风氧化带附近软岩顶板特大断面切眼施工技术

Near Wind Oxidization Zone Soft Rock Roof Supergiant Cross-section Cut Hole Driving and Supporting Technology

针对张集煤矿首个位于风氧化带附近的特大断面切眼(8000 mm×3400 mm)施工,采取高强度锚梁网加大密度挑棚的联合支护技术和导硐法分次掘进技术施工,取得了成功。该技术创新不但为张集煤矿今后6煤大断面掘进支护提供了技术支撑,同时也可为淮南矿区类似条件下特大断面切眼施工提供良好的技术借鉴。

Aimed at the first construction of the supergiant cross-section cut hole in the near wind oxidization zone of Zhangji Coal Mine,it is successful to adopt high strength anchor net canopy support technology and driving graded construction.This technical innovation is provided not only for Zhangji Coal Mine in the six lager cross-section driving support,but also for the similar condition in the Huainan Mining Area.