箕斗装载硐室冻结法施工实践——以鹰骏一号煤矿主立井井筒冻结工程为例

Construction Practice of Freezing Method in Skip Loading Chamber—Consider the Yingjun No. 1 Coal Mine Main Shaft Freezing Project

摘要: 在煤矿主立井箕斗装载硐室掘砌施工环节，安全风险问题颇为棘手。本文选取鹰骏一号煤矿主立井工程作为重点研究对象，为攻克难题，采用了创新性的“主排孔 + 防片帮孔 + 箕斗辅助孔”全深冻结技术方案。通过数值模拟的分析手段，并紧密结合现场实际施工实践，对冻结帷幕展开深入分析。实践结果证明，该技术方案成效显著，不但能有效隔绝地下水的渗透，还能大幅增强井壁结构的稳定性，进而为井筒的高效掘砌施工创造了良好条件，为煤矿安全生产提供保障。

Abstract: The construction of skip loading chambers in the main shafts of coal mines poses significant safety risks. This paper investigates the main shaft project of Yingjun No. 1 Coal Mine, adopting a novel “main row of holes, anti-chip gang holes, skip auxiliary holes” full-depth freezing technology programme to address these challenges. Through the utilisation of numerical simulation and in close conjunction with on-site construction practices, a comprehensive analysis of the freezing curtain was conducted. The findings of this study demonstrate the efficacy of this technical solution in not only effectively isolating the infiltration of groundwater but also significantly enhancing the stability of the shaft wall structure. Consequently, this enhances the conditions for efficient shaft excavation and provides a safety guarantee for coal mine production.