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为研究浅埋偏压段的围岩稳定性,以烟海高速解家河隧道为例,采用地质雷达进行了地质超前预测,并针对探测结果,进一步优化施工方案,确定了超前注浆、超前小导管的施工方法。最后采用现场监控量测的方法对浅埋偏压段进行监测,结果表明,监测数据稳定,所采用的施工方案可行;浅埋偏压段洞室稳定,确保了隧道施工的顺利进行,对类似工程具有一定的借鉴意义。
In order to study the stability of surrounding rock in the shallow bias section, taking Gejiahe tunnel of Yanhai Expressway as an example, geological prediction is conducted by using geological radar. According to the result of exploration, the construction plan is further optimized, and the advanced grouting, Small catheter construction methods. At last, the method of on-site monitoring and measuring is used to monitor the shallow bias section. The results show that the monitoring data is stable and the construction scheme adopted is feasible. The stability of the shallow bias section caverns ensures the smooth construction of the tunnel. Engineering has a certain reference value.