Abstract: Formation, avalanche and movement of perilous rock are ones of dynamic evolution processes of slope in the area of the Three Gorges Reservoir. Geomorphologic formalities of cliff with anti-terraces are macro-evidences for perilous rock to evolve by stages. On the bases of investigations in real-time field to about ten thousands of perilous rock to perilous rocks and geomorphologic analysis principle, the chained regularity of perilous rock in the area of the Three Gorges Reservoir was discovered. The regularity includes micro-chain and macro-chain. Micro-chain designates for perilous rock to form surface of slope. The regularity shows two models, one belongs to simple model only with one macro-chain, and the other belongs to complex model with many macro-chains at the same time. Formation processes of rock cell and unloading of rock above the rock cell belong to the initial dynamics for perilous rock to develop.

Key words: geography, chained regularity, geomorphologic evolution, perilous rock, the area of the Three Gorges Reservoir

摘要： 危岩的形成、失稳崩塌与运动是三峡库区边坡动力演化过程的主要形式之一,陡崖逆向台阶地貌形迹是危岩阶段性演化的宏观表象。基于对库区内近万个危岩的现场调查并结合地貌分析原理,发现了三峡库区危岩链式规律,包括危岩从坡脚向坡顶逐渐崩落的微观链和从临空面向山体内部后退的宏观链;危岩链式规律可分为仅有一个宏观链简单模式和多个宏观链同时发育的复合嵌套模型;陡崖坡脚岩腔的形成过程及其卸荷效应是三峡库区危岩链式规律的孕育源。

关键词: 地貌学, 链式规律, 演化, 危岩, 三峡库区