Ill-conditioned problems of dam safety monitoring models and their processing methods

作     者：GU ChongShi WANG YaChao PENG Yan XU BaoSon 

作者机构：State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China College of Water-conservancy and Hydropower Engineering Hohai University Nanjing 210098 China National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Hohai University Nanjing 210098 China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2011年第54卷第12期

页      面：3275-3280页

核心收录：

学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 51079046, 50909041, 50809025, 50879024, 51139001) the National Science and Technology Support Plan (Grant Nos. 2008BAB29B03, 2008BAB29B06) the Special Fund of State Key Laboratory of China (Grant Nos. 2009586012, 2009586912, 2010585212) the Fundamental Research Funds for the Central Universities (Grant Nos. 2009B08514, 2010B20414, 2010B01414, 2010B14114) China Hydropower Engineering Consulting Group Co. Science and Technology Support Project (Grant No. CHC-KJ-2007-02) Jiangsu Province "333 High-Level Personnel Training Project" (Grant No. 2017-B08037) the Graduate Innovation Program of Universities in Jiangsu Province (Grant No. CX09B_163Z) the Science Foundation for the Excellent Youth Scholars of Ministry of Education of China (Grant No. 20070294023) 

主　　题：dam safety monitoring model ill-conditioned processing method 

摘      要：The focus of this paper is the ill-conditioned problems in the dam safety monitoring model. The reasons to give rise to the ill-conditioned problems in statistical models,deterministic models and hybrid models are analyzed in detail,and the criterions for ill-conditioned models are investigated. It is shown that safety monitoring models are not easy to be ill-conditioned if the number of influence factors is less than seven. Moreover,the models have a high accuracy and can meet the engineering requirements. Another frequently encountered problem in establishing a safety monitoring model is the existence of inflection points,which are often present in the mathematical model for the hydraulic components in deterministic models and hybrid models. The conditions for inflection points are studied and their treatments are suggested. Numerical example indicates that the treatments proposed in this paper are effective in removing the ill-conditioned problems.