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对于结构面多而复杂的岩质边坡,其优势结构面的选取与分析是极其重要的工作。传统的结构面组数划分方法比较粗糙,分析结果有很大的主观因素,无法准确的给出结构面的优势产状,使得其结果在实际工程中使用不便。以结构面交线的筛选和分析为突入点,借助于赤平极射投影法,在楔形体滑移分析中首先确定可能的滑移区域,筛选出可能滑移的结构面交线,缩小计算范围,采用K-means聚类算法和有效性检验,根据赤平极射投影分析得到滑移区域的对称轴中心作为初始凝聚点,通过多次迭代计算得到滑移区域内的优势结构面交线。将该方法用于重庆万盛黑山谷的岩质滑坡中,结果表明,将赤平极射投影与K-means聚类算法相结合,计算得到的优势结构面交线分类合理,结果可靠,可以准确地确定结构面交线的优势产状。
For the multi-complex and complex rock slope, the selection and analysis of the dominant structure surface is of great importance. The traditional method for dividing the number of structural faces is relatively rough, and the analysis results have a lot of subjective factors. Therefore, the dominant shape of the structural plane can not be given accurately and the result is inconvenient to use in actual engineering. With the selection and analysis of the intersecting lines of structure as the starting point, the possible slippage area is first determined in the wedge slip analysis by means of the red-level polar projection projection method, and the possible slip line intersections are screened to narrow the calculation range , The K-means clustering algorithm and validity test were used. According to the analysis of the dipole projection, the center of symmetry of the slip region was obtained as the initial condensing point, and the intersection of the dominant structure planes in the slip region was obtained through multiple iterations. The method is applied to the rock mass landslides in the Black Valley of Wansheng in Chongqing. The results show that the combination of the red-plane projection and the K-means clustering algorithm is reasonable and the results are reliable and accurate To determine the structure of the line of intersection of the dominant shape.