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地质灾害是指由于自然和人为地质作用,使生态环境遭到破坏或地质体发生变化而产生的灾害性事件。地质灾害的种类比较多,常见的有地震、火山、滑坡、泥石流、地面塌陷、地面沉降、地裂缝、崩塌、煤岩和瓦斯爆炸等,由于火山、地震等地质灾害发生的频率比较低,地裂缝、崩塌等地质灾害也不多见,所以当前对我国影响极大的不是地震、火山等地质灾害,而是滑坡、泥石流、塌陷和地面沉降。我国的地质灾害扫描我国是世界上地质灾害十分严重的国家,目前全国每年因自然灾害所造成的损失在1000亿元以上,其中地质灾害(不包括地震)所造成的损失占1/4左右。1998年全国发生了不同规模的塌陷、滑坡、泥石流等突发性地质灾害达8万起左右,造成
Geological disasters refer to the disastrous events caused by the destruction of the ecological environment or the change of geological bodies due to natural and man-made geological effects. There are many kinds of geological disasters, such as earthquakes, volcanoes, landslides, debris flows, ground subsidence, ground subsidence, ground fissures, landslides, coal and rock explosions, and gas explosions. Because of the relatively low frequency of geological disasters such as volcanoes and earthquakes, Therefore, it is not earthquakes, volcanoes and other geological disasters, but landslides, debris flows, subsidence and land subsidence. China’s geological disaster scanning China is a country where the geological disasters are very serious in the world. At present, the annual natural disaster losses in China are over 100 billion yuan, of which about 1/4 is caused by geological disasters (excluding earthquakes). In 1998, there were about 80,000 sudden geological disasters such as landslides, landslides and mudslides that occurred in different scales in the country, resulting in