双连拱隧道施工技术和监控量测措施

On Construction Technology & Monitoring Measurement Method to Double-arch Tunnel

介绍长深公路承德到承唐界TJ12段安子岭一号隧道工程。该隧道为双洞连拱式单洞3车道高速公路隧道。施工中打破常规,勇于创新,在保证安全、质量的前提下,为加快施工进度,遵循了"管超前、严注浆、短进尺、强支护、早封闭、勤量测"的总体原则。从开挖及运输、支护、防排水处理、衬砌等方面,突破了施工网络图中的瓶颈制约,并加强监控量测,为国家节约了投资。通过严格按照施工要点对工程质量实行预控和过程控制,已完工的各分项工程合格率达100%。

Anziling No.1 Tunnel Project of Changshen Highway(Section TJ12,from Chengde to Chengtangjie) is introduced in this paper.It is a double-hole and arch expressway tunnel with three lanes in single hole.Under the premise of guaranteeing safety and quality,it breaks the normal procedure and makes innovations to speed up the construction process,and it obeys the general principle,advanced grout pipe,strict grouting process,minimum excavation,strong supporting,early closure and diligent measurement,during the whole construction period.It breaks through the bottlenecks of construction network graph from several aspects such as excavation & transportation,supporting,water repelling & drainage and tunnel lining,etc.,and moreover,monitoring measurement is strengthened to save cost for the country.Different sub-divisional work completed can arrive at 100% qualification rate through pre-controlling and process controlling on engineering quality based on construction key points strictly.