近距离煤层巷道掘进工艺及支护技术

Roadway Driving Technology and Support Technology in Short Distance Coal Seam

为了保证150108胶带巷采空区下近距离煤层掘进安全,提高巷道近距离煤层掘进时顶板稳定性,对支护断面进行优化,采取“注浆锚杆+锚索钢梁+梯形棚”联合支护,未出现顶板破碎垮落,有效保证了巷道安全快速掘进。

In order to ensure the safety of short-distance coal seam driving under the goaf of the 150108 belt roadway and improve the roof stability during roadway short-distance coal seam excavation,the supporting section is optimized and the combined support of"grouting bolt+anchor cable steel beam+trapezoidal shed"is adopted,there is no roof breaking and collapse,which effectively ensures the safe and rapid excavation of the roadway.