光纤光栅用于海水入侵盐度监测初探

来源 :第六届地质(岩土)工程光电传感监测国际论坛 | 被引量 : 0次 | 上传用户:dongfan1909
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海水入侵问题已波及我国沿海的9个省份,其中海水入侵最为严重的山东、辽宁两省入侵面积超过2000km2.在气候变化和人类活动等作用因素的加剧影响下,海水入侵问题不可避免,因此,海水入侵的监测和防治是解决问题的关键,具有十分重要的意义.本文针对目前海水入侵监测技术存在的问题,提出了一种大范围实时原位监测海水盐度的光纤光栅(FBG)方法,并设计试验对三种FBG盐度测试方案的可行性进行了对比研究.试验结果表明:FBG技术应用于海水盐度监测具有一定可行性;利用能量补偿技术的两点串FBG测试效果最佳,灵敏度及稳定性在三种方案中均最好.基于光纤光栅技术的海水盐度监测方法可以弥补目前常用的水化学法和物探法在盐度监测方面存在的不足,为海水入侵的监测和预防提供了一种先进高效的方式和手段.
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