摘要
大坝坝体介质之间的渗流特征与变化规律是综合评价水库安全运行状态的重要指标之一。为克服以往点式测量的不足,采用电成像技术开展大断面多频次监测水位动态变化效果的技术研究。通过布置最佳监测电成像系统,利用数值仿真模拟软件平台构建了不同测试系统下的地电模型,结合监测现场环境特征,分析认为单孔型和跨孔型测试系统更为适合水位的动态监测,并结合室内试验成果有效验证了单孔和跨孔型观测系统监测水位的可靠性。研究结果表明,电成像技术跟踪水位升降具有独特优势,为大坝安全监测提供了新的思路方法。
The seepage characteristics and variation among mediums in dam body is one of the most crucial indicators to evaluate safe operation situation of dam. In order to overcome the shortcomings of point-mode measurement of seepage, the multi-frequency water level dynamic monitoring is studied by electrical imaging technology. The geo-electric model under different measurement systems is constructed by using numerical simulation software and arranging optimal electrical imaging system. Combined with on-site environment characteristics, the electrical imaging water level monitoring simulation suggests that the single-hole mode and hole-crossed mode are suitable to the monitoring of dynamic water-level. The indoor experiments also prove the reliability of single-hole mode and hole-crossed mode. The results show that the electric imaging technology has unique advantage in water level dynamic monitoring, which provides a new method for dam safety monitoring.
作者
谭磊
江晓益
向孟
TAN Lei;JIANG Xiaoyi;XIANG Meng(Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, Zhejiang, China;Zhejiang GuangchuanEngineering Consulting Co . , Ltd . , Hangzhou 310020, Zhejiang, China;Zhejiang Provincial Key Laboratory ofHydraulic Disaster Prevention and Mitigation, Hangzhou 310020, Zhejiang, China)
出处
《水力发电》
北大核心
2019年第8期111-116,共6页
Water Power
基金
水利部技术示范项目(SF-201725)
浙江省水利河口研究院院长基金项目(ZIHE2016014)
浙江省科技厅重点研发项目(2017C03008)
浙江省科技厅院所扶持专项项目(2016F50003)
关键词
渗流特征
电成像技术
数值模拟
安全监测
seepage characteristic
electric imaging technique
numerical simulation
safety monitoring
