Road base building block of permeating water with through structure in center

The utility model relates to a road base building block of permeating water with through structure in center, its characterized in that: prefabricated base block central point puts as the hole of lining up from top to bottom, arranges the hydrocolloid main part and arranges downthehole at prefabricated base block center, and both mutual independence arrange to arrange in the hydrocolloid main part to have and go up the wash port of describing to the plum blossom of lining up down, and the aperture of its wash port is 0.1 cm - 0.5cm, prefabricated base block needs to reserve the through hole that the diameter is 10cm in its center department in process of production, as row hydrocolloid's arrangement space. It will prefabricate the road base that assembled road base changes the porous into, can emit into the rainwater collection system below the basic unit through drainage device with the ponding between surface course and basic unit, can effectually prevent because the surface course that ponding leads to dam