论文部分内容阅读
因地震引起的滑坡可划分为5种类型:陡坡型、中间层型、液化型、地下水型和人工坡型。其中陡坡型最为常见,根据岩石硬度(用内摩擦角和粘度表示)和坡度角的判据可得出其预测方法。中间层型经常发生在缓坡上,且规模很大,最具危害性。这种类型滑坡的直接起因是由于白色凝灰石或浮石层失稳所造成的。液化型和地下水型滑坡的机制还不很清楚,发展其预测技术仍然是未来的研究课题。就城市防灾而言,人工坡型滑坡是一个主要的问题,然而,有关这方面的研究进展却很缓慢。
Landslides caused by the earthquake can be divided into five types: steep slope type, intermediate type, liquefaction type, groundwater type and artificial slope type. Among them, the steep slope type is the most common. According to the criteria of rock hardness (indicated by internal friction angle and viscosity) and slope angle, the prediction method can be obtained. The middle layer often occurs on gentle slopes, and is very large and most dangerous. The direct cause of this type of landslide is due to the instability of the white tuff or pumice layer. The mechanisms of liquefaction and groundwater landslides are not well understood and developing their predictive techniques remains a topic of future research. Artificial slope landslide is a major problem in urban disaster prevention, however, research on this area is slow.