首页|Investigating the anchorage performance of full-grouted anchor bolts with a modified numerical simulation method
Investigating the anchorage performance of full-grouted anchor bolts with a modified numerical simulation method
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
To reveal the failure mechanism of full-grouted bolting system, revised Pile elements were selected to numerically reveal the anchoring performance of full-grouted anchor bolts. A tri-linear bond-slip model was embedded in the Pile elements. A three-dimensional mining stope was created. A rectangular main roadway reinforced with full-grouted anchor bolts was simulated. Then, the retreat mining method was used to exploit the coal seam. The impact of buried depth, pillar size and shearing strength of the grout/rock contact surface was studied. It showed that the coal seam's burial depth significantly influenced the anchorage performance of the anchor bolts. Moreover, increasing the shearing strength of the grout/rock contact surface was conductive to improving the anchorage performance of anchor bolts and preventing roadway convergence. Simulation results were compared against experimental laboratory test and in-situ observation outcome. It was conductive to revealing the anchorage mechanism of full-grouted anchor bolts under the in-situ condition.
NSTL
Elsevier
