In-seam seismic multi-attribute parameter tomographic method

A multi-attribute, seismic data technology, applied in the field of channel wave seismic exploration in coal mines, can solve the problems that the geophone cannot receive the channel wave or P wave, and the inverse calculation speed, etc., and achieve remarkable results

Inactive Publication Date: 2017-05-17
南京君诺鑫成网络科技有限公司
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Problems solved by technology

This method can achieve good results under the condition of a relatively simple structure, but in the case of a slightly complex structure, such as a large fault can block the propaga

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  • In-seam seismic multi-attribute parameter tomographic method
  • In-seam seismic multi-attribute parameter tomographic method
  • In-seam seismic multi-attribute parameter tomographic method

Examples

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Embodiment 1

[0042] Example 1 Example of channel wave exploration in a coal mine working face:

[0043] (1) Geological tasks;

[0044] Faults and other structures in the coal seam bring certain hidden dangers to the safe production of coal mines. Therefore, it is necessary to ascertain the geological anomalies in the working face to provide geological guarantee for the mining of the working face. The geological tasks of channel wave seismic exploration in the working face are as follows: find out the development of faults with a drop greater than 1 / 2 of the coal thickness in the working face, find out the collapsed columns with a major axis diameter greater than 20m in the working face, and conduct investigations on other geological anomalies. Explanation.

[0045] (2) Overview of the working face;

[0046] The strike length of the coal mine working face is 1938m, and the slope length is 219.7m. The main coal seam of this working face is 3# coal seam, the thickness of the coal seam is g...

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Abstract

The invention discloses an in-seam seismic multi-attribute parameter tomographic method. The in-seam seismic multi-attribute parameter tomographic method includes the following steps: 1) theoretical model analysis; 2) seismic data pre processing; 3) a pickup method of parameters; 4) an energy and frequency correction algorithm; and 5) tomographic imaging. The in-seam seismic multi-attribute parameter tomographic method has the advantages of effectively solving the problems of construction, change of coal thickness and crushed zones of top and base plates in a working face, by utilizing the time of in-seam wave, P wave and S wave to inverse speed, utilizing the energy of in-seam wave, P wave and S wave to inverse tomography and utilizing the frequency of in-seam wave to inverse coal thickness, and by means of integrated comparison and analysis.

Description

technical field [0001] The invention relates to an underground channel wave seismic exploration method in coal mines, and more specifically relates to a channel wave seismic multi-attribute parameter tomography method. Background technique [0002] At present, channel wave seismic data tomography mainly uses channel wave time and P wave time parameters for velocity imaging, and inversely calculates the velocity distribution of channel waves or P waves in coal seams through time parameters, thereby inverting geological structure anomalies. This method can achieve good results under the condition of a relatively simple structure, but in the case of a slightly complex structure, such as a large fault can block the propagation of the channel wave or P wave, so that the detector cannot receive the channel wave or P wave , making it impossible to use the time parameter to inversely calculate the velocity. Moreover, the velocity parameter is not the most sensitive parameter for ch...

Claims

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Application Information

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IPC IPC(8): G01V1/28G01V1/30G01V1/36
CPCG01V1/282G01V1/301G01V1/306G01V1/362G01V2210/6222G01V2210/624G01V2210/64
Inventor 匡伟
Owner 南京君诺鑫成网络科技有限公司
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