Tube-well structure, dewatering construction system and method suitable for high-permeability alluvial strata

A technology of tube well dewatering and high permeability, which is applied in infrastructure engineering, construction, etc.

Active Publication Date: 2021-04-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a tube well structure, dewatering construction system and method suitable for high-permeability alluvial formations, which can solve the problem of tube well silting in loose, water-rich and high-permeability alluvial formations, and effectively improve The construction quality of the tube well prolongs the service life of the tube well

Method used

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  • Tube-well structure, dewatering construction system and method suitable for high-permeability alluvial strata
  • Tube-well structure, dewatering construction system and method suitable for high-permeability alluvial strata
  • Tube-well structure, dewatering construction system and method suitable for high-permeability alluvial strata

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Embodiment 1

[0037] Attached below Figure 1-Figure 12 The present invention is described in detail, specifically, the structure is as follows:

[0038] This embodiment provides a tube well structure suitable for high-permeability alluvial formations, including a well tube 5, a filter cloth 6, a filter material 1, a pipe joint 4, and a well seat 20, such as figure 1 As shown, the adjacent tube wells are connected through the pipe joints 4 , and the well base 20 is arranged at the end of the last tube well 5 . The filter cloth 6 is wrapped on the outside of the well pipe 5, and the filter material 1 is placed outside the filter cloth 6. During the drilling process of the tube well, the properties of the soil layers at each depth are strictly recorded, and corresponding filter materials are filled in according to the distribution and thickness of the soil layers. 1.

[0039] Filter cloth 6 is respectively provided with different order number, number of layers according to the property of c...

Embodiment 2

[0052] This embodiment provides a tube well dewatering construction system suitable for high-permeability alluvial formations, including a piston well cleaning device and the tube well structure described in Embodiment 1. The piston well cleaning device extends into the well pipe 5 to clean the well pipe. 5 The inner wall is cleaned.

[0053] Such as figure 1 As shown, the piston well flushing device includes a piston 3 , a water pump 2 and a drain pipe 7 , and the drain pipe 7 passes through the piston 3 and is connected to the water pump 2 . Specifically, such as image 3 As shown, the piston 3 is a solid structure, the upper end of which is a cone, and the lower end is set as a hemisphere to reduce the resistance when moving the piston up and down. The center of the piston 3 reserves a hole for the drain pipe 7 to pass through. The method for flushing the well with the piston 3 of this embodiment is simple and easy to implement, and meets the requirement of simultaneous w...

Embodiment 3

[0055] This embodiment provides a tube well dewatering construction method suitable for high-permeability alluvial formations, using the tube well dewatering construction system described in Example 2, and the construction steps are: forming holes→running the tube well→filling the filter material→flushing the well.

[0056] specific:

[0057] (1) Preparation stage:

[0058] According to the geotechnical engineering survey strata, it is necessary to order different downwater pipe joints suitable for different strata.

[0059] (2) Hole forming:

[0060] The process of drilling and forming holes is recorded and corrected for surveying formations and different well pipes. Different drilling methods and different mud ratios are formulated according to different formations; specifically, for soft clay, sandy soil and other formations with sand inclusions, rotary drilling, auger drilling and other construction methods can be used for hole construction; for dense pebble gravel forma...

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Abstract

The invention discloses a tube well structure, a dewatering construction system and a method suitable for high-permeability alluvial formations, and its technical scheme is: comprising a well tube, the outside of the well tube is wrapped with filter cloth, and filter materials for layered filling are arranged outside the filter cloth ; Adjacent joint well pipes are connected through pipe joints, and the end of the bottom joint well pipe is connected to the well seat. The well pipe of the present invention is stable in connection, and the piston cleaning device can solve the problem of silting of the pipe well in the loose water-rich and high-permeability alluvial formation, effectively improve the construction quality of the pipe well, and prolong the service life of the pipe well.

Description

technical field [0001] The invention relates to the technical field of foundation pit dewatering, in particular to a tube well structure, dewatering construction system and method suitable for high-permeability alluvial formations. Background technique [0002] Tube well dewatering is the most common and effective method for foundation pit dewatering due to its convenient construction and economical rationality, and sand-free concrete tube is the most economical well tube type in tube wells. Silt wells are the most common damage to tube wells during use, and tube wells in loose, water-rich, high-permeability alluvial formations are more likely to suffer from silt wells. The silting well can be divided into two parts: the silting well outside the well and the silting well inside the well. The silting well outside the well is the outer wall of the well pipe blocked by soil particles, and the silting well inside the well is the silting well of soil particles in the well. Since...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/10
CPCE02D19/10E02D2600/20
Inventor 李连祥王雷赵永新赵忠杨高国忠曾纯品贾斌
Owner SHANDONG UNIV
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