Monitoring and rapid positioning device for residual explosive in blast hole

Abstract

The utility model provides a monitoring and rapid positioning device for residual explosive in a blast hole, and belongs to the field of engineering blasting. The device comprises a sound production unit (a buzzer, a sound outlet hole and a buzzer connecting wire), a signal unit (an enameled wire, a wire slot, a radio frequency signal generation module, an ultra wide band (UWB) positioning module, a lithium battery pack and a circuit mainboard), a smoke unit (a heating wire, a solid smoke agent, a flue, an atomizer and a nozzle), a shell, a conical cap and a power switch. The enameled wire is arranged in a wire slot on the surface of the shell, is in contact with the explosive and is fused to connect a circuit under the action of detonation waves to trigger signal transmission; the buzzer gives an alarm through the sound outlet hole; the smoke unit ignites a smoke agent through an electric heating wire, and smoke is sprayed out of a nozzle through an atomizer. The conical cap and the nozzle are integrated, and the nozzle is pulled out and exposed after the outer skin of the cartridge is punctured; the power switch does not protrude out of the surface of the shell after being pressed down. According to the device, multi-dimensional positioning is achieved through sound, signals and smoke, and the accuracy and efficiency of on-site residual explosive positioning are improved.

Description

Technical Field

[0001] The utility model relates to the field of engineering blasting, and specifically to a device for monitoring residual explosives in blast holes and quickly positioning them. Background Art

[0002] In modern blasting engineering, the implementation of blasting operations usually requires continuous loading of multiple rolls of finished explosives into pre-drilled blast holes, and then detonating them using electronic detonators to form a detonation wave that propagates between the cartridges until all the explosives in the blast hole are completely detonated. The successful detonation transfer between cartridges depends on their continuity in the blast hole; once there is a gap between the cartridges, it may lead to the interruption of the detonation transfer process, leaving unexploded explosives, namely the so-called "residual explosives". The formation of residual explosives is largely attributed to the complex and changeable and unpredictable internal environment of the blast hole. Especially in deep-hole blasting operations with a depth often reaching dozens of meters, it is difficult for engineers to accurately judge the actual state of the cartridges in the blast hole. Factors such as rock protrusion and collapse in the blast hole may cause intervals between the cartridges, thereby blocking the transmission of the detonation wave. The existence of residual explosives constitutes an extremely unstable safety hazard at the construction site, seriously threatening the lives of construction workers and the surrounding people. Currently, the on-site safety monitoring mainly focuses on the monitoring of misfires, that is, assuming that once the electronic detonator in the blast hole detonates successfully, it is considered that the blast hole has been completely detonated. However, there are no active and effective monitoring means for the problem of residual explosive retention caused by the interruption of detonation transfer. The monitoring of misfires can be easily achieved through the status feedback of electronic detonators, but residual explosives are difficult to be accurately detected due to their unknown nature. Although there are existing technologies, such as patent CN113091546B, which preliminarily realizes the monitoring of residual explosives in blast holes through a break-make circuit and a positioning module, there are still many problems in actual tests. Specifically, the more prominent problems faced by the current technology include: First, the enameled wire is wrapped inside the outer shell. Due to the existence of the wave impedance of the outer shell, there is a high probability that the detonation wave cannot connect the enameled wire, resulting in the failure of monitoring; Second, the buried depth of the blast hole and electromagnetic interference will weaken the intensity of the positioning signal. The coverage of the post-blast muck pile will change the spatial layout of the original blasting area, thus blocking the line of sight of the inspection personnel, and further weakening the on-site precise positioning ability. This means that even if the existence of residual explosives is detected, it takes a lot of time to find the specific location, thus increasing the safety hazard. In view of the above situation, it is urgent to solve the deficiencies of the current technology and improve the accuracy and efficiency of on-site monitoring to ensure the safe progress of blasting operations. Summary of the Utility Model

[0003] In view of the deficiencies of the existing technology, the utility model provides a device for monitoring residual explosives in blast holes and quickly positioning them, which solves the above problems.

