Earth and rockfill dam complex borrow pit excavation volume calculation method based on grid subdivision algorithm
A grid subdivision and calculation method technology, applied in the field of earth-rock dam construction, can solve problems such as uneven mining surface and bottom surface, heavy post-processing workload, encrypted measurement section, etc., to shorten calculation time, improve calculation accuracy, high efficiency effect
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[0108] Take the calculation of the excavated earth volume of a soil material yard of a hydropower project in Southwest China as an example:
[0109] The stockyard is located about 36km upstream of the dam site, the distribution elevation of the stockyard is 2740-2865m, and the tug-of-war height at the front edge of the stockyard is about 85m. Cultivated land and residential buildings are distributed in the stockyard, which belongs to the reservoir submerged area. The total area of its partitions is about 19.5m 2 , the total volume of survey and design is about 6.81 million m 3 . as attached Figure 7 Shown is the 3D model in the stockyard area established by reverse modeling using point cloud data based on the original terrain contours. The basic principle is that the point cloud obtained by the 3D laser scanner is reversely generated by the regular triangular mesh generation algorithm to generate the triangular network of the excavation surface, and then the 3D model is...
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