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[1]WEI Xiaogang,YANG Liuchuan,LIU Huili,et al.Research on Influence Factors of the Seismic Dynamic Instability of Coal Mine Roadway and Surrounding Rock Structure[J].Journal of Seismological Research,2021,44(02):233-241.

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Research on Influence Factors of the Seismic Dynamic Instability of Coal Mine Roadway and Surrounding Rock Structure

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 44 Number of periods: 2021 02 Page number: 233-241 Column: Public date: 2021-06-30

Title:: Research on Influence Factors of the Seismic Dynamic Instability of Coal Mine Roadway and Surrounding Rock Structure

Author(s):: WEI Xiaogang¹; 2; YANG Liuchuan¹; 3; LIU Huili¹; 3; WEI Yaqiang⁴; HUANG Daoshun⁵; LI Guanghui¹; HU Zhikai⁶; QIN Sai⁶; GAO He⁷; (1. College of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, Henan, China)(2. Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administratio

Keywords:: dynamic instability; surrounding medium; earthquake motion; coal mine roadway; numerical simulation

CLC:: P315.9

DOI:: -

Abstract:: Aiming at the influence factors of seismic dynamic instability of the coal mine roadway and the surrounding rock structure,and by the help of the finite element analysis software,ANSYS/LS-DYNA,we analyze the failure process of the coal mine roadway and the surrounding rock structure which are subjected to El Centro earthquake wave,and focus on the influence of section form,embedment depth of the roadway,and the ground stress etc.on the dynamic response of the roadway itself.We find that the aseismatic behavior of the roadway with circular cross section is far better than that of the roadway with arch section or rectangular cross section.The deeper the buried depth of the roadway is,the weaker the collaborative deformation capacity of the roadway and the surrounding rock structure will be,and the more prone to failure they will be.As the buried depth of the roadway increases,cross section forms’ influence on the dynamic instability of the roadway is declining.Further,the roadway’s weak parts,such as roof,shoulder and waist are prone to tensile cracking,so,anchoring measures are necessary to ensure the dynamic stability of the roadway.

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Last Update: 2021-06-30