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地质雷达与TGP206在楚阳隧道超前地质预报中的应用

Keywords: 隧道工程,公路隧道,地质雷达,超前地质预报,TGP206

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Abstract:

针对地质超前预报,首先,分析对比了地质雷达和TGP206这2套超前地质预报系统的探测原理,以巫奉高速公路楚阳隧道出口ZK2+446~ZK2+346、YK2+750~YK2+670和YK2+180~YK1+980地段为工程实例,介绍了地质雷达和TGP206在探测楚阳隧道掌子面前方不良地质工况的原理和方法,验证了探测结果和实际施工情况基本吻合.其次,通过对这2种物探方法在楚阳隧道超前地质预报中的各自特点比较可以看出,它们都能及时提供隧道掌子面前方以及隧道周围地质条件变化信息,但两者又有不同的特点,地质雷达探测距离虽短,但准确度较高;TGP探测距离较长,准确性也较好,但设备成本相对比较高.它们各自的特点可为类似公路隧道施工中地质预报设备的选择提供参考.

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