Optimization and Application of Rock-bolting Parameters for High-stress Roadway in Ganzhuang Coal Mine
LU Jingzheng
WEI Fei
MA Peng
YANG Ke
SHI Deqiang
WANG Bo
Abstract：To aim at the non-ideal rock-bolting effect in the high stress roadway in Ganzhuang Coal Mine, the optimization of rock-bolting parameters was carried out by the physical and mechanical experiments and the numerical simulation of coal and rock. Through the analysis on the simulation support effect in different interval, diameter and length of rock bolts and different interval of cable anchors, the optimized parameters of the rock-bolting scheme were obtained:the interval of bolts is 900 mm× 900 mm, the diameter is 22 mm and the length is 2. 2 m, and the interval of the cable anchors is 2 000 mm×900 mm. On-the-spot tests of the optimized rock-bolting scheme were then conducted, and the actual measurements showed that the displacement of the roadway roof reduced by 44. 1% and that of its two sides reduced by 41. 9%, the optimized rock-bolting system can more effectively control the deformation of the roadway surrounding rock and improve the srock-bolting effect.
Keywords：high-stress roadwayrock boltingparameter optimizationphysical and mechanical experimentnumerical simulation
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 49-52,56 )