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Quick dewatering method of positive and negative pressure for drainage piles in rigid body

A technology of drainage piles and positive and negative pressure, applied in the field of drainage of foundation piles, can solve problems such as slow drainage of foundation piles, and achieve the effects of saving materials, simple equipment and obvious effects.

Inactive Publication Date: 2007-05-09
天津鸿海科技开发有限责任公司
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  • Abstract
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Problems solved by technology

[0004] The technology of the present invention is to solve the technical problem of slow drainage speed of foundation piles by using the positive and negative pressure rapid drainage method of rigid body drainage piles

Method used

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  • Quick dewatering method of positive and negative pressure for drainage piles in rigid body
  • Quick dewatering method of positive and negative pressure for drainage piles in rigid body
  • Quick dewatering method of positive and negative pressure for drainage piles in rigid body

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Embodiment Construction

[0025] After the rigid body drainage pile sinks into the soil, the water in each soil layer (1) will permeate the water filter layer (5) along the water flow line (14), and enter the drainage channel (15) in the pile through the water hole (7). ) and constantly rising, after a period of time, the water level (4) in the pile is stable. Now, start submersible pump (8) drainage, see (Fig. 1).

[0026] After the submersible pump (8) started for a period of time, the water level (4) in the pile dropped to the bottom of the drainage channel (15), see (Fig. 2). Now, the water in each soil layer (1) still infiltrates the drainage channel (15) in the pile according to the above-mentioned method, and then starts the submersible pump (8) to drain water, in this way, cycle operation.

[0027] After a period of positive pressure drainage, the water in each soil layer (1) will seep very slowly. For accelerating water seepage, a sealing cover (11) is added on the top of the drainage channel...

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Abstract

The present invention relates to a drainage method of foundation pile, in particular, it relates to a positive and negative pressure quick drainage method of rigid body drainage pile. The invented principle is characterized by that when the positive pressure drainage efficiency is reduced, the negative pressure (namely evacuation) can be applied to the drainage channel in the pile interior, and can utilize water-filtering layer to increase hydraulic gradient of soil layer water penetration so as to accelerate water penetration and drainage.

Description

technical field [0001] The invention relates to a drainage method for foundation piles, in particular to a positive and negative pressure rapid drainage method for rigid body drainage piles. Background technique [0002] At present, regarding the drainage of foundation piles, the general methods at home and abroad are: natural drainage or positive pressure drainage. That is, the seeped water in the soil layer directly overflows outside the pile or is pumped out by the water pump. [0003] After the water in the pile is drained, wait for the next batch of water to seep out from the soil layer. The speed of seeping water is quite slow, and it takes a long time to reach the water level required for pumping before pumping out. This method is slow and incomplete. After several cycles of pumping, the water will seep out very slowly. up. The reason is that after the water in the soil layer flows out, the soil particles sink, the soil is consolidated, and the permeability coeffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/22E02D3/10
Inventor 马鸿春马骢马卓
Owner 天津鸿海科技开发有限责任公司
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