[0004] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0005] A device for monitoring and quickly locating residual explosives in a blast hole, specifically including:

[0006] U1, a sound - emitting unit, including a buzzer, a sound outlet hole, and buzzer connection wires;

[0007] U2, a signal unit, including enameled wire, a wire groove, a radio - frequency signal generation module, an ultra - wideband (UWB) positioning module, a lithium - battery pack, and a circuit main board;

[0008] U3, a smoke unit, including a heating wire, a solid smoke agent, a flue, an atomizer, and a nozzle;

[0009] The remaining components include a housing, a conical cap, and a power switch.

[0010] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the buzzer of U1 uses an MLT - 8540H piezoelectric buzzer, which can generate a continuous alarm sound after startup.

[0011] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the sound outlet hole of U1 is used for better diffusion of the buzzer sound.

[0012] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the enameled wire of U2 is placed in the wire groove on the surface of the housing, without being covered by the housing, and is in direct contact with the explosive.

[0013] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the radio - frequency signal generation module of U2 is used for receiving and sending signals of the device.

[0014] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the ultra - wideband (UWB) positioning module of U2 uses an MK8000 positioning chip, which is used for signal positioning of the device after detonation.

[0015] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the heating wire of U3 is placed in the solid smoke agent and is connected to the lithium - battery circuit.

[0016] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the solid smoke agent of U3 is ignited by the heating wire after being electrified, generating smoke.

[0017] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the atomizer of U3 is used to improve the diffusion efficiency and speed of the smoke.

[0018] Furthermore, for the device for monitoring and quickly locating residual explosives in a blast hole, the nozzle of U3 is used to spray out the smoke.

[0019] Furthermore, for the residual explosive monitoring and rapid positioning device in a blast hole, the conical cap is integrally connected to the nozzle before use, which is used to pierce the outer packaging of the cartridge, facilitating the insertion of the device into the cartridge while preventing the nozzle from being blocked by the explosive. After insertion, the conical cap is pulled out to expose the nozzle, facilitating the ejection of smoke.

[0020] Furthermore, for the residual explosive monitoring and rapid positioning device in a blast hole, its power switch adopts a self-locking push-button switch. When pressed, the switch remains in the pressed state and does not protrude from the outer surface of the housing, facilitating the insertion of the device into the cartridge while being able to prompt the construction personnel whether the device is in the on state.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. Due to the existence of the wave impedance of the outer shell in the prior art, there is a high probability that the detonation wave cannot connect the enameled wire, resulting in monitoring failure. In the present utility model, the enameled wire is placed in the wire groove on the outer surface of the housing, enabling it to contact the detonating explosive immediately and melt and connect instantly, avoiding the problem of monitoring failure.

[0023] 2. The prior art only locates through the positioning signal. Due to the interference of various factors at the blasting site, the positioning signal is weak and the positioning is inaccurate. Based on signal positioning, the present utility model integrates smoke positioning and sound positioning. Through multi-dimensional positioning methods, more accurate positioning information for the position of the residual explosive in the blast hole is provided, enhancing the positioning accuracy and helping to quickly handle and eliminate potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a residual explosive monitoring and rapid positioning device in a blast hole;

[0025] Figure 2 It is a front view of a residual explosive monitoring and rapid positioning device in a blast hole;

[0026] Figure 3 It is a top view of a residual explosive monitoring and rapid positioning device in a blast hole;

[0027] In the figure: 001 - outer shell; 002 - conical cap; 003 - power switch; 100 - sound generating unit; 101 - buzzer; 102 - sound outlet hole; 103 - buzzer connecting wire; 200 - signal unit; 201 - enameled wire; 202 - wire groove; 203 - radio frequency signal generating module; 204 - ultra-wideband (UWB) positioning module; 205 - lithium battery pack; 206 - circuit main board; 300 - smoke unit; 301 - heating wire; 302 - solid smoke generating agent; 303 - flue; 304 - atomizer; 305 - nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. The specific embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not used to limit the present utility model.

