Study on setting angle of bolt forepoling in surrounding fractured rock
ZHOU Qiao
GAO Qian
XU Hai-tao
Abstract：In order to study its mechanism and bolts parameters in fractured surrounding rock, the ramp 230 of Wupin Zijin Mining Company was taken as example and four similar material models, which were large scale for considering the tunnel or ramp's unpredictability and the surrounding rock pressure's ambiguity, were built. Based on different bolt forepoling of tunnel excavation analogy by similar material, as well as bolt forepoling parameters theory analytic derivation, the selection principle and range of setting angle was researched.
Keywords：fracture strataforepoling boltsetting anglesimilar material model
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1594-1598 )