位移反分析的自适应神经模糊推理方法在湘西金矿的应用
Application of ANFIS-based approach for back analysis of displacements in Xiangxi gold mine
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摘要: 本文应用位移反分析的自适应神经模糊推理方法,对湘西金矿244采场围岩的力学参数进行了反演;并应用反演结果对该采场各矿房围岩的变形进行了模拟计算;与此同时,还对矿房围岩的变形进行了监测;最后将模拟计算结果与监测结果进行了比较,对矿房围岩的变形稳定性进行了分析。研究结果表明,模拟位移与监测位移吻合良好,且未超过允许变形值,这说明基于反演结果的数值计算模型对围岩变形具有良好的预测性能,进而说明,该反分析方法具有良好的工程适用性,可在工程实践中推广应用。Abstract: The ANFIS-based approach for back analysis of displacements was used to determine the mechanical parameters of the rock mass surrounding the stopes in block 244 in Xiangxi gold mine.The mechanical parameters were then used to compute,by numerical method,the displacements of the rock mass surrounding every stope in the block.Simultaneously,the displacements of the rock mass were monitored.Comparison was made between the simulated and monitored displacements and an analysis was also made on the stability of the rock mass surrounding stopes in the block.It was shown that the simulated displacements were in good agreement with those monitored displacements and both of them were smaller than the allowable displacement,that the numerical model based on the back-analyed results was capable of predicting the displacements of the surrounding rock mass and the ANFIS-based approach was applicable to rock engineering problems.