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前言 滑坡和崩塌是山区常见的重力地质现象,往往在强烈地震中大量发生。它严重地威胁着山区国民经济建设和人民生命财产的安全。1975年前后,我所对炉霍、昭通、松潘—平武、龙陵四个强震区进行过考察,观察到山区强震诱发大量的滑坡、崩塌等块体运动现象。它们所造成的灾害,在一些地方远远超过地震地面运动直接造成的灾害。关于地震怎样诱发斜坡失稳问题的研究,已成为山区人民和地学工作者共同关注的问题。
Preface Landslides and landslides are common gravitational and geological phenomena in mountainous areas, often occurring in large numbers in severe earthquakes. It seriously threatens the security of mountainous areas in national economic construction and people’s lives and property. Before and after 1975, we conducted a survey of four strong earthquake areas such as Luhuo, Zhaotong, Songpan-Pingwu and Longling, and observed massive block-induced movements such as landslides and landslides triggered by the strong earthquakes in the mountains. The disasters they caused far outweighed the disasters directly caused by earthquakes in some places. The research on how the earthquake induced the instability of the slope has become a common concern of the mountain people and geoscientists.