Taking the large-section underground room support of a deep well as an example, the paper describes the tunnel section shape and specifications, support forms, and recycling sizes and so on, and puts forward corresponding construction methods. Practice proves that good support effect is achieved through applying rational support method.%以某深井大断面硐室支护为例，阐述了巷道断面形状及规格、支护形式、循环进尺方面的内容，并提出了相应的施工方法，实践证明，采用合理的支护方式，取得了良好的支护效果，可指导同类工程施工。
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