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介绍了压浆和超前管棚在不良地质隧道施工中的受力原理与应用。结合浙赣铁路茶垣、杨树湾隧道施工,介绍了破碎、松软围岩条件下大管棚的施工技术。实践证明,超前管棚支护结构具有足够的可靠性能,对于不良地质地下结构有较好的适用性。
The stress principle and application of grouting and advanced pipe shed construction in adverse geological tunnel construction are introduced. Combined with the construction of the Zhejiang-Jiangxi Railway Chayuan and Yangshuwan Tunnels, the construction techniques for the large pipe shed under broken and soft surrounding rock conditions are introduced. Practice has proved that advanced pipe shed support structure has sufficient reliability performance, for poor geological substructure has good applicability.