小秦岭地区泥石流发生趋势研究

泥石流灾害受地质、地貌、水文、气象、土壤、植被等自然因素和人为因素综合作用的控制,是山区地质环境和生态环境恶化的产物。介绍了小秦岭地区的地形地貌、气象与水文、岩土体性质以及人类活动情况,按耗散结构熵变的观点,建立了小秦岭地区泥石流灾害趋势系统熵模型,并进行了评价与验证,指出了该模型存在的不足之处;归纳出9个主要泥石流发生的环境条件因子,对其量化权重标准进行了说明与评价;对以后小秦岭地区泥石流趋势分析方向进行了展望。

The Trend of Mud Flow Occurred in Xiaoqinling Region

Mud flow disaster is controlled by an integrated action of natural factors of geology,geomorphology,hydrology,meteorology,soil and vegetation and artificial factors and is the outcome of deterioration of geologic and ecologic environment of mountainous area.It introduces the topography,landforms,hydrology,meteorology,the nature of rock and soil mass and human activities of Xiaoqinling region,builds up system entropy model of mud flow disaster trend of the region,conducts evaluation and validation and points out the existed shortage of the model based on the standpoint of entropy variation of dissipation structure;sums up nine main factors of environmental conditions for mud flow happening and explains and evaluates the standard of quantization and weight and;prospects for the tendency orientation of mud flow of the region in the future.