Water resisting and draining system for lowering underground anti-floating water level

Abstract

The invention discloses a water resisting and draining system for lowering the underground anti-floating water level. The water resisting and draining system is arranged on the periphery of an underground building and comprises a water filter layer, blind ditches, a drainage ditch and a water-resisting layer. The water filter layer surrounds the underground building, the blind ditches are arranged on the periphery of the water filter layer and connected in a criss-cross mode, outer ports of the blind ditches are connected with a municipal pipeline or the drainage ditch to drain sewage to the municipal pipeline, a permeable geotechnical cloth which has a filter effect is arranged under the water filter layer, the water-resisting layer is laid on the blind ditches and the water filter layer, the elevation of the water-resisting layer is lower than a ground road, and an overburden layer is arranged on the water-resisting layer. The water resisting and draining system solves the problem of anti-floating of the underground building, and is economical, safe and reliable, and particularly suitable for areas with high underground water level.

Description

technical field [0001] The invention relates to the field of civil engineering rock and soil foundations, in particular to a water-proof and drainage system for lowering the underground anti-floating water level. Background technique [0002] At present, in areas with a relatively high groundwater level in China, anti-floating design is often required for independent underground garages or underground buildings. However, when there is heavy rain or heavy rain, part of the surface water will seep into the soil, causing the underground water level to rise around the underground garage or underground building, which will affect the anti-floating design of the structure. The most commonly used anti-floating design is to use uplift piles or increase counterweight, and the use of uplift piles or increase counterweight will increase the cost of soil construction to a large extent on the one hand, and prolong the construction period on the other hand; One design method is to direct...

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Problems solved by technology

[0002] At present, in areas with a relatively high groundwater level in China, anti-floating design is often required for independent underground garages or underground buildings. However, when there is heavy rain or heavy rain, part of the surface water will seep into the soil, causing the underground water level to rise around the underground garage or underground building, which will affect the anti-floating design of the structure

The most commonly used anti-floating design is to use uplift piles or increase counterweight, and the use of uplift piles or increase counterweight will increase the cost of soil construction to a large extent on the one hand, and prolong the construction period on the other hand; One design method is to directly lower the groundwater level. At present, it is commonly used to set a drainage blind ditch under the floor of the underground garage, so that the groundwater can be discharged into the sump well through the drainage blind ditch, and then the water in the sump well is pumped away, thereby reducing the surrounding area of ​​the garage. Underground water level, this method often needs to design a water collection well inside or outside the underground garage, which increases the difficulty of construction. At the same time, it is difficult to remedy the blind drainage ditch if it fails

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