平巷掘进，由水平至土汤以下的巷道、隧道及平碉的井巷掘进。主要用于地下矿山、铁路、公路和水利程等的平巷据进上程。
实践证明，悬拱法是不稳定岩层中平巷掘进的有效施工方法。
The practices showed that the suspension arch method of drifting is an effective way of drifting in unstable strata.
本文用可靠性理论，定量分析了平巷掘进装岩输机械系统的可靠性。
The paper according the theory of reliability, quantified analysis reliability of rock-loading transport mechanical system of gallery driving.
实践表明，采用单螺旋掏槽方式提高了平巷掘进爆破效率，取得了良好的经济效益。
The construction practice indicated that the blasting efficiency in drift was improved and good economic benefits were obtained by the adoption of single helix cutting mode.
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