大断面煤仓分段掘砌作业法

Sectional Excavation and Masonry in Large Section Coal Bunker

煤矿井下煤仓通常采用混凝土支护方式,为了保证混凝土体质量,在反井钻机施工导孔并扩孔的基础上,提出了分段掘砌作业法,即将整个煤仓分成上、下两段,上分段由上向下刷扩,由下向上砌筑;下分段由下向上刷扩并砌筑。采用该方法,不仅能够保证混凝土体质量,降低了施工风险,而且可提高施工速度,减轻劳动强度,是一种新型快速煤仓施工组织方式。

Coal bunker in mines usually adopts concrete support. To ensure concrete quality,sectional excavation and masonry working method was used on feeding hole and expanding hole with a raise-boring machine. The whole bunker was divided into two sections： upper and lower. The upper section used downward brush expansion and upward masonry and the lower section used upward brush expansion and masonry. The method could ensure the concrete quality, reduce construction risk, speed up construction process, reduce labor intensity, which is a new and fast construction method for the coal bunker.