工程岩体是一个高度复杂的灰色系统,按理论方法或实测途径均难以完全确定岩石的基本参数。地下工程快速反馈分析方法是工程现场完善设计、优化施工的可靠方法。通过深入分析施工期围岩参数正反演过程,发现影响反演效果的关键因素为输入数据的真实性,计算模型的适应性和计算结果的可靠性。结合工程地质和监控量测特征,提出了用正交试验设计优化反演方案设计的方法;采用区间分析和分层优化的思想建立了不确定性力学参数的区间反分析优化方法,并给出了目标函数和技术路线。研究地下工程施工过程中多点位移计的布置原则和监测数据变化规律,指出了快速反馈分析方法在大型地下洞室群施工参数反演实践中的特点。通过针对性的反演分析可得到最优围岩参数值,用以优化工程设计和施工。 Engineering rock mass is a highly complex gray system. It is difficult to completely determine the basic parameters of rock by both theoretical methods and measured methods. The rapid feedback analysis method of underground project is a reliable method to perfect design and optimize construction on the project site. Through in-depth analysis of the inversion process of surrounding rock parameters during construction, it is found that the key factors affecting the inversion effect are the authenticity of input data, the adaptability of calculation model and the reliability of calculation results. Combined with the characteristics of engineering geology and monitoring measurement, a method of orthogonal design was proposed to optimize the design of the inversion scheme. The method of interval back analysis was established based on the idea of ​​interval analysis and hierarchical optimization. The objective function and technical route. The principle of multi-point displacement meter layout and the change rule of monitoring data during the construction of underground engineering are studied. The characteristics of fast feedback analysis method in the inversion of construction parameters of large underground caverns are pointed out. The optimal surrounding rock parameters can be obtained through targeted inversion analysis to optimize the engineering design and construction.