为了提高用作局部控制下沉的风力充填材料强度性能,在采用废矸石支撑的基础上,对煤灰、膨润土和硅酸盐水泥等胶结性添加剂试验了它们的效果。由此发现,在一定的浓度范围内,三种添加剂均可使充填混合物的最终强度得到不同的增大。其中,硅酸盐水泥增加的百分比最大。当采用风力充填时,选择恰当的充填混合物,将取得最经济的和最有效的控制沉陷。 In order to improve the strength performance of the wind-stuffing materials used for subsidence control, their effects were tested on cement additives such as coal ash, bentonite and Portland cement using the waste rock support. It was found that the three additives all increased the final strength of the filling mixture to varying degrees over a range of concentrations. Among them, Portland cement increased the largest percentage. When using wind-based filling, choosing the right filling compound will result in the most economical and effective control of the subsidence.