A pavement brick with water cut off first and then permeable and preparation method thereof

Abstract

The invention discloses a pavement brick capable of cutting off water at first and then permeating water and a preparation method thereof. The pavement brick comprises a water-storage brick-in porous solid body, a five-side dense impermeable enclosure structure and thorough pipes, wherein the thorough pipe is previously embedded into the water-storage brick-in porous solid body, and the five-side dense impermeable enclosure structure is arranged outside the brick-in porous solid body. Rainwater and surface runoff can enter the brick from the top and are previously stored in the brick-in porous solid body, namely, the pavement brick has a water cutting off function. A plurality of thorough pipes are embedded in the pavement brick from a certain depth to the bottom, pipe walls of the through pipes are impermeable, and a permeable material is arranged in the thorough pipes; when a water level in the brick-in porous solid body exceeds heights of the upper ends of the thorough pipes, water can flow into a base layer and a lower soil layer from insides of the thorough pipes, namely the pavement brick has a permeable function. The water cutting off function of the pavement brick can reduce urban surface runoff and reduce urban inland inundation, and meanwhile moisture cut off in the pavement brick can be evaporated in hot days, reduce road surface sensible heat loss and relieve an urban heat island effect.

Description

Technical field [0001] The invention relates to the technical fields of sponge city, urban drainage, urban heat island, etc., in particular to a paving brick that first cuts water and then is permeable and a preparation method thereof. Background technique [0002] In the process of urbanization, soil layers and lawns that can store water and are permeable are eradicated. Instead, hard impervious materials such as roofs, asphalt, concrete slabs or cement bricks are used, resulting in rainwater that cannot be effectively stored in the surface soil and cannot penetrate into the ground, increasing surface runoff. Ground runoff and rainwater can only be discharged into nearby rivers, pools, etc. through dotted ditches, drainage pipes, and rainwater pipes. During heavy rainfall, the river water rises and the groundwater level rises, and the urban underground water system and drainage ditches cannot promptly drain the ground runoff formed by the heavy rainfall, resulting in urban floo...

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a pavement brick that first cuts off water and then permeates water and its preparation method, which can solve the problem of urban waterlogging and reduce the urban heat island effect

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