铁道标准设计2017，Vol.61Issue(5)：126-129,134,5.DOI:10.13238/j.issn.1004-2954.2017.05.027
丰沙铁路8号隧道内落石分析及处理措施
Rock-fall Analysis and Treatment Measures for No.8 Tunnel on Fengtai to Shacheng Railway
摘要
Abstract
The railway of Fengtai to Shacheng No.8 Tunnel was constructed in an early time and some sections of it are without lining.Due to the lone time weathering, vibration and underground fissure water erosion, surrounding rock-fall is encountered in those sections, which imposes threat to the traffic.After a detailed geological survey and the analyses of the causes of surrounding rock-fall, the thickness of rock loose zone is determined via geological radar non-destructive detection and theoretical analysis.Based on the actual operation, tunnel clearance, construction condition and other factors, TECCO flexibility protect system and grouting are employed to treat the unlined sections together with anchor bolts of long and short, and the stability of surrounding rock is analyzed with the finite element calculation.All these reinforcing measures are proved successful in preventing rock-fall and reinforcing unlined tunnel.关键词
铁路隧道/围岩脱落/松动圈/加固措施Key words
Railway tunnel/Falling-off of surrounding rock/Broken rock zone/Reinforcing measures分类
交通工程引用本文复制引用
赵继华..丰沙铁路8号隧道内落石分析及处理措施[J].铁道标准设计,2017,61(5):126-129,134,5.
