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Stripe-shaped iron mine assessment method and device

A strip-shaped, iron ore technology, applied in the direction of measuring devices, sound wave re-radiation, instruments, etc., can solve problems such as the uncertainty of mineral deposit interpretation results, and achieve the effect of improving the prediction effect

Inactive Publication Date: 2015-04-22
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the uncertainties in the mineral deposit interpretation results of the current single geophysical method. The present invention proposes a banded iron ore evaluation method and device

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  • Stripe-shaped iron mine assessment method and device
  • Stripe-shaped iron mine assessment method and device
  • Stripe-shaped iron mine assessment method and device

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Embodiment 1

[0081] 1. Geological-geophysical model establishment

[0082] The flow process of the method of the present invention is specifically illustrated with the following mineral deposits as an example

[0083] The lower part is mainly composed of neutral volcanic rock, tuff and graywacke, and interbasic tuff, volcanic lava and sedimentary rock; the middle and upper parts are mainly composed of argillaceous rock, argillaceous graywacke, graywacke, marl and ferrosilicate. The ore bodies with industrial value are mainly produced in oxide phase iron-bearing formations, and there are four types of mineral paragenesis combinations: ①quartz+magnetite; ②quartz+spectralite; ③quartz+magnetite+silicate; ④Quartz + magnetite + specularite + silicate. Iron ore can be divided into three main models: layered model, syncline model and lenticular model. Therefore, the geophysical model parameters of the designed sedimentary iron ore are as follows: ore body cover layer 100m, ore body thickness h=5...

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Abstract

The invention relates to a stripe-shaped iron mine assessment method and device, and relates to the field of geology and geophysics. The stripe-shaped iron mine assessment method includes the steps that geology mineralization analysis is carried out on a to-be-assessed mine lot, a characteristic geologic model of the mine lot is built according to analysis results, and a geology-geophysics model corresponding to the characteristic geologic model is built; magnetic method surface sweeping measurement is carried out through magnetic method forward modeling of the geology-geophysics model, and status information of the mine lot in the horizontal direction is determined; transient electromagnetic method detection is carried out through transient electromagnetic forward modeling of the geology-geophysics model, and status information of the mine lot in the vertical direction is determined. Comprehensive advantages of the geology and the geophysics are comprehensively used, mutual restrains and mutual complementation are achieved, geology, superficial layer geophysics surface sweeping and electromagnetic detection is carried out under guiding of the geology mineralization theory, and the forecast effect of the mine lot is improved.

Description

technical field [0001] The invention relates to the fields of geology and geophysics, in particular to a strip iron ore evaluation method and device. Background technique [0002] At present, the Precambrian is rich in mineral resources, including iron ore, rare earth elements, lead-zinc, magnesite, etc., with huge reserves and considerable potential. Banded Iron-Formation is the iconic mineral of the early Cambrian and the most important type of iron ore in the world. It is characterized by large scale, easy mining, and easy beneficiation. The rich ore formed by this type of iron ore deposit accounts for about 70% of the world's rich iron ore reserves and more than 90% of the global iron ore output. The banded iron deposits have some notable features, and the ore-bearing rock series are mainly Late Archean volcanic rocks and volcanic-sedimentary rock series; the ore is relatively poor, and magnetite is the main one. A single ore body generally takes the form of layered, q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38
Inventor 薛国强陈卫营周楠楠崔江伟侯东洋杨建国王凯
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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