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该文以节理岩体中水中隧洞为研究对象 ,考虑岩体结构面与洞室布置的组合 ,推导出超挖块体体积计算的一般公式。通过某水工隧洞的勘探平洞PD6的洞顶超挖块体的调查 ,评价了超挖块体体积及其分布 ,为该水平隧洞的开挖及其加固处理提供一定的依据
In this paper, the underwater tunnel in the jointed rock mass is taken as the research object. The combination of the rock mass structural plane and the cavern layout is deduced. Through the investigation of the top over-excavation block of the PD6 exploration flat hole in a hydraulic tunnel, the volume and its distribution of the over-excavation block were evaluated to provide a basis for the excavation and reinforcement of the horizontal tunnel