Method and device using home-made small tube well to lower underground water level

A groundwater level and tube well technology, which is applied in construction, infrastructure engineering, etc., to achieve the effect of simple material selection, simple and convenient, and small well-forming range.

Active Publication Date: 2015-03-18
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Problems solved by technology

[0003] The object of the present invention is to provide a method and device for lowering the groundwater level by using self-made small tube wells with easy construction and good dewatering effect, so as to solve the problems in the foundation construction process. Encountered precipitation problems, thereby overcoming the deficiencies of existing technologies

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  • Method and device using home-made small tube well to lower underground water level
  • Method and device using home-made small tube well to lower underground water level

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Embodiment

[0032] In specific implementation, such as figure 1 shown. Evenly dig some precipitation wells with a depth of about 2 meters and a diameter of about 0.8 meters along the bottom of the foundation pit. Then make filter pipe 2 with the steel well pipe 9 of diameter 300mm greater than about 500mm of precipitation well depth with length. The bottom of the well pipe 9 is sealed with a 5 mm thick steel plate, and then electric welding is used to cut filter holes 10 on the side wall and bottom of the pipe well 9. The diameter of the filter holes 10 is 30 mm, and the vertical and horizontal spacing of the filter holes 10 is about 80 mm. The entire well pipe needs to be buried. Parts below the ground all need to cut the filter hole 10, after the filter hole 10 has been cut, the outside of the well pipe 9 is sealed and wrapped with a steel wire mesh as the filter screen 11. After the filter tube 2 was made, the filter tube 2 had a filter screen 11 section vertically standing on the...

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Abstract

The invention discloses a method and a device using a home-made small tube well to lower an underground water level. According to the method using the home-made small tube well to lower the underground water level, a water stop ring is formed at the periphery of a foundation ditch through arranging a group of home-made small tube wells at the bottom of the foundation ditch and pumping water in the home-made small tube wells to a drainage ditch in the top of the foundation ditch through a water pump; the underground water near the home-made small tube wells would not permeate into the foundation ditch in short time so that the foundation ditch construction requirements are satisfied. The method and device using the home-made small tube well to lower the underground water level are especially suitable for an engineering featured with small precipitation depth, rich underground water resource, large foundation soil permeation coefficient and large underground water flow rate; the home-made small tube well precipitation system is capable of lowering the underground water level near the well point in short time, when a plurality of tube well precipitation points are used together, the water stop ring is formed at the periphery of the foundation ditch, and the underground water level in the foundation ditch is lowered to the position which meets the construction requirements. The device using the home-made small tube well to lower the underground water level is broad in material source, easy and convenient to process, small in well completion range and obvious in precipitation effect.

Description

technical field [0001] The invention relates to a method and a device for lowering groundwater levels by using self-made small tube wells, and belongs to the technical field of locally lowering groundwater levels. Background technique [0002] With the development of the modern economy, high-rise buildings have become a major trend in the development of modern buildings. Most high-rise buildings use raft foundations, box foundations or pile-raft foundations. According to design requirements, the foundation embedding depth of buildings should generally not be less than 1 / 15 of the height, taking the structure height of 99m in the current high-rise buildings as an example, the embedded depth of the building foundation is about 7m. If the basement is double-layered, the embedded depth of the foundation may be deeper. Most of the excavation of foundation earth will encounter groundwater, and the problem of precipitation has become a major problem in construction. At present, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10E02D19/20
CPCE02D19/10
Inventor 银克俭曹德佳马平
Owner CCFED THE FIRST CONSTR & ENG
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