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泥石流犹如潜卧在山区的“恶龙”,瞬间爆发,摧山拉石,顷刻毁灭前进道路上的一切,是山区最严重的自然灾害之一。泥石流在地球的分布,不像地震、火山那样明显,成带成片,但也有一定的规律可寻。凡是峡谷山区、断裂构造带、地震火山多发区,泥石流比较常见,暴雨期且具群发性。阿尔卑斯—喜马拉雅山系、环太平洋山系和欧亚大陆内部一些褶断山区,是泥石流的集中发生区;非洲、澳洲、美洲东部等稳定陆块就比较罕见。全世界有50多个国家分布泥石流,其中以中国、日本、瑞士、秘鲁、哥伦比亚最为突出。本世纪伤亡最大的两次泥石流都发生在安第斯山系(属环太平洋山系),一是1970年
Debris flow like a “dragon” buried in the mountains, instantaneous eruption, destroy rocks, and immediately destroy everything on the road ahead, is one of the most serious natural disasters in the mountains. Debris flow in the Earth’s distribution, unlike earthquakes, volcanoes as obvious, into a film, but there are certain rules to be found. Any canyon mountain, fault zone, earthquake volcanic areas, debris flow is more common, heavy rain and with mass. The Alps-Himalayas, the Pacific Rim and some fold-broken mountains in the Eurasian continent are the places where the debris flow is concentrated. Stable land blocks such as Africa, Australia and the eastern part of the Americas are relatively rare. There are more than 50 countries around the world, including China, Japan, Switzerland, Peru and Colombia. Two of the largest casualties of this century occurred in the Andes (belonging to the Pacific Rim), first in 1970