...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Geotechnica Slovenica >A STABILITY ASSESSMENT OF COASTAL CLIFFS USING DIGITAL IMAGERY
【24h】

A STABILITY ASSESSMENT OF COASTAL CLIFFS USING DIGITAL IMAGERY

机译：利用数字图像对海岸峭壁进行稳定性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The investigated area around the Stara Baska settlement (the island of Krk, NE channel part of the Adriatic Sea) is in a delicate geodynamic balance. Marine erosion is quite prominent and the recorded cliff retreat between 1966 and 2004 was from 4 to 5 metres. The cliff slopes are formed in talus breccias. Strong waves and formations of wave-cut notches are the main causes of the cliff's instability. The secondary causes are the weathering and erosion of the soil and rocks on the cliff The slump of the cliff slope can occur in a rock mass with higher strength parameters, where the notches are cut a few metres inward into the toe of the cliff slope. A combined method for the stability analysis of the coastal cliffs was tested; this incorporates the cantilever-beam model and the structure-from-motion (SfM) photogrammetry. This method can provide highly detailed 3D geometrical data of the cliff, which can then be used in the calculations of the stability model. This is particularly important in a stability analysis of lithologically heterogeneous rocks such as breccias with varied geometry, which cannot be easily replaced by a rectangular surface. The simple and useful SfM method overcomes the limitations of traditional surveys in estimating the cliff overhang surface and the notch length.
机译：Stara Baska定居点（克尔克岛，亚得里亚海的NE通道部分）周围的被调查区域处于微妙的地球动力学平衡中。海洋侵蚀十分突出，1966年至2004年间记录的悬崖撤退为4至5米。悬崖斜坡形成于距骨角砾岩中。强烈的波浪和切波缺口的形成是悬崖不稳定的主要原因。次要原因是悬崖上的土壤和岩石的风化和侵蚀。悬崖坡的坍塌可能发生在强度参数较高的岩体中，在缺口处向悬崖坡口内切开了几米。测试了一种用于沿海悬崖稳定性分析的组合方法;它包含了悬臂梁模型和运动结构（SfM）摄影测量法。此方法可以提供高度详细的悬崖3D几何数据，然后可以将其用于稳定性模型的计算。这在对几何形状不均的岩石（如角砾岩）的稳定性分析中特别重要，这些岩石不易被矩形表面替代。简单实用的SfM方法克服了传统勘测在估算悬崖悬垂面和缺口长度方面的局限性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号