Ultrasonic variable frequency compound precipitation method

An ultrasonic and pumping well technology, which is applied in construction and infrastructure engineering, etc., can solve the problems of small flow rate and the uniformity of flow rate structure, and achieve the effects of increased drainage, low cost, and shortened precipitation time

Inactive Publication Date: 2017-06-13
YELLOW RIVER ENG CONSULTING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, all engineering construction dewatering methods rely on the natural flow of water in the formation between the pores under a certain hydraulic gradient, so the flow rate is small, and the flow rate is affected by the uniformity of the formation particle composition and structure

Method used

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  • Ultrasonic variable frequency compound precipitation method
  • Ultrasonic variable frequency compound precipitation method
  • Ultrasonic variable frequency compound precipitation method

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Embodiment Construction

[0016] Such as Figure 1-2 As shown, the ultrasonic frequency conversion composite dewatering method of the present invention is carried out according to the following steps: (the following pumping wells and launching wells are multiple, for ease of description, a pumping well and a launching well are taken as an example below for description. )

[0017] The first step is to set up pumping well 1 and launching well 2 in the area where precipitation treatment is required; the oscillation frequency of the ultrasonic generator is consistent with the frequency of the ultrasonic pulse signal sent by the pulse signal control device. The formation characteristic parameters are calculated; the shape of the ultrasonic generator can be selected as a rectangular plate, a semicircle, a cylinder or a point piece linear body according to actual needs;

[0018] In the second step, the first vertical lifting device is set in the launch shaft 2, and the ultrasonic generator 3 is placed at the...

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Abstract

The invention discloses an ultrasonic variable frequency compound precipitation method. A pumping well and an emitting well are formed in a territory needing to be precipitated; an ultrasonic generator is arranged in the emitting well; a submersible pump and an air guide pipe are arranged in the pumping well; the air guide pipe is connected with a vacuumizing device outside the pumping well; then, the top of the pumping well is sealed; the vacuumizing device is started to extract air in the pumping well; then, the submersible pump is started to extract underground water in the pumping well out of the well; when the underground water levels in the pumping well and the emitting well are not continuously lowered, the ultrasonic generator is driven to generate longitudinal waves to form a longitudinal wave field in surround stratum; in the propagation process of the longitudinal waves, water in gaps of the stratum is pushed to flow into the pumping well in the propagation direction of the longitudinal waves; and then, the water is pumped to the ground through a drain pipe by the submersible pump. The method has the advantages of scientific design principle, simple equipment structure, low cost, high precipitation working efficiency, shortening of the construction precipitation time, and improvement of the precipitation efficiency.

Description

technical field [0001] The invention relates to a dewatering method used after engineering construction dewatering to form a hole / well, in particular to an ultrasonic frequency conversion composite dewatering method. Background technique [0002] In engineering construction, when the groundwater level is higher than the engineering construction surface, certain methods need to be adopted to reduce the groundwater level to meet the requirements of dry land construction operations and ensure the quality of engineering construction. When the project needs to carry out dewatering operations during the construction period, there are many methods adopted, such as light well point method, tube well method or open ditch drainage method. These precipitation methods have a single form, low adaptability, and long precipitation time. Each method can only target certain stratum structures, and its precipitation effect is also greatly affected by the construction quality of holes or wells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10E02D19/20
CPCE02D19/10E02D19/20
Inventor 李清波
Owner YELLOW RIVER ENG CONSULTING
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