基于现场实时监测技术的数值仿真优化分析及其应用研究

Numerical Artificial Optimization Analysis Based on In-situ Real Time Monitoring Technique and Its Application

对大型隧洞群的动态施工优化是保证工程经济、安全、顺利进行施工的关键。针对紫坪铺工程 4条引水发电隧洞复杂多变的地质条件 ,采用新奥法隧洞信息化施工中倡导的实时动态监测技术 ,跟踪现场施工进行了典型断面的系统观测 ,在此基础上进行了围岩宏观力学参数的反分析研究。基于跟踪施工的现场实时观测和反演分析结果 ,对引水发电洞群进行了精细化数值仿真分析 ,研究了不同施工方案和支护参数对岩体变形、破坏特性的影响 。

Dynamic construction Optimization of a group of large tunnels is crucial to ensure project to be carried out economically , safely and successfully . Due to complex and varied geological conditions for 4 headrace tunnels at Zipingpu Project , real time monitoring technique was used during informatization construction according to new Austrian tunneling method , system observation for typical sections was conducted by following in situ construction , based on which inverse analysis for rock mechanics parameters was conducted .According to in situ construction real time observation and inverse analysis results , refinement numerical artificial analysis on a group of headrace tunnels was conducted and influence of different construction schemes and support parameters on rock mass deformation and failure behavior were researched to provide quantized data and technical aid for project construction decisions.