Calculation Method of Excavation Quantity of Complex Soil Field of Earth-rock Dam Based on Grid Subdivision Algorithm

Abstract

The calculation method of the excavation volume of the complex soil material field of the earth-rock dam based on the grid subdivision algorithm includes the following steps: scanning the 3D point cloud data of the excavation surface of the soil material field, and realizing the point cloud data of different scanning batches through the point cloud registration algorithm. Cloud registration, in order to obtain the point cloud of the original irregular distribution of the excavation surface. The original irregularly distributed point cloud processed by the Doo-Sabin subdivision algorithm makes it form a relatively regular excavation surface; then, the Kriging interpolation calculation is performed to obtain the spatial point cloud involved in the calculation of the excavation volume. The grid subdivision algorithm is written by MATLAB to realize the calculation of excavation volume. The method for calculating the excavation volume of the complex soil material field of the earth-rock dam based on the grid subdivision algorithm of the present invention can quickly estimate the excavation volume of the earth material field, and the method has the advantages of small workload, relatively safe measurement and high efficiency.

Description

Calculation method of excavation volume for complex earth material field of earth-rock dam based on mesh subdivision algorithm technical field The invention belongs to the technical field of earth-rock dam construction, in particular to a kind of complex earth-rock dam based on grid subdivision algorithm Calculation method for excavation volume of soil material yard. Background technique In recent years, core rockfill dams have been widely used in my country due to their basic adaptability and many advantages such as being able to obtain materials in situ. It is widely used, especially in the southwest region of my country, among the extra-high dams with an altitude of more than 200m, there are a large number of core rockfill dams. In addition to the completed Nuozhadu and Changheba projects, Lianghekou and Shuangjiangkou projects are also under construction. Soil requirements for core wall dam filling The demand is high and the demand is huge, and it often needs to...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the shape of the soil material field is different, and the shape of the mining surface and the bottom surface is extremely uneven. The traditional earthwork measurement method is mainly obtained by measuring the area of ​​several typical sections, and then multiplying the section spacing to accumulate. This method requires To measure the data of multiple sections, for sections with complex excavation shapes, it is necessary to encrypt the measurement sections, the workload of post-processing is relatively large, and there are often certain errors due to the influence of section selection; for stockyards excavated by steps , the steps are relatively high, and there are still certain difficulties and dangers in the traditional measurement method

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