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甘肃省是我国滑坡地质灾害最为严重的省份之一,根据最新调查结果表明,区内发育有滑坡18392处,其中,2008年5月12日四川汶川8.0级大地震在甘南和陇南地区诱发滑坡405处。省内广泛分布的黄土、泥岩、千枚岩、页岩等软弱易滑岩土体,为滑坡发育提供了必要的地形地貌条件和岩土条件,自然条件和地震及人类活动是诱发因素。长期以来,频繁发生的滑坡灾害已给甘肃人民的生命财产和工农业生产建设带来了严重威胁和危害,造成了巨大的经济损失和人员伤亡,严重困扰和制约着甘肃省的国民经济发展和广大人民群众的正常生活。所以,深入研究甘肃省的滑坡地质灾害对防灾和减灾具有重大的现实意义。
Gansu Province is one of the most serious landslide geological disasters in our country. According to the latest survey results, there are 18392 landslides in the area. Among them, the Wenchuan 8.0 earthquake on May 12, 2008 caused landslides in Gannan and Longnan 405 Department. The loess, mudstone, phyllite and shale, which are widely distributed in the province, provide the necessary landform and geotechnical conditions for landslide development. Natural conditions, earthquakes and human activities are predisposing factors. For a long time, frequent landslide disasters have brought serious threats and harms to the life and property of Gansu people and the industrial and agricultural production and construction, resulting in huge economic loss and casualties, seriously disturbing and restricting the development of the national economy in Gansu Province. The masses of people’s normal life. Therefore, in-depth study of landslide geological disasters in Gansu Province has great practical significance for disaster prevention and mitigation.