Method for calculating irregular earth volume in engineering survey
An engineering measurement, irregular technology, applied in the direction of calculation, design optimization/simulation, special data processing application, etc., can solve the problem that the analysis of the results is not intuitive enough, can not see the current situation and the completed surface shape comparison and fill and cut analysis and other problems
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Embodiment 1
[0051] The present embodiment is a method for irregular earthwork calculation in engineering survey, comprising the following steps:
[0052] (1) Collect points according to the topography of the construction site, and all collection points cover the entire construction site along the boundary of the terrain.
[0053] The collection points are carried out by a total station or GPS, and each point distributes and stores X, Y, and Z coordinates, which correspond to north coordinates, east coordinates, and elevations respectively; collection points are generally collected every 5 to 10 meters according to terrain changes; On flat ground and with small slope changes, the distribution of collection points can be relatively sparse; on the ground with complex terrain and rapid changes in terrain, the distribution of collection points should be relatively dense.
[0054] This collection method can change the density and location of collection points with the complexity of terrain chan...
Embodiment 2
[0065] The difference between this embodiment and Embodiment 1 is that in step (2), during the extension process of the triangle, if there is a ground line in the construction site, the ground line must become a side of a certain triangle.
[0066] Through the above technical solutions, the ground line refers to the feature line that can fully express the shape of the terrain, and the ground line should not pass through any triangle, otherwise the triangle will "enter" or "suspend" on the ground, which does not match the actual terrain; The ground line coincides with one edge of a certain triangle, which can better express the terrain features.
[0067] like figure 2 As shown, P 1 P 2 The connected straight line is the ground line, and A, B, C, and D are four triangles. The ground line passes through the triangles, causing the surface composed of the four triangles to be inconsistent with the actual terrain, so adjustments are required.
[0068] like image 3 As shown in ...
Embodiment 3
[0070] The difference between this embodiment and Embodiment 1 is that in step (2), during the extension process of the triangle, if there is a specific facility that cannot be dismantled in the construction site, a characteristic line is drawn on the edge of the specific facility, and according to the processing site Adjust the triangles by the linear method and remove all the triangles inside the breakline.
[0071] If there are some buildings or natural landscapes that cannot be dismantled on the construction site, the triangle must bypass this part of the facilities and form a blank in the area formed by the feature lines to avoid destroying the facilities during construction. like Figure 4 As shown in , the empty area in the center of the triangular surface is the facility that cannot be destroyed.
[0072] Generally, the "perpendicular line method" is used to judge whether the center of gravity of the triangle is located in the area of the feature line. If so, the tr...
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