Method and apparatus for detecting Karst cave by resonance wave imaging

A resonant wave and karst cave technology, which is applied in measurement devices, measurement of resonant frequency, geophysical measurement, etc., can solve the problems of inability to perform reliable detection and effectively solve the problem of karst cave detection, and achieve convenient operation and high work efficiency. , the effect is obvious

Active Publication Date: 2012-07-11
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology

[0002] There are many ways to detect caves in engineering survey. At present, in the existing technology, drilling is often used to detect caves. Due to the randomness of cave development, often a Densely drilled holes have been drilled in the site, but the drill holes and the caves are still in the "edge ball" situation, and reliable detection cannot be carried out
Therefore, the existing simple drilling methods cannot effectively solve the problem of cave detection.

Method used

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  • Method and apparatus for detecting Karst cave by resonance wave imaging
  • Method and apparatus for detecting Karst cave by resonance wave imaging
  • Method and apparatus for detecting Karst cave by resonance wave imaging

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Embodiment 1

[0019] A method of the present invention for detecting caves by using resonance waves is to use an acoustic wave launching device as a vibration source to emit excitation waves around caves 10, and use the seismic waves or sound waves excited underground by the excitation waves to resonate with nearby caves. The device receives the resonance wave and detects unknown caves around the detection point based on the received resonance wave. The detection points are more than two boreholes, the distance between the borehole and the borehole is 10-50 meters, and the hole depth is greater than the hole distance. The transmitting device and the receiving device maintain a fixed height difference. They are excited and received sequentially from top to bottom or bottom to top in the same vertical borehole filled with water to obtain a vertical axis with the depth of the hole and the fluctuation time The wave pattern on the horizontal axis is called single-hole detection; for single-hole ...

Embodiment 2

[0022] The method for detecting caverns using resonance waves of the present invention is used to detect caverns. The method uses an acoustic wave emitting device as a vibration source to emit excitation waves around cavern 10, and the seismic waves or sound waves excited underground by the excitation waves and nearby A phenomenon in which caves resonate. Resonance waves are received by the receiving device, and unknown caves around the detection point are detected based on the received resonance waves. The detection points are more than two boreholes, the distance between the borehole and the borehole is 10-50 meters, and the hole depth is greater than the hole distance. The transmitting device and the receiving device maintain a fixed height difference, and are respectively put into two vertical boreholes filled with water to excite and receive from top to bottom or bottom to top, and obtain the vertical axis of the hole depth and the fluctuation The wave pattern with time a...

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Abstract

The invention discloses a method and an apparatus for detecting a Karst cave by resonance wave imaging. In the invention, a sound wave emitter is used as a vibration source to send excitation waves around the Karst cave, and unknown Karst caves around the detection points are detected according to the resonance waves received by a receiver in the light of resonance of earthquake wave or sound wave excitated by the excitation waves underground with adjacent Karst caves. The method provided by the invention makes full use of exploration holes, is agile in working mode, simple in requirement on instruments and equipment, remarkable in abnormalities, convenient to explain information and has remarkable effect, is an effective method to explore the Karst caves, and gives full play to task performance of the engineering seismograph and the sound wave instrument. The device used by the invention has a simple structure, and is easy to install on site, intuitionistic to identify and explain abnormalities, high in work efficiency, and wide in application scope. The maximum detecting range by the method reaches to more than ten meters around the holes. The invention can be widely applied to Karst exploration in the fields of urban construction, water conservancy and hydropower, and highway and railway and the like.

Description

technical field [0001] The invention relates to a method and device for detecting karst caves by using resonance wave imaging, and belongs to the technical field of geological detection. Background technique [0002] There are many ways to detect caves in engineering survey. At present, drilling is often used to detect caves in the existing technology. Due to the randomness of the development of caves, densely packed drill holes are often drilled in a site, but the drill holes and caves are still in the same shape. The "edge ball" situation cannot be reliably detected. Therefore, the existing simple drilling methods cannot effectively solve the problem of cave detection. Contents of the invention [0003] The object of the present invention is to provide a method and device for detecting karst caves by resonance wave imaging with less drilling amount, high work efficiency and high detection accuracy, so as to overcome the deficiencies in the prior art. [0004] The techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01H13/00
Inventor 王波
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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