三峡大学学报（自然科学版）2024，Vol.46Issue(3)：15-22,8.DOI:10.13393/j.cnki.issn.1672-948X.2024.03.003
基于优化支持向量回归的磨古倾倒变形体参数反分析研究
Inverse Analysis of Mechanical Parameters of Mogu Toppling Deformed Slope Based on Improved SVR Model
摘要
Abstract
The determination of geotechnical parameters will directly affect the analysis and judgment of the stability of the toppling deformation body.The in-situ monitoring data can effectively get the geotechnical parameters of the toppling deformation body.In this paper,for the Mogu dumping deformation body of Yalong River Lianghekou reservoir area,the MPA-SVR model is constructed to back analyze the geotechnical parameters.The inverse analysis results can provide an important data basis for the stability analysis of the deformed body,and the mechanical parameters applicable to the fracture zone of the Mogu toppling deformed body in the Lianghekou reservoir area can be obtained by using the on-site safety monitoring data of the toppling deformed body as the input information.The results show that the different elevation monitoring points have similar deformation trend,the deformation rate is consistent with the water level change trend,and the deformation has not yet fully converged.With the advancement of the staged water storage process,the hydrodynamic effect of the dumping deformation body is obvious,and the mechanical parameter of the folded zone obtained by the inverse analysis decreases gradually.The cohesive force of the zone decreases by 3.68%from the second stage to the third stage of the storage,and the mechanical parameters of the zone decrease by 3.7%.From the second stage to the third stage of water storage,the cohesive force of the fracture zone decreased by 3.68%,and the angle of internal friction decreased by 1.98%.关键词
MPA-SVR模型/磨古倾倒变形体/力学参数/反分析Key words
MPA-SVR model/Mogu toppling deformed slope/mechanical parameters/inverse analysis分类
天文与地球科学引用本文复制引用
许晓逸,张贵科,陈世壮,邓韶辉,王如宾,张海龙..基于优化支持向量回归的磨古倾倒变形体参数反分析研究[J].三峡大学学报（自然科学版）,2024,46(3):15-22,8.基金项目
国家自然科学基金重点项目(51939004) （51939004）
国家重点研发计划项目(2017YFC1501100) （2017YFC1501100）
雅砻江流域水电开发有限公司科技项目(000023-21XB0022) （000023-21XB0022）
