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“5.12”汶川地震直接引发和间接诱发了大量的次生山地灾害。无论从灾害的种类、数量和规模等方面还是从灾害对人类所处的“自然-社会-经济”复杂系统的影响程度来看,由本次汶川地震诱发的次生山地灾害均属国内外罕见。同时,由于各类次生灾害之间相互激发、相互转化,形成了以“崩-滑-灾”、“崩-滑-湖-灾”、“崩-滑-流-灾”为主要表现形式的灾害链和灾害网。根据上述地震次生山地灾害链(网)的表现形式、发育成灾特点、成因分析等方面展开论述,描述了上述3条主要灾害链的发育成灾过程,总结出了上述地震次生山地灾害链的4条发育成灾规律,并从自然因素和人为因素等方面简要分析了本次汶川地震次生山地灾害链网的发育成因。
“5.12 ” Wenchuan earthquake directly and indirectly induced a large number of secondary mountain hazards. No matter from the aspect of disaster type, quantity and scale, or from the influence degree of disasters on the “natural-society-economy” complex system of human beings, the secondary mountainous disasters induced by this Wenchuan earthquake belong to China Rare outside. At the same time, due to the mutual excitation and mutual transformation of various secondary disasters, the formation of “disaster-slip-disaster”, “collapse-slip-lake-disaster”, “collapse-slip- ”As the main manifestation of the disaster chain and disaster network. According to the manifestations, developmental characteristics and causes of the above-mentioned mountainous disaster chains (earthquakes), this paper describes the process of development and disaster of the above three main disaster chains and summarizes the above-mentioned earthquake-induced mountainous disaster Chain development and disaster law, and from the natural and human factors and other aspects of a brief analysis of the Wenchuan earthquake secondary mountain chain development cause of the disaster.