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Method for detecting deep metallic ore in mining area

A detection method and technology for metal mines, applied in measuring devices, geophysical surveys, instruments, etc., can solve the problems of poor metal mine exploration results, complex field operations, and large destructive power, and achieve better exploration results and better signal-to-noise The effect of high ratio and short propagation path

Active Publication Date: 2019-07-23
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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  • Method for detecting deep metallic ore in mining area
  • Method for detecting deep metallic ore in mining area
  • Method for detecting deep metallic ore in mining area

Examples

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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, and a total of 161 stations are arranged. refer to figure 2 , using the seismic lighting technology, the model was simulated by seismic forward modeling, and the synthetic seismic reco...

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Abstract

The invention belongs to the technical field of detection of underground metallic ores, and in particular relates to a method for detecting a deep metallic ore in a mining area. According to a seismicsource position of mining blasting in the mining area, a blasting signal receiving system is arranged on the earth's surface; seismic signals and noise generated by mining blasting in a certain timeare received and stored; after receiving is ended, the data is transmitted to a computer to analyze and process; and furthermore, on this basis, the distribution condition of the deep metallic ore inthe mining area is analyzed. The deep metallic ore is detected by utilization of mining blasting signals; namely, underground mining blasting in the mining area is used as a seismic source; the seismic source does not need to be artificially generated; the cost is greatly reduced; furthermore, the field operation is convenient; and a seismic array simultaneously has the advantages of active sourceand passive source exploration.

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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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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