[0029] Embodiment:

[0030] Before using this device, it is necessary to verify the detonation direction of the blasting design, that is, forward detonation or reverse detonation. If the forward detonation method is adopted, this device should be inserted to the bottom end of the last cartridge in the blast hole; conversely, if it is reverse detonation, the device needs to be placed at the top of the cartridge closest to the blast hole mouth. During operation, first press the power switch 003 on the device to make the device in a working state. Then use the tip of the conical cap 002 to pierce the outer skin packaging from one side of the cartridge, ensure that the enameled wire 201 is facing the other end of the cartridge where the device is located, and slowly push it in parallel. When the device passes through the cartridge to the other side, use the conical cap 002 to pierce the outer layer again to form a through channel, and then remove the conical cap 002 to expose the nozzle 305. After the charging operation is completed, detonation can be carried out. At the moment of detonation, under the action of the detonation wave, the enameled wire 201 will fuse and connect the circuit, and the triggered radio frequency signal generating module 203 will immediately send a signal to the base station console. This signal indicates that the explosive has been completely detonated without residue. If the console does not receive the signal, it means that the explosive in the blast hole has not been completely detonated and there is residual explosive. For the device that does not send a signal, preliminary positioning can be carried out through a palm computer to find the approximate location. If the positioning signal is weak or the device location cannot be determined, an instruction can be sent to the device through the palm computer to trigger the smoke release and sound alarm. After the instruction is sent, the buzzer 101 of the device will immediately emit an alarm sound. At the same time, the heating wire 301 starts to heat up, ignites the solid smoke generator 302, and the generated smoke enters the atomizer 304 through the flue 303 and is finally ejected from the nozzle 305. At this time, the engineering personnel can quickly lock the location of the residual explosive according to the sound alarm and the smoke, and immediately carry out the treatment work of the residual explosive.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved. In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A residual charge monitoring and rapid positioning device in a blast hole, characterized in that, Comprising: a. A sound - generating unit, including a buzzer, a sound outlet hole, and buzzer connection wires; b. A signal unit, including enameled wire, a wire groove, a radio - frequency signal generation module, an ultra - wideband (UWB) positioning module, a lithium - battery pack, and a circuit main board; c. A smoke unit, including a heating wire, a solid smoke - generating agent, a flue, an atomizer, and a nozzle; d. A housing, a conical cap, and a power switch.

2. The device according to claim 1, characterized in that, The buzzer of the sound - generating unit uses an MLT - 8540H piezoelectric buzzer, which can emit an alarm sound to assist in locating the position of residual medicine.

3. The device according to claim 1, wherein The enameled wire of the signal unit is placed in the wire groove on the surface of the housing, without being covered by the housing, and is in direct contact with the explosive, reducing the interference of the housing on the transmission of the detonation wave, and more reliably fusing and connecting the circuit during an explosion, avoiding the problem of monitoring failure.

4. The device according to claim 1, characterized in that The heating wire of the smoke unit is placed in the solid smoke - generating agent and is connected to the lithium - battery circuit. The solid smoke - generating agent is ignited by the heating wire after being electrified to generate smoke.

5. The device according to claim 1, characterized in that, The atomizer is used to improve the diffusion efficiency and speed of the smoke.

6. The device according to claim 1, characterized in that, The conical cap is integrally connected with the nozzle during use and is used to pierce the outer packaging of the cartridge. After piercing the outer packaging of the cartridge, the conical cap needs to be pulled out to expose the nozzle.

7. The device according to claim 1, characterized in that, The power switch uses a self - locking push - button switch. When pressed, the switch remains in the pressed state and does not protrude from the surface of the housing.

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