矿区地表形变时空演化分析方法研究
Study on Spatio-Temporal Evolution Analysis Method of Surface Deformation in Mining Area
陈月娟 1许昕 1黄平平 1孙文卿 2乞耀龙 1谭维贤 1徐伟1
作者信息
- 1. 内蒙古工业大学 信息工程学院,内蒙古 呼和浩特 010080;内蒙古自治区雷达技术与应用重点实验室,内蒙古 呼和浩特 010051
- 2. 中煤平朔集团有限公司,山西 朔州 036006
- 折叠
摘要
用传统监测方法获取的离散点数据只能描述特定时间的空间形变状态,无法反映矿区地表形变整体时空演化.本文介绍了一种矿区地表形变时空模型的构建方法,通过对空间多项式引入时间项变为时空多项式,并基于移动最小二乘法顾及局部特征,提出时空多项式和移动最小二乘法结合完成模型拟合.实验分析表明,选取合适时空项阶次的模型具有良好的拟合精度,实现了对矿区地表形变的时空趋势拟合,能够直观地反映矿区地表形变的整体时空演化趋势和规律.
Abstract
Because the discrete point data obtained by traditional monitoring methods can only describe the spatial deformation state at a specific time,it can not reflect the overall spatio-temporal evolution of surface deformation in the mining area.This paper intro-duces a method for constructing a spatio-temporal model of surface deformation in mining areas.By introducing a temporal term into the spatial polynomial,the spatio-temporal polynomial is transformed into a spatio-temporal polynomial.Based on the moving least squares method,the local characteristics are taken into account,the spatio-temporal polynomial and the moving least squares method are combined to complete the model fitting.The experimental analysis shows that the model with appropriate orders of spatio-temporal term has good fitting accuracy,and realizes the fitting of the spatio-temporal trend of surface deformation in mining area,which can directly reflect the overall spatio-temporal evolution trend and law of surface deformation in mining area.
关键词
地表形变/时空模型/移动最小二乘法/多项式/时空演化Key words
surface deformation/spatio-temporal model/moving least squares method/polynomial/spatio-temporal evolution引用本文复制引用
基金项目
国家自然科学基金地区科学基金(52064039)
自治区直属高校基本科研业务费项目(JY-20220134)
内蒙古自治区自然科学基金(2020LH05006)
出版年
2024
NETL
NSTL
万方数据