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基于灰色模型及其改进模型的土石坝沉降预测
引用本文:沈毅,郭金运,周俊,于红娟.基于灰色模型及其改进模型的土石坝沉降预测[J].淄博学院学报(自然科学与工程版),2014(1):6-9.
作者姓名:沈毅  郭金运  周俊  于红娟
作者单位:[1] 山东科技大学测绘科学与工程学院,山东青岛,266590 [2] 中国葛洲坝集团股份有限公司测绘工程院,湖北宜昌,443002
基金项目:国家自然科学基金资助项目(41374009);山东省自然科学基金资助项目(ZR2013DM009)
摘    要:考虑到土石坝沉降变形因素的复杂性以及GM (1,1)灰色模型基于贫信息数据所表现出来的优势,由大坝实测数据拟合构造GM (1,1)模型。为了进一步提高大坝沉降变形的预测精度,对原始GM (1,1)模型分别进行了考虑不同数据对预测结果有不同影响的加权改进和利用指数函数变换来提高原始数据光滑度的改进。实例应用表明,加权改进的GM (1,1)模型和函数变换改进的GM (1,1)模型的预测精度均优于原始GM (1,1)模型。

关 键 词:土石坝  沉降预测  灰色模型  加权GM  (1    1)模型  函数变换

Subsidence prediction of earth and rockfill dam based on gray model and i ts improved models
SHEN Yi,GUO Jinyun,ZHOU Jun,YU Hongjuan.Subsidence prediction of earth and rockfill dam based on gray model and i ts improved models[J].Journal of Zibo University(Natural Sciences and Engineering),2014(1):6-9.
Authors:SHEN Yi  GUO Jinyun  ZHOU Jun  YU Hongjuan
Institution:SHEN Yi, GUO Jinyun, ZHOU Jun, YU Hongjuan
Abstract:Considering the complexity of earth and rockfill dam and the application of the gray model in the prediction of the dam deformation with poor information ,we constructed a GM (1 ,1) model based on the actual observation data of the dam .To increase the accuracy of prediction ,a weighted GM (1 ,1) model was put forward considering the effect of different data on the predic-ting results .Another improved GM (1 ,1) model was built with exponent function transformation to improve the smoothness of original datas .The pratical case showed that the prediction preci-sions of the two improved models are higher than that of the original one .
Keywords:earth and rockfill dam  settlement prediction  gray model  weighted GM (1  1) mod-el  function transformation
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