Impact of Depressurizing Boreholes on Energy Dissipation in Deep Roadway

Figure 5

Numerical model containing depressurizing boreholes in FLAC^3D. (a) Illustrates the cross section of one rib along the longitude direction of roadway. The distance between the neighboring boreholes in the heading direction of roadway was defined as row spacing , while that in the direction perpendicular to the roof and floor was termed as interspacing . The interspacing was fixed as 1.2 m, while and were chosen as the variables in this study. and will be constructed according to the design schemes.