Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Blasting displacement measuring method and magnetic target device for measurement

A measurement method and magnetic target technology, which can be applied in measurement devices, blasting, geophysical measurement, etc., can solve problems such as damage to mine economic benefits and reduction of ore resource recovery rate.

Active Publication Date: 2018-07-06
CENT SOUTH UNIV +2
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ores with low value or rich reserves, blasting displacement has little impact on mine economy, but for rare ores with high value and low reserves such as gold, silver, and uranium, the ore loss and dilution caused by blasting displacement not only reduce the ore Resource recovery rate, and seriously damaged the economic benefits of the mine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Blasting displacement measuring method and magnetic target device for measurement
  • Blasting displacement measuring method and magnetic target device for measurement
  • Blasting displacement measuring method and magnetic target device for measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] This example is used for figure 1 The blasting displacement measurement of the blasting area of ​​the open-pit mine is shown. The ore deposits in this open-pit mine contain rock types such as granite, marble, gneiss, and schist. The ore deposits are complex in shape and inconsistent in size. Surrounded by waste rock. The step height is 7.5m, the hole diameter is 165mm, and the hole network parameters are 4.5×5.0m.

[0044] The specific implementation steps of this embodiment are as follows:

[0045] Step 1: Determine the initial ore-rock boundary line 1 in the explosion area based on the resource model obtained from mine exploration and geological cataloging; use the 3D mining software Datemine to open the mine geological model file, and use the ore grade as the standard for color assignment, without ore waste The ore blocks with different grades will show obvious color differences, so as to determine the initial ore-rock boundary line, the area within the initial ore...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a blasting displacement measuring method and a magnetic target device for measurement. A magnetic target device electrified intermittently is put in an auxiliary hole. After the magnetic target device is electrified, the magnetic target device will generate a local magnetic field at the placement position to disturb the geomagnetic field value at the placement position of amagnetic target, and an interference field will be formed around the magnetic target. The magnetic field intensity of the current area before and after the placement of the magnetic target is obtained by a high-precision proton magnetometer, and data export and diurnal variation correction are carried out by the preprocessing software of the proton magnetometer. A diurnal variation station is setin the magnetic field area to carry out diurnal variation correction on the magnetic field intensity data of a blasting area, the corrected magnetic field intensity data of the blasting site before and after blasting is obtained, the magnetic anomaly of the blasting area is calculated, and a magnetic anomaly magnetic field intensity contour map is drawn. A large number of closed magnetic field intensity contour lines appear in the magnetic anomaly magnetic field intensity contour map, and the position of the magnetic target is thus determined. The positions of the magnetic target before and after blasting are located, and the blasting displacement is measured and calculated according to the positions of the magnetic target before and after blasting.

Description

technical field [0001] The invention belongs to the field of blasting displacement measurement in open-pit precious metal mines, and in particular relates to a blasting displacement measurement method and a magnetic target device for measurement. Background technique [0002] At present, open-pit mines at home and abroad mainly adopt the method of step blasting for ore mining. For mines with complex ore deposits, many ores in the blasting area are surrounded by waste rocks in the form of islands. For this type of blast area, the ore and waste rock will move along the direction of the free surface during blasting. When the blasting displacement cannot be measured and predicted, mines often delineate the ore after blasting based on the ore position before blasting. Guide shoveling. For ores with low value or rich reserves, blasting displacement has little impact on mine economy, but for rare ores with high value and low reserves such as gold, silver, and uranium, the ore loss...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/40F42D1/00F42D1/08F42D3/04
CPCF42D1/00F42D1/08F42D3/04G01V3/40
Inventor 史秀志喻智卢宁毕林董文明苗小虎袁睿栋肖树清蔡兴琦谭期仁
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products