摘要
隧道在施工过程中掌子面前方病害地质体会严重影响施工进度,有时甚至会危及施工设备及人身安全。地质雷达、红外探水等超前预报是以掌子面前方地质体的物性参数为基础,探测掌子面前方围岩变化情况的地球物理方法。地质雷达是以地质体的电性差异为基础的浅层地质勘探手段,对裂隙、破碎带、富水区域及岩溶、空洞有较好的反应。红外探水是以不同地质体红外场强度存在差异性为基础的探测方法,定性分析掌子面前方是否存在隐伏含水体。本文通过地质雷达法、红外探水法两种方法在南天高速公路隧道超前预报中的综合应用,分析认为上述两种方法的综合应用在预报富水地质体方面具有可行性。
In the process of tunnel construction,the geological diseases in front of tunnel face will seriously affect the construction progress,and sometimes even endanger the construction equipment and life safety.Advance prediction methods such as geological radar and infrared water exploration are used to detect the change of surrounding rock in front of the palmface based on the physical property parameters of the geological body in front of the palmface through geophysical methods.Geo-radar is a shallow geological exploration method based on the electrical difference of geological bodies,which has a good response to fissures,broken zones,water-rich areas,karst and cavities.Infrared water exploration is a detection method based on the difference of infrared field intensity of different geological bodies to qualitatively analyze whether there is hidden water body in front of the palm face.Based on the comprehensive application of geological radar method and infrared water exploration method in the advance prediction of Nantian expressway tunnel,it is considered that the comprehensive application of the above two methods is feasible in the prediction of water-rich geological body.
作者
孙凯
朱占龙
Kai Sun;Zhanlong Zhu(Qinghai transportation planning and Design Institute Co.,Ltd,Xining 810008,China;China Railway Northwest Research Institute Co.,Ltd,Lanzhou 730070,China)
出处
《青海交通科技》
2021年第4期142-149,共8页
Qinghai Transportation Science and Technology
关键词
隧道
超前预报
富水区域
地质雷达
红外探水
tunnel
advanced forecast
rich water area
geological radar
infrared water detection
