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A detection method for deep metal deposits in mining areas

A detection method and technology for metal ore, which can be applied in measurement devices, geophysical measurement, seismology and other directions, can solve the problems of poor metal ore exploration effect, complicated field operations, and high destructive power, and achieve better exploration effect and reliability. The effect of high noise ratio and short propagation path

Active Publication Date: 2021-03-12
JILIN UNIV
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Problems solved by technology

This is because the distribution of metal ores underground is very complicated, and rock dikes are mostly inclined, and the premise of applying reflection seismic is to assume that the underground medium is horizontally layered, so reflection seismic is not effective for metal ore exploration.
In addition, reflection seismic exploration requires artificially generated seismic sources. In areas with complex terrain, explosives are generally placed in ground holes as seismic sources, which is expensive, destructive, and field operations are complicated.

Method used

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  • A detection method for deep metal deposits in mining areas
  • A detection method for deep metal deposits in mining areas
  • A detection method for deep metal deposits in mining areas

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Embodiment 1

[0025] Taking a copper-nickel deposit as an example, using the geological information collected in the early stage, combined with the actual mining and detection conditions of the mining area, the 52nd line geological model profile of the second mining area was designed. Refer to figure 1 , and assign values ​​to the model, including lithology, the velocity of elastic wave propagation in the medium, and the density of various lithologies, see Table 1. The seismic signal receiving system adopts a short-period dense array, and the design is as follows: take the surface as the x-axis, and the vertical surface as the y-axis and the depth axis. The seismic source is arranged at (540,870) m of the model, and the stations are arranged on the surface, with a distance of 12 meters between the stations. A total of 161 stations are arranged. refer to figure 2 , using the seismic lighting technology, the model is simulated by seismic forward modeling, and the seismic synthetic record is...

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Abstract

The invention belongs to the technical field of underground metal ore detection, and in particular relates to a detection method for deep metal ore in a mining area. According to the source position of the mining blasting in the mining area, a blasting signal receiving system is arranged on the surface to receive and store the earthquake generated by the mining blasting within a certain period of time. After the signal and noise are received, the data will be transmitted to the computer for analysis and processing, and the distribution of the deep metal deposits in the mining area will be analyzed accordingly. Using mining blasting signals to detect deep metal mines, that is, using underground mining blasting in mining areas as the seismic source, without artificially generating seismic sources, greatly reduces costs, and is convenient for field operations. The seismic array has the advantages of active source and passive source exploration at the same time.

Description

technical field [0001] The invention belongs to the technical field of underground metal ore detection, and in particular relates to a detection method for deep metal ore in a mining area Background technique [0002] Compared with geophysical methods such as electromagnetic method, induced polarization method and gravity exploration, reflection seismic exploration has the advantages of deeper exploration depth, relatively higher accuracy and higher resolution. However, compared with energy exploration such as oil and gas, the seismic geological conditions involved in metal ore exploration and the geological problems that need to be solved are more complex. Seismic waves often scatter during propagation instead of reflecting signals. This is because the distribution of metal ores underground is very complicated, and rock dikes are mostly inclined, and the premise of applying reflection seismic is to assume that the underground medium is horizontally layered, so reflection se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/20G01V1/24G01V1/36
CPCG01V1/20G01V1/247G01V1/362
Inventor 冯晅李晓丹田有恩和德力海
Owner JILIN UNIV
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