小秦岭地区泥石流环境条件量化研究与趋势分析的系统熵模型

小秦岭地区位于秦岭东段,是我国地质环境破坏比较严重的地区之一,泥石流灾害频发,造成了生命财产的重大损失.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,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.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,进行了评价与验证,指出了该模型的不足之处,并对以后小秦岭地区泥石流趋势分析方向进行了展望.

System Entropy Model on Quantization Research and Trend Analysis of Debris Flow Environmental Conditions in Small Qinling Area

Located in the east section of Qinling Mountains,Small Qinling is one of more serious areas where the geologic environment is destroyed.Here the disaster of debris flow often happens,which has caused a big loss of life and property.Under the comprehensive influence of geology,landform,hydrology,meteorology,agrology,and vegetation,the debris flow is a result of environmental deterioration in geology and ecology.The article firstly introduces here landform,meteorology,hydrology,the features of rock mass,and human activities,sums up 9 main environmental factors that results in the debris flow and analyzes their weight standards after quantization.Secondly,based on the entropy theory of dissipative structure,it establishes here the entropy model of trend system of debris flow,evaluates and proves it,and at the same time points out the defects of the model.Finally it makes a bright expectation for the analysis orientation of debris flow trend in Small Qinling area.