And the geophysical methods include TSP, Ground Penetrating Radar (GPR), seismic negative apparent velocity method, HSP an d so on and these method have their own advantage each other.

• 用于超前地质预报的物探方法主要有,TSP法、地质雷达法、地震负视速度法、陆地声纳法、HSP声波反射法等,这些方法在应用中各有所长。