摘要
从影响库岸稳定性的诸因素中筛选出六个主要因素:坡度、坡体形态、坡体完整性程度、库水面宽度、主风向与库岸夹角及坡体结构,根据其影响程度确定了它们的权重,将库岸稳定性分为良好、较好、较差和差四级。按照各个影响因素对斜坡和各级稳定性的影响不同,对各单因素进行离散化处理,得到各影响因素的隶属度矩阵。通过对各单因素矩阵与影响因素权重运算,得到各个单元分区的稳定性评价结果。运用该方法对新疆某水电站近坝库岸段20km的稳定性进行了评价,认为稳定性较差库岸段总长约4.1km,占20.3%,主要为地质灾害分布处及工程地质条件较差的地段。该综合评判成果与现场勘察及遥感解译结果较为一致。
Stability of reservoir bank segmentation is the important part of the reservoir bank geological engineering research, mainly based on the field statistical investigation and empirical judgment, using the qualitative description and analysis or engineering analogy to research. It has uncertainties and factitiousness. Using the fuzzy mathematics synthetic judgment on the segmentation, it can overcome the inaccuracy and haphazardry which caused by the human factor, and solved problems which the boundary marker of the factor and the influence among the factors was more difficult to measure. Through the geological engineering condition analyzing of the near-dam reservoir bank, the bank of segmentation is high and steep, and mostly is rock slope, with the fuzzy mathematics synthetic judgment, we get the segmentation of the near-dam reservoir bank segmentation. It shows that the segmentation is in conformity with the field investigation and the remote sensing interpretation.
出处
《中国煤炭地质》
2009年第4期52-54,66,共4页
Coal Geology of China
关键词
影响因素
权重
隶属度
稳定性
模糊数学综合评判
电站近坝库岸
fuzzy mathematics synthetic judgment
stability of reservoir bank segmentation
membership degree
