"Underground space, especially urban underground space, is an effective way to solve many urban problems and is the future development direction." Yan Jinxiu, president of the International Tunneling and Underground Space Association, commented on human exploration of the underground world.

No. 1 ｜ Ancient people's underground space utilization

In fact, since ancient times, people have never stopped exploring and trying the "underground city".

Living may be the earliest way for human beings to use underground space. About 500000 years ago, Peking Ape Man had used caves to hide and preserve kindling.

Up to now, horizontal cave dwellings are still used, which are known as cave dwellings. They are distributed in Shaanxi, Gansu and Ningxia regions of China, and there are still more than 40 million people living in cave dwellings.

Underground space also has a wide range of production and living purposes. The ancients had long realized that the sealing performance of the underground kept the temperature and humidity relatively stable, and improved the storage time of food, etc.

The ancient city of Luoyang once found an underground warehouse for grain storage in the Sui and Tang Dynasties - Hanjia Warehouse. Because of its thermal stability, airtightness and the safety of underground buildings, it became a model of official storage.

Underground space is the key position of war. The deep underground space contains huge environmental capacity and energy resources, and is a natural battleground.

In the Warring States Period in the 6th century BC, there had been tunnel warfare and anti tunnel warfare. For example, the "nine refusals and nine attacks" tunnel warfare and anti tunnel warfare exercises conducted by the Public Transmission Group and Mozi are famous examples.

NO. 2 ｜ Modern underground space utilization

In 1863, the first subway in the world was built in London, England, which started the era of large-scale urban development and utilization of underground space.

Over the next century, underground street crossings, underground parking garages, underground traffic expressways, underground shopping malls, underground building complexes, large-scale underground water supply, sewage discharge, garbage disposal, energy supply systems, and integrated pipeline corridors have sprung up all over the world.

It is inevitable for the development of modern cities to demand space, land and resources from the underground.

In addition to the subway and utility tunnel that are inevitable in urban development, private basements are also common. If the disadvantage of damp and mildew prone underground space is solved, the basement is undoubtedly a good private place.

With the continuous exploration and utilization of underground space, science and technology are also constantly innovating. In order to solve the problem of damp, seepage and mildew in underground space, it was bred with the strong electroosmotic pulse impermeable dehumidification system, overturning the passive traditional waterproof and adopting active waterproof.

The positive pole is installed in the structure, and the negative pole is installed in the outdoor soil layer. The electroosmotic pulse charge is applied to make the positive water molecules actively move towards the outdoor negative pole, effectively ensuring the dryness and comfort of the basement.

We focus on accurate long-term design:

No longer blindly pursuing the cool luxury of "big" venues, start again with people as the center, and pay more attention to make you more worry free.

Establish a self drying system for the main structure of the house to create a more comfortable and livable indoor and underground space.

There is no doubt about the greatness of a technology being invented, but the enthusiasm for fighting for this point is still weak.

It is not loud enough to argue that fear will make a noise and push it to the thorny land.

When the spotlight is focused, it starts to increase the probability of "being accepted"