Research on integral structure reinforced arch of surrounding rock of underground silo
QIANG Ding
FAN Yuehu
ZHOU Hongbo
JIA Xiyong
CAO Longbo
LYU Yang
Abstract：Rock burst and high kinetic energy refuse impact will lead to the damage of the raw coal bunker wall protective lining plate,reinforced concrete failure and surrounding rock collapse.In order to solve the damage caused by bulk refuse to the lining plate,the prestressed metal microcrystalline ceramic composite lining plate was designed,and the integral structure reinforced arch was formed with micro-expansion high-strength grouting material and surrounding rock anchor.This design not only improves the mechanical properties and stress state of the surrounding rock in the anchoring area,but also controls the deformation and failure of the surrounding rock,and effectively resists the shear expansion and collapse of the surrounding rock caused by rock burst.By establishing a mathematical model between the expansion stress and the expansion rate of high strength grout and the thickness factor of the expansion medium,a method was provided for the designability of the expansion stress.
Keywords：integral structure reinforced archstabilizerprestressed mediumprestressed ceramet lining plateregression equation
Publication Date：2024-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 54-58,31 )