桂林理工大学学报2023，Vol.43Issue(4)：659-665,7.DOI:10.3969/j.issn.1674-9057.2023.04.015
基于长方体模型的大型水库重力变化效应分析
Analysis on gravity change effect of large reservoir based on cuboid model:taking the impoundment process of the Three Gorges Reservoir as an example
摘要
Abstract
The increase in water quality by large reservoirs impoundment will have an impact on the earth inter-nal structure.The change of earth internal structure will change the gravity.The huge water loading caused by the river reservoir after the impoundment of the Three Gorges Reservoir area is bound to respond more obviously to gravity change.In order to study the degree of the gravity change,the formula of the gravity change of the cu-boid is deduced.Based on the formula,the influence of the water load change of the Three Gorges Reservoir on the gravity of the ground station under different water storage heights are simulated.At the same time,with the influence of soil water change,the remote gravity change around the reservoir can be interpolated as the influ-ence of other factors.The results show that the cuboid gravity change formula has good calculation results in the simulation of the gravity change caused by the impoundment process.Among many influencing factors,the im-poundment is the main one.From the influence of soil water change and the interpolation of remote gravity change around the reservoir,the calculation accuracy is improved much.The average absolute error near the stations in three periods from 7,10.4 and 6.5 μGal raised to 4.3,8.1 and 6.1 μGal.At the same time,the cuboid model provides reference for later inversion work.关键词
长方体重力变化公式/三峡水库/蓄水/质量变化/重力变化Key words
gravity variation formula of cuboid/the Three Gorges Reservoir/impoundment/mass change/gravity change分类
天文与地球科学引用本文复制引用
邢云鹏,郭金运,金鑫,刘少明,沈毅,王方建..基于长方体模型的大型水库重力变化效应分析[J].桂林理工大学学报,2023,43(4):659-665,7.基金项目
国家自然科学基金项目(41774001 （）
41374009) （）
