采用探地雷达对隧道掌子面前方地质状况进行超前预报

探地雷达是用高频无线电波来确定介质内部物质分布规律的一种地球物理方法。在断层、地下水、裂隙及其影响等不利地质情况下,常诱发坍塌、冒顶、涌水等地质灾害发生,利用该方法,能够较准确地预报出掌子面前方20 m左右范围内的地质状况。通过实例对地质雷达扫描图像进行了具体的解译,对隧道实际开挖进行现场跟踪,并对设计、预报成果和实际揭露资料进行对比,说明探地雷达是隧道施工中的一种较好的超前地质预报手段。

Forecast on the Geological Conditions of Work Face in Tunnel with Ground Penetrating Radar

The ground penetrating radar is a geophysical method using high-frequency radio waves to assure the distribution of the internal material.The negative impact of fault,groundwater,fracture on the geological circumstances often induces collapse,cave,gushing water and other geological disasters.This method can accurately forecast the geological conditions within about 20 meters in front of work face.Taking the examples,a specific interpretation on the geological radar scanned image was carried out,and the actu...