Blast hole detection device based on sonar laser ranging and use method thereof

Abstract

The invention discloses a blast hole detection device based on sonar laser ranging and a use method of the blast hole detection device, and relates to the field of blast hole detection. The fixing device comprises a support, a hollow connecting column, a fixing hole, a bolt, a nut and a small measuring tape. The inner wall of the hollow connecting column is provided with a thread connected with the measuring device, and the outer wall is provided with a fixing hole for fixing the bracket through a bolt and a nut; the small measuring tape is arranged on the outer wall of the hollow connecting column; the measuring device comprises a laser range finder, a sonar emitter, a sonar receiver, a control panel, a control button, scale marks and a horizontal bubble bead; the outer wall of the sonar receiver is provided with threads which are connected with the hollow connecting column. And the scale marks are arranged beside the horizontal bubble beads. The water layer distribution condition in the water-containing blast hole is detected through the sonar measurement principle and the laser ranging principle, convenience and rapidness are achieved, accurate data support is provided for blasting design, and the blasting effect of bench blasting of the strip mine is improved.

Description

Technical Field

[0001] The invention relates to the field of open-pit mine blasting blasthole detection, in particular to a blasthole detection device based on sonar laser ranging and a use method thereof. Background Art

[0002] At present, the on-site blasthole detection in open-pit mines is usually done by workers using ropes to tie up nearby rocks and put them into the blastholes to judge the internal conditions of the blastholes. Although this method is simple and convenient, it still damages the inner wall of the blasthole and is very time-consuming and labor-intensive. The Chinese invention patent with publication number CN118031768A discloses a blasthole measurement device and a method of use. It detects the internal conditions of the underground chamber engineering through the principle of laser ranging, and realizes the measurement of the horizontal inclination angle, vertical inclination angle and length of the blasthole. This device is also suitable for open-pit mine blasthole detection, but there are water holes in the open-pit mine blastholes. The above-mentioned device can only detect the part above the accumulation water surface in this case, and cannot measure the lower part of the accumulation water surface. Therefore, there is an urgent need for a new detection device to more accurately detect the total depth of the blasthole, the depth of water accumulation, and the dry hole depth above the accumulation water surface, provide construction blasthole data, provide data support for blasting design, and improve the blasting effect of open-pit mines. Summary of the invention

[0003] The present invention provides a blasthole detection device based on sonar laser ranging and a use method thereof, so as to solve the problems existing in the above-mentioned prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is: The invention discloses a blasthole detection device based on sonar laser ranging and a method for using the same, which relates to the field of blasthole detection, and includes a fixing device and a measuring device; the fixing device includes a bracket, a hollow connecting column, a fixing hole, a bolt, a nut and a small tape measure; the inner wall of the hollow connecting column is provided with a thread connected to the measuring device, and the outer wall is provided with a fixing hole to fix the bracket through bolts and nuts; the small tape measure is installed on the outer wall of the hollow connecting column; the measuring device includes a laser rangefinder, a sonar transmitter, a sonar receiver, a control panel, a control button, a scale line and a horizontal bubble bead; the outer wall of the sonar receiver is provided with a thread connected to the hollow connecting column; the scale line is arranged next to the horizontal bubble bead. The invention detects the distribution of water layers in water-containing blastholes through the sonar measurement principle and the laser ranging principle, which is convenient and fast, provides accurate data support for blasting design, and improves the blasting effect of open-pit mines.

[0005] Preferably, by adjusting the bolts and nuts, the tightness between the fixing holes can be adjusted, thereby adjusting the angle between the bracket and the connecting pipe, and adjusting the angle of the entire device, so that blast holes at different angles can be detected.

[0006] Preferably, the small tape measure measures the distance between the blasthole and the measuring device, and this distance is subtracted from the subsequently measured blasthole depth to obtain the actual depth of the blasthole.

[0007] Preferably, the moving direction of the bubbles in the horizontal bubble beads is aligned with one of the brackets, and the angle of the entire device is determined by adjusting the bracket according to the scale corresponding to the bubbles.

[0008] Preferably, the control panel can adjust measurement parameters of the laser rangefinder and the sonar transmitter.

[0009] Preferably, the laser rangefinder, sonar transmitter and sonar receiver are all installed parallel to the axis of the connecting pipe.

[0010] Preferably, the sonar transmitter is a focused sonar transmitter. Using a focused sonar transmitter can reduce the interference of the hole wall on the sound wave signal.

