Application of forepoling bolt and conjoined supporting in surrounding fracture rock of ramp

As for underground engineering, it is the most important to prevent its enclosing rock from collapse, and keep it stability. In this article, how to cut and support in surrounding fractured rock, a way is introduced as follow: Using forepoling bolt, it reinforce the roadway's outline, where the worker can drive and cut in safety, then, permanent supporting such as radial bolting, shotcreting, U-shape channel beam in filling concrete. The practice shows that a engineering example, shows the way is economical and safe.