大型地下洞室群施工期结构安全与进度耦合实时仿真

大型地下洞室群施工安全与进度受突发不良地质状况影响较大,实时确定不良地质对施工结构安全与进度的综合影响具有重要工程意义.通过建立实际施工状态“集合”与3维全尺度数值模型模拟状态“集合”之间的实时动态映射关系,以数值模拟技术为主要手段,结合并行计算方法,实现对地下洞室群施工过程的结构安全与进度耦合实时仿真.将突发不良地质状况映射到数值模型上,根据实时仿真结果对不良地质段施工的结构安全性进行预测评估,对不满足安全要求的施工状态提出相应的处理措施,并对处理效果进行实时仿真预测,将确定的处理措施以施工参数的形式反馈给施工进度控制系统,实时评价处理措施对总体施工进度的影响.最后基于Python+VB.net混合编程技术开发了大型地下洞室群施工期结构安全与进度耦合实时仿真系统,该系统实现了地下工程安全施工与进度控制的现场办公一体化,为地下工程现场施工的安全与进度控制提供了技术支持.

Coupling Real-time Simulation of Structure Safety and Schedule of Large-scale Underground Cavern Group During the Construction Period

An abrupt bad geological condition has a big impact on large-scale underground cavern group of construction safety and schedule, so it is of great engineering significance determining the real-time influence on the construction safety and schedule caused by the bad geological conditions. By establishing the real-time dynamic mapping relationship between the set that the actual construction state and the set that the emulation mode of the three dimensional and full scale numerical model, with numerical simulation technology as the main means, and combining with parallel computing method, the function of coupling real-time simulation of structure safety and schedule during the full process of construction can be realized. The bad geological conditions will be mapped to the numerical model, then according to the real-time simulation results, the prediction and evaluation of the structure safety with bad geological conditions will be made, treatment measures will be put forward if the safety of construction state does not meet requirements, and the treatment effect will be predicted by real-time numerical simulation. The determined treatment measures will be converted to construction parameters to feedback to construction schedule control system, and the influence on the construction schedule caused by treatment measures will be evaluated simultaneously. Finally, based on a mixed programming technology with Python and vb.net, a large-scale underground cavern group construction structure safety and schedule coupling real-time simulation system are developed. The system can realize the field office integration of underground cavern group construction safety and schedule control, which provides great technical support to safety and schedule control of underground cavern group construction.