从地震是地面震动的广义角度来看,地震可分为构造地震、火山地震、塌陷地震、诱发地震和人工地震等几类。 构造地震:由于地球不停地运动和变化,经过漫长的地质年代,逐渐在地壳内部积累了巨大的能量,形成了巨大的应力作用。当地壳某些脆弱的地带承受不了巨大的应力作用时,岩层就可能发生突然破裂,或者引发原有断层的错动,其中以波的形式传到地面的振动就是构造地震。世界上85％～90％的地震以及所有造成重大灾害的强烈地震都属于构造地震。中国发生的地震以构造地震为主。 Seismic can be divided into tectonic earthquake, volcanic earthquake, subsidence earthquake, induced earthquake and artificial earthquake. Tectonic Earthquakes: Due to the constant movement and change of the earth, tremendous energy has been gradually accumulated in the earth’s crust after a long geologic period, forming a tremendous stress effect. When some of the crust in the earth’s crust can not withstand the tremendous stress, the rock may burst suddenly or cause the fault of the original fault. Among them, the vibration transmitted to the ground in the form of waves is the tectonic earthquake. 85% ~ 90% of earthquakes in the world and all the strong earthquakes that caused major disasters belong to tectonic earthquakes. The earthquakes in China are dominated by tectonic earthquakes.