摘要
为了准确评价隧洞围岩的稳定性,降低开挖过程中的风险;选取岩石单轴饱和抗压强度、岩体完整性系数、地下水条件、结构面状态作为围岩评价指标,建立了基于熵权法、层次分析法的组合权重计算方法,并采用灰关联度分析法构建了隧道围岩质量的评价模型;以云南西山营隧道为例运用该模型,采用改进BQ法进行验证,对比发现:灰色关联分析模型与改进BQ法的评价结果具有高度的一致性;该评价模型可行性和可靠性较强,可为围岩质量评价提供一定参考。
In order to accurately evaluate the stability of tunnel surrounding rock,and reduce the risk in the process of excavation,this paper selects the uniaxial saturated compressive strength of rock,the integrity coefficient of rock mass,the groundwater condition and the state of structure plane as the evaluation indexes of surrounding rock,establishes the combined weight calculation method based on entropy weight method and analytic hierarchy process,constructs the evaluation model for tunnel surrounding rock quality by the grey relational analysis,and verifies the model by the improved BQ method,taking Xishanying tunnel in Yunnan Province as an example.The comparison shows that the evaluation results of grey relational analysis model is highly consistent with that of the improved BQ method.The evaluation model is highly feasible and reliable,which can provide reference for the quality evaluation of surrounding rock.
作者
蒋鹏飞
杜发兴
王雪蓉
周锦涛
JIANG Pengfei;DU Faxing;WANG Xuerong;ZHOU Jingtao(College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China;Three Gorges Navigation Authority,Yichang 443002,China)
出处
《人民珠江》
2021年第6期112-116,共5页
Pearl River
关键词
熵权法
层次分析法
灰色关联度
围岩分级
entropy weight method
analytic hierarchy process(AHP)
grey relational analysis
classification of surrounding rock
