摘要
斜坡中通常发育有多种裂面 ,这些裂面能否在滑坡发育过程中形成滑面 ,将取决于裂面所处的应力状态、裂面的性质、形态、发育密集程度等因素。裂面聚类分析就是通过对裂面所处应力状态的分析 ,确定斜坡中存在的多组潜在滑面 ,然后对斜坡中多组裂面进行聚类分析。其基本方法是将所研究的一组样本 (裂隙或潜在滑面 )中的每一个样本看成一类 ,根据样品间相似系数或距离的大小 ,每次将最为相近的合并 ,计算合并后新类与其他类之间的距离 ,再选择最小距离合并 ,最后将一组样本合并成所需要的类 ,确定斜坡中最有可能发育成滑动面的裂面 (或变形带 )
There often exist several kinds of split planes in a slope. Could these planes delevop into sliding surface, it depends on several factors, for example, stress state, properties, shape and development density of the split planes, and so on. Through analysing these slide planes, stress,state, and cluster analysis, we determine several groups of the latent slide planes, then we classify and analyse these groups of split planes in slope. The primary method is that each sample of each group (split planes or latent slide planes) is regarded as one kind. According to distance or similar coefficient between the samples, we merge two kinds, which are more similar, into one kind, and calculate the distance of new kind to other kinds, and so on, finally, merge into a kind which we need, and determine one kind of split plane which may possibly develope into active sliding surface.
出处
《工程地质学报》
CSCD
2000年第2期224-228,共5页
Journal of Engineering Geology
关键词
裂面
潜在滑面
聚类分析
滑坡
Split plane, Latent slide plane, Cluster analysis.
