Supporting Technology of Uncovering Coal in Deep Developing Roadway

In the construction of uncovering and passing coal seam in developing roadway, the traditional passive supporting such as shed shoring supporting is not only high in price and slow in construction speed, but also has unsatisfactory supporting effect. In the uncovering coal construction of 2517 belt haulage roadway (rock roadway section) in Chensilou Coal Mine. Slotted tube bolt is adopted as advanced supporting, the bolting and shotcreting are adopted as permanent supporting, which prevents the caving of coal and rock and achieves safely and fast uncovering coal in deep roadway.