带缝坝体安全监控指标研究

本文根据大坝的强度，抗裂和稳定等条件，对带缝重力拱坝监控指标拟定方法进行讨论，重点对典型监测量小概率法中典型监测量的选择和根限状态法中极限状态方程的建立进行详细论述。结构陈村重力拱坝观测资料拟定出监控指标，推求了大坝运行控制水位。计算成果与实际运行控制工况相吻合，为陈村大坝的安全运行提供了科学依据。

Study of Safety Monitoring Index of Dams with Cracks

The safety monitoring index is the base for controlling the safety of dams,which has great significance to ensure safe operation of dams.On the basis of tensile strength,breaking strength and stability,the method is discussed of determining the safety monitoring index of dams with cracks in this paper.Especially,the selection of typical monitoring variation in the method of small probability,and the establishment of ultimate equation in the method of limit equilibrium are described in detail.In the light of prototype observation data of Chen Cun gravity arch dam,the safety monitoring index is determined and the operating level is derived,the results obtained are in good agreement with actual operation.They provide a scientific basis for the safe operation of the dana.