基于隧道铣挖施工适应性的围岩质量分级方法

doi:10.13722/j.cnki.jrme.2019.0040

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摘要围岩质量分级是悬臂式掘进机隧道铣挖施工方法适应性评价的重要依据。为了建立相应围岩质量分级方法，首先基于瞬时掘进速率(ICR)可综合体现工程地质条件和机械设备因素对隧道铣挖施工影响的特点，提出以铣挖瞬时掘进速率为依据的隧道围岩质量分级标准；然后，在探讨围岩质量分级影响因素和评价指标的基础上，考虑影响因素的模糊性和层次性特点，建立铣挖施工隧道围岩质量分级的三级模糊综合评价模型，并提出诸如连续型和离散型评价指标隶属度及其权重向量等模型参数确定方法；同时，为减小隶属度和权重确定的主观性，提出确保隶属度和权重确定的客观性与合理性的相应策略；最后，通过工程实例计算，并与实测结果进行比较分析，表明本文模型与方法的合理性与可行性。

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	曹文贵1
	李树林1
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关键词 ：隧道工程, 铣挖施工方法, 围岩质量分级, 瞬时掘进速率, 三级模糊综合评价

Abstract：The classification result of surrounding rock quality is important to select the road-header as the tunnel excavation method or not，so the classification method should be proposed. Firstly，a classification standard of surrounding rock quality was presented based on the instantaneous cutting rate(ICR)，which can comprehensively reflect the influence of engineering geological condition and mechanical equipment factors on tunnel milling excavation. Secondly，the influence of the affecting factors and the evaluation indexes，their fuzzy and hierarchical characteristics on the classification result of surrounding rock quality was discussed. Then，a three-stage fuzzy synthetic judgment model of classify surrounding rock quality for tunnel excavation with road-header was suggested，and a method for determining the membership degrees and weight vectors of continuous and discrete evaluation indices was proposed. A corresponding strategy was also proposed to reduce the subjectivity of determining the membership degrees and weight vectors. Finally，the proposed method was applied to three different practical projects，and comparison between the calculation and measured results shows that the proposed method is feasible and reasonable.

Key words： tunnelling engineering tunnel milling excavation method surrounding rock mass classification instantaneous cutting rate three-stage fuzzy synthetic judgment

引用本文:

曹文贵1，李树林1，2，张永杰3. 基于隧道铣挖施工适应性的围岩质量分级方法[J]. 岩石力学与工程学报, 2019, 38(8): 1513-1522.
CAO Wengui1，LI Shulin1，2，ZHANG Yongjie3. A classification method of surrounding rock mass quality based on tunnel milling excavation construction adaptability. , 2019, 38(8): 1513-1522.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2019.0040 或 http://www.rockmech.org/CN/Y2019/V38/I8/1513

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