基于粗糙度的边坡开挖质量多维评价方法

发布时间：2018-06-29 12:31

本文选题：粗糙度 + 边坡开挖　；参考：《南水北调与水利科技》2017年06期

【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,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。
[Abstract]:Slope excavation and quality evaluation is a key link in the construction of water conservancy projects. How to evaluate the quality of excavation projects efficiently, comprehensively and intuitively is a problem concerned by all parties. In view of the problems of low efficiency and incomplete index in the process of slope excavation in hydraulic engineering, combined with the quality evaluation index in the specification, the data of excavated surface point cloud obtained by using the design datum data and 3D laser scanning are used. The concept of roughness is introduced to construct the multi-dimensional quality evaluation indexes, such as one-dimensional cross-section line ratio, 2-D excavating surface measurement point over-undercut value and variance, three-dimensional surface projection ratio, and so on. At the same time, a slope quality evaluation system is developed. A comprehensive evaluation of the excavated slope is carried out. Finally, through the analysis of an engineering example, it is shown that the above multi-dimensional indexes can reflect the excavation quality completely and intuitively, and the evaluation system can provide real-time and comprehensive information support for the field quality evaluation and control of slope excavation.
【作者单位】：三峡大学水利与环境学院;水电水利规划设计总院;河海大学水利水电学院;
【基金】：国家自然科学基金(51379109) 三峡大学青年科学基金(KJ2015A001)~~
【分类号】：TV551.4

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