Abstract
In order to develop a better procedure for reducing the cost of construction of underground openings, the authors focus on the cablebolting. A field experiment was conducted during constructing an underground powerhouse to investigate how cablebolts work for pre-reinforcement of rock mass. It is found that cablebolting has a potential to control the rock displacement in the vicinity of the cavern wall due to excavations. The mechanism of the effect of cablebolts is also discussed by numerical simulations on the basis of filed measurement results.
