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小洞径隧洞一般为穿过山体、江河的区间隧道,用途多为供水、输电、交通等。在隧洞的施工过程当中,隧洞距离的长短、外部环境的制约均对这种小洞径隧洞的通风排烟提出了相当严格的技术标准要求。通风排烟的施工技术是否科学高效,施工方案的制定是否合理,不仅关系着小洞径隧洞工程的工期进展,更重要的是关系到施工人员的安全,以及工程所在区域的生态和谐。针对小洞径隧洞工程的施工特点,选取合适的通风排烟方式,根据理论数据的试验与施工条件,设计出施工方案,保证通风排烟效果。
Small tunnels are generally tunnels that pass through mountains and rivers and are mostly used for water supply, transmission, and transportation. During the construction of the tunnel, the length of the tunnel and the restriction of the external environment all put forward quite strict technical standards for the ventilation and smoke exhaust of the tunnel with small diameter. Whether the ventilation and smoke exhaust construction technology is scientific and efficient and whether the construction plan is reasonable is not only related to the progress of the tunnel project, but more importantly relates to the safety of construction personnel and the ecological harmony in the area where the project is located. Aiming at the construction characteristics of small tunnel project, the suitable ventilation and smoke extraction methods are selected. According to the experimental and construction conditions of theoretical data, the construction scheme is designed to ensure the ventilation and smoke exhaust effect.