What kinds of schemes are there for underground waterproof engineering?

(1) Self-waterproofing of structures, that is, waterproofing depends on the impermeability and compactness of waterproof concrete drawings, such as basements, groundwater pump houses, pools and underground passages. The building structure is both a load-bearing maintenance structure and a waterproof layer. Therefore, structural self-waterproofing has been widely used in engineering because of its advantages of simple construction, short construction period, improving working conditions and saving engineering cost. (2) Add waterproof layer, that is, add waterproof layer on the outside of the structure to prevent water. Commonly used waterproof layers include cement mortar, coiled material, waterproof coating, asphalt binder and metal waterproof layer, which can be applied to different engineering objects, waterproof requirements and construction conditions. (3) Seepage and drainage waterproofing, that is, using blind ditch, seepage and drainage layer and other measures to exclude nearby water sources for waterproofing.