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在复杂地质条件下修建隧道或开挖巷道,即使在施工前和施工期间采取多种物探或监测方法和手段,坍塌或突水涌泥仍时有发生。结合某在建高速公路宝塔山3#斜井开挖坍塌、突水涌泥实例,利用隧道地质勘探资料分析、监控量测数据及超前地质预报资料等,分析了该区域岩层运移破坏规律。研究表明在泥砂岩互层结构地层施工中,坍塌突水涌泥过程具有渐进-突发的特性,及时汇总和分析各项资料,可通过预警有效避免灾难的发生。该研究成果可为相似地层结构中隧道或巷道的修建提供有益的参考。
Construction of tunnels or excavation of tunnels under complicated geological conditions can occur even when collapsing or bursting muds occur even during various geophysical or monitoring methods and measures before and during construction. Combined with the example of tunnel collapse and water bursting excavated in No. 3 # incline of Paotushan highway under construction, the authors analyzed the law of rock movement failure in this area by using the data of tunnel geological exploration, the monitoring data and the advanced geological forecast data. The research shows that in the construction of siltstone interbedded strata, the process of water inrush from slump has a gradual and sudden characteristic, and the information can be summarized and analyzed in time, and the disaster can be effectively prevented by early warning. The results of this study can provide useful references for the construction of tunnels or tunnels in similar stratigraphic structures.