基于误差剔除和重标极差法的滑坡水平变形趋势分析  

Analysis of Landslide Horizontal Deformation Trend Based on Error Elimination and Rescaling Range Method

作　　者：王承敏 程涛 WANG Chengmin;CHENG Tao(Shanghai Chengdi Geotechnical Design Co.,Ltd.,Shanghai 200333;School of Civil Engineeringand Architecture,Hubei Polytechnic University,Huangshi Hubei 435003)

机构地区：[1]上海城地岩土设计有限公司,上海200333 [2]湖北理工学院土木建筑工程学院,湖北黄石435003

出　　处：《湖北理工学院学报》2020年第5期33-39,共7页Journal of Hubei Polytechnic University

基　　金：国家自然科学基金面上项目(项目编号:51478201);湖北省自然科学基金面上项目(项目编号:2012FKC14201);湖北省优秀中青年科技创新团队项目(项目编号:T201823);湖北省教育厅重点项目(项目编号:D20134401);湖北理工学院重点项目(项目编号:13xjz03A)。

摘　　要：为准确掌握滑坡水平位移的变形发展趋势,在变形数据误差剔除基础上,利用重标极差法构建了滑坡变形趋势判断模型,即首先利用小波去噪和卡尔曼滤波剔除滑坡水平位移数据的误差信息,并通过模型参数优化筛选来保证误差剔除效果;其次,再利用重标极差法对已处理的变形数据进行趋势判断,以便更好地指导后期灾害防治。实例分析表明:滑坡变形监测数据含有一定的误差信息,小波去噪和卡尔曼滤波均能较好地剔除滑坡水平位移数据中的误差信息,但两类方法的模型参数对误差剔除效果具有较大影响,需进行参数优化筛选,以保证误差剔除效果。同时,通过变形趋势判断分析,得出滑坡水平位移呈持续增加趋势,但其增加速率存在一定波动,且后期变形仍将继续增加,建议加强防范措施。In order to accurately grasp the deformation development trend of the horizontal displacement of the landslide,this paper constructs a landslide deformation trend judgment model based on the error elimination of the deformation data and uses the re-standard range method.Firstly wavelet denoising and Kalman filtering are used to eliminate the landslide horizontal displacement data.The error information is optimized and filtered through model parameters to ensure the error elimination effect;secondly,the re-standard range method is used to judge the trend of the processed deformation data to better guide the later disaster prevention and control.The case analysis shows that the landslide deformation monitoring data does contain certain error information.Both wavelet denoising and Kalman filtering can eliminate the error information in the landslide horizontal displacement data.However,the model parameters of the two types of methods have a greater effect on error elimination.For large impacts,parameter optimization and screening are required to ensure the effect of error elimination;at the same time,through the deformation trend judgment and analysis,it is concluded that the horizontal displacement value of the landslide has a continuous increasing trend,but the increase rate has certain fluctuations,and the later deformation will continue to increase.It is recommended to strengthen preventive measures.

关 键 词：滑坡 水平位移 误差剔除 小波去噪 变形趋势判断 

分 类 号：TU196.1[建筑科学—建筑理论]