BACK ANALYSIS OF PERMEABILITY OF FRACTURED ROCK
BACK ANALYSIS OF PERMEABILITY OF FRACTURED ROCK
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发表时间：
2009
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通讯作者：
Chen Sheng-hong
中科院分区：
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作者：
Chen Sheng-hong
提出了岩体裂隙连通性比与连通性系数之间的近似关系。推导了单组裂隙岩体的等效渗透率张量。建立了单孔定向水压试验的有限元分析方法，并进行了一系列数值试验。数值试验结果作为BP神经网络的训练样本。将训练好的BP神经网络与单孔定向水压试验信息相结合，形成等效渗透率张量反分析方法。工程实例验证了该方法的可靠性。
The approximate relationship between connectivity ratio and connectivity coefficient of fractures in rock mass is proposed. The equivalent permeability tensor of rock mass,which has single set of fractures,is deduced. The finite element method to analyze single-hole directional water pressure test is established,and a series of numerical tests are carried out. The numerical test results are used as train samples for BP neural network. The trained BP neural network combined with the information of single-hole directional water pressure test forms the methodology for the back analysis of the equivalent permeability tensor. The reliability of the method is verified by engineering example.