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Vacuum dewatering well capable of reutilizing water resources and construction method thereof

A construction method and technology of precipitation wells, which are applied in water conservation, water supply devices, drinking water devices, etc., can solve the problems of increasing water costs at the construction site, easy generation of spring soil, and long precipitation duration

Pending Publication Date: 2020-10-30
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the fact that the existing dewatering wells for foundation pit engineering have a long duration of precipitation and a large drop in water level during the actual construction and practical process, the water content in the excavation depth range is rich and the permeability is strong, and the phenomenon of spring soil is easy to occur. Excavation will have adverse effects; and most of the drainage and drainage will be directly discharged into the municipal pipeline after being filtered, so the utilization of water resources is low and the cost of water at the construction site will be increased.

Method used

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  • Vacuum dewatering well capable of reutilizing water resources and construction method thereof
  • Vacuum dewatering well capable of reutilizing water resources and construction method thereof
  • Vacuum dewatering well capable of reutilizing water resources and construction method thereof

Examples

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Embodiment 1

[0032] A vacuum dewatering well that can make water resources secondary use, such as figure 1 and figure 2 As shown, it includes well hole 1, well pipe 2, filter 3, gravel sand layer 4, sealing coating 5, vacuum pump 6 and tertiary sedimentation tank 7; well pipe 2 is centrally placed in well hole 1; filter 3 is placed in the well pipe 2; the gravel sand layer 4 is filled in the gap between the well pipe 2 and the inner wall of the well hole 1; the sealing coating 5 is used to seal the top opening of the well hole 1 and the well pipe 2; the vacuum pump The water inlet of 6 is connected to the well pipe 2 through a pipeline, and the water outlet of the vacuum pump 6 is connected to the three-stage sedimentation tank 7 through a pipeline, and a vacuum is formed in the well hole 1 through the sealing coating 5, and the water in the ground aquifer is accumulated in the ground through the action of pressure. In the well pipe 2, and between the well pipe 2 and the well hole 1, the...

Embodiment 2

[0035] A kind of construction method, its construction flow chart is as follows image 3 Shown, be used for building above-mentioned vacuum dewatering well, construction method comprises the following steps:

[0036] Step 1: Measure and release the well position, and measure and release the well position on the ground according to the layout requirements of the well position;

[0037] Step 2: Drilling. Drilling is carried out on the well site to form a well site hole 1. After the hole is drilled on the foundation, it will reach the bottom. When the drilling construction reaches the design depth, it is advisable to drill 0.3-0.5m more as a reserved space. The space is flooded;

[0038] Step 3: lower the well pipe 2, put the well pipe 2 in the center of the well hole 1, measure the hole depth of the well hole 1 before running the pipe, and start lowering the well pipe 2 after the hole depth meets the design requirements;

[0039] Step 4: Fill the gravel sand, put the gravel sa...

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Abstract

The invention relates to the technical field of building construction, in particular to a vacuum dewatering well capable of reutilizing water resources and a construction method thereof. The dewatering well comprises a well position hole, a well pipe, a filter, a grit layer, a sealing coating, a vacuum pump and a tertiary sedimentation tank. The well pipe is placed into the well position hole. Thefilter is placed into the well pipe. A gap between the inner wall of the well position hole and the well pipe is filled with the grit layer. The sealing coating is used for sealing the well positionhole and an opening in the top end of the well pipe. A water inlet of the vacuum pump communicates with the well pipe through a pipeline. A water outlet of the vacuum pump communicates with the tertiary sedimentation tank through a pipeline. The construction method comprises the steps of logging the well position, drilling, discharging the well pipe, filling grit, sealing, washing the well, performing pump placement testing and draining. The geologic stability is kept, the geologic spring soil phenomenon is avoided, it is ensured that water resources are utilized to the maximum extent, and thecost for water on a construction site is lowered.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a vacuum dewatering well capable of secondary utilization of water resources and a construction method thereof. Background technique [0002] During the construction process of the foundation pit project, according to the characteristics of the engineering envelope and the geological and hydrological characteristics of the proposed site, the safety of the foundation pit project depends to a large extent on the success of the foundation pit dewatering, which makes the design of dewatering Reliability is very important. Therefore, according to the characteristics of foundation pit excavation and support, it is more practical to arrange dewatering wells before foundation pit engineering piles, enclosure, reinforcement and earthwork excavation. [0003] The underground tunnel drainage system that can be used by the dewatering well allows the water in the foundation pit ...

Claims

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Application Information

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IPC IPC(8): E02D19/10E03B3/12E03B3/15E03B3/24E03B3/18
CPCE02D19/10E03B3/12E03B3/15E03B3/24E03B3/18Y02A20/00
Inventor 尹伊宁李利贡剑波韩明磊
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD