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在水电工程中,河谷两遍的工程边坡具有尺度大、高而陡的特点。同时这些边坡服务年限长,稳定性要求高。对于耦合考虑施工进度和工程安全的动态分析还较少涉及。由于地质参数、边坡结构和开挖支护的实时变化,对边坡工程安全的实时评价已成为制约水利水电工程建设安全的关键技术问题。考虑边坡施工过程中开挖进度的调整、新地质信息的揭露、支护方案的修改及计算参数的修正等信息实时变化的客观实际,重点针对目前较少涉及的施工期高边坡工程安全的实时分析和控制问题,提出了基于数值模拟技术的边坡实时安全仿真方法;基于数据库技术和ABAQUS二次开发技术实现施工进度信息、地质信息及支护信息到数值计算模型的动态映射,开发了边坡安全实时分析系统,最终实现了与施工进程相适应的边坡安全状态实时仿真分析和预测。
In hydropower projects, the engineering slope of the valley two times has the characteristics of large scale, high and steepness. At the same time, these slopes have long service life and high stability requirements. There is less involvement in the dynamic analysis of coupling considering the progress of construction and the safety of the project. Due to the real-time changes of geological parameters, slope structure and excavation and support, the real-time evaluation of slope engineering safety has become a key technical problem restricting the construction safety of water conservancy and hydropower projects. Considering the real-time changes of information such as the adjustment of excavation progress, the revelation of new geologic information, the modification of support scheme and the correction of calculation parameters during the construction of slope, the paper focuses on the safety of high slope at present, which is rarely involved in construction Real-time analysis and control of the slope, a real-time slope safety simulation method based on numerical simulation technology is proposed. Based on the database technology and the secondary development technology of ABAQUS, the dynamic mapping and development of the construction schedule information, geological information and support information to the numerical calculation model Real-time analysis system for slope safety realizes the real-time simulation analysis and prediction of slope safety status in line with the construction progress.