Novel comprehensive dewatering and drainage method and drainage device for mudstone metro station

Abstract

The invention belongs to the technical field of dewatering and drainage, and discloses a novel comprehensive dewatering and drainage method and drainage device for a mudstone metro station. The dewatering problem is solved by adopting a base open drainage method after well-point dewatering and drainage from the side wall of a foundation pit to a bottom plate. A station firstly adopts the well-point dewatering, the foundation pit is excavated to be below mudstone, and drainage is conducted to be below the bottom plate by adopting blind pipes; the blind pipes are buried in blind ditches with the size of 500 * 500 mm arranged on the periphery of the base, water flow led out from the side wall is drained into a water collecting pit, the phenomena that the mudstone of the foundation pit is soaked by water and water is accumulated in the foundation pit are avoided, and therefore effective dewatering and drainage effect is achieved. According to the novel comprehensive dewatering and drainage method and drainage device for the mudstone metro station, the dewatering problem is solved by adopting the base open drainage method after well-point dewatering and drainage from the side wall of the foundation pit to the bottom plate, the phenomena that the mudstone of the foundation pit is soaked by the water and the water is accumulated in the foundation pit can be avoided, and therefore the effective dewatering and drainage effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of drainage and drainage, and in particular relates to a novel method for comprehensive drainage and drainage of mudstone subway stations and a drainage device. Background technique [0002] At present, whether the mudstone precipitation in the foundation pit of the station is successful or not will be related to the progress of the entire project, the follow-up process construction, cost control, and also the life and safety of the construction personnel. The important factor of success or failure is an important and difficult construction link in the construction of deep foundation underground buildings; if the foundation pit fails to dewater, it may cause slow construction progress, affect the project duration, increase project investment, and cause The foundation pit was scrapped, and even casualties. Therefore, the foundation pit dewatering should be highly valued, and foundation pit dewatering is an i...

AI Technical Summary

Problems solved by technology

[0005] The station uses wells outside the pit to dewater. Due to the impermeable mudstone and the presence of fissure water, the precipitation is insufficient, causing groundwater to flow down the side wall of the foundation pit, resulting in serious water accumulation in the basement

Images