基于监测资料的反演岩体结构面参数方法研究

Research on Inversion Method for Structural Plane Parameters of Rock Mass Based on Monitoring Data

因岩体参数比较难以确定,其对数值计算的结果会造成很大的影响,而实验室内对岩体参数的测定均存在尺度效应问题,且考虑经济因素,现场取样不多,因而无法准确得到工程区的岩体参数.反演分析是研究由实测数据推断物理系统模型参数的理论和方法,广泛应用于岩土工程当中.利用训练好的连通率反演岩体参数,验证了在反演分析方法得到的参数下岩土体的稳定性.

The parameters of rock mass are difficult to be determined, which have great impact on the re- sults of numerical calculation. It is impossible to get accurate rock mass parametersin project areas, be- cause there is the problem of scale effect for parameters measurement in the laboratory and the inadequate on-spot sampling number for economic consideration. Inversion analysis is the theory and method for study- ing model parameters of physical system inferred from the measured data, which is widely applied in geotechnical engineering. This paper uses the trained eormecdvity rate to inverse rock mass parameters, and verifies the stability of the rock-soil mass with the parameters obtained by the inversion analysis method.