Optical fiber detection device for monitoring flowing direction and flowing speed of underground water in observation well

A detection device and groundwater technology, which is applied in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve the problem of high cost of neutron activation

Active Publication Date: 2020-09-08
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, technologies such as neutron activation, but the cost of neutron activation is high and protective measures need to be taken

Method used

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  • Optical fiber detection device for monitoring flowing direction and flowing speed of underground water in observation well
  • Optical fiber detection device for monitoring flowing direction and flowing speed of underground water in observation well
  • Optical fiber detection device for monitoring flowing direction and flowing speed of underground water in observation well

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0016] Such as figure 1 with figure 2 As shown, the present invention provides an optical fiber detection device for monitoring the flow direction and velocity of groundwater in an observation well, which includes a device casing 1, which protects internal equipment from damage caused by external forces. An electronic compass 3 is movable inside the device casing 1, and the electronic compass 3 is used to measure the direction of water flow. A hole is opened in the center to avoid the position of the component, and is used to pass through the optical fiber 2 and the steel pipe 8. The steel pipe 8 passes through the center of the electronic compass 3, and the steel pipe 8 is fixedly connected w...

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Abstract

The invention discloses an optical fiber detection device for monitoring the flowing direction and the flowing speed of underground water in an observation well. The device comprises a device shell (1); an electronic compass (3) is movably arranged in the device shell (1); the lower part of the electronic compass (3) is connected with a connecting pipe (7); the lower part of the connecting pipe (7) is connected with a steering fan (6) in a vertical direction; the center of the electronic compass (3) is hollow, a steel pipe (8) penetrates through the center of the electronic compass (3) and isfixedly connected with the device shell (1) and used for fixing an optical fiber (2), the steel pipe (8) and the optical fiber (2) penetrate through the connecting pipe (7), and the lower end of the device shell (1) is connected with an optical fiber support (10) used for fixing a lower endpoint of the optical fiber (2). The optical fiber detection device for monitoring the flow direction and theflow speed of the underground water in the observation well is low in cost, not prone to being interfered by the surrounding electromagnetic environment and more accurate and stable by being comparedwith a common probe.

Description

technical field [0001] The invention relates to an optical fiber detection device for monitoring the flow direction and velocity of groundwater in an observation well, and belongs to the technical field of hydrogeological parameter monitoring. Background technique [0002] The groundwater observation well of the dam can observe the hydrogeological conditions near the dam for us. At present, there are many methods for measuring the flow direction of the groundwater. The traditional methods mainly include the pumping test method and the tracer method. These methods are not suitable for single Well monitoring is time-consuming and labor-intensive. The tracer method includes radioisotope tracer method, potential difference method, thermal tracer method, etc. The radioactive substances required by the radioisotope tracer method may cause harm to the human body and the environment. The tracer used in the tracer method can undergo physical and chemical reactions such as ion excha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/26G01P13/02
CPCG01P5/26G01P13/02
Inventor 茅昌平宋政锦杨张阳
Owner HOHAI UNIV
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