基于模糊数学的TBM施工岩体质量分级研究

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Abstract According to tunnel boring machine(TBM) advance rate，surrounding rockmass is classified into 4 grades，i. e. good，comparatively good，comparatively bad and bad in working condition. Based on fuzzy mathematics method，two indices of uniaxial compressive strength UCS and rock mass integrity index KV are adopted；and their membership functions of the 4-grade classification of rock mass about TBM construction are established. Meanwhile，Sigmoid function is adopted to depict the weight of UCS and KV rather than a constant as QTBM and traditional fuzzy mathematics method. Based on the maximum membership degree criterion of fuzzy mathematics，the rockmass quality of TBM construction could be classified. Applications of three construction cases show that the prediction results coincide well with the TBM construction advance rate reality. The classification method is simple and feasible；and it can be put into practice.

Key words： tunnelling engineering tunnel boring machine(TBM) surrounding rockmass classification fuzzy mathematics method

Received: 15 February 2011

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I6/1225

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