铁道科学与工程学报2016，Vol.13Issue(12)：2455-2462,8.
细砂卵砾石互层隧道支护体系与围岩变形现场测试
The filed-testing on surrounding rock deformation and supporting syste m in inter-bedded strata sand-gravel tunnel
摘要
Abstract
In order to avoid the occurrence of accident such as collapse,sand flow,roof caving ,this paper presents a study of the GangTuo tunnel in the 317 national highway.Field experiments analysis and field meas-urement are presented in this paper to investigate the suitability of pre-reinforcement,the variation laws of sur-face subsidence ,tunnel deformations and the final displacement distribution of deep surrounding rock,axis forces of anchors,contact pressures between surrounding rock and primary support,and the internal forces in arch frames.The results show that for the inter-bedded strata sand-gravel tunnel ,the small ductules grouting is difficult,the pre-grouted pipe shed could induce large deformation and the sand flow will take place in the pipe shed clearance.The sand flow and the large deformation can be controlled effectively by means of the pipe shed with rotary horizontal jet grouting pile.关键词
隧道工程/细砂卵砾石互层/支护体系/围岩变形/现场测试Key words
tunnel engineering/inter-bedded strata sand-gravel/supporting system/surrounding rock deforma-tion/field measurement分类
建筑与水利引用本文复制引用
严健,何川,晏启祥,蔚艳庆,严昆鹏..细砂卵砾石互层隧道支护体系与围岩变形现场测试[J].铁道科学与工程学报,2016,13(12):2455-2462,8.基金项目
国家自然科学基金资助项目（U1134208，U1361210，51378434）；国家科技支撑计划项目（2013BAB10B04）；西南交通大学峨眉校区基金资助项目 （）
