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A method and device for lowering groundwater level by self-made small tube well

A groundwater level and tube well technology, which is applied in construction, infrastructure engineering and other directions to achieve the effects of small well completion, convenient processing, and simple construction and operation.

Active Publication Date: 2016-05-18
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A method and device for lowering groundwater level by self-made small tube well
  • A method and device for lowering groundwater level by self-made small tube well

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Embodiment

[0032] In specific implementation, such as figure 1 Shown. Dig some dewatering wells with a depth of about 2 meters and a diameter of about 0.8 meters along the bottom of the foundation pit. Then the filter tube 2 is made of a steel pipe 9 with a length greater than the depth of the dewatering well about 500 mm and a diameter of 300 mm. The bottom of the steel pipe 9 is sealed with a 5mm thick steel plate, and then the filter holes 10 are cut on the sidewall and bottom of the pipe well 9 by electric welding. The diameter of the filter holes 10 is 30mm, and the vertical and horizontal spacing of the filter holes 10 is about 80mm. The entire steel pipe needs to be buried in the ground The filter holes 10 need to be cut for the following parts. After the filter holes 10 are cut, the steel pipe 9 is sealed and wrapped with steel wire mesh as the filter screen 11. After the filter tube 2 is made, a section of the filter tube 2 with a filter screen 11 is vertically erected at the bo...

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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 the groundwater level by using a self-made small tube well, and belongs to the technical field of locally lowering the groundwater level. Background technique [0002] With the development of modern economy, high-rise buildings have become a major trend in the development of modern buildings. High-rise buildings often use raft foundations, box foundations or piled raft foundations. According to design requirements, the embedded depth of the building foundation should generally not be less than the building 1 / 15th of the height. Taking 99m, which is the most commonly used structure in 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. When excavating foundation earthwork, most of them will encounter groundwater, and the problem of precipitation has become a major problem...

Claims

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Application Information

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Patent Type & Authority Patents(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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