普通法凿井井颈段施工技术应用
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崔喜旺(1973—),男,正高级工程师,从事金属矿山采矿及矿山建设工程方面的研究。

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TD262.1+1

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Application of construction techniques for borehole neck section by conventional holes drilling methods
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    摘要:

    井颈段作为竖井与地表工业场地的衔接关键,通常穿越第四系覆盖层、风化带与浅部基岩,地质条件多变、水文环境复杂,且多与地表水连通,渗水、涌水问题突出。施工技术的合理选择直接决定工程安全、工期与成本控制目标实现。本文围绕普通法凿井井颈段两类典型地质场景,即基岩段与第四系段,系统梳理主流施工工艺,并结合思山岭、多宝山、程潮、泥河等矿山工程实例,对比分析各类技术的适用条件、工艺原理与工程特性。分析结果表明:基岩井颈段可优先采用斜坡道法、临时井架法或临时提升过渡法;第四系井颈段以治水与固土(沙)为核心,应按土层性质选用放坡开挖、钢板桩支护、桩基加固、地层冻结及吊模逆作等工艺。本文成果可为同类竖井井颈段设计与施工提供技术参考。

    Abstract:

    The borehole neck section serves as a critical link between the underground shaft and the surface industrial area. It typically passes through the quaternary cover layer, weathering zones, and shallow bedrock. The geological conditions are variable, the hydrological environment is complex, and it is often connected to surface water. Issues such as seepage and water inflowing are particularly prominent. The appropriate selection of construction techniques directly determines the achievement of safety goals, project completion time, and cost control objectives. This paper focuses on such two typical geological scenarios related to the borehole neck section in common holesdrilling as the bedrock section and the Quaternary layer section. It systematically reviews the prevailing construction techniques. By analyzing real-world mining projects such as Sishanling, Duobao Mountain, Chengchao, and Nihe; this paper compares the applicable conditions, technical principles, and engineering characteristics of various technologies. The analysis results show that, for the borehole neck section of the bedrock, the slope approach method, temporary derrick method, or temporary hoisting transition method can be used preferentially. For the borehole neck section of the Quaternary strata, water control and soil stabilization (sand) are essential. Appropriate techniques such as slope excavation, steel sheet pile support, pile foundation reinforcement, ground freezing, and inverted construction using suspended formwork should be selected based on the properties of the soil layers. The results can serve as a technical reference for the design and construction of similar shaft borehole neck sections.

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崔喜旺,焦 东,赵纯林.普通法凿井井颈段施工技术应用[J].工程建设,2026,58(9):20-25

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  • 在线发布日期: 2026-09-19
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