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Method and apparatus of three-dimensional seismic tomography imaging

A tomography, three-dimensional seismic technology, applied in the field of mine exploration, can solve problems such as inaccurate determination

Active Publication Date: 2018-03-20
ANHUI UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method and device for three-dimensional seismic tomography to overcome the technical problem of inaccurate determination of the geological structure of the coal seam working face in the prior art

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  • Method and apparatus of three-dimensional seismic tomography imaging

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] figure 1 Schematic diagram of the layout of the seismic wave transceiver device provided by the present invention, figure 2 For the flow chart of Embodiment 1 of the method for three-dimensional seismic tomography provided by the present invention, see figure 1 , in the bottom pumping roadway 1 of the coal seam, the high pumping roadw...

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Abstract

The invention provides a method and apparatus of three-dimensional seismic tomography imaging. The bottom pumping tunnel, the high pumping tunnel and the coal tunnel of a coal seam are each provided with a plurality of detectors and a plurality of focuses. The method of three-dimensional seismic tomography imaging includes the steps: for each focus, acquiring seismic wave signals, emitted from theeach focus, received by all the detectors, after the seismic wave is propagated; and according to the seismic wave signals corresponding to each focus and the path length set, obtaining a propagationvelocity distribution image of P wave in the seismic wave in the space between the bottom pumping tunnel and the high pumping tunnel, wherein the path length set is a set which is formed by the propagated path length of the seismic wave in each network element of the three-dimensional velocity model of the space during the process that the seismic wave transmitted from the predicted focuses arrive at each detector. The image obtained through the method and apparatus of three-dimensional seismic tomography imaging can accurately reflect the construction characteristics of the practical coal seam working surface.

Description

technical field [0001] The invention relates to mine exploration technology, in particular to a method and device for three-dimensional seismic tomography. Background technique [0002] The application of coal mine mechanization has improved the level of coal mining, and the layout of the coal seam working face in the coal mining area tends to be larger in width and long in direction. Therefore, it is necessary to further strengthen the degree of attention to the geological conditions in the working face. The primary task of coal mine safety production is to ensure the safety of the staff, however, hidden geological anomalies in the coal seam working face often cause huge economic losses and casualties. Specifically, it includes the type, exact location and scale of geological bodies such as hidden structures. It is very important to find out the geological conditions in the working face timely and effectively for the safe and efficient production of the mine. [0003] Amo...

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Application Information

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IPC IPC(8): G01V1/34G01V1/28
CPCG01V1/286G01V1/345
Inventor 张平松胡泽安吴海波刘畅吴荣新郭立全
Owner ANHUI UNIV OF SCI & TECH
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