Monitoring device for hole inspection before blasting

Abstract

The invention discloses a monitoring device for hole inspection before blasting operation, which comprises a mounting pipe, two ends of the mounting pipe are open, the length of the mounting pipe is not less than that of a blasting hole, one end of the mounting pipe is provided with at least one sensor, and the at least one sensor is a temperature sensor; a controller and a signal emitter are further arranged on the mounting pipe, the sensor and the signal emitter are electrically connected with the controller, and the signal emitter sends data of the sensor to a central control room in a wired or wireless mode. According to the monitoring device for hole inspection before blasting, the blast hole can be effectively monitored, when an abnormal value is found through monitoring, a blasting plan can be replaced according to the actual situation, and potential safety hazards of blasting can be reduced to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring equipment, in particular to a monitoring device for hole inspection before blasting. Background Art

[0002] In open-pit coal mines or other metal open-pit mining areas, blasting operations are generally used to strip rock and soil layers. According to the Public Security Management Regulations, before blasting, the holes drilled in the previous process in the blasting area must be inspected. The inspection parameters include hole temperature, hole depth and water content. In the actual production process, only when the parameters of the hole inspection before blasting meet the requirements and a strict blasting plan is formulated, can a unified blasting operation be carried out. This results in a certain time interval between the hole inspection operation and the blasting operation, and there is currently a lack of fast and effective technical equipment.

[0003] However, since some open-pit coal mines have goafs below the mine area, the bottom of the hole is rich in coal and oxygen. After full contact, combustion may occur, causing the temperature in the blast hole to rise. In this case, serious accidents such as premature explosions will occur.

[0004] At the same time, the current pre-blasting hole inspection process or method is generally inefficient. For example, manual methods are usually used, and workers use temperature sensors to detect blasting holes. However, the number of blasting holes in an area may reach hundreds. The manual inspection method is not only inefficient, but also time-consuming, labor-intensive, and costly. It is also a technical bottleneck in current blasting operations. Summary of the invention

[0005] In order to solve at least one of the above problems, the present invention proposes a monitoring device for drilling and blasting, which can effectively monitor the blasting holes and reduce the risk of blasting.

[0006] The technical solution of the present invention is: a monitoring device for drilling and blasting, comprising a mounting tube, both ends of which are open and the length of which is not less than the blasting hole, at least one sensor is arranged at one end of the mounting tube, and at least one sensor is a temperature sensor; a controller and a signal transmitter are also arranged on the mounting tube, the sensor and the signal transmitter are electrically connected to the controller, and the signal transmitter sends the data of the sensor to a central control room via wired or wireless means.

[0007] An embodiment of the present invention is that a plurality of sensors are provided, and at least two temperature sensors are provided.

[0008] An implementation manner of the present invention is that the sensor further includes an air pressure sensor and a humidity sensor.

[0009] An implementation manner of the present invention is that a GPS positioning device is also provided on the mounting pipe.

[0010] An implementation manner of the present invention is that the controller and the signal transmitter are arranged at an end of the mounting tube away from the sensor.

[0011] One embodiment of the present invention is that a protective cover is provided at the top of one end of the mounting tube away from the sensor, a protective ring is provided on the side wall of the mounting tube, the protective ring can slide on the mounting tube, and an annular protective plate is provided on the side of the protective ring away from the mounting tube.

[0012] Beneficial effects: The monitoring device for inspecting holes before blasting of the present invention can effectively monitor blasting holes. When abnormal values ​​are found during monitoring, the blasting plan can be changed and countermeasures can be taken according to the actual situation, thereby minimizing the safety hazards of blasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of this embodiment;

[0014] In the figure, 1 is a mounting tube, 2 is a temperature sensor, 3 is a humidity sensor, 4 is an air pressure sensor, 5 is a controller, 6 is a signal transmitter, 7 is a GPS positioning device, 8 is a battery, 9 is a protective ring, and 10 is a protective cover. DETAILED DESCRIPTION

[0015] The specific implementation modes of the present invention will be described clearly and completely below with reference to examples and drawings. Obviously, the described examples are only some embodiments of the present invention, rather than all embodiments.

[0016] like Figure 1 As shown, a monitoring device for drilling and blasting includes a mounting tube 1, the mounting tube 1 is open at both ends and its length is not less than the blasting hole, at least one sensor is provided at one end of the mounting tube 1, and at least one sensor is a temperature sensor 2; a controller 5 and a signal transmitter 6 are also provided on the mounting tube 1, the sensor and the signal transmitter 6 are electrically connected to the controller 5, and the signal transmitter 6 sends the data of the sensor to the central control room by wire or wireless means.

[0017] Specifically, in this embodiment, the installation tube 1 has multiple uses: the installation tube 1 can be used to fix and install the sensor, the signal transmitter 6 and the controller 5; at the same time, the installation tube 1 can also perform a simple measurement of the depth of the blasting hole to facilitate the subsequent filling of explosives. In this embodiment, the reason why both ends of the installation tube 1 are opened is to make the measurement result more accurate: the opening of the end of the installation tube 1 where the sensor is provided is mainly to make the temperature in the blasting hole easier to be detected by the temperature sensor 2; the opening of the other end of the installation tube 1 is mainly to avoid the problem of distortion of the detection result of the temperature sensor 2 due to untimely heat dissipation in the tube in hot weather.

[0018] Since both ends of the mounting tube 1 in this embodiment are open, in order to prevent external debris (such as rainwater, sand and gravel, plant branches and leaves, etc.) from entering the blasting hole through the mounting tube 1, the inventor sets a protective cover 10 at the end of the mounting tube 1 away from the sensor. The size of the protective cover 10 is larger than the cross-sectional size of the mounting tube 1, and the protective cover 10 is fixed by corresponding pillars 11. In order to better realize the protection function, the protective cover 10 can be set as a curved surface. Although the protective cover 10 set above can greatly reduce the probability of debris entering the blasting hole, it can only block the debris on the upper part. Some small debