水利信息化Issue(2)：56-63,8.DOI:10.19364/j.1674-9405.2025.02.010
堆石坝内部二维变形一体化分布式监测技术试验研究
Experimental research on integrated distributed monitoring technology of two-dimensional deformation in rockfill dam
摘要
Abstract
With the rapid development of dam construction technology in China,traditional measurement methods are no longer able to meet the technical requirements for internal deformation monitoring of high rockfill dams.Therefore,it is urgent to improve the monitoring technology for internal deformation of rockfill dams.The two-dimensional integrated distributed monitoring technology was used to convert the horizontal displacement and settlement deformation between adjacent measurement points into optical fiber strain within the monitoring unit.Various indoor tests under different conditions were conducted to adjust the two-dimensional displacement conditions of the sensing fiber.The monitoring effects of V-type and X-type fiber layout methods were compared.The absolute errors of horizontal displacement and settlement values in 47 test monitoring units under both fiber layout methods were at the millimeter level,with the root mean square errors of horizontal displacement and settlement values being smaller in the X-type fiber layout.The actual internal deformation observation data from rockfill dam engineering cases were analyzed,and continuous indoor section monitoring simulation tests were carried out.The indoor two-dimensional deformation integrated monitoring test results under both fiber layout methods showed high consistency with the curve forms of the internal deformation data of the rockfill dam measured on-site.The research results improve the accuracy of the distributed optical fiber two-dimensional deformation monitoring technology,verify the feasibility of the optical fiber protection structure,and provide a reference for applying this technology to internal deformation monitoring of rockfill dams.关键词
二维变形监测/一体化/分布式光纤传感技术/布里渊光时域分析技术/室内试验/误差分析/堆石坝Key words
two-dimensional deformation monitoring/integration/distributed optical fiber sensing technology/Brillouin optical time-domain analysis/indoor test/error analysis/rockfill dam分类
水利科学引用本文复制引用
吴哲辉,何宁,姜彦彬,孔洋,槐伟..堆石坝内部二维变形一体化分布式监测技术试验研究[J].水利信息化,2025,(2):56-63,8.基金项目
国家重点研发计划项目(2022YFC3005502) （2022YFC3005502）
水利部水库大坝安全重点实验室开放基金项目(YK323008) （YK323008）
南京水利科学研究院研究生学位论文基金项目(Yy324004) （Yy324004）
