基于收敛约束原理的复杂地质隧道监控量测综合分析
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摘要
隧道开挖工程中围岩与支护结构之间的"相互作用"和"动态作用"对隧道开挖施工的安全性和结构的稳定性具有关键作用。收敛约束原理是分析隧道围岩特征和支护结构特征的一种重要方式。文章通过理论分析、数值计算、现场监测综合分析方法,结合攀大高速宝鼎隧道,对复杂地质条件下大断面隧道的围岩支护稳定性进行分析。通过数值计算建立了围岩特征曲线,理论分析了复合结构支护特征方程,建立了复合支护结构并联模型;通过现场监控量测与理论分析相结合的方法综合分析隧道围岩支护结构的稳定性。结果显示现场实测与理论分析误差较小,对于采用现场监控量测指导支护施工具有理论指导意义,同时对于类似复杂地质条件下的大断面隧道支护提供借鉴和参考。
The interaction and dynamic action between the surrounding rock and the supporting structure plays a key role in the safety and stability of the tunnel excavation. The convergence constraint principle is an important way to analyze the characteristics of tunnel surrounding rock and the characteristics of support structure. Through theoretical analysis, numerical calculation and field monitoring integrated analysis method, combined with the Baoding Tunnel in Panzhihua-Dali Expressway,the stability of surrounding rock support for large cross section tunnel under complicated geological conditions was analyzed.Characteristic curve of surrounding rock was established by numerical calculation and theoretical analysis of the composite structure supporting characteristic equation, in addition, a parallel model of composite support structure was established.Moreover, the stability of tunnel surrounding rock supporting structure was analyzed comprehensively through the site monitoring measurement and theoretical analysis. The results show that the error between field measurement and theoretical analysis is small, which are of theoretical and instructive significance to guide support construction with on-site monitoring measurement. Simultaneously, it could provide a reference for the support of large cross section tunnels under similar complex geological conditions.
The interaction and dynamic action between the surrounding rock and the supporting structure plays a key role in the safety and stability of the tunnel excavation. The convergence constraint principle is an important way to analyze the characteristics of tunnel surrounding rock and the characteristics of support structure. Through theoretical analysis, numerical calculation and field monitoring integrated analysis method, combined with the Baoding Tunnel in Panzhihua-Dali Expressway,the stability of surrounding rock support for large cross section tunnel under complicated geological conditions was analyzed.Characteristic curve of surrounding rock was established by numerical calculation and theoretical analysis of the composite structure supporting characteristic equation, in addition, a parallel model of composite support structure was established.Moreover, the stability of tunnel surrounding rock supporting structure was analyzed comprehensively through the site monitoring measurement and theoretical analysis. The results show that the error between field measurement and theoretical analysis is small, which are of theoretical and instructive significance to guide support construction with on-site monitoring measurement. Simultaneously, it could provide a reference for the support of large cross section tunnels under similar complex geological conditions.
引文
[1]董新平.浅埋大跨度隧道施工中非均衡支护设计的影响分析[J].岩土工程学报,2012, 34(6):1148-1153.
[2]李寿福.黄河高阶地复杂地质条件大断面隧道施工监控量测与分析[J].铁道建筑技术,2013(8):96-101.
[3]傅新军,杨春.大断面隧道施工监控量测[J].铁道建筑技术,2007(S1):108-110.
[4] Zhao J, Liu L, Wang G,et al. Deformation Monitoring and Inversion Analysis of Surrounding Rock Mechanics Parameters for Metro Construction with Mining Method in Dalian[J]. Journal of Disaster Prevention&Mitigation Engineering, 2016.
[5] Lin C, Zhou L, Li S, et al. Tunnel Monitoring and Measurement Case Study in Qiyueshan Tunnel[C]//International Conference on Material, Mechanical and Manufacturing Engineering, 2015.
[6]陈峰宾,张顶立,扈世民,等.基于收敛约束原理的大断面黄土隧道围岩与初支稳定性分析[J].北京交通大学学报,2011, 35(4):28-32.
[7]唐雄俊.隧道收敛约束法的理论研究与应用[D].武汉:华中科技大学,2009.
[8]苏永华,刘少峰,王凯旋,等.基于收敛-约束原理的地下结构稳定性分析[J].岩土工程学报,2014, 36(11):2002-2009.
[9]陈建勋,楚锟,王天林.用收敛一约束法进行隧道初期支护设计[J].西安公路交通大学学报,2001,21(2):57-59.
[10]张素敏,朱永全,景诗庭.收敛约束原理在隧道位移稳定性判据中的应用[J].铁道标准设计,2004(8):38-40.
[11] Hoek E,Brown E T. Underground excavations in rock[M]. London:Institute of Miniy and Metallurgy, 1980.
[12] Hoek E,Marinos P. Predicting tunnel squeezing problems in weak heterogeneous rock masses[J]. Tunnels and tunnelling international, 2000, 32(11):45-51.
[13] Oreste P P. Analysis of structural interaction in tunnels using the covergence-confinement approach[J]. Tunnelling and Underground Space Technology, 2003, 18(4):347-363.
[14]孙钧.地下工程设计理论与实践[M].上海:上海科学技术出版社,1996.
[15]齐明山.大变形软岩流变性态及其在隧道工程结构中的应用研究[D].上海:同济大学,2006.
[2]李寿福.黄河高阶地复杂地质条件大断面隧道施工监控量测与分析[J].铁道建筑技术,2013(8):96-101.
[3]傅新军,杨春.大断面隧道施工监控量测[J].铁道建筑技术,2007(S1):108-110.
[4] Zhao J, Liu L, Wang G,et al. Deformation Monitoring and Inversion Analysis of Surrounding Rock Mechanics Parameters for Metro Construction with Mining Method in Dalian[J]. Journal of Disaster Prevention&Mitigation Engineering, 2016.
[5] Lin C, Zhou L, Li S, et al. Tunnel Monitoring and Measurement Case Study in Qiyueshan Tunnel[C]//International Conference on Material, Mechanical and Manufacturing Engineering, 2015.
[6]陈峰宾,张顶立,扈世民,等.基于收敛约束原理的大断面黄土隧道围岩与初支稳定性分析[J].北京交通大学学报,2011, 35(4):28-32.
[7]唐雄俊.隧道收敛约束法的理论研究与应用[D].武汉:华中科技大学,2009.
[8]苏永华,刘少峰,王凯旋,等.基于收敛-约束原理的地下结构稳定性分析[J].岩土工程学报,2014, 36(11):2002-2009.
[9]陈建勋,楚锟,王天林.用收敛一约束法进行隧道初期支护设计[J].西安公路交通大学学报,2001,21(2):57-59.
[10]张素敏,朱永全,景诗庭.收敛约束原理在隧道位移稳定性判据中的应用[J].铁道标准设计,2004(8):38-40.
[11] Hoek E,Brown E T. Underground excavations in rock[M]. London:Institute of Miniy and Metallurgy, 1980.
[12] Hoek E,Marinos P. Predicting tunnel squeezing problems in weak heterogeneous rock masses[J]. Tunnels and tunnelling international, 2000, 32(11):45-51.
[13] Oreste P P. Analysis of structural interaction in tunnels using the covergence-confinement approach[J]. Tunnelling and Underground Space Technology, 2003, 18(4):347-363.
[14]孙钧.地下工程设计理论与实践[M].上海:上海科学技术出版社,1996.
[15]齐明山.大变形软岩流变性态及其在隧道工程结构中的应用研究[D].上海:同济大学,2006.