A Method to Determine Unstable Point and its Impact Estimation in Debris-Blocking Dam Monitoringsurvey Network

Abstract:

The purpose of this paper is to determine the unstable points of debris-blocking dam deformation network and to lay the foundation for later accurate monitoring and data processing, for the reason that the affection of earth pressure and water-level-fluctuation lead to increased instability to debris-blocking dam. The author signed one horizontal displacement deformation monitoring network, measured two groups data by changing some point’s horizontal displacement with man, judged the point’s stability of the network by the method of mean gap and obtained the deformation model, and analysis the model sensitivity. The results is that the deformation network stability meet the design requirements through application the method in Fengjie Debris-blocking dam which blocked the stones debris for Shirushan tunnel, the actual displacement amount had been proven similar as the result with the method; It is concluded that this method have some practical value in deformation monitoring because it can construct the approximate model by direct observation data, which is smaller rely on other information.

• Periodical: Applied Mechanics and Materials (Volumes 55-57)
• Pages: 698-703
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.55-57.698
• Online since: May 2011
• Authors: Da Bing Huang, Zhi Qiang Yang, Zhen Shi
• Keywords: Debris-Blocking Dam, Impact Estimation, Mean Gap, Monitoring Survey, Unstable

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