Application of multi-physical prospecting technology in grouting detection of karst subgrade of Hunan-Guangxi railway
In view of the complexity and limitations of the grouting effect detection of the karst subgrade of the existing railway line,combined with the karst subgrade effect detection of the Ertang Station of the Hunan-Guangxi Railway,the grouting effect is comprehensively evaluated by studying and analyzing the change of the wave velocity before and after the grouting.The results show that the application of the multi-channel surface wave method on the surface can carry out the grouting detection work all-weather,efficiently and reliably.The application of elastic wave CT method between wells can accurately depict the shape of underground targets.The combination of the two methods can not only quickly identify the abnormal range,but also accurately identify the abnormal shape.
万方数据
维普
