Multidimensional evaluation method for slope excavation quality based on roughness index
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Abstract:
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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