Research on Tunnel Supporting Time Based on Virtual Supporting Force
(1 State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008; 2 School of Mechanics & Civil Engineering, China University of Mining & Technology, Xuzhou 221008)
Abstract：
Based on the Beigushan Tunnel, this paper analyzes the support effects on a tunnel under different load release factors. Combined with the mechanism of advanced grout reinforcement, the stability of rock mass and mechanical features of the support structure were comparatively analyzed considering the different support times in the case of advanced grouting or without advanced grouting. The best time for primary support is proposed.
YANG Ling-1,
2 ,
HAN Li-Jun-1 etc
.Research on Tunnel Supporting Time Based on Virtual Supporting Force[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(1): 66-71
2012, Vol. 49 