Method for eliminating pit buoyancy and pit structure

A buoyancy and pit technology, which is applied to the method and pit structure, eliminates the field of pit buoyancy, can solve the problems of material waste and large amount of materials, and achieves the effect of reducing material consumption, reducing construction difficulty, and realizing controllability.

Inactive Publication Date: 2009-04-22
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the above two methods consume a lot of materials. Since the buoyancy of the pit only appears in the rainy season, the seasonal variability

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  • Method for eliminating pit buoyancy and pit structure
  • Method for eliminating pit buoyancy and pit structure
  • Method for eliminating pit buoyancy and pit structure

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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation of the present invention.

[0018] Example. The method for eliminating the buoyancy of the pit of the present invention and the pit structure such as figure 1 and figure 2 shown. The method is to open an overflow hole on the ground pit, a filter screen is arranged at the opening of the overflow hole, and a filter layer is arranged in the hole of the overflow hole to prevent silt from entering the pit. When the groundwater level exceeds the overflow hole, the groundwater overflows into the pit, which increases the self-weight of the pit to balance the buoyancy brought by the rise of the groundwater level. The orifice of the overflow hole is provided with a water stop valve to artificially control the water level in the pit. There is a working platform in the pit above the overflow hole, and eq...

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Abstract

The invention discloses a method for eliminating pit buoyancy and a pit structure. The method is to provide spillway holes on the side wall of a pit so that ground water spills into the pit when the ground water level exceeds the spillway holes, so as to increase the sole weight of the pit and eliminate the buoyancy of the ground water to the pit. The pit structure is that one or more than one waterproof sleeve pipe is horizontally embedded on the side wall of the pit, filter screens and water check valves are arranged on the inner ports of the waterproof sleeve pipes, and filter layers are arranged in the waterproof sleeve pipes. The method can effectively reduce or completely eliminate the buoyancy generated by the ground water to the pit; the pit structure is simple and practical; the usage of construction materials can be greatly saved so that the construction cost is reduced and the material wastage is avoided. Besides, the method and the pit structure realize the real-time property and the controllability of buoyancy resistance for pit type buildings.

Description

technical field [0001] The method of the invention relates to a construction pit, in particular to a method for eliminating the buoyancy of the pit and a pit structure. Background technique [0002] The hollow structure of the pit is a common underground structure in industrial plants, and it is often used as an underground pump room. Because it is an underground hollow structure, when the groundwater level is shallow, it will generate a large buoyancy to the pit. If the self-weight of the pit is G, the buoyancy of the water is F. If the upward buoyancy F is greater than the self-weight G of the pit, The pit will float up, and if the rising speed of each part is inconsistent, it will cause the pit to crack or even be destroyed. This situation is more prominent in areas with obvious seasonal groundwater level changes. The obvious seasonal groundwater level changes are often due to the excessive concentration of rainfall in this area, and the rainfall in a year is often conce...

Claims

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Application Information

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IPC IPC(8): E02D31/12E02D29/045E04H5/06
Inventor 常建华
Owner GUIYANG AL-MG DESIGN & RES INST
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