A floating prevention device for underground space construction

Abstract

The invention discloses a floating prevention device for underground space construction, comprising a drain pipe, a water stop ring is fixed on the outside of the drain pipe, a metal leaking net for holding pebbles is fixed on the outside of the bottom of the drain pipe, and the bottom of the drain pipe There are water filter holes, and the invention adopts extremely small construction investment cost, and the groundwater in the soil is drawn out and discharged through the pre-buried drain pipe, which solves the anti-floating of the basement during the construction process that is not considered in the design, and is beneficial to the early closure of the basement post-casting belt Construction, to speed up the overall construction progress, in the discharge of groundwater, the installation of the outer pipe and the adjustment of the inner pipe are used to coordinate with each other axially, so that while the groundwater is drawn out, the pebbles in the metal leaking net can also be discharged through the stone discharge component to avoid More impurities in the soil will cause clogging and affect the drainage efficiency.

Description

technical field [0001] The invention relates to the technical field of basement construction, in particular to a floating prevention device for underground space construction. Background technique [0002] With the expansion of cities, the acceleration of urbanization, and the scarcity of land resources, underground space is constantly being developed to meet people's living and production needs. A large number of high-rise buildings with basements, underground garages, sunken squares, subways, underground shopping malls, etc. The use of underground space by buildings (structures) continues to develop in depth. In coastal cities where the underground soil layer is rich in water, the buoyancy of the basement caused by the buoyancy of the groundwater makes the problem of anti-floating of the basement increasingly prominent. The existing technologies mainly include: [0003] The existing main solutions include the use of uninterrupted drainage, such as the use of precipitation...

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Problems solved by technology

[0003] The existing main solutions include the use of uninterrupted drainage, such as the use of precipitation wells and water pumps for drainage; the use of underground space to keep the pouring belt unsealed; in special cases, such as severe weather such as typhoons, pouring water into the basement for back pressure , to resist the buoyancy; the upper part of the underground space should be loaded in advance, but during the construction, the construction cannot be organized reasonably. For example, the normal post-cast belt can be closed 40 days after the completion of the structure, but due to the completion of the upper structure and the surcharge , the construction period may take 1 to 2 years; in unexpected situations such as typhoons and heavy rains, it is difficult to maintain the floating effect; unforeseen factors such as power outages cannot guarantee continuous precipitation, and there are hidden dangers of floating, which makes it difficult to solve the problem of floating basements during the construction stage. For this reason, we propose a floating prevention device for underground space construction

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