探地雷达法与面波法在某地下人防工程勘查中的应用

Application of ground-penetrating radar method and surface wave method in the survey of an underground air defense engineering

对某在建商业小区的地下人防工程开展探地雷达法与面波法勘探,以查明该地下人防工程的埋深与位置,布置了8条探地雷达法和9条面波法勘探剖面。根据探地雷达法勘探结果可知,在物探剖面水平位置18~22 m处,信号整体振幅强,绕射波很多,深部出现多次震荡信号,解释该异常为砂岩夹层的反映。结合面波法勘探结果可知,在水平位置9~11 m处,深度-11~-13 m范围内剪切波速表现为低速闭合圈异常,为地下人防工程的反映。有效地圈定了地下人防工程的空间位置,为后期商业小区的地下基础建设提供了重要的基础资料。

Ground-penetrating radar and surface-wave exploration were carried out to determine the burial depth and location of the underground air defense engineering of a commercial district under construction.Eight ground-penetrating radar profiles and nine surface-wave exploration profiles were arranged for this purpose.According to the exploration results of ground-penetrating radar method,at the horizontal position of 18~22 m on the physical prospecting profile,the overall signal amplitude was strong with many bypass waves and multiple oscillation signals in the deep part.This anomaly was explained as the reflection of sandstone interlayer.Combined with the exploration results of surface wave method,it was detected that the shear wave velocity exhibited a low velocity anomaly within the range of depth-11~-13 m at the horizontal position 9~11 m,which was determined to be the reflection of underground air defense engineering.The spatial location of the underground air defense engineering was effectively traced,which provided important basic information for the underground infrastructure construction of the commercial district in the later stage.