摘要
岩溶地质条件对公路隧道建设影响较大。隧道在建设过程中围岩分级除考虑常用指标外,还须考虑岩溶影响因素指标。以广西岩溶区实际工程为背景,提出了考虑多因素的岩溶状态指标分析方法,建立以岩石坚硬程度、岩体完整程度、地下水状态、结构面产状和岩溶状态5个指标的围岩分级模型。根据Mat Lab和C++的软件平台设计,植入分级指标参数归一化算法,结合广西瑶寨等3个隧道工程,建立了神经网络专家知识库。最后对专家系统软件进行工程应用,软件判别与实际勘察判别一致性达到80.89%,工程应用效果良好。
As highway tunnel construction is greatly affected by karst geological condition,karst indexes should be considered in addition to conventional indicators in surrounding rock classification. In this research,a model of surrounding rock classification was set up,in which rock hardness,rock mass integrity,groundwater status,structural plane occurrence and karst status are included. The expert system based on three tunnel projects in Guangxi Province for surrounding rock classification was designed by embedding normalization algorithm for the indexes using Mat Lab and C + +. The expert system software was applied to engineering and the consistence between software results and actual survey reached 80. 89%.
引文
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