大型地下洞室群动态安全信息模型研究

Study on establishment of dynamic safety information model of large underground cavern group

针对地下洞室群围岩稳定性的动态反馈和控制,引入四维模型建立地下洞室群动态安全信息模型,以"前期反演反馈分析结果检验—即时参数动态反演分析—下期开挖洞室围岩力学行为预测"为循环流程,把工程信息、地质信息、安全监测信息、数值仿真信息等耦合到地下洞室稳定性的动态反馈和控制研究中。耦合可视化技术、检测分析理论、参数反演理论、数值仿真技术及计算机技术,同时利用C#.NET编程技术来模拟动态施工过程,建立三维可视化综合集成工程模型与施工过程中动态信息的有效映射关系,实现地下洞室群施工环境下安全状态的快速、准确、实时的反映,从而对施工期设计优化提供参考。

Aiming at the dynamic feedback and control of the surrounding rock stability for underground cavern group,a 4-D model is introduced herein to establish the dynamic safety information model of large underground cavern group,and then the project information,geological information,safety monitoring information,numerical simulation information,etc. are coupled into the study of the dynamic feedback and control of the surrounding rock stability for underground cavern by taking＂verification of the result from the prophase inverse and feedback analysis—dynamic inverse analysis of instant parameters—prediction of the dynamic behavior of the cavern surrounding rock during the next phase of excavation＂as the cyclic process. The effective mapping relationship between the 3-D visualization synthesized engineering model and the dynamic information during construction is established through coupling visualization technique,detection analysis theory,parametric inversion theory,numerical simulation technique and computer technique as well as simulating the dynamic construction process with the programming technique of C#. NET at the same time,so as to realize the rapid,accurate and real-time reflection of the status of the safety of underground cavern group under the construction environment,and thus provides a reference for the design optimization during construction.