Foundation pit waterproof curtain with good impermeability

The utility model discloses a foundation pit waterproof curtain with good impermeability, which relates to the technical field of constructional engineering and comprises a concrete pile. The multiple concrete piles are erected around the foundation pit, a concrete wall is arranged on the sides, facing the interior of the foundation pit, of the concrete piles, the surface of the concrete wall is coated with a waterproof layer, and a concrete grout layer is arranged on the surface of the waterproof layer. Woven meshes are arranged on the two sides of the waterproof layer, and the woven meshes located between the waterproof layer and the concrete wall are fixed to the concrete wall in an adhering mode. The foundation pit side wall waterproof structure is reasonable in structure, reinforcing and water stopping are conducted on the side wall of a foundation pit through the curtain composed of the concrete piles and the concrete wall, the permeation resistance of the curtain is improved through the waterproof laye