Earth and rockfill dam complex borrow pit excavation volume calculation method based on grid subdivision algorithm

Abstract

An earth and rockfill dam complex borrow pit excavation volume calculation method based on a grid subdivision algorithm comprises the following steps that three-dimensional point cloud data of a borrow pit excavation face are scanned, registration of point clouds of different scanning batches is achieved through a point cloud registration algorithm, so that point clouds which are originally and irregularly distributed on the excavation face are obtained; the obtained original irregularly distributed point cloud is processed through a Doo-Sabin subdivision algorithm, and the point cloud forms a relatively regular excavation surface; then, Kriging interpolation calculation is performed to obtain a spatial point cloud participating in excavation volume calculation; a grid subdivision algorithm is compiled through MATLAB, and calculation of the excavation volume is achieved. According to the earth and rockfill dam complex borrow pit excavation volume calculation method based on the grid subdivision algorithm, the borrow pit excavation volume can be rapidly estimated, and the method has the advantages of being small in workload, relatively safe in measurement and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of earth-rock dam construction, and in particular relates to a method for calculating the excavation volume of a complex earth material field of an earth-rock dam based on a grid subdivision algorithm. Background technique [0002] In recent years, core rockfill dams have been widely used in my country due to their foundation adaptability, local materials and many other advantages. Especially in the southwest of my country, the number of core rockfill dams is more than Many, besides the Nuozhadu, Changheba and other projects that have been completed, projects such as Lianghekou and Shuangjiangkou are also under construction. The filling of core wall dams has high requirements for soil materials, and the demand is huge, and often needs to be mined from multiple stockyards. Under normal circumstances, the shape of the soil material field is different, and the shape of the mining surface and the bottom surface ...

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

Images