Efficient Water Absorption Consolidation Method of Controllable Vacuum Negative Pressure Well under Membrane

A controllable, negative pressure well technology, applied in infrastructure engineering, soil protection, construction, etc., can solve the problem that a single set of vacuum pumping equipment has a small influence range, does not consider the fluid mechanics characteristics of the pipeline, and has a large vacuum pressure transmission loss. and other problems, to achieve the effect of easy to master the construction process, significant economic effect, and high drainage efficiency.

Active Publication Date: 2016-01-13
南京水科院瑞迪科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Limited by its tightness, the influence range of a single set of vacuum equipment in this method is small, the vacuum pressure transmission loss is large, and the operation effect is not satisfactory
In addition, this method mostly uses 50mm soft permeable pipes, corrugated pipes or soft spring pipes, without considering the mechanical properties of the pipeline fluid during the vacuum preloading drainage process, which can easily cause large and local losses of water flow, resulting in vacuum transmission. Low efficiency, large energy loss, low utilization rate
[0006] After searching, it was found that the Chinese invention patent (name: low-level vacuum preloading soft soil foundation reinforcement method) with application number 97100652.0 and authorized announcement number CN1055978C belongs to the above-mentioned low-level vacuum preloading reinforcement method. The main disadvantages are: (1) the The patent hopes to use the dredging-filling mud as the sealing layer to obtain a better sealing effect. However, it can be known from the patent that the sealing effect cannot be guaranteed after the surface of the dredging-filling mud is dry and cracked. Only by covering it with a plastic film can the seal be maintained. Increased processing procedures are not conducive to improving efficiency
(2) The water collection well is the core of the patented reinforcement method. Only when the water collection well maintains an effective negative pressure can the soft soil foundation and the dredging mud be forced to release water into the water filtration pipe network. However, the patent only briefly mentions that in At the end of the water filtration pipe network, a sealed water collection well is built, and it is not clear how to build it to ensure the sealing of the water collection well

Method used

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  • Efficient Water Absorption Consolidation Method of Controllable Vacuum Negative Pressure Well under Membrane
  • Efficient Water Absorption Consolidation Method of Controllable Vacuum Negative Pressure Well under Membrane
  • Efficient Water Absorption Consolidation Method of Controllable Vacuum Negative Pressure Well under Membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In this embodiment, a negative pressure sealing well is arranged in the center of the site for the deep treatment of general soft soil, such as Figure 1 to Figure 3 shown.

[0056] The implementation process is as follows:

[0057] Before implementing the above-mentioned reinforcement method, the surface of the site should be cleared and the defense line should be measured.

[0058] Then start to implement the above reinforcement method, and the points that need specific attention are as follows:

[0059] In the first step, hydraulic or vibratory machinery is used to drill the drainage board, and the drainage board is arranged in a square or plum blossom shape.

[0060] In the second step, the horizontal pipeline is laid in the sand cushion layer 20 with a thickness of 30-50 cm.

[0061] In the fourth step, the water inlet of the sealed well is sealed and communicated with the main pipe and the branch pipe respectively.

[0062] In the fifth step, the non-woven geo...

Embodiment 2

[0065] In this embodiment, a negative pressure sealing well is arranged on one side of the site for the deep treatment of general soft soil, such as Figure 4 , Figure 7 , Figure 8 shown.

[0066] The implementation process is basically the same as in Example 1, the difference is:

[0067] In the fourth step, the water inlet of the sealed well is sealed and connected with the main pipe.

Embodiment 3

[0069] In this embodiment, a negative pressure sealing well is arranged on one side of the site for the deep treatment of general soft soil, such as Figure 5 , Figure 7 , Figure 8 shown.

[0070] The implementation process is basically the same as in Example 1, the difference is:

[0071] In the third step, the horizontal pipeline is laid on a layer of braided cloth 5 .

[0072] In the fourth step, the water inlet of the sealed well is sealed and connected with the main pipe.

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Abstract

The invention relates to a method for efficiently absorbing water and solidifying under films through a controllable vacuum negative pressure well, or a CPC method for short. The method comprises the first step of longitudinal pipeline arranging, the second step of horizontal pipeline arranging, the third step of negative-pressure sealing well assembling, the fourth step of negative-pressure sealing well arranging, the fifth step of sealing film arranging and the sixth step of water draining and strengthening processing. Because a processing system composed of the controllable negative-pressure sealing well, longitudinal pipelines, horizontal pipelines and multiple layers of sealing films is adopted, the size of an area capable of being processed through a single suit of processing system can reach 5000-15000 square meters. The method for efficiently absorbing water and solidifying under the films through the controllable vacuum negative pressure well is high in water draining efficiency, and can greatly reduce electric quantity consumption of a unit area and improve pipeline water smoothness and sealing system stability.

Description

technical field [0001] The invention relates to a controllable under-membrane vacuum negative pressure well high-efficiency water absorption consolidation method, referred to as the CPC method, which is suitable for high-efficiency and negative-pressure controllable drainage reinforcement of soft soil foundations, and belongs to the technical field of soft soil foundation treatment. Background technique [0002] According to the applicant's knowledge, soft soil foundations generally exist in various engineering constructions, and can be divided into normally consolidated soft soil and under-consolidated soft soil from the perspective of consolidation. Among them, normally consolidated soft soil is more common, such as the common soft soil foundation in various industries such as transportation, water conservancy, construction, energy, and chemical industry. , vacuum combined surcharge preloading), composite foundation method (cement mixing pile, CFG pile, gravel pile), chemi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
Inventor 唐彤芝娄炎龚丽飞吴月龙朱方方张红王海鹏盛东升
Owner 南京水科院瑞迪科技集团有限公司
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