暮底河水库输水隧洞围岩稳定性及对策

Surrounding Rock Stability of Reservoir and Countermeasures of Conveyance Tunnel of the Reservoir on Mudi River

从隧洞围岩的岩石强度、岩体完整程度、结构面状态、地下水状态、主要结构面产状等五个因素入手,研究围岩的稳定性,提出不同围岩类别的处理形式,特别是在灰岩地区隧洞中的Ⅱ、Ⅲ类围岩,采用喷混凝土处理,既节省工程投资,又加快了工程进度,对类似工程有借鉴作用。

Stability of tunnel surrounding rock is researched from five factors in this paper,such as rock strength,degree of rock integrity,the state of structural surfaces,the state of groundwater,occurrence of the main structural surfaces.And the handle mode on different classification surrounding rock is put forward,specifically,Ⅱ and Ⅲ level tunnel surrounding rock in limestone area is treated with shotcrete construction,not only the engineering investment is cut down,but also the project progress is speeded up.It＇s of reference for the similar projects.