减少初喷回弹的有效途径

Efficient Way Reduced Bounce Substance of the First Jet Concrete

通过对巷道围岩在初喷过程中不同喷层、地面回弹物进行分析 ,找出产生回弹的主要原因和其它因素 。

Through analysing different jet layers and ground bounce substance of tunnel adjoining rock in the course of the first jet concrete.finds out main reasons and other factors made bounce,puts forward efficient way reduced bounce substance.