建井安全监测中井下结构安全评估建模方法

Modeling Method of Underground Structure Safety Evaluation in Shaft Building Safety Monitoring

立井建设安全监测过程中,需要采用FLAC3D对立井建设中开挖的大硐室、硐室群等复杂结构进行安全性评估,但FLAC3D在模拟较复杂模型的情况下,建立三维网格模型的效率很低,建模时间长且难度大;基于软件内部单元节点生成规则,研究了2种软件内部单元节点编号顺序并进行了转换,最终导出了FLAC3D可以识别的文档并生成了实体单元和结构单元。结果表明:这种三维建模方法可行,使原有费时费力的建模变的简单快速,节约建模时间70%以上,对指导立井建设中的安全监测项目有较大的价值。

During the safety monitoring of mine construction,the FLAC^3D is used to evaluate complex structures like large chamber and chamber group excavated in the project. However,it is less effective,more difficult and time consuming to build the 3D Mesh Model in terms of the more complicated modeling imitated by FLAC^3D. Therefore,based on the generation laws of element node within the software,we study the number of element node in two softwares and change their sequence to find out the documents identified by FLC^3D and turn into solid element and structural element. The results show that this three- dimensional modeling is feasible and makes the original time and effort consuming modeling ways more simple and fast with 70% time saved,which is greatly conducive to the safety monitoring of mine construction.