基于粗糙度的边坡开挖质量多维评价方法
Multidimensional evaluation method for slope excavation quality based on roughness index
  
DOI:
中文关键词:  粗糙度  边坡开挖  质量评价  三维激光扫描  点云
英文关键词:roughness  slope excavation  quality assessment  three-dimensional laser scan  point cloud
基金项目:国家自然科学基金(51379109); 三峡大学青年科学基金(KJ2015A001)
作者单位
胡 超1,赵春菊1,周宜红1,潘志国2 1. 三峡大学 水利与环境学院湖北 宜昌 4430002.河海大学 水利水电学院南京 210098 
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中文摘要:
      边坡开挖与质量评价是水利工程建设中的关键环节,如何高效、全面、直观地对开挖工程质量进行评价是工程建设各方关注的问题。针对水利工程边坡开挖过程中数据采集、处理效率低及指标不完整的问题,本文结合规范中的质量评价指标,利用设计基准数据及三维激光扫描获取的开挖面点云数据,引入粗糙度的概念分别构建一维断面线比值、二维开挖面测点超欠挖值及方差、三维表面投影比等多维度的质量评价指标,同时开发了边坡质量评价系统,以对开挖边坡进行综合评价。最后,通过对某工程实例分析表明,上述多维度的指标能够全面直观地反映开挖质量情况,通过评价系统能为边坡开挖现场质量评价与控制提供实时、全面的信息支撑。
英文摘要:
      Slope excavation and quality evaluation is the key process in hydraulic engineering. How to evaluate the quality of the excavation work efficiently, comprehensively, and directly is the concern of engineering construction. This research was intended to tackle the problems of inefficient data acquisition and processing and incomplete indicators in the process of slope excavation. We adopted the quality evaluation indicators in technical specifications, utilized the reference design data and the excavated surface point cloud data obtained by 3D laser scanning, and introduced the roughness concept. With these, we established multidimensional quality evaluation indicators including the one-dimensional section line ratio, the two-dimensional variance of over-under-excavation value, and the three-dimensional surface projection ratio. Meanwhile, we developed a quality evaluation system for slope excavation. A case study showed that the above-mentioned multidimensional indicators could comprehensively and directly reflect the excavation quality and provide real-time and comprehensive information support for the quality evaluation and control of slope excavation on site.
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