基于Matlab麻阳地区土质边坡坡度与滑坡发育概率关系研究

为查明麻阳地区滑坡发育规律,发掘斜坡坡度与滑坡发育概率之间关系。通过基于Matlab数学软件对麻阳地区129处滑坡发育的原始斜坡坡度进行研究,发现区内滑坡发育频数与坡度具有正态分布特征,调用Jarque-Bera法检验其服从正态分布,接着应用软件内置拟合工具箱求得正态函数关系式与滑坡发育概率。研究结果表明:研究区内山坡坡度区间为23°~43°时,发生滑坡概率为67.72%;坡度在13°~23°与43°~55°区间时,发生滑坡概率为28.87%;坡度小于13°或大于55°时,发生滑坡概率为3.41%。所得分析结果与实际调查的情况吻合较好,可为区内滑坡防治规划提供参考,也为其他从事地质灾害研究工作者提供新的研究思路。

Research on Relationship between Slope Gradient and Landslide Probability of Mayang Area Based on BP Neural Network

In order to ascertain the landslide development law in the Mayang area,the relationship between slope slope and landslide development probability was excavated.Based on Matlab mathematical software,the original slopes of 129 landslides developed in the Mayang area were found,and the frequency and slope of landslide development in the area were found to have normal distribution characteristics.The Jarque-Bera method was called to verify that they obey the normal distribution.The fitting toolbox is used to obtain the normal function relationship and the landslide development probability.The research results show that the landslide probability was 67.72%when the slope interval was 23°~43°in the study area;the landslide probability was 28.87%when the slope was between 13°~23°and 43°~55°;when the slope was less than 13°or more than 55°,the probability of landslide was 3.41%.The analysis results obtained were in good agreement with the actual survey situation,which can provide reference for the landslide prevention planning in the area,and also provide new research ideas for other researchers engaged in geological disasters.