地震勘探是最重要的物探方法中的一种,它是根据人工激发的地震波在地壳內传播的特点,来研究地壳地质結构的一种方法。一地震勘探的基本原理在地下进行爆炸或用重錘敲击地面时,就产生地震波,它以一定速度向四处传播。設地震波在介质中传播速度为V,在离爆炸点O一定距离r处有一点M,在波到达之前,M点处于靜止状态。在时間 Seismic exploration is one of the most important geophysical methods. It is a method of studying the geological structure of the crust on the basis of the characteristics of artificial seismic waves propagating in the earth’s crust. A basic principle of seismic exploration In the underground explosion or hammer struck the ground, it produces seismic waves, which spread to a certain speed around. Let seismic wave propagation velocity in the medium V, a point M at a certain distance r from the explosion point O, before the wave arrives, M point is at rest. In time