太峪隧道斜井交叉口挤压变形段涌水处理技术

Waterburst Treatment On an Extrusion Segment of Inclined Intersection in Taiyu Tunnel

隧道涌水是隧道施工中常见的不良地质现象,尤其在隧道内临空面比较大的异形断面处出现大量涌水,将对隧道施工带来非常大的困难和险情。针对这一问题,根据太峪隧道变形裂缝实际情况,分析其原因并提出斜井交叉口地段的初期支护变形处理技术及施工注意事项,大大提高了施工安全性。同时,还对其它工程同类地质灾害处理具有一定的借鉴意义。

Waterburst in tunnel is a common adverse geological phenomenon, especially a lot of waterburst emerging on special sections with large free surface will bring great difficulties and dangers for construction. Based on the actual deformation ofcracks in Taiyu Tunnel, this paper analyses the reason of this problem, and introduces the early supporting deformation treat- ment on extrusion segments of inclined intersection as well as construction precautions,which can greatly improve the construetion safety. Moreover,this paper provides certain reference for similar geological disaster treatments.