论文部分内容阅读
针对目前隧洞围岩力学参数估算方法缺少横向对比的缺憾,本文推荐采用力学参数综合估算方法对待评区围岩进行参数估算。首先对目前常用的行业规范法、拟合公式法、经验准则法等力学参数估算法进行了详细归纳、汇总,并指出各自在应用中需注意的问题、确定方法等,藉此,以某水利水电隧洞0+105 m~0+132 m段为研究对象,基于现场围岩结构特征素描结果进行围岩质量评价,进而实现应用行业规范法、拟合公式法、经验准则法对待评围岩力学参数的估算,并应用横向关联对照分析方法推荐了力学参数的取值结果。经与原位测试与室内试验结果推荐值对比发现,本文采用的力学参数综合估算方法结果与其取值大小、范围均较吻合,验证了该方法的合理性。对于隧洞围岩力学参数的快速、准确估算具有一定借鉴意义。
In view of the lack of lateral contrast in the current tunnel surrounding rock mechanical parameters estimation method, this paper recommends the comprehensive estimation method of mechanical parameters to evaluate the surrounding rock parameters. First of all, the commonly used methods such as industry standard method, fitting formula method and experience criterion method are summarized and summarized in detail, and the problems that need to be noticed in the application and the methods of determination are pointed out. In this way, The 0 ~ 105m ~ 0 + 132m section of hydropower tunnel is taken as the research object, and the surrounding rock quality is evaluated based on the result of structure characterization of the surrounding rock mass, and then the industrial standard method, the fitting formula method and the empirical criteria method are applied to evaluate the surrounding rock mass mechanics Parameters of the estimation, and the application of horizontal correlation analysis method recommended mechanical parameters of the value of the results. Comparing with the recommended values of in-situ test and indoor test results, it is found that the results of the comprehensive estimation of mechanical parameters adopted in this paper are in good agreement with the value and range of the test results, which proves the rationality of the method. It is of certain reference significance for the fast and accurate estimation of mechanical parameters of surrounding rock in tunnels.