地质超前预报系统在栋梁坡隧道施工中的应用

基于地震反射波法超前预测系统的原理及主要技术手段,以栋梁坡隧道工程为实例,针对隧道复杂的地质条件,施工过程中将超前地质预报和地质素描调查相结合,先对隧道全段范围内地形、地层岩性等进行全面核查,然后结合核查结果运用地震反射波法预报掌子面前方的节理裂隙发育情况,围岩完整性等地质信息。开挖后验证情况与预测结果基本一致,为后续预防突水塌方等隧道地质灾害事故的发生提供数据支撑,有效保证栋梁坡隧道的施工安全。

Application of Advanced Geological Prediction in Dongliangpo Tunnel Construction

In this paper,a tunnel seismic prediction advanced prediction system based on seismic reflection method was presented,and then Dongliangpo Tunnel wheregeological condition iscomplicaatedistakenas example to complete the prediction.The advanced geological forecast and geological sketch survey method arecombined,and the topography,strata and lithology of the whole section of the tunnel are thoroughly verified.Then combined with the verification results,the seismic reflection wave method is used to predict the development of joints and fissures in front of the face,the integrity of surrounding rock and other geological information.After excavation,the verification results are basically consistent with the prediction results.Combined with the effective information,it can provide data support for the subsequent prevention of tunnel geological disasters such as water inrush and collapse,and effectively ensure the construction safety of Dongliangpotunnel.