According to existing excavation difficult,low construction efficiency,high labor intensity and other problems in large section chamber underground coal mine,put forward the ascending and descending the stairs construction scheme,and elaborated specific construction process and technical measures,proved though the practice,the construction technology achieved good economic benefits,had wide application prospect.%针对煤矿井下大断面硐室施工中存在掘进难度大、施工效率低、劳动强度大等问题，提出了上下台阶施工方案，并阐述了具体的施工流程及技术措施，经实践证明，该施工技术取得了良好的经济效益，应用前景广阔。
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