Deep foundation pit drainage system

Abstract

The invention relates to a deep foundation pit drainage system and belongs to the technical field of building construction. The deep foundation pit drainage system comprises a foundation pit body; drainage shafts are arranged at four corners of the foundation pit body; water pumps are arranged in the drainage shafts; a supporting plate abutting against peripheral side walls of the foundation pit body is arranged in the foundation pit body; the supporting plate is provided with a plurality of drainage pipes which penetrate through the supporting plate and are fixedly connected to the supportingplate; the ends, in the side walls of the foundation pit body, of the drainage pipes are sealed, the ends, away from the sealed ends, of the drainage pipes are open ends, and the drainage pipes are provided with a plurality of drainage holes in the length direction of the drainage pipes; a plate body parallel to the supporting plate is further arranged in the foundation pit body and spaced from the supporting plate; a fixing plate is arranged at the position, where the plate body is in contact with the bottom wall of the foundation pit body, of the plate body, and the fixing plate is perpendicular to the plate body; the supporting plate is connected to the fixing plate; and the two ends of the fixing plate communicate with the drainage shafts. Seepage water is drained through the drainagepipes and sponge strips, and the situation that the side walls of the foundation pit body bear pressure to cause collapse is prevented.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a deep foundation pit drainage system. Background technique [0002] Foundation pit engineering mainly includes the design and construction of foundation pit support system and earthwork excavation, which is a highly comprehensive system engineering. It requires close collaboration between geotechnical and structural engineering technicians. The foundation pit support system is a temporary structure and is no longer needed after the completion of the underground construction. Deep foundation pit engineering refers to the earthwork excavation, support, and dewatering engineering of foundation pits (troughs) whose excavation depth exceeds 5m (including 5m), or the excavation depth does not exceed 5m, but the geological conditions, surrounding environment and underground pipelines Earthwork excavation, support, and dewatering engineering of foundation pits (troughs) ...

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent whose authorized notification number is CN207062965U discloses a foundation pit drainage system, which includes a water tank around the foundation pit, a drainage ditch arranged in the foundation pit, and the drainage ditch includes a dry ditch and a branch ditch connected to the dry ditch. Pass through the construction area in the foundation pit and connect to the water collection well outside the construction area. The bottom plane of the water collection well is lower than the plane where the bottom of the dry ditch is located. The equipment and the water tank are connected to the external drainage system. This patent can effectively drain the accumulated water in the foundation pit during the construction project, especially the drainage efficiency of the accumulated water in the foundation pit is high, and it has the advantages of simple structure, stability and reliability. ; but its shortcoming is that when it rains, the rainwater will infiltrate into the side wall of the foundation pit, so that the side wall of the foundation pit bears a large pressure and causes the side wall of the foundation pit to collapse

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