五子山隧道仰拱开裂综合处治方案研究

Study on Comprehensive Treatment Scheme of Inverted Arch Cracking in Wuzi Mountain Tunnel

通过对甜永高速五子山隧道仰拱裂缝的调查和对裂缝产生的原因进行分析,综合考虑隧道的降水排水、地基加固、衬砌结构加强和路面加固四个方面,制定了仰拱裂缝整治方案,并在方案实施过程中对隧道洞内收敛和拱顶沉降变形进行了监测。结果表明,根据以上四个方面的因素制定的隧道仰拱裂缝整治方案是合理可行的。根据该方案对隧道进行整治后,有效抑制了隧道裂缝的发展,为隧道后期的安全运营提供了保障,也为类似工程整治方案的制定提供了有价值的参考资料。

Based on the investigation of the cracks in the inverted arch of Wuzi Mountain Tunnel of Tianyong Expressway, and analysis of the crack causes, this paper comprehensively considers four aspects of dewatering drainage, foundation reinforcement, lining structure strengthening and pavement reinforcement of the tunnel, and formulates the inverted arch crack treatment scheme. And the in-tunnel convergence and vault settlement deformation are monitored during the implementation of the scheme. The result shows that the tunnel inverted arch crack treatment scheme formulated according to the above four aspects is reasonable and feasible. After the tunnel is treated according to the scheme, the development of tunnel cracks is effectively inhibited, which provides a guarantee for the safe operation of the tunnel in the later stage. It also provides valuable reference materials for the formulation of the similar engineering treatment schemes.