Goaf interval filling parameter determination method based on high-water material

The invention discloses a goaf interval filling parameter determination method based on a high-water material, which comprises the following steps: firstly, calculating the height of a pressure arch generated by mining of a current coal seam, and dividing into two conditions according to the position of the arch crown of the pressure arch; secondly, selecting a plurality of primary selection schemes in each condition by adopting specific data and a screening method; the method comprises the following steps: selecting a plurality of primary selection schemes, screening out a plurality of high-water materials with different water-cement ratios as primary selection water-cement ratios, matching each primary selection scheme with each primary selection water-cement ratio, selecting a primary selection water-cement ratio suitable for each primary selection scheme, and calculating the filling cost of each primary selection scheme for filling 1m; respectively selecting a water-cement ratio applicable to the primary