Practice of Reinforcement and Support Technology for Dynamic Pressure Tunnels with Soft Interlayer Compound Roof
The support difficulty of the weak interlayer compound roof roadway under dynamic pressure is relatively high,which not only restricts the balanced production of the mine,but also poses a serious threat to the safety of on-site workers.Based on the engineering background of the surrounding rock support of the leather belt roadway in the 18505 working face of Shanxi Coking Coal Xishan Coal Electricity Xiegou Coal Mine,and in response to the serious deformation of the surrounding rock caused by the mining influence of the adjacent 18503 working face on the weak interlayer compound roof of the belt roadway,this paper analyzes the rock type of the belt roadway roof,the original support parameters of the roadway,and the deformation characteristics of the surrounding rock.Based on this,a reinforcement technology scheme for the weak interlayer compound roof roadway with anchor cables and steel belts as the core is developed and applied in engineering.After on-site application,the serious problem of surrounding rock deformation in the 18505 working face leather belt roadway under dynamic pressure was effectively solved,which not only reduced the amount of roadway repair work,but also improved the safety factor of belt roadway operators during the production period of the working face.
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