[0011] Preferably, the present invention provides a method for using a blasthole detection device based on sonar laser ranging: S1. Determine the location of the blasthole and clean the gravel and topsoil around the blasthole; S2. Open the fixing device of the device, adjust the tightness of the nut, and rotate the bracket to adjust the appropriate angle; S3, determine the angle of the blasthole, adjust the bracket aligned with the bubble in the horizontal bubble bead, and complete the adjustment of the angle of the fixing device according to the moving position of the bubble and the corresponding scale line; S4. Stretch the small tape measure to measure the distance from the measuring device to the blasthole plane; S5. Open the control panel through the control button, adjust the relevant measurement parameters, and perform measurement; S6. Calculate the water hole height through the measured relevant data.

[0012] The beneficial effect of the present invention is that the present invention adopts a focused sonar transmitter, which effectively reduces the interference of the inner wall of the blasthole on the propagation of sound waves, improves the accuracy and stability of echo measurement, and is particularly suitable for in-hole detection in complex environments, such as water holes. At the same time, the present invention combines laser ranging technology to accurately measure the length of the blasthole above the accumulation level. Laser ranging has the characteristics of non-contact and high precision, and can quickly provide accurate measurement results. The present invention uses the interval time between sonar emission and reception, combined with the measured length of the blasthole above the accumulation level, to calculate the thickness of the water layer. Accurate detection is achieved by combining the propagation speed and distance formula of the sound wave with the detection of echo signals. The technical combination of the present invention provides high-quality data support for blasting design, especially in optimizing the use of explosives and improving blasting effects. Accurate water layer measurement makes blasting operations safer and more economical, helps to reduce construction risks and costs, and improves construction efficiency. In summary, the present invention provides reliable technical support for measurement in complex environments through the combination of sonar and laser ranging, and improves the accuracy and benefits of blasting design and construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the fixing device of the present invention.

[0016] Figure 3 Schematic diagram of the measuring device of the present invention.

[0017] In the figure: 1-measuring device, 11-control panel, 12-level bubble, 13-scale line, 14-operating button, 15-sonar receiver, 16-sonar transmitter, 17-laser rangefinder, 2-fixing device, 21-small tape measure, 22-bolt, 23-fixing hole, 24-nut, 25-bracket 1, 26-bracket 2, 27-bracket 3, 28-hollow connecting column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figures 1 to 3 , comprising a fixing device (2) and a measuring device (1); the fixing device (2) comprises a bracket (22), a hollow connecting column (26), a fixing hole (23), a bolt (25), a nut (24) and a small measuring tape (21); the inner wall of the hollow connecting column (26) is provided with a thread connected to the measuring device (1), and the outer wall is provided with a fixing hole (23) for fixing the bracket through the bolt (25) and the nut (24); the small measuring tape (21) is installed on the outer wall of the hollow connecting column (26); the measuring device (1) comprises a laser rangefinder (17), a sonar transmitter (16), a sonar receiver (15), a control panel (11), a control button (14), a scale line (13) and a level bubble bead (12); the outer wall of the sonar receiver (15) is provided with a thread connected to the hollow connecting column (26); the scale line (13) is arranged next to the level bubble bead (12).

[0021] like Figure 2 The fixing device (2) is fixed by adjusting the angles of the bracket 1 (25), the bracket 2 (26), and the bracket 3 (27). After the fixing is completed, the angle of the entire device is adjusted by adjusting the angle of the bracket 2 (26) aligned with the horizontal bubble bead (12). The bubbles in the horizontal bubble bead (12) correspond to different scale lines at different positions, and the angle of the device can be obtained by observing the scale lines.

[0022] The small tape measure (21) is used to measure the distance between the blasthole and the measuring device (1). The actual depth of the blasthole is obtained by subtracting this distance from the blasthole depth measured subsequently.

[0023] like Figure 3 The measuring device (1) is used to adjust the measuring parameters through the control panel (11); the laser rangefinder (17) mainly measures the part above the surface of the reservoir; the sonar transmitter (16) and the sonar receiver (15) are mainly responsible for measuring the area below the surface of the reservoir. The measurement data below the surface of the reservoir is obtained by the time difference between two reflections of the sound wave passing through the interface.

[0024] This embodiment discloses a blasthole detection device based on sonar laser ranging and a method for using the same.

