高速公路新奥法隧道围岩变形特性现场测试分析  

Field test analysis of deformation characteristics of surrounding rock of new austrian tunnel on expressway

作　　者：张勃蓬[1] ZHANG Bo-peng(Shanxi Transportation Research Institute,Tangyuan,Shanxi 030006,China)

机构地区：[1]山西省交通科学研究院,山西太原030006

出　　处：《黑龙江交通科技》2018年第9期157-158,共2页Communications Science and Technology Heilongjiang

摘　　要：基于此考虑,依托低山丘陵区某高速公路隧道工程为背景,结合现场测试坡面位移、隧道洞口围岩收敛、拱顶位移等测试数据,探索了低山丘陵区公路隧道围岩变形特性。同时,借助星野法与多项式法,对隧道围岩变形进行预测。研究结果表明:隧道上方坡面测点竖向位移及侧向变形相对较小,累积测试3个月小于10 mm,围岩收敛与拱顶位移控制在5 mm以内;结合实测数据预测5年内围岩收敛与拱顶位移控制在6 mm以内,建设期变形约占预测总变形83%以上。测试及预测分析表明围岩整体变形较小,满足长期安全运营需求。Period line maintenance management to provide objective problems. Based on this consideration,based on the engineering of a highway tunnel in the hilly region,this paper explores the deformation characteristics of the surrounding rock mass of highway tunnel in low hilly area with the test data of on-site testing of slope displacement,convergence of surrounding rock of tunnel entrance and displacement of dome. At the same time,with the help of Xingye method and polynomial method,the deformation of tunnel surrounding rock is predicted. The results show that the vertical displacement and the lateral deformation of the measuring points on the slope above the tunnel are relatively small,the cumulative test is less than 10 mm in 3 months,the surrounding rock convergence and the dome displacement are controlled within 5 mm. Based on the measured data,And dome displacement control within 6 mm,the construction period of about 83% of the total deformation forecast. Test and prediction analysis shows that the overall deformation of surrounding rock is small,which meets the needs of long-term safe operation.

关 键 词：低山丘陵 公路 隧道 围岩变形 测试 

分 类 号：U455[建筑科学—桥梁与隧道工程]