Studying the reasonable roadway layout under the condition of high stress soft rock

摘要

During mining the high stress soft coal seam, usually adopted traditional method should leave large width coal pillar, which cause severe loss of coal resources, at the same time due to the system stiffness of the high stress soft rock roadway surrounding rock is very low, the plastic deformation is severe, which lead to roadway becomes it difficult to excavation and maintenance. However, when adopted stagger arrangement mining method can solve these problem. This paper combined with actual mining situation of 2 # high stress soft rock coal seam of Shanxi coking coal Fen-xi mine mining group, through theoretical analysis and numerical simulation method to detailed research and analysis. Stagger arrangement roadway layout adopt clever and reasonable layout of roadway, which avoid the influence of high stress soft rock, the excavation and maintenance of roadway becomes very easy. Compared with the traditional layout of roadway mining method, stagger arrangement can improve condition of roadway surrounding rock, reduce the effects of high stress level, improve the production rate and high security, etc. it has certain reference and application value for coal mining with the similar conditions.