摘要
依托施家山隧道,对隧道穿越顺层偏压段开挖施工进行分析。首先从变形原理上对具有结构面的围岩岩层的剪切破坏范围进行了分析;结合隧道实际偏压走向,从不同岩层倾角、不同层厚、不同层间粘聚力三方面出发,分析开挖后受力变形规律以及塑性区分布,对变形机理展开探究;最后针对本隧道实际施工,提出相应的变形控制措施,为相关工程建设提供借鉴。
Based on the Shijiashan tunnel,analyzes the excavation construction of the tunnel passing through the eccentric pressure section along the bed.Firstly,the shear failure range of surrounding rock layers with structural planes is analyzed from the perspective of deformation principle;combined with the actual bias trend of the tunnel,the analysis is carried out from three aspects:different rock layer dip angles,different layer thicknesses and different interlayer cohesion.After excavation,the law of force and deformation and the distribution of plastic zone are explored to explore the deformation mechanism.Finally,according to the actual construction of this tunnel,corresponding deformation control measures are proposed to provide reference for related engineering construction.
作者
阮小勇
张佳
Ruan Xiaoyong;Zhang Jia(Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611134,China)
出处
《科学技术创新》
2022年第31期158-161,共4页
Scientific and Technological Innovation
关键词
顺层偏压
变形原理
变形规律
控制措施
bedding strata
deformation principle
deformation law
control measures
