor along the dam easy to seep water laying.Use the difference between seepage and non-seepage water temperature to monitor large Dam seepage and seepage of water, which is a cost-effective alternative to other sensors on-line monitoring method is effective. It is characterized by: a large monitoring range, the probe structure is simple