新疆平原水库大坝安全监测成果实例分析

Case analysis of dam safety monitoring results for Pingyuan reservoir of Xinjiang

新疆平原水库大坝从建成到现在已运行多年,为了了解该工程目前的运行情况和安全情况,对该平原水库大坝运行多年的监测资料进行了综合分析和安全评价,通过对大坝的变形和渗流的监测分析了解到,目前大坝的最大垂直位移值为1 201 mm,坝基换填砾质土对减小坝基沉降起到了很好的作用,大坝变形已趋于稳定;坝体、坝基的渗压位势从上游向下游逐渐减小,并随时间的推移逐年减小,坝基渗透比降也较小,截渗槽截渗效果也较好,说明渗流较为稳定。结果表明:该平原水库大坝工作性态良好,能够满足正常蓄水及安全运用的要求。

The Pingyuan reservoir of xinjiang has been operating for many years science it was built,in order to understand the operation and current security situation of the project,this paper comprehensively analyzed the monitoring data of the dam operating for years conducted safety evaluation. Through the monitoring of dam deformation and seepage,it was gotten that the maximum vertical displacement of the dam is 1201 mm,the replacement gravelly soil of dam base has good role on reducing dam settlement. The deformation dam body has stabilized; the seepage pressure potential of dam body and foundation decreases from upstream to downstream,and gradually decreases with time lapse. The penetration ratio of dam foundation is smaller. The effect of seepage_intercepting by cutoff seepage tank is good,which indicated that seepage is more stable. The results show that the work state of Pingyuan dam is good and able to meet the requirements of normal water use and safety operation.