Abstract：Research purposes:Large deformation of soft rock is the main engineering geological problem encountered in the construction of deep buried railway tunnels. Based on the construction data of Lanzhou-Chongqing railway, this paper analyzes the main influencing factors controlling the large deformation level of soft rock, determines its subjective and objective weight, establishes the prediction model of large deformation of soft rock and carries out calculation verification. Research conclusions:(1) Lithology, rock integrity, layer thickness, ground stress state, relationship between rock strata strike and tunnel, groundwater and rock strata dip angle are the main factors affecting large deformation of soft rock. (2) In the subjective and objective analysis methods of rough set and Analytic Hierarchy Process (AHP), the weights of rock integrity degree, layer thickness and ground stress state are significantly higher, while the other factors are relatively minor. (3) The calculation results show that the AHP structural model has a high matching degree in Hadapu tunnel of Lanzhou-Chongqing railway. (4) The research result can provide support for similar railway geological line selection, risk assessment and engineering design, and provide a new idea for classification and prediction of large deformation of tunnel surrounding rock.
马邦闯, 张志亮, 赵文, 王朋, 陈兴强, 罗锋. 基于粗糙集与AHP的深埋隧道软岩大变形研究[J]. 铁道工程学报, 2022, 39(10): 59-64.
MA Bangchuang, ZHANG Zhiliang, ZHAO Wen, WANG Peng, CHEN Xingqiang, LUO Feng. Research on the Large Deformation of Soft Rock in Deep Tunnel Based on Rough Set and AHP. Journal of Railway Engineering Society, 2022, 39(10): 59-64.
张祉道. 关于挤压性围岩隧道大变形的探讨和研究[J]. 现代隧道技术,2003(2):5-12.Zhang Zhidao. Discussion and Study on Large Deformation of Tunnel in Squeezing Ground [J]. Modern Tunnelling Technology, 2003(2):5-12.
[2]
Hoek E, Marinos P. Predicting Tunnel Squeezing Problems in Weak Heterogenous Rock Masses[J]. Tunnels and Tunnelling International, 2000(11):45-51.
[3]
刘志春,朱永全,李文江,等. 挤压性围岩隧道大变形机理及分级标准研究[J]. 岩土工程学报,2008(5):690-697.Liu Zhichun, Zhu Yongquan, Li Wenjiang, etc. Mechanism and Classification Criterion for Large Deformation of Squeezing Ground Tunnels[J]. Chinese Journal of Geotechnical Engineering, 2008(5):690-697.
[4]
李国良,刘志春,朱永全,等. 兰渝铁路高地应力软岩隧道挤压大变形规律及分级标准研究[J]. 现代隧道技术,2015(1):62-68.Li Guoliang, Liu Zhichun, Zhu Yongquan, etc.On the Large Squeezing Deformation Law and Classification Criteria for the Lanzhou-Chongqing Railway Tunnels in Soft and High Geostress Rocks[J]. Modern Tunnelling Technology, 2015(1):62-68.
[5]
刘炳飞. 基于神经网络算法的软弱围岩隧道变形预测研究[D]. 西安:长安大学,2020.Liu Bingfei. Research on the Prediction of Soft Surrounding Rock Tunnel Deformation Based on Neural Network Algorithm[D]. Xi’an:Chang’an University, 2020.
[6]
杨汝华. 公路隧道区域地应力分级及围岩变形预测研究[D].北京:中国地质大学,2020.Yang Ruhua. Classification of Research Area Stress and Surrounding Rock Deformation Prediction of Highway Tunnel[D]. Beijing:China University of Geosciences, 2020.
[7]
张志亮. 西宁至成都铁路特殊地质问题及选线研究[J]. 铁道工程学报,2019(12):11-16.Zhang Zhiliang. Research on the Special Geological Problems and Route Selection of the Xining-Chengdu Railway[J]. Journal of Railway Engineering Society, 2019(12):11-16.
[8]
马邦闯,谭飞,焦玉勇,等. 基于粗糙集与AHP的地下空间开发地质适宜性评价模型构建方法研究[J]. 安全与环境工程,2020(6):153-159.Ma Bangchuang, Tan Fei, Jiao Yuyong, etc. Construction Method of Geological Suitability Evaluation Model of Underground Space Development Based on Rough Set and AHP[J]. Safety and Environmental Engineering, 2020(6):153-159.
2022, Vol. 39 
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