Research on Elaborate Construction of Complex 3D Geological Model and In-Situ Stress Inversion

• Published in: Geotechnical and geological engineering Vol. 42; no. 2; pp. 1373 - 1388
• Main Authors: Liang, Juan, Zhu, Quanjie, Sui, Longkun, Duan, Li, Wang, Dacang
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.03.2024; Springer Nature B.V
• Subjects: Civil Engineering; Coal; Earth and Environmental Science; Earth Sciences; Geology; Geotechnical Engineering & Applied Earth Sciences; Hydrogeology; Mathematical models; Normal stress; Original Paper; Software; Standardization; Strata; Stress; Stress distribution; Terrestrial Pollution; Three dimensional models; Waste Management/Waste Technology; Numerical modeling; 3D modeling; Deep mine; Inversion; In-situ stress field; Coal measure strata
• ISSN: 0960-3182; 1573-1529
• DOI: 10.1007/s10706-023-02623-1

In order to obtain the distribution characteristics of the regional stress field in deep coal-bearing strata, a method for constructing a complex three-dimensional geological model and inverting the stress field, integrating multiple software, is proposed. Based on the progressive modeling concept of “point-line-surface-body”, a refined three-dimensional geological model of a target area in a certain mine was constructed using various software. Based on the in-situ stress measurements and numerical simulation results, the stress field of the deep coal-bearing strata was inverted through multiple linear regression. By comparing the measured in-situ stress values and inverted calculation values, an average error of 14.27% was obtained for the inverted normal stress values. The results demonstrate that the proposed method of finely constructing the three-dimensional geological model simplifies the process of organizing and standardizing basic data. The calculation results meet engineering requirements, thereby providing a new means for the inversion of the three-dimensional in-situ stress field in mines.