연약지반용 수평배수재로의 원활한 혼합석탄재 활용시스템을 정립하기 위한 시공적 고찰

In this study, we would develop the constructional system, that horizontal drain layer on soft ground is made of many mixed coal ash abandoned to ash pond of thermal power plants to be substituted for many sand. The design for horizontal drain layer on soft ground is started from the decision that the material could be used or not, by verifying material condition according to the weight percent of the dry soil retained on #200 sieve in permeability of horizontal drain material. In next step of the design, we estimate the thickness of horizontal drain layer to confirm trafficability of heavy machinery in construction. And by checking the functionality for permeability of horizontal drain layer, we decide the thickness of horizontal drain layer and the plan of horizontal drainage(for example, horizontal porous pipe, etc.) in, successively. In practical construction of horizontal drain layer, without fine particles we should sort out and recycle mixed coal ash abandoned to ash pond. But for a diverse utilization of fine particles of mixed coal ash to be sorted out, research and develop should be carried out, as it is result that this sorting is to by-produce another waste in a viewpoint of the waste recycling.