摘要
天山新二号双线铁路隧道施工中,由于地质情况不明发生了断层破碎带坍方。根据坍体形态,对空腔地段采用明洞通过,对堆碴地段采用固结注浆大管棚支护、侧壁导洞法开挖,顺利地通过了坍体。文章对管棚结构承受的荷载及受力进行了探讨和检算,对明洞结构的护拱及缓冲层进行了设计计算论证。
During construction collapse occurred in the fault fracture zone owing to the unexpected geological condition. A section of unburied tunnel was adopted to pass through the collapse cavity. Excavation through the collapsed The The tion debris was carried out by using side headings with the debris grouted and long pipe roofing support adopted. pipe -roofing structure was studied and with the stresses checked by considering the load of heaped debris. protective arch of the unburied tunnel and its over - lying cushion layer were studied and checked by computaas well.
出处
《现代隧道技术》
EI
北大核心
2007年第5期36-41,共6页
Modern Tunnelling Technology
关键词
隧道坍方
空腔处理
明洞防护
管棚支护
设计计算
Tunnel collapse
Cavity treatment
Unburied tunnel
Pipe -roofing support
Design and computation
