Research and Application of Large Span Construction Technology in Auxiliary Shaft Changing Chamber
韩建东 HAN Jian-dong；李宁 LI Ning；尹建东 YIN Jian-dong
（枣庄矿业（集团）济宁七五煤业有限公司，枣庄 277600）
（Zaozhuang Mining（Group）Jining 75 Coal Industry Co.，Ltd.，Zaozhuang 277600，China）
摘要：大跨度硐室施工中，提升挖掘效率与确保围岩稳固性为主要技术难题。传统的浅孔爆破技术限制了施工效率。目前，深孔装药技术作为一种高效方法，在国内外的大跨度硐室施工中得到应用。实践显示，该技术同样适用于地质条件复杂的矿山。相较于浅孔爆破，深孔装药法能显著提升劳动生产率（增幅达 4~9 倍），并降低破岩成本（降幅达 66%~80%），从而缩短工期。本文结合施工实例详细分析了副井换装硐室大跨度施工技术。
Abstract: In the construction of large-span tunnels, improving excavation efficiency and ensuring the stability of surrounding rock are the main technical difficulties. The traditional shallow hole blasting technology limits construction efficiency. At present, deep hole charging technology, as an efficient method, has been applied in large-span tunnel construction both domestically and internationally. Practice has shown that this technology is also suitable for mines with complex geological conditions. Compared to shallow hole blasting, deep hole charging method can significantly improve labor productivity (an increase of 4~9 times) and reduce rock breaking costs (a decrease of 66%~80%), thereby shortening the construction period. This article provides a detailed analysis of the large-span construction technology for the replacement of auxiliary shaft chambers through construction examples.
关键词：硐室；大跨度；装药爆破；生产率
Key words: chamber；large-span；explosive charges；productivity
中图分类号：TD264 文献标识码：A 文章编号：1006-4311（2024）29-062-03 doi:10.3969/j.issn.1006-4311.2024.29.019
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