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Method of positioning and detecting high density concealed ore body in full spatial domain by tunnel gravity

A full-space, high-density technology that can be used in measurement devices, gravitational field measurement, geophysical measurement, etc.

Active Publication Date: 2014-11-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this paper only studies the density and structure of the underground gravity, and the terrain correction in the near area is corrected by the ground method, and no research on the location and detection of hidden ore bodies has been carried out; domain) to carry out the study of the plane characteristics and gravity profile of the gravity field, indirectly explore the distribution section of the lead-zinc ore body related to the ore-controlling marble, and carry out prospecting exploration on the surface in combination with other geophysical prospecting methods

Method used

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  • Method of positioning and detecting high density concealed ore body in full spatial domain by tunnel gravity
  • Method of positioning and detecting high density concealed ore body in full spatial domain by tunnel gravity
  • Method of positioning and detecting high density concealed ore body in full spatial domain by tunnel gravity

Examples

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Embodiment 1

[0098]Example 1: The method of detecting high-density concealed ore bodies in the whole space domain by tunnel gravity was implemented in a deep tunnel in a lead-zinc mining area in northeastern Yunnan, and achieved good ore prospecting results.

[0099] (1) Collect various rock and ore samples in the survey area, and carry out rock and mineral identification to determine the type of rock and ore

[0100] A total of 35 rock and mineral specimens were collected, including 19 surrounding rocks and 16 ores. The identification results are: 8 pieces of dolomitic limestone, 11 pieces of dolomite, and 16 pieces of lead-zinc ore (mainly galena and sphalerite, with a small amount of pyrite).

[0101] (2) Measure the density of rocks and ores in the survey area, and calculate the average density of rocks and ores

[0102] The density of the rock ore specimens was obtained by dividing the mass by the volume. The mass of the rock ore was measured by a balance, and the volume was measured...

Embodiment 2

[0156] Example 2: The method of detecting high-density concealed ore bodies in the whole space domain of tunnel gravity is applied to a sedimentary-metamorphic iron deposit in a mining area in southeastern Yunnan, and the effect is good.

[0157] (1) Collect various rock and ore samples in the survey area, and conduct identification to determine the type of rock and ore

[0158]A total of 20 specimens were collected, including 10 surrounding rocks and 10 ores. The identification results are: 10 pieces of sericite schist and 10 pieces of magnetite.

[0159] (2) Measure the density of rocks and ores in the survey area, and calculate the average density of rocks and ores

[0160] The density of the rock ore specimen is obtained by dividing the mass by the volume. The quality of the rock ore specimen is measured with a balance, and the volume is measured with a drainage method. The mass, volume, and calculated density results of each specimen are shown in Table 9; the surrounding...

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Abstract

The present invention discloses a method of positioning and detecting a high density concealed ore body in a full spatial domain by the tunnel gravity. The method is characterized in that firstly, the field tunnel gravity and the gravity gradient are observed, and various correction operations containing the earth tide correction, the null shift correction, the topographic correction, the Bouguer correction, the latitude correction, the tunnel correction, the mined-out area correction, the back filled region correction and the like are carried out on the observation data, and then the concealed ore body is positioned and detected by the corrected gravity abnormity and the gravity gradient abnormity in the X, Y and Z directions. The method solves the problems that a metal ore body is difficult to position in the full spatial domain, and the other geophysical exploration methods are influenced by the electromagnetic interference and the abnormity multiplicity, so that the deep ore body is difficult to position and detect accurately.

Description

technical field [0001] The invention relates to a method for positioning and detecting high-density concealed ore bodies in the full space domain of gravity in tunnels with high precision, and belongs to the field of mineral resource exploration. Background technique [0002] High-density concealed orebodies refer to concealed orebodies whose ore density is significantly higher than that of ore-hosting surrounding rocks. The location detection of concealed ore deposits (bodies) is the scientific frontier of metallogenic and metallogenic prediction and one of the main problems in the field of mineral exploration. Usually, geophysical prospecting methods (such as direct current method, magnetic method, electromagnetic method) are used in half-space domain ( Such as the surface) to detect hidden ore bodies, but these geophysical prospecting methods are difficult to achieve effective results in the location detection of hidden ore deposits (body) in the deep and full space domai...

Claims

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Application Information

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IPC IPC(8): G01V7/00G06F19/00
Inventor 韩润生李文尧王峰
Owner KUNMING UNIV OF SCI & TECH
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