摘要
在岩溶隧道施工过程中,突水突泥灾害时有发生,给隧道施工安全带来不同程度的影响。为了确保岩溶隧道施工安全,须采用地质调查法、地震波反射法、地质雷达法、瞬变电磁法、超前地质钻孔及加深炮孔相结合的综合超前地质预报技术,用以探测岩溶隧道的工程地质与水文地质条件。将该综合探测技术在贵南铁路九万大山一号隧道工程进行了实际应用,通过在不同岩溶地质条件下使用不同的预报方法组合方式及预报方案,探清了隧道的溶洞空间分布、充填物特征及岩溶水性质,提高了预报精确度,降低了施工风险。得出结论:在岩溶隧道中积极采用综合超前地质预报技术,能进一步查明岩溶隧道掘进工作面前方的地质情况,为制订隧道岩溶处理方案及围岩设计变更提供了依据。
Water and mud inrush disasters often occur during the construction of karst tunnels which brings different degrees of impact on the safety of tunnel construction.In order to ensure the safety of karst tunnel construction and reduce the probability and degree of harm of tunnel water and mud inrush accidents,comprehensive advanced geological prediction technology combining geological survey method,seismic wave reflection method,ground penetrating radar method,transient electromagnetic method,advanced geological drilling and deepening blasthole is used to detect the engineering geological and hydrogeological conditions of karst tunnels.Taking the Jiuwandashan No.1 tunnel project of Guiyang-Nanning railway as an example,by using different forecasting methods and schemes under different karst geological conditions,the spatial distribution of karst caves,the characteristics of fillings and the properties of karst water in the tunnel are explored,which improves the forecasting accuracy and reduces the construction risk.It is concluded that the active use of comprehensive geological prediction technology in karst tunnels can further ascertain the geological conditions in front of the karst tunnel excavation work,and provide a basis for formulating tunnel karst treatment plans and surrounding rock design changes.
作者
王玉琴
高树全
Wang Yuqin;Gao Shuquan(China Railway Eryuan Engineering Group Co.Ltd, Chengdu Sichuan 610000, China)
出处
《工程地球物理学报》
2021年第4期538-546,共9页
Chinese Journal of Engineering Geophysics
基金
中铁二院工程集团有限责任公司科研项目(编号:KYY2019017(19-20))。
关键词
铁路隧道
岩溶
突泥突水灾害
综合超前地质预报
隧道施工安全
railway tunnel
karst
water outburst and mud outburst disaster
comprehensive advance geological prediction
tunnel construction safety
