Optimization Design of Support Parameters for Deep Buried Coal Seam Stoping Roadway
The deep part coal seam is affected by high ground stress and mining induced stress,the roadway surrounding rock is broken and loose,and the problem of support is more prominent.The deformation speed of the surrounding rock is fast and the continuous deformation time is long.Taking the support scheme of the 3103 track crossheading in Gucheng Coal Mine as the research object,the support parameters are optimized through numerical calculation.The"strong+weak+unloading"three-in-one comprehensive surrounding rock control technology is adopted,which includes strong support and strong protect on the top side of the roadway,weak support and weak protect on the floor,and surrounding rock drilling pressure relief.The deformation amount of the roadway surrounding rock is reduced,and the support effect of the two sides is relatively obvious.The deformation amount of the surrounding rock is reduced by 37％and 14％,respectively,the optimized support scheme meets the safety production requirements of coal mines and ensures the safety and reliability of the roadway during the excavation period.
万方数据
维普
