小湾拱坝应力监测资料分析

小湾水电站以发电为主,兼顾防洪、灌溉和库区水运等.坝址处河谷基本对称,河谷深切呈"V"字型.为深入研究小湾拱坝坝体的动、静工作性态,对小湾拱坝坝体进行应力监测;根据应力监测资料进行徐变应力计算,得到实际应力,然后利用作图、特征值统计等定性时空分析方法推断出大坝应力无明显异常;通过分析统计结果以及压应力变量分离模型得到了应力的统计模型.

Analysis of Stress Monitoring Data of Xiaowan Arch Dam

Xiaowan Hydropower Station is operating to mainly generate electricity,also take into account flood control,irrigation,water transport in the reservoir area,etc.. In the dam site,the valley is basically symmetric,and the incised valley is shaped a ＂ V＂. For further study of the dynamic and static working state of Xiaowan arch dam body,the stress of the dam body was monitored. Based on the stress monitoring data,the creep stress was calculated,and the actual stress was obtained in this way. Then the qualitative timespace analysis methods such as mapping,characteristic value statistics,etc. were used to infer that the dam stress had no obvious abnormalities. By analysis results and the variable separation model of compressive stress,the statistical model of stress was obtained.