基于ANSYS软件地应力反演的数值实验技术

Numerical experimental technology for geo-stress inversion based on ANSYS software

利用物理实验手段进行地应力测量,只能获得某些井点的数据,而很难得出整个区块的应力场分布情况。利用ANSYS数值软件和多约束优化方法,通过目标区块边界荷载的反演,进行了应力场模拟。图示说明建立应力场地质模型、模型边界约束条件和目标井点地应力方向分布实验结果。在利用数值技术进行实验教学的过程中,学生的主观参与性大大增强,创新探索能力也得到了锻炼。

The geo-stress measurement by means of the physical experiment can only obtain data of some wells, but it is difficult to obtain the distribution of stress field in the whole area. By using the ANSYS numerical software and multi-constrained optimization method, the simulation of the stress field is carried out by the inversion of the boundary load of the target block. The graphical illustration shows the experimental results of establishing the geological model of stress field, boundary constraint conditions of model and geo-stress distribution at the target well point. In the process of using the numerical technology in experimental teaching, students’ subjective participation has been greatly enhanced, and their consciousness of innovation and exploration has also been trained.