起源于荷兰，其时为了使地上不再下沉，所以荷兰人制作了一种宽100毫米、长200毫米、50或60毫米厚的小型路面砖铺设在街路途面上，并在砖与砖之间预留了大约2毫米的缝隙。 Permeable bricks originated in the Netherlands. At that time, in order to prevent the ground from sinking, the Dutch made a small pavement tile with a width of 100 mm, a length of 200 mm, and a thickness of 50 or 60 mm. A gap of about 2 mm is reserved between the brick and the brick. In this way, the rain will benefit the rain, and the rain will enter the ground from the gap between the bricks. This was later known as Dutch brick.
After that, the American company Shubuluoco invented a pavement brick with a strong water absorption function. When the brick is filled with water, the water will drain to the ground. However, the drainage rate of this kind of brick is very slow. In the rainy weather, this kind of brick can hardly help. This kind of brick is also called as Shubuluoco pavement brick.
In the 1990s, there appeared Shubrocco bricks in our country. Based on the principle of the Shubuloco brick, the technicians of the Beijing municipal government invented a pavement brick that is covered with permeable holes and has good water permeability. Rainwater will flow from the small holes in the brick to the ground.
In order to strengthen the compressive and flexural strength of the brick body, technicians use crushed stone as a material to participate in cement and adhesive admixtures so that their water permeability and strength can meet the needs of urban roads. This type of brick is a permeable brick used on municipal roads, and the price is relatively cheap. Ceramic permeable bricks fired with ceramics are relatively cheap. You can see the pavement paved with permeable bricks in Beijing's Chegongzhuang, Gongzhufen, Shijingshan and other places.
So what are the factors for building a sponge city? The sponge city is the first choice of six major measures of infiltration, stagnation, storage, net, use, and drainage, which can absorb and use 70% of the rainfall on the spot. Today, let's talk about the "lag" of important factors in the construction of sponge cities.Approach 1: The construction of rainwater wetlands uses the principle of species symbiosis, material recycling and regeneration in the ecosystem, and the principle of harmonious structure and function to purify the rainwater collected in rainwater gardens and ecological retention ponds. And it has the characteristics of large buffer capacity, good processing effect, simple process, low capital investment, and low operating cost, which is extremely suitable for more applications in the construction of sponge cities.