Engineering waste slag position determination method

The invention provides a method for determining the position of engineering waste slag. The method comprises the following steps: S1, determining the initial boundary of a waste slag field; s2, along the preliminary boundary of the waste slag field, extracting an original terrain DEM and recording the original terrain DEM as DEM1; s3, referring to the boundary surface elevation of the waste slag field, simulating filling and leveling channels for the original elevations on the two sides of the slag field, constructing simulated accumulation slopes which are uniformly distributed from the upper part to the lower part of the slag field, and along the simulated accumulation slopes, extracting a terrain DEM after simulated slag accumulation and recording the terrain DEM as DEM2; s4, selecting an original terrain DEM1 and a terrain DEM2 after slag discarding by using a grid calculator tool, calculating an elevation difference before and after accumulation, and multiplying the elevation difference by a grid area to