Research and application of supporting technology of fractured rock roadway with high stress of deep ground in Jinchuan mining area
-
-
Abstract
According to the problems of large deformation, difficult supporting and short repair cycle in the deep roadway which has a high stress level, its surrounding rock is fractured.Based on the deformation and failure characteristics of roadway, the reason of deformation and failure of fractured rock roadway with deep high stress is analyzed from three aspects, including engineering geological condition, ground stress characteristics and mining influence.Aiming at the typical failure characteristics and conditions of engineering geological, four new supporting types were proposed and industrial tests were carried.Based on the monitoring of convergence deformation, the supporting effect of new supporting methods is verified.The results show that the deformation of the fractured rock roadway under high stress can be effectively controlled with the new supporting methods and the aim for long-term stability of the roadway surrounding rock are realized.
-
-