摘要
在工程地应力测试和试验洞变形监测结果综合分析的基础上,建立地质概化模型,试验洞施工开挖模型、地应力场分布模型。在此基础上,采用正交设计方法和神经网络进行了岩体地应力场三维变形反演分析,获得了岩体地应力场沿深度的分布规律。比较监测与计算位移,两者在量值上相当,在变形趋势上也基本相同,而且实测与计算所得地应力值较吻合,表明所获得岩体地应力场是基本合理的。
According to the comprehensive analysis on the results of engineering ground stress measurement and test hole deformation monitoring, general geological model, test hole excavation model and ground stress field distribution model are established. Then a three-dimensional deformation inversion analysis is conducted by orthogonal design method and neural network to acquire the distribution rule of rock body ground stress field at various depths. The monitoring results and the calculating displacement are basically equivalent in values and generally identical in deformation tendency, and the measured ground stress and the calculating values generally tally with each other, which demonstrate the rock body ground stress field out of the inversion analysis is basically reasonable.
出处
《广西水利水电》
2004年第4期5-8,共4页
Guangxi Water Resources & Hydropower Engineering
关键词
BP神经网络
地应力场
模拟
正交设计
反演
BP neural network
ground stress field
simulation
orthogonal design
inversion
