Study on the Mechanical Characteristics of Surrounding Rock in Excavation | Zendy

Xiaoqian Zhang | Zendy; Chengwu Li | Zendy; Chengmin Wei | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Study on the Mechanical Characteristics of Surrounding Rock in Excavation

Author(s) -

Xiaoqian Zhang,

Chengwu Li,

Chengmin Wei

Publication year - 2021

Publication title -

mathematical problems in engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.262

H-Index - 62

eISSN - 1026-7077

pISSN - 1024-123X

DOI - 10.1155/2021/5537763

Subject(s) - coal mining , coal , heading (navigation) , excavation , front (military) , mining engineering , deformation (meteorology) , face (sociological concept) , stress (linguistics) , geotechnical engineering , stress field , solid mechanics , geology , engineering , structural engineering , mechanical engineering , materials science , sociology , composite material , social science , linguistics , oceanography , philosophy , geodesy , finite element method , waste management

Mine disasters, as associated problems in the development of coal resources, always threaten the life safety of miners and the production safety of enterprises. In coal roadway excavation, the coal in front of the excavation face is in a state of concentrated stress and the deformation is serious. The instability of the coal seam under stress is an important cause of the occurrence of coal and gas outburst. Thus, knowing the mechanical characteristics of surrounding rock in front of the working face is of great significance for deep understanding and effective prevention and control of coal-rock dynamic disasters. By analyzing the characteristics of stress evolution and deformation and failure in front of the heading face, the analytical solution of plastic region distribution in front of the heading face is obtained. According to the established mechanical model, MATLAB numerical calculation software is used to analyze different examples. The influence of different mechanical parameters on the stress state of the working face is studied. The influence parameters of the morphological characteristics of the plastic region are determined, and the change law and characteristics of the plastic region in front of the working face are studied. At the same time, through the characteristics of stress field, the working face dynamic risk assessment of coal and rock dynamic disaster can be realized, which can provide a powerful guarantee for the prevention and control of gas dynamic disasters in deep mine.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research