大倾角巷道围岩支护方案优化及控制

Scheme Optimization and Control of the Surrounding Rock Support of the Big Dip Angle Roadway

煤矿巷道变形对煤矿安全来说至关重要,尤其是对于大倾角巷道变形控制,更是研究的难点所在。本文基于FLAC3D数值模型,对巷道断面形状优化成为偏心的圆拱形,并针对圆拱形巷道选取了合适的支护方案,对此方案在相关巷道进行变形监测。根据监测结果,支护方案能够满足巷道围岩变形控制。

Coal mine roadway deformation is very important for coal mine safety,especially for the deformation control of large inclination tunnel.Based on FLAC 3D numerical model,roadway cross section shape will be optimized into the eccentric circular arc form,and the suitable support scheme of roadway of circular arc form is selected,and roadway deformation monitoring for this scheme is made.According to the monitoring results,the support scheme can meet the deformation control of roadway surrounding rock.