考虑气象因素影响的大坝监测沉降小波分析

›› 2010, Vol. 31 ›› Issue (3): 811-814.

考虑气象因素影响的大坝监测沉降小波分析

张琦伟¹，袁鸿鹄²，王芝银²，朱鸿雪²，宫晓明¹

1. 北京市水利规划设计研究院，北京 100044；2. 中国石油大学城市油气输配技术北京市重点实验室，北京 102249

收稿日期:2009-07-21 出版日期:2010-03-10 发布日期:2010-03-31
作者简介:张琦伟，男，1964年生，博士，地质所所长，主要从事水利水电工程地质方面的科研工作。

Wavelet analysis of monitoring dam settlement considering effects of meteorological factors

ZHANG Qi-wei¹，YUAN Hong-hu²，WANG Zhi-yin²，ZHU Hong-xue²，GONG Xiao-ming¹

1. Beijing Municipal Institute of Hydraulic Engineering Planning Design and Research, Beijing 100044, China; 2. Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China

Received:2009-07-21 Online:2010-03-10 Published:2010-03-31

摘要/Abstract

摘要：

为了消除大坝沉降监测数据受温度、湿度及光照等气象因素及外界不确定因素的噪声响应，提出考虑气象因素影响的大坝监测沉降小波分析方法。首先建立原始监测数据与各气象因素的函数关系，进而消去气象因素对坝体沉降的影响，然后采用小波分析对监测数据进行去噪处理，最后得到大坝真实的荷载响应沉降曲线，为大坝稳定性评价提供依据。实例应用表明，考虑气象因素影响的大坝监测沉降小波分析方法能有效地去除气象因素及外界不确定因素引起的噪声响应，比小波直接去噪法效果更佳，与数值模拟计算值能较好地吻合，具有更好的实际应用价值。

关键词: 大坝监测沉降, 小波分析, 气象因素, 去噪处理

Abstract:

The monitoring data of dam settlement are usually disturbed by uncertain factors and meteorological factors such as temperature, air humidity and light intensity. In order to remove those factors, a new method of wavelet analysis considering the effects of meteorological factors for dam settlement is proposed. Firstly, the functional relation between the monitoring data and the meteorological factors is established. And then based on the functional relation, the effects of meteorological factors on the monitoring data of dam settlement can be removed. Finally, based on the de-noising process of monitoring data by wavelet analysis, a dam settlement curve that is close to the practical situation can be obtained, which can provide dam stability evaluation with scientific basis. The results show that the new method of wavelet analysis considering the effects of meteorological factors is better than the method of direct wavelet analysis; and it can effectively remove noise signal caused by meteorological factors and other uncertain factors; and the dam settlement processed in this method agrees well with the numerical simulation results; and it has better feasibility and practical application value.

Key words: dam settlement monitoring, wavelet analysis, meteorological factors, de-noising processing

中图分类号:

TU 459

张琦伟，袁鸿鹄，王芝银，朱鸿雪，宫晓明. 考虑气象因素影响的大坝监测沉降小波分析[J]. , 2010, 31(3): 811-814.

ZHANG Qi-wei，YUAN Hong-hu，WANG Zhi-yin，ZHU Hong-xue，GONG Xiao-ming. Wavelet analysis of monitoring dam settlement considering effects of meteorological factors[J]. , 2010, 31(3): 811-814.

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