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在立井施工中,掘、砌混合作业是一种快速施工方法。采用的施工段高合理与否直接影响围岩稳定,作业安全,横板型式,循环工作组织和凿开设备选择,施工段高是一组重要工艺参数。通过对伞形钻架钻孔分析,得出确保最佳边眼角和最佳边眼开口位置的合理施工段高为3.1至8.4m。
In the shaft construction, excavation, brickwork mixed operation is a rapid construction method. The construction section is reasonable or not with a direct impact on the stability of surrounding rock, operating safety, horizontal plate type, work organization and drilling equipment selection, construction of high is a group of important process parameters. Based on the drilling analysis of the umbrella-shaped drilling rig, it is concluded that a reasonable construction height of 3.1 to 8.4m for ensuring the best edge angle and the optimal edge opening position is obtained.