Portable magnetite ore prospecting device

Abstract

The application discloses a portable magnetite prospecting device, which is composed of a magnetic probe, a connecting screw and an extension rod, the magnetic probe is composed of a coil box, a copper coil, a thin film pressure sensor and an iron core, the coil box has an inner wall and an outer wall, and the two form a concentric cylindrical barrel, the iron core is arranged in the center of the coil box to form an electromagnet, the thin film pressure sensor is attached to the inner wall of the coil box, the copper coil is arranged in the annular space outside the thin film pressure sensor close to the outer wall of the coil box, the thin film pressure sensor is connected with an electronic notebook through a wire, and a length scale is arranged on the extension rod body.

Description

TECHNICAL FIELD

[0001] The present application relates to a portable magnetite prospecting device, belonging to the technical field of mine prospecting instruments. BACKGROUND

[0002] In the production and construction process of magnetite mine, the rock magnetism of the working face needs to be detected frequently, especially the positions where the occurrence of the ore body in the region is unknown, so as to determine the boundary of the ore body. If the boundary of the ore body is not determined in time, it is easy to cause the mining design not to meet the actual situation, resulting in waste of resources, so it is necessary for geologists to frequently enter the working face to carry out prospecting operation. SUMMARY

[0003] The purpose of the present application is to provide a portable magnetite prospecting device, which can detect the boundary between the ore and rock in the drill hole, use the characteristics that magnetite can be attracted by a magnet, convert the attractive force into pressure, judge the size of the pressure (attractive force) through the pressure sensor, and then judge whether there is magnetite in this area, and clarify the occurrence of the ore body.

[0004] The technical scheme adopted by the present application is a portable magnetite prospecting device, which is composed of a magnetic probe, a connecting screw and an extension rod. The magnetic probe is composed of a coil box, a copper coil, a thin film pressure sensor and an iron core. The coil box has an inner wall and an outer wall, which form a concentric cylindrical barrel. The iron core is installed in the center of the coil box to form an electromagnet. The thin film pressure sensor is attached to the inner wall of the coil box. The copper coil is arranged in the annular space outside the thin film pressure sensor near the outer wall of the coil box. The thin film pressure sensor is connected to an electronic notebook through a wire. The extension rod is provided with a length scale.

[0005] In use, the telescopic rod is used to send the magnetic probe into the bottom of the drill hole, the telescopic rod body is marked with a scale, and the scale value when the probe is placed at the bottom of the drill hole is recorded; the hand book switch is started, the current knob is adjusted to 0 position, the pressure value displayed on the display screen is recorded, the current knob is adjusted to increase the current, the iron core in the magnetic probe becomes an electromagnet, by observing the pressure value change displayed on the display screen, it can be judged that the entity is ore or rock, because the electromagnet and the magnetite exist mutual attraction force, therefore, with the increase of the current, the electromagnet magneticity is enhanced, if the entity here is magnetite, the pressure value in the display screen is larger, if the entity here is rock, the pressure value is unchanged; according to the scale on the telescopic rod, the telescopic rod is pulled out a distance, and the scale is recorded, the above steps are repeated to judge the ore and rock conditions here; the above steps are repeatedly repeated until the magnetic probe is pulled out of the drill hole, and the distribution of the ore and rock in the drill hole can be recorded. The coordinates of the drill hole opening position and the drill hole angle are measured by using the total station, the data is sorted and recorded, and the distribution of the ore and rock in the drill hole can be drawn on the geological plan and profile. The size of the magnetic probe of the instrument can be customized and replaced according to the size of the drill hole; because the distribution of the ore and rock is irregular and irregular, the distance of the telescopic rod pulled out each time must be adjusted according to the actual situation on the spot; the instrument can not only be used for underground roadway prospecting, but also can be used for open drill hole prospecting; the connecting line of the hand book and the probe includes a wire and a sensor connecting line; the application is suitable for prospecting in magnetite underground roadway at home and abroad, the instrument is simple to manufacture and install, has high detection precision, long service life, saves cost, and has good use and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a front view structural schematic diagram of the application;

[0007] Figure 2 It is a structural schematic diagram of the magnetic probe of the application. DETAILED DESCRIPTION

[0008] A portable magnetite prospecting device, as Figure 1 , 2As shown, the device is composed of a magnetic probe 1, a connecting screw and an extension rod 2. The magnetic probe 1 is composed of a coil box, a copper coil 6, a thin film pressure sensor 7 and an iron core 4. The coil box has an inner wall 8 and an outer wall 5, which form a concentric cylindrical tube. The iron core 4 is arranged in the center of the coil box to form an electromagnet. The thin film pressure sensor 7 is attached to the inner wall 8 of the coil box. The copper coil 6 is arranged in the annular space outside the thin film pressure sensor 7 close to the outer wall 5 of the coil box. The thin film pressure sensor 7 is connected to an electronic notebook 3 through a wire. The extension rod 2 is provided with a length scale. The electronic notebook 3 is an electronic recording device used for storing observation data and outputting the data according to the specified requirements in field measurement work.

Claims

1. A portable magnetite prospecting device, characterized by: The device is composed of a magnetic probe, a connecting screw and an extension rod, the magnetic probe is composed of a coil box, a copper coil, a thin film pressure sensor and an iron core, the coil box has an inner wall and an outer wall, the two form a concentric cylindrical barrel, the iron core is installed in the center of the coil box to form an electromagnet, the thin film pressure sensor is attached to the inner wall of the coil box, the copper coil is arranged in the annular space outside the thin film pressure sensor close to the outer wall of the coil box, the thin film pressure sensor is connected to an electronic notebook through a wire, and a length scale is arranged on the extension rod body; the electronic notebook comprises a current adjusting knob for controlling the current flowing into the copper coil to change the magnetic field strength; the device is suitable for the environment of downhole roadway drilling.

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