鹧鸪山高地应力软岩隧道大变形预测与施工技术研究

摘要

鹧鸪山隧道所穿岩层主要为千枚岩、板岩及变质砂岩,为高地应力软岩隧道.采用现场判断和工程类比对该隧道大变形进行预测,对存在的初级和中级隧道大变形采取相应施工技术措施,并对隧道大变形的预测和处治进行效果检验.%Zhegushan tunnel is a high ground stresses and soft rock tunnel.The rock stratum of the Zhegushan tunnel crossing is mainly phyllite,slate and metamorphic sandstone.The methods of field estimation and similar engineering analogy are used to predict the large deformation of the tunnel.It was evaluated as a tinnel with high ground stresses and soft rock.Corresponding construction technology measures are taken to deal with the existing primary and secondary tunnel large deformation.The effect on the large deformation prediction and construction technology measures is tested.