关键词: 锚网索支护, 补强作用, 动压巷道, 支护参数, 优化设计

Abstract: Abstract  Based on the field investigation, the problems of roadways support in Cuijiazhai Mine are analyzed, and overall investigation on the deformation characteristics of surrounding rock under the influence of mining are made.In addition, using bolt-mesh strengthening principle and anchor supplement support theory, the bolt-mesh-anchor support parameters are optimized and the design scheme of support is put forward.The observation results in the field show that the roadways surface displacement are greatly reduced by using the new support scheme, and the intensive deformation of roadway cross-section is effectively controlled.This method can not only speed up the construction of the roadway, but also reduce the cost.The technical measures described in this paper provide a reference for the mines with similar geological conditions.

Key words: Bolt-mesh-anchor support, Reinforcement function, Kinetic pressure tunnel, Support parameter, Optimization design