利用原型观测资料反馈大坝的安全监控指标

Feedback Analysis of Safety-Monitoring Values of Dams with Available In-Situ Measurements

安全监控指标是监测大坝安全的重要指标.笔者利用原型观测资料,以稳定、强度和抗裂为控制条件,提出四种方法(典型监测量的小概率法、安全系数法、一阶矩极限状态法和二阶矩极限状态法)拟定大坝的安全监控指标.文中详细论述了这些方法的原理,同时还应用这些方法和原理拟定某重力坝的安全监控指标.这些指标已用于某坝的安全监控,效果良好.

Using the available in-situ measurements, and using stability, strength and crack-resistance of dams as control criteria, this paper develops four methods (small probability method, Safety factor method, first order moment limit method, and second order moment limit method) to work out safetymonitoring values. The principles of these methods are discussed in details. Monitoring values of a gravity dam are evaluated with these methods and used for monitoring the gravity dam. The results are satisfactory.