地质雷达在黄土隧道中做超前地质预报的应用研究

超前地质预报是根据地表和已开挖隧道的地质调查和各种探测方法取得的资料,以及地质推断法预测开挖工作面前方一定长度范围内围岩的工程地质和水文地质条件。隧道施工时应根据设计图纸和现场具体情况做好地质超前预报工作,并及时反馈预报结果,以便修改支护参数或开挖方式,确保施工和营运的安全。

Application of Advanced Geological Forecast Obtained by Ground Penetrating Radar in Loess Tunnel

The advanced geological forecast is a method that to forecast the engineering geological and hydro geological condition of the wall rock within certain range in front of excavating working face according to the data obtained by the geologic survey on ground surface and excavated tunnel and various detection methods, as well as the geologic extrapolation method. Advanced geological forecast should be implemented according to design draw- ing and field situation during tunnel construction, and the forecast result should be fed back in time in order to amend supporting parameters or excavating method for ensuring the safety of construction and operation.