Numerical Simulation and Experimental Analysis of Roadway Surrounding Rock Loose Circle under Blasting Vibration

Author

Xia Hong-bing ; Xu Ying ; Zhang Yi-jun

Author_Institution

Anhui Univ. of Sci. & Technol., Huainan, China

fYear

2013

fDate

29-30 June 2013

Firstpage

850

Lastpage

854

Abstract

By the finite element method, blasting vibration about deep roadway is simulated in the blast driving process. By regression analysis about the effective stress peak value of the element the results show that the numerical simulation not only reveals the situation of blasting in rock roadway but also shows surrounding loose scope. By detecting instrument of the sonic wave, the change law of loose circle is obtained under dynamic loading of tunnel blasting around the ahead of tunneling in coal mining. Result of the simulation is agreement with the result of the experiment, which provides theory base for the choice of blasting parameter in soft rock driving. That has engineering significance to the blasting driving construction and supporting design.

Keywords

coal; detonation waves; explosions; finite element analysis; mining; regression analysis; rocks; stress analysis; tunnels; vibrations; blast driving process; blasting parameter; blasting vibration simulation; coal mining; dynamic loading; effective stress peak value; experimental analysis; finite element method; numerical simulation; regression analysis; roadway surrounding rock loose circle change law; soft rock driving process; sonic wave instrument detection; tunnel blasting; tunneling; Explosives; Face; Finite element analysis; Rocks; Size measurement; Stress; Vibrations; Blasting Vibration; Driving Blasting; Loose Circle; Numerical Simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Manufacturing and Automation (ICDMA), 2013 Fourth International Conference on

Conference_Location

Qingdao

Type

conf

DOI

10.1109/ICDMA.2013.201

Filename

6598123