微重力测量及浅层地震在岩溶勘查中的应用

Application of Microgravity Measurement and Shallow Earthquake in Karst Exploration

微重力测量是利用目标地质体与围岩的密度差异进行探测的地球物理方法,通过采集的重力异常数据来分析地下地质体物理性质。浅层地震勘探则利用介质的波阻抗差异来探测地下岩溶的方法。微重力测量与浅层地震在探测岩溶、断裂效果显著,而且微重力测量对弱小异常敏感,能够将其识别出来。

Microgravity measurement is a geophysical method to detect the density difference between the target geological body and the surrounding rock,and analyze the physical properties of the underground geological body through the collected gravity anomaly data.Shallow seismic exploration uses the difference of wave impedance of medium to detect underground karst.Microgravity survey and shallow seismic are effective in detecting karst and fault,and they are sensitive to weak anomalies and can be identified.