兴旺峁隧道快速掘进施工技术探讨

Discussion on Rapid Construction Technology of Xingwangmao Tunnel

结合太原—中卫新建铁路兴旺峁隧道不良的地质状况和恶劣的气候环境,介绍在湿陷性黄土、泥质粉砂岩、砂泥岩互层、节理层理发育、地下水位高及拱部存在大范围不规则砂层透镜体等复杂地质条件下,隧道的快速掘进施工技术,包括钻孔爆破、开挖运输、施工防排水及隧道通风等,可为类似条件的工程提供参考。

Taking the construction of Xingwangmao tunnel on Taiyuan-Zhongwei railway in poor geology and bitter climate as an example,the authors present the rapid construction technologies for tunnels in such complicated geological conditions as collapsed loess,argillaceous siltstone,sandstone and mudstone,alternative strata and ground with developed joints and stratifications,high water levels and large scale of irregular sand lens at the arch position,which include drilling and blasting technology,excavation and transportation technology,waterproofing and drainage technology during construction and tunnel ventilation technology.This paper can provide reference for similar projects in the future.