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针对隧道埋深浅,总施作长度短特点,采用一次性施作大管棚与改良袖阀管复合加固技术,较好地解决了传统的隧道超前支护容易漏水坍孔的问题,确保了隧道安全开洞掘进,具有重要的现实意义和推广价值。
Aiming at the shallow depth of the tunnel and the short total length of the tunnel, a one-time application of the large pipe shed and the improved sleeve valve pipe composite reinforcement technology solves the problem of the traditional tunnel leaning support easily leaking collapse hole and ensures the tunnel Safe hole driving, has important practical significance and promotion value.