摘要
为弥补地应力测量不能详尽反映区域地应力场规律的缺陷,基于套孔应力解除法实测地应力资料,提出了改进的多元线性回归理论,对地下岩土工程初始应力场进行了反演分析,探究了利用FLAC^(3D)应力边界组合来重构初始应力场的方法,结合龙门山矿区地应力测量工程实例,建立了三维实体矿岩模型,给出了该区域初始应力场反演的实现步骤。研究结果表明,改进的多元线性回归理论能合理契合实测地应力场,采用应力边界组合重构初始应力场的方法可行。
To improve that in-situ stress measurement can＇t reflect regional stress field rules exhaustively, an improved multiple linear regression theory was proposed based on the in-situ stress data measured by overcoring stress relief meth- od. Inversion analysis was carried out for the initial stress field of underground geotechnical engineering, and a method of FLAC^3D stress boundary combination was used to recon- struct the initial stress field. Combined with practical exam- ples in Longmenshan mine, a three-dimensional model of solid and ore was established, and detailed inversion steps of the initial stress field were introduced. The results showed that the improved multiple linear regression theory could reasonably fit the measured stress field, and the new method is of great practical value.
出处
《矿业研究与开发》
CAS
北大核心
2014年第1期11-15,共5页
Mining Research and Development
关键词
初始应力场
反演分析
FLAC^3D
应力边界法
重构
Initial stress field, Inversion analysis, FLAC^3D,Stress boundary method, Reconstruction
