摘要
针对现阶段混凝土面板堆石坝面板挠度变形监测存在系统综合误差大、时空数据不连续的问题,提出了将柔性测斜仪应用到面板挠度变形监测中的方法。该方法可准确得到混凝土面板高密度监测点的结果数据,能更好地反映混凝土面板整体挠度变形状况。笔者主要介绍了柔性测斜仪的原理及特点、监测布置与仪器设备安装埋设情况、主要监测数据分析等。由监测结果可见,蓄水期面板挠度时空分布连续性好,测值准确度高,挠度变化及分布规律合理,较好地反映了蓄水期大坝面板挠度变形状况,说明柔性测斜仪适用于面板挠度变形监测,为准确监测面板挠度提供了一种新手段。
In order to solve the problems of large composite error and discontinuous spatiotemporal data in the slab deflection monitoring of concrete face rockfill dam,the flexible inclinometer is applied,which can accurately obtain the data of high-density monitoring points on the concrete slab,and can better reflect the overall deflection status of the concrete slab.This paper mainly introduces the principle and characteristics of flexible inclinometer,monitoring layout,installation of the instrument and monitoring data analysis.Based on the monitoring results,the spatiotemporal distribution of slab deflection is continuous during the impounding period,the measurement accuracy is high,and the change and distribution law of deflection are reasonable.The results have well reflected the deflection status of dam slab during the impounding period,indicating that the flexible inclinometer is suitable for slab deflection monitoring,and providing a new method for accurately monitoring slab deflection.
作者
尚伟
雷霆
樊航三
周建新
袁培进
SHANG Wei;LEI Ting;FAN Hangsan;ZHOU Jianxin;YUAN Peijin(Sinohydro Engineering Bureau 8 Co.,Ltd.)
出处
《大坝与安全》
2025年第2期31-35,共5页
Dam & Safety
关键词
混凝土面板堆石坝
柔性测斜仪
挠度变形
安全监测
数据分析
concrete face rockfill dam
flexible inclinometer
deflection
safety monitoring
data analysis
作者简介
尚伟(1985-),男,湖南长沙人,工程师,主要从事大坝安全监测相关工作。作者邮箱:369009121@qq.com。
