摘要
岩体质量分类Q系统是目前应用最广的岩体质量分类方法。针对西南某水电站引水隧洞TBM施工中的围岩质量分类问题,进行大量的现场调查、数据采集,发现TBM施工方法对结构面的节理组数,节理间距等揭露不充分,在Q系统基础上对该系统的参数进行调整建立JPQT系统,主要把RQD/Jn项替换成岩体完整性系数Kv来反映岩石的完整程度,经检验JPQT系统在TBM开挖的1#、3#引水隧洞适用性较好。本文对以后TBM施工条件下隧洞围岩分类研究提供了有价值的参考。
Rock mass quality classification Q-system is the most extensive application method for the rock mass quality classification.Poited to the rock mass quality classification problem of TBM construction tunnels of a hydropower power station in Southwest China,a great deal of field investigation and data collection work has been done and found that the TBM constructon couldn＇t fully show the number and the spacing of joints.The JPQT system was proposed by adjusting the parameters based on the Q-system,the RQD/Jn was mainly replaced by the coefficient of rock integrity Kv.The applicability of the JPQT system into the No.1 and No.3 diversion tunnels was more suitable.This article provided a valuable reference for the tunnel surrounding rock mass classification constructed by TBM.
出处
《水资源与水工程学报》
2011年第5期167-170,共4页
Journal of Water Resources and Water Engineering
关键词
岩体质量分类
Q系统
TBM施工
岩体完整性系数
rock mass quality classification
Q-system
TBM construction
coefficient of rock integrity
