Application of Sleeve Valve Pipe Grouting Technology in Unbalanced Pressure Tunnels
王超 WANG Chao
（南京城市建设管理集团有限公司，南京 210000）
（Nanjing Urban Construction Management Group Co.，Ltd.，Nanjing 210000，China）
摘要：孟北路隧道穿越碎石土层、中风化泥晶灰岩、中风化泥砾屑灰岩，隧道埋深较浅，地下水补给丰富，隧道周围岩体富含裂隙水，隧道出口偏压，采用回填碎石土及袖阀管注浆，消除偏压影响，成功解决暗挖过程中浅埋偏压隧道容易坍塌的问题。目的是为类似工程施工提供经验借鉴。
Abstract: The tunnel of Mengbei Road passes through the gravel soil layer, the weathered argillite limestone, the weathered mud gravel limestone. The tunnel is buried shallowly. The groundwater recharge is abundant. The rock mass around the tunnel is rich in fracture water.The tunnel exit is biased. The backfill gravel soil and sleeve valve pipe grouting are used to eliminate the influence of bias, and the problem of easy collapse of the shallow buried bias tunnel in the process of dark excavation is successfully solved. The purpose is to provide experience for the construction of similar projects.
关键词：隧道；城市主干路；偏压；碎石土回填；袖阀管注浆
Key words: tunnels；urban trunk roads；bias pressure；gravel soil backfilling；sleeve valve pipe grouting
中图分类号：U45 文献标识码：A 文章编号：1006-4311（2024）30-065-03 doi:10.3969/j.issn.1006-4311.2024.30.019
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