[0025] S1. Determine the location of the blasthole and clean the gravel and topsoil around the blasthole;

[0026] S2. Open the fixing device (2) of the device, adjust the tightness of the nut (24), and rotate the bracket 1 (25), bracket 2 (26), and bracket 3 (27) to adjust the appropriate angles;

[0027] S3, determining the angle of the blast hole, adjusting the support 2 (26) to which the bubble in the horizontal bubble bead (12) is aligned, and completing the adjustment of the angle of the fixing device according to the moving position of the bubble and the corresponding scale line (13);

[0028] S4, stretching the small measuring tape (21) to measure the distance from the measuring device (1) to the blasthole plane;

[0029] S5. Open the control panel (11) by using the control button (14), adjust the relevant measurement parameters, and perform measurement;

[0030] S6. Calculate the water hole height through the measured relevant data.

[0031] Total depth of blasthole = laser ranging depth (sum of dry hole depth above the accumulation water level and distance between blasthole and measuring device (1)) + sonar ranging depth (water hole depth below the accumulation water level) - distance between blasthole and measuring device.

[0032] The depth of accumulated water = the time difference of the received sound wave passing through the two interfaces for reflection ÷ 2 × the propagation speed of the sound wave in the water.

[0033] The depth of the dry hole above the accumulation level = the time difference between emitting the laser and receiving the laser ÷ 2 × the propagation speed of the laser in the air.

[0034] The distance between the blasthole and the measuring device (1) is measured by a small measuring tape (21).

[0035] A blasthole detection device based on sonar and laser ranging technology can not only accurately measure the distribution height of various media in the water hole, but also use the laser ranging function to measure the length of the dry blasthole, and can effectively determine whether the blasthole has collapsed, blocked or other abnormal conditions.

[0036] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A blasthole detection device based on sonar laser ranging and a method of using the same, relating to the field of blasthole detection, comprising a fixing device and a measuring device; the fixing device comprises a bracket, a hollow connecting column, a fixing hole, a bolt, a nut and a small measuring tape; the inner wall of the hollow connecting column is provided with a thread connected to the measuring device, and the outer wall is provided with a fixing hole to fix the bracket through bolts and nuts; the small measuring tape is installed on the outer wall of the hollow connecting column; the measuring device comprises a laser rangefinder, a sonar transmitter, a sonar receiver, a control panel, a control button, a scale line and a horizontal bubble bead; the outer wall of the sonar receiver is provided with a thread connected to the hollow connecting column; the scale line is arranged next to the horizontal bubble bead.

2. The blasthole detection device based on sonar laser ranging and the method of using the same according to claim 1, characterized in that: By adjusting the bolts and nuts, the tightness between the fixing holes can be adjusted, thereby adjusting the angle of the bracket.

3. The blasthole detection device based on sonar laser ranging and the use method thereof according to claim 1, characterized in that: The small measuring tape measures the distance between the blasthole and the measuring device.

4. The blasthole detection device based on sonar laser ranging and the method of using the same according to claim 1, characterized in that: The moving direction of the bubbles in the horizontal bubble beads is aligned with one of the brackets. By adjusting the bracket, the bubbles will move with the angle of the bracket, and the angle of the entire device is determined according to the scale corresponding to the bubbles.

5. The blasthole detection device based on sonar laser ranging and the use method thereof according to claim 1, characterized in that: The control panel is used to adjust the measurement parameters of the laser rangefinder, the sonar transmitter and the sonar receiver.

6. The blasthole detection device based on sonar laser ranging and the use method thereof according to claim 1, characterized in that: The laser rangefinder, sonar transmitter and sonar receiver are all installed parallel to the axis of the hollow connecting column.

7. The blasthole detection device based on sonar laser ranging and the use method thereof according to claim 1, characterized in that: The sonar transmitter is a focused sonar transmitter.

8. A blasthole detection device based on sonar laser ranging and a method for using the same as claimed in any one of claims 1 to 7, characterized in that: S1. Determine the location of the blasthole and clean the gravel and topsoil around the blasthole; S2. Open the fixing device of the device, adjust the tightness of the nut, and rotate the bracket to adjust the appropriate angle; S3, determine the angle of the blasthole, adjust the bracket aligned with the bubble in the horizontal bubble bead, and complete the adjustment of the angle of the fixing device according to the moving position of the bubble and the corresponding scale line; S4. Stretch the small tape measure to measure the distance from the measuring device to the blasthole plane; S5. Open the control panel through the control button, adjust the relevant measurement parameters, and perform measurement; S6. Calculate the water hole height through the measured relevant data.

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