Design and Effectiveness of Support Schemes for Tunnels Affected by Mining Influence
In order to reduce the damage of soft coal seam surrounding rock roadway caused by mining and improve the safety of coal seam mining,taking a certain mine as an object,the change law of surrounding rock under the influence of mining in the soft coal seam of the mine is analyzed,and the joint support technology of the roadway is designed as"anchor net spraying+anchor cable beam+grouting".Compared with the unsupported technology,after joint support optimization,the deformation of the roof,floor,and two sides of the mine roadway were reduced by 68.5%,50%,and 61%,respectively,with a significant decrease.This indicates that the combined support technology can effectively control the deformation of the surrounding rock and has a good support effect.
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