一、问题的提出 火力发电厂一般设置灰场贮存燃煤后产生的灰渣,灰场的灰坝多为当地材料坝。灰坝一般作成透水坝,以加速灰渣中水分的排除,减少孔隙水压力,促进灰渣的固结。为此,必顶设置反滤层,挡住灰渣,排除灰水。反滤层过去一般为中粗砂、细石、小石、中石等几层,这种反滤层的施工较为麻 First, the issue put forward Thermal power plants are generally set ash storage ash generated after the ash, mostly gray ash dam for the local material dam. Ash dam generally made of permeable dam to accelerate the exclusion of moisture in the ash to reduce the pore water pressure and promote the consolidation of ash. To this end, will set the top anti-filtration layer, blocking ash, remove gray water. Antifiltration layer in the past is generally coarse sand, fine stone, stone, stone and other layers, the construction of this filter layer is more Ma