首页|物元可拓法在引水隧洞围岩稳定性评价中的应用

物元可拓法在引水隧洞围岩稳定性评价中的应用

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为预防和控制引水隧洞中围岩失稳事故的发生，将物元可拓法应用于围岩稳定性评价中。以滇中引水工程为背景，选取滇中引水工程某隧洞段，构建引水隧洞围岩稳定性评价指标体系，划分围岩等级，选用灰色关联分析法(Grey Relational Analysis，GRA)和因子分析法(Factor Analysis，FA)组合确定权重，基于物元可拓模型进行引水隧洞围岩稳定性评价，以期减少目前评价方法中一些不相容现象及其他问题所带来的影响，从而提升长距离特大输水工程围岩稳定性等级评价的精度。结果表明，GRA-FA-物元可拓模型围岩稳定性评价结果与实际等级基本相符，与逼近理想解排序法(Technique for Order Preference by Similarity to Ideal Solution，TOPSIS)相比，预测评价精度从62。5％提升到87。5％，准确性提升了约25百分点。因此，GRA-FA-物元可拓模型相较以往的评价模型可以更全面和客观地进行引水隧洞围岩稳定性评价，可为其他长距离特大引水工程施工风险评价提供理论支撑。
Application of matter element extension method in stability evaluation of surrounding rock of diversion tunnel
To prevent and control the occurrence of surrounding rock instability accidents in diversion tunnels,the matter-element extension method is applied to the evaluation of surrounding rock stability.Taking the Central Yunnan Water Diversion Project as the engineering background,a representative tunnel section in the Central Yunnan Water Diversion Project is selected for analysis to construct the stability assessment index system of the surrounding rock of the diversion tunnel.According to the assessment index system,the surrounding rock grade is divided.The Grey Relational Analysis(GRA)and Factor Analysis(FA)are used in the model selection to calculate the subjective and objective weights,respectively.The final weight is determined by the combination of the two methods.According to the calculated ultimate weight,the stability evaluation and analysis of the surrounding rock of the diversion tunnel is carried out based on the matter-element extension model.Through the application of the matter-element extension model,the influence of some incompatibility phenomena and other problems in the contemporary evaluation method on the evaluation accuracy is reduced to improve the accuracy of the stability grade evaluation of the surrounding rock of the long-distance large-scale water conveyance project.Through research,the final results show that the surrounding rock stability evaluation results are based on the matter-element extension model and the grey correlation analysis method.Furthermore,the factor analysis method is consistent with the surrounding rock stability grade in the construction of the Central Yunnan Water Diversion Project.Compared with the Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)model of the control group,the prediction and evaluation accuracy of the matter-element extension model is improved from 62.5％to 87.5％,and the evaluation accuracy of the surrounding rock stability is improved by about 25％.Therefore,the matter-element extension model based on the grey correlation and factor analysis method can evaluate and analyze the stability of surrounding rock in constructing a diversion tunnel more comprehensively and objectively than the previous evaluation model.The evaluation method can provide theoretical support for constructing risk evaluation of other long-distance and extra-large diversion projects.

safety engineeringCentral Yunnan Water Diversion Projectsurrounding rock stabilityGrey Relational Analysis(GRA)Factor Analysis(FA)matter element extension model

张书豪、艾亚鹏、陈健、靳春玲、姬照泰

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中铁开发投资集团有限公司,昆明 650200

中铁西南科学研究院有限公司,成都 611731

中铁八局集团昆明铁路建设有限公司,昆明 650299

兰州交通大学土木工程学院,兰州 730070

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安全工程 滇中引水工程 围岩稳定性 灰色关联分析法 因子分析法 物元可拓模型

国家自然科学基金项目国家自然科学基金项目甘肃省科技计划项目

519690117226102420JR10RA274

2024

10.13637/j.issn.1009-6094.2022.2246

安全与环境学报
北京理工大学 中国环境科学学会 中国职业安全健康协会

安全与环境学报

CSTPCD北大核心
影响因子：0.943
ISSN：1009-6094
年,卷(期)：2024.24(1)
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