Using Ground Penetrating Radar Method for Grouting Inspection of the Baodingshan-Beishan Expressway Tunnel in Chongqing
The traditional geological radar detection method is mainly used for detecting the position of lining cavities and lining steel bars.This method cannot accurately determine the status and depth of tunnel grouting,and is not suitable for detecting the quality and depth of grouting after tunnel lining.For this purpose,research was improved the traditional geological radar detection method by adding a signal reflection device in the grouting hole,which enhanced the radar reflection wave without affecting the grouting construction,thereby identifying the grouting status and depth,and achieving the purpose of grouting quality detection.It is verified through application examples in Baotang Tunnel and Longgang Tunnel that the improved geological radar detection method can judge the status of tunnel lining and surrounding rock grouting,and take corresponding measures for rework in a timely manner.
万方数据
维普
