微表处在雅西高速公路隧道水泥路面抗滑处治中的应用

Application of Micro-surfacing in Anti-skid Treatment of Cement Pavement of Yaxi Expressway Tunnel

为了解决雅西高速隧道水泥路面抗滑性能衰减过快影响行车安全的问题,采用微表处技术进行养护处治。对比分析了处治前后路面抗滑性能并进行了长期监测,结果表明:两座隧道的水泥混凝土路面抗滑性能均以差为主,且隧道内水泥混凝土路面的抗滑性远低于隧道外沥青路面的抗滑值;微表处处治后的隧道水泥混凝土路面的横向力系数得到大幅度提高,分别达到89.4和81.3,远大于规范要求值;抗滑性能会随着时间的增加而降低,通车一年后罗家山隧道横向力系数为46.4,扯羊隧道横向力系数为41,通车一年后横向力系数平均降低了35.02%。

In order to solve the problem that the skid resistance of cement pavement of Yaxi Expressway Tunnel decays too fast and affects driving safety,micro-surfacing technology was used for maintenance treatment.The skid resistance of the pavement before and after the treatment was compared and analyzed,and long-term monitoring was carried out.The results show that the skid resistance of cement concrete pavement in both two tunnels is mainly poor,and the skid resistance of cement concrete pavement inside the tunnel is far lower than that of asphalt pavement outside the tunnel.The lateral force coefficients of cement concrete pavement in the two tunnels are greatly improved after micro-surfacing treatment,reaching 89.4 and 81.3,respectively,which are much higher than the required values in the standards.The skid resistance decreases with the increase of time.After one year of operation,the lateral force coefficients of Luojiashan Tunnel and Cheyang Tunnel are 46.4 and 41,respectively,indicating that the lateral force coefficient decreases by 35.02%on average after one year of operation.