The important role of storage and drainage board in greening engineering

Storage and drainage board (HDPE) or polypropylene (PP) by heating and pressurizing shaped, a kind of light plate can not only create a drainage channel with a certain three-dimensional space support stiffness, but also water storage.

The plate itself has two comprehensive functions of water storage and drainage. The plate has the characteristics of high spatial stiffness, and the compression resistance is obviously better than that of similar products (which can pass the field test). It can withstand the high compressive load of more than 400Kpa, and also can withstand the mechanical rolling load in the backfilling process of planting roof.

It has the functions of drainage in the construction layer, water seepage in the soil discharge, water seepage in the storage part, etc. Compared with the previous generation of drainage products, it has the following advantages and disadvantages:

1. There is drought and little rain in the north, so the storage and drainage plates can hold water, which is conducive to the growth of vegetation;

2. The convex point side wall of the storage drainage board is thicker, so the compressive strength of the storage drainage board is larger, which can reach more than 40T, which is far larger than the plastic protrusion plate (high-density polyethylene drainage board, high impact polystyrene drainage board), plastic drainage mat and other similar products (can be actually rolled experiments), and can meet the requirements of the construction and normal operation of the backfill;

3. The support surface of the storage and drainage board is relatively large, which will neither block the drainage channel due to the overlying non-woven fabric nor block the drainage channel due to the soil entering due to the insufficient tearing of the non-woven fabric. The storage and drainage board can completely retain the drainage space. Avoid the plastic convex sheet due to non-woven fabric sinking caused by poor drainage, will not cause vegetation wilt, death due to poor drainage.