Open AccessStudy on the influence of angle of bedding plane on stability of roadway surrounding rock in layered mass
Author(s) -
ZhiKang Xu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/2/022014
Subject(s) - bedding , bed , geology , deformation (meteorology) , geotechnical engineering , displacement (psychology) , rock mass classification , magnetic dip , vertical displacement , plane (geometry) , geometry , anisotropy , geomorphology , optics , psychology , oceanography , physics , geophysics , horticulture , psychotherapist , biology , mathematics
In view of the large deformation in the roadway of layered surrounding rock, with W22602 return air roadway of Datong No.1 Mine as the engineering background, using the finite-difference software FLAC3D, we explored the influence of the angle of the bedding plane under the prestressed bolt support on the plastic zone and the stress and strain distribution law of the surrounding rock of the roadway, and analyzed the deformation and failure characteristics of the bedding plane under the action of the bolt. The results show that: with the increase of the inclination of the bedding plane, the horizontal and vertical deformation of the bedding plane first increase and then decrease, showing a “Λ”-shaped change characteristic; in horizontal layered surrounding rock, as the prestress of bolt support increases, the strength of the weak rock layer gradually increases, and the surface displacement of the bedding plane gradually decreases; the plastic zone of the surrounding rock with different dip angles has a significant “angle effect”, and the angle between the bolt and the bedding surface has a significant difference in the control effect of the bedding plane; based on the simulation results when the inclination angle is 15°, field practice is carried out. And it shows that the optimization scheme can improve the stability of the surrounding rock of the roadway more economically and effectively.