Determination of mine fault activation degree and the division of tectonic stress hazard zones-Reference-Cited by-同舟云学术

Determination of mine fault activation degree and the division of tectonic stress hazard zones

Published:2024-05-30 Issue:1 Volume:14 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

Lan Tianwei,Liu Yonghao,Yuan Yongnian,Fang Ping,Ling Xiangdong,Zhang Chuang,Li Yabin,Li Yang,Feng Wei

Abstract

AbstractThis article conducts a comprehensive study on the activation characteristics of faults in the mine and analyzes the distribution patterns of the original rock stress field. Through quantitative research and analysis, we determine the partitioning characteristics of tectonic stress in the mine field under the dual effects of fault activation and original rock stress. The study also reveals the significant impact of different fault activation characteristics and different tectonic stress partitions on the stability of roadway surrounding rock. Using the Mohr–Coulomb strength criterion as a foundation, we investigate the mechanisms of fault activation and establish a mathematical model for fuzzy comprehensive evaluation. This model enables us to determine the strength level of fault activation in coal seam 9 of the Limin coal mine and construct a geological structure model. It has realized the transformation of fault activation degree from qualitative evaluation to quantitative evaluation. The stress state analysis software is used to draw the division of tectonic stress dangerous areas under the synergistic effect of fault activation and original rock stress. We then analyze the impact on the stability of roadway surrounding rock in these different hazardous areas. Utilizing the fuzzy comprehensive evaluation method, we take into account the impact of faults on the distribution characteristics of stress fields and the stability of roadway surrounding rock. This approach enables us to more accurately and comprehensively determine the hazardous areas of tectonic stress in the mine field under the dual effects of faults and original rock stress.

Funder

This research was financially supported by the LiaoNing Revitalization Talents Program

Liaoning Provincial Education Department Basic Scientific Research Project

National Natural Science Foundation of China

Publisher

Springer Science and Business Media LLC

Link

https://www.nature.com/articles/s41598-024-63352-w.pdf

Reference27 articles.

1. Zheng, S. 3D geostress field distribution and roadway layout optimization in Sihe Mine. J. China Coal Soc. 35(05), 717–722 (2010).

2. Li, P. & Miao, S. Analysis of the characteristics of in-situ stress field and fault activity in the coal mining area of China. J. China Coal Soc. 41(Sup2), 319–329 (2016).

3. Kang, H., Jiang, T., Zhang, X. & Yan, L. Research on in-situ stress field in Jincheng mining area and its application. Chin. J. Rock Mech. Eng. 28(1), 1–8 (2009).

4. Kang, H., Tin, D., Gao, F. & Lv, H. Database and characteristics of underground in-situ stress distribution in Chinese coal mines. J. China Coal Soc. 44(1), 23–33 (2019).

5. Han, J. & Zhang, H. Characteristic of in-situ stress field in Huainan mining area. Coalf. Geol. Explor. 37(1), 17–21 (2009).