深厚冲击层井筒冻结段施工技术

Construction technology of mineshaft in freezing section of deep alluvial deposit

结合张双楼矿新副井工程,针对特殊的工程地质条件,介绍了在深厚表土层地区立井施工冻结法的基本工序及注意点,指出施工中应当采取短段掘砌的施工方案,严格控制段高,进而控制井帮暴露时间,以抓住开挖的最佳时机。

Combined with new auxiliary shaft engineering in Zhang Shuanglou coal mine and in light of its special engineering geologic condition, this paper introduces the basic working procedure and attentions of vertical shaft construction by freezing method in deep alluvium district, and points out that man should adopt the construction scheme of short-section shaft sinking and seriously control the bench height in construction, in order to control exposure time of shaft wall and to grasp the optimal time of excavation.