四川省泥石流危险度区划

Risk Factors Zoning of Debris Flow in Sichuan Province

四川省是泥石流灾害极其严重的地区之一 ,泥石流分布广、数量多 ,无法用直接指标进行危险度区划 ,但仅靠间接指标进行区划 ,区划结果的准确性又难以验证。泥石流危险度区划的模糊信息模型 ,采用了信息论中信息量概念和模糊数学中模糊评判的方法 ,是一种直接指标与间接指标相结合的区划方法 ,区划结果可以得到有效的验证。四川省泥石流危险度区划就是利用川西地区详尽的泥石流资料建立的模糊信息应用模型作出的。

Sichuan province is one of the regions with heaviest debris flow disasters. Its difficult to zone with direct indexes for large quantity and wide distribution of debris flows, and the result of zoning with indirect indexes cant be checked. The fuzzy information model of debris flow risk factors based on the information content in information theory and the fuzzy evaluation of fuzzy mathematics, is a zoning method associated with direct and indirect indexes. The result of zoning can be checked with the completed debris flow data. The risk factors zoning of debris flow of Sichuan province is made out with the fuzzy information model based on the completed data of debris flows of the west part of Sichuan province.