地质雷达在勐远3号隧道超前地质预报中的应用
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摘要
超前地质预报是保证隧道施工安全的重要环节,文中以云南小磨高速公路勐远3号隧道为工程背景,采用RIS-K2型地质雷达进行超前地质预报,阐述了地质雷达的工作原理及使用方法,通过对现场采集的雷达图像进行分析,并用Reflexw软件进行后处理,结合掌子面地质情况,对不同开挖断面进行了分析研究。以斜向节理面及富水带为例,地质预报结果与现场开挖结果较吻合,证实了隧道施工过程中采用地质雷达进行超前地质预报较准确可行。
Advance geological forecast serves as a guarantee for the construction safety in tunnel excavation.Based on the construction project of Mengyuan No.3 Tunnel on Xiaomo Highway in Yunnan Province,advance geological forecast of Mengyuan No.3 Tunnel is conductedby using RIS-K2 ground penetrating radar(GPR)and the working principles and application methods of GPR are elaborated.Through analyzing the radar images acquired at the construction site and processing them by Reflexw software,different excavation sections are analyzed combined with the tunnel faces at the construction site.By taking the diagonal joint surfaces and water-rich districts as examples,their forecast results are comparatively consistent with the on-site tunneling results.Therefore,it is confirmed that the application of GPR in advance geological forecast of tunnel construction is relatively accurate and feasible.
Advance geological forecast serves as a guarantee for the construction safety in tunnel excavation.Based on the construction project of Mengyuan No.3 Tunnel on Xiaomo Highway in Yunnan Province,advance geological forecast of Mengyuan No.3 Tunnel is conductedby using RIS-K2 ground penetrating radar(GPR)and the working principles and application methods of GPR are elaborated.Through analyzing the radar images acquired at the construction site and processing them by Reflexw software,different excavation sections are analyzed combined with the tunnel faces at the construction site.By taking the diagonal joint surfaces and water-rich districts as examples,their forecast results are comparatively consistent with the on-site tunneling results.Therefore,it is confirmed that the application of GPR in advance geological forecast of tunnel construction is relatively accurate and feasible.
引文
[1]叶英.隧道施工超前地质预报[M].北京:人民交通出版社,2011.
[2]胡先进,王争,任梓绮.地质雷达在隧道地质超前预报中的应用[J].黑龙江交通科技,2016(3):118-119.
[3]巫克霖,温春桥,蒋庆彬.探地雷达在地质复杂环境下对富水区的超前预报[J].工程勘察,2016(10):66-71.
[4]石磊.地质雷达在赐儿山隧道超前地质预报中的应用[J].路基工程,2016(1):169-171.
[5]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].煤田地质与勘探,2008,36(4):57-60.
[6]杨成铭,刘军.地质雷达在蜈蚣岩隧道超前预报中的应用[J].中国水运,2016,16(5):232-233.
[2]胡先进,王争,任梓绮.地质雷达在隧道地质超前预报中的应用[J].黑龙江交通科技,2016(3):118-119.
[3]巫克霖,温春桥,蒋庆彬.探地雷达在地质复杂环境下对富水区的超前预报[J].工程勘察,2016(10):66-71.
[4]石磊.地质雷达在赐儿山隧道超前地质预报中的应用[J].路基工程,2016(1):169-171.
[5]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].煤田地质与勘探,2008,36(4):57-60.
[6]杨成铭,刘军.地质雷达在蜈蚣岩隧道超前预报中的应用[J].中国水运,2016,16(5):232-233.