铁路隧道施工突泥突水超前预报方法

Advanced Prediction Method of Mud and Water Gushing in Railway Tunnel Construction

突泥突水超前预报对于复杂地质结构的隧道施工至关重要。目前广泛采用的地震波反射法超前地质预报,有很多成功应用经验,该方法对构造类病害(断层破碎带、溶腔溶洞)比较有效,但由于地震分析处理技术的适应性受到局限,导致仍存在缺乏明确指标对富水带的判读。TGS360Pro地质超前预报系统在地震波反射分析处理技术的基础上,增加动态流体分析的新专利技术,可实现对流体类病害的预报,从而全面预报断层破碎带、溶腔溶洞、富水带/突泥突水3类主要地质病害。阐述利用TGS360Pro地质超前预报系统实现含水预报的原理,并通过多项隧道工程预报案例的验证,表明该方法能够有效提升铁路隧道安全施工的保障能力。

The advanced prediction of mud and water gushing is crucial for tunnel construction of complex geological structure.At present,there are many successful experiences in the application of seismic wave reflection method adopted widely for advanced geological prediction.The method is relatively effective for structural diseases(fault fracture zone,karst cavity and karst cave).However,there is still a lack of clear indicators to interpret the water-rich zone due to the limited adaptability of seismic analysis and processing technology.On the basis of seismic wave reflection analysis and processing technology,TGS360Pro geological advanced prediction system is additionally provided with a new patent technology of dynamic fluid analysis,which can realize the prediction of fluid diseases,and thus comprehensively predict three major geological diseases,namely fault fracture zone,karst cavity and karst cave,water-rich zone/mud and water gushing.This paper expounds the principle of realizing water cut prediction by TGS360Pro geological advanced prediction system,and shows that the method can effectively improve the guarantee capability for safe construction of railway tunnel through the verification of several tunnel engineering prediction cases.