UNDERGROUND DRAINAGE BLOCK, SIDE UNDERGROUND DRAINAGE, UNDERGROUND DRAINAGE FILTERING SYSTEM, METHOD FOR THE PREPARATION OF A SIDE UNDERGROUND DRAINAGE AND METHOD FOR VALIDATING A UNIFERRIDENTIAL WATER DISTRIBUTION

摘要

the present invention relates to an underground drainage block for filtering water that includes a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define an internal chamber. the bottom wall contains a plurality of holes that allow liquid and solid materials to enter and exit the inner chamber. an underground drainage filtration system can be formed by attaching a lateral underground drainage, which is formed from one or a plurality of underground drainage blocks, to a floor of the filter. also included is a method of preparing a side underground drain to provide a uniform distribution of backwash water over a side underground drain and a method of validating the uniform distribution of backwash water through a side underground drain.