关键词: 浸润线监测; 蛇形分布式光纤; 定位试验; 堤防工程;

Abstract: In the monitoring of embankment seepage line, most of the traditional optical fiber distribution patterns adopt linear arrangement, which seriously affect the monitoring results because of the limitation of optical fiber positioning precision technology.In order to improve the positioning accuracy of embankment seepage line, a new type of snake-shaped distributed optical fiber was designed and manufactured for monitoring embankment seepage line according to the positioning characteristics of the temperature measurement optical fiber.The relationship between length of the new distributed optical fiber and position of seepage line is determined by simulating the monitoring of embankment seepage line through water depth measurement test.The comparison of the calculated water depth and the actual water depth show that the error between the two is within 3%,which verifies that the snake-shaped distributed optical fiber has a higher positioning accuracy.

Key words: seepage line monitoring; snake-shaped distributed optical fiber; location test; embankment project;