Open AccessTime and Space Evolution Law of Surrounding Rock Deformation under the Influence of Mining
Author(s) -
Lei Chen,
Haolin Zhang,
Jiayan Kang,
Guilong Jia
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/525/1/012022
Subject(s) - deformation (meteorology) , bearing (navigation) , geotechnical engineering , face (sociological concept) , geology , stress (linguistics) , pressure coefficient , range (aeronautics) , overburden pressure , mining engineering , mechanics , computer science , materials science , artificial intelligence , physics , composite material , social science , linguistics , oceanography , philosophy , sociology
Under the influence of mining, the stress of the surrounding rock of the roadway is redistributed, and the surrounding rock of the roadway is deformed. In order to study the change rule of surrounding rock deformation with the advancing process of working face under the influence of mining, according to the field measurement results, the mechanical model of supporting pressure of advance working face and deformation of roadway top is established, and the change rule of time and space is analysed by numerical simulation. The results show that: in different stages of working face pressure, the advance bearing pressure presents different regularity. The peak value of bearing pressure and stress concentration coefficient are the largest when the pressure is applied for the first time, the minimum when the pressure is not applied, and the influence range of bearing pressure is not affected by the period of pressure.