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何谓地质灾害?自然的变异和人为的作用都可能导致地质环境或地质体发生变化,当这种变化达到一定程度、其产生的后果给人类和社会造成危害时,便称为地质灾害,如崩塌、滑坡、泥石流、地裂缝、地面沉降、地面塌陷等。三峡库区处于我国地势第二级阶梯的东缘,是典型的峡谷地理形态,其自然地质条件复杂,生态环境脆弱,暴雨洪水频繁,历来是地质灾害多发区。三峡库区发生地质灾害的情况早在宋朝就有记载。从1982年到三峡水库修建之前,也发生过
What is geological disasters? Both natural and man-made effects may lead to changes in the geological environment or geological bodies. When such changes reach a certain level and their consequences may cause harm to human beings and society, they are called geological disasters such as collapsing , Landslides, debris flow, ground fissures, land subsidence, ground subsidence and so on. The Three Gorges Reservoir Area is located on the eastern edge of the second-order terrain of our country. It is a typical canyon geography with complicated natural and geological conditions, fragile ecological environment and heavy storm floods. It has always been a frequent area with geological disasters. The occurrence of geological disasters in the Three Gorges reservoir area has been recorded as early as the Song Dynasty. From 1982 to the Three Gorges reservoir before the construction, but also occurred