摘要
为了降低岩溶隧道施工风险,基于地质调查法、多种物探法和超前钻探法相结合的综合超前地质预报方法,并在此基础上设计岩溶隧道“七步法”超前地质预报方案,用于探测岩溶隧道的工程、水文地质条件。在张吉怀高铁永顺隧道的实际应用表明,该方法可精准定位掌子面前方不良地质体空间范围与位置,提高预报精准度,降低施工安全风险,同时方便技术人员进行系统自检,查漏补缺。研究结果表明,“七步法”超前地质预报实现了多方法、多属性、多角度、多探测长度的综合预报目标,可较好地解决岩溶超前预报难的问题,为岩溶隧道的安全施工提供技术支持。
In order to reduce the risk of karst tunnel construction,a“seven-step method”was developed in advanced geological prediction on the combination of geological survey,multiple geophysical exploration methods and advanced drilling methods to detect the engineering and hydrogeological conditions of karst tunnel.The practical application in Zhangjiajie-Jishou-Huaihua High-speed Railway Yongshun Tunnel showed that the technical solution improved the accuracy of the forecast,reduced the risk of construction,facilitated the system self-check and accurately located the target of spatial range and the location of poor geological condition in front of the tunnel face.The research shows that the“seven-step advanced geological prediction scheme”can achieve the aim of multi-method,multi-attribute,multi-angle and multi-detection length prediction in and outside the tunnel.The technical scheme can also solve the difficulty of karst geological prediction and provide technical support for the safety construction of karst tunnel.
作者
陈超
CHEN Chao(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)
出处
《铁道勘察》
2023年第4期122-129,共8页
Railway Investigation and Surveying
基金
中国中铁股份有限公司科技开发计划重点课题(产品-研-2016-33-2)。
关键词
高速铁路
超前地质预报
岩溶隧道
施工安全
high speed railway
advanced geological prediction
karst tunnel
safety in construction
