摘要
丹江口水利枢纽工程采取分期开发方案，初期工程于１９７３年建成。为监视大坝的安全，初期工程设置了各种观测设备，取得了大量资料。目前即将开始进行后期工程。在后期完建工程中，大坝安全监测设计应遵循的几条设计原则是：（１）充分利用初期工程已有的观测成果，针对后期完建工程的施工特点，对重点监测项目和部位进行适当调整；（２）尽量利用初期工程仍然完好的观测设施，在其基础上补充和修改；（３）初期工程已有的监测项目，后期原则上都应保留；（４）后期工程施工期间，库水位较高，在帷幕前或坝基集中渗流带钻孔应特别慎重。针对大坝分期施工特点，对渗流监测、应力、应变及温度监测、水力学监测、动力监测、水文泥沙监测等项目监测设施的布置和初期监测设施的更新改造进行了探讨，可供后期安全监测设计时参考。
Danjiangkou multipurpose water control project is exploited in twostages with its early stage works completed in 1973.Various observation instruments and equipments were arranged in the early stage works for dam safety monitoring,and a lot of observed data have been obtained.The final stage works will start soon and the dam safety monitoring design should obey the following principles:(1)Observed results obtained from the early stage works should be sufficiently used.Important monitoring items and locations of their observation points should be adjusted accordung to the constructional characteristics of the final stage works.(2)Observation instruments and equipments for the early stage which are still available should be used as much as possitile,and it is necessary to implement some new instrumemts and apparatus and improve the existing situation.(3)In principle,the monitoring items conducted before should be kept on in the final stage.(4) because of higher reservoir level during the final stage construction,in front of the curtain or in dam foundation zone where seepage is concentrated boreholes drilling should be done with special caution.Arrangements of monitoring apparatus used for observing seepage,stress,strain,temperature and hydraulic parameters,etc.are investigated.Some problems on renewing and improving monitoring apparatus used in the early stage are also discussed.
出处
《人民长江》
北大核心
1994年第5期30-36,共7页
Yangtze River
关键词
调水工程
安全监测
设计
大坝
Observation of dam safety monitoring Monitoring system System design Danjiangkou Multipurpose Project
