关键词: 深部巷道, 喷锚网支护, 数值模拟

Abstract: Compared with the traditional shed supporting，the bolting can fully improve the roadway maintenance status and maintain long-term stability of tunnel，which is conducive to improve the mining efficiency and productivity.Surrounding rocks loosening in Jinchuan mining roadway easily results in rheology.Under the metal stents，the relative displacement of roof and floor，two sides is 300~500 mm，100~200 mm in light，more than 1 000 mm in severe.The roadway with bolting support，must have higher support strength to control the deformation of surrounding rock.With the explored resources in Jinchuan mining area consumed，most of the stope depth is more than or approaching to 600 m，thus resulting in ground pressure increasing and seriously deformation of roadway.Contradiction for the spurting-bolt-mesh support parameter usually used in shallow roadway in deep roadway begins to appear.In view of deep roadway supporting parameters and deformation characteristics in Longshou Mine，the numerical simulation study on the spurting-anchor-net supporting parameters of deep roadway is made.Through the simulation study on the anchor length and shotcrete thickness，it is concluded that in spurting-bolt-mesh support process of deep roadway in Jinchuan mine，the supporting proposal of the anchor length increasing to 3 m with the shotcreting thickness of 200 mm，the space interval at 1.5 m × 1.0 m can effectively maintain the stability of the roadway.

Key words: Deep roadway, Spurting-bolt-mesh support, Numerical simulation