运营公路隧道安全评估

通过对某运营公路隧道的衬砌和路面状况、衬砌厚度与其背后回填状况、衬砌混凝土强度、隧道净空断面、风道吊杆和吊顶板、隧道路面横坡及抗滑性能等的调查与检测,对其安全性进行了评估,结果表明下行隧道病害严重,已达到“2A”级,需要尽早对隧道衬砌背后的空洞、隧道衬砌裂缝和渗漏水等问题进行全面综合整治。文章介绍了该隧道安全评估的检测项目、方法及频率。

The safety assessment of a road tunnel

The paper introduces the items,techniques and frequency of inspections for the safety assessment of a road tunnel.Investigations and inspections have been carried out for a tunnel under operation to examine its lining and pavement status,lining thickness,back filling status behind the lining,the strength of lining concrete,clearance,the hanger rods of wind ducts,suspended ceiling boards,the transverse slope of pavement and its anti-slip capability and so on and to evaluate its security.Result of the evaluation indicates that in the down line tunnel there exist severe defects of up to "2A" level.So the cavities behind the lining,the cracks of tunnel lining and water leakages should be treated thoroughly as quickly as possible.