厦门海底隧道围岩稳定动态反演分析

DYNAMIC DISPLACEMENT BACK-ANALYSIS ON STABILITY OF SURROUNDING ROCKS ALONG XIAMEN SUB-SEA TUNNEL

位移反分析法作为联系理论与实际的桥梁,为工程决策、设计与施工提供了切实可行和有效的方法。为解决海底隧道勘察、设计与施工技术难题,减小设计与施工风险,通过对先行服务隧道建立动态反演预测模型,及时对主隧道前方地质情况进行超前预报,并对围岩稳定性进行准确判断,根据反馈信息,对主洞前方设计与施工方案进行科学合理地组织,必要情况下须对原设计的隧道支护参数与施工方法作调整和修正,做到动态信息化设计与施工,确保海底隧道顺利穿越。

The method of displacement back - analysis bridges between theory and practice, and provides a feasible and effective method for design and construction of rock engineering works. For resolving the problems about geological exploration, design and construction and reducing risk, the dynamic displacement back -analysis mode is established for advancing service tunnel. Based on the information feedbacks and forecasting the geology of main tunnel and judging the stability of surrounding rocks, the detailed measures and schemes for design and construction is proposed for the main tunnel. As necessary, adjustments and variations on the preliminary design parameters and schemes of the tunnel lining during construction are carried out. The timely feedbacking between design and construction contributes an effective method for successful tunneling below the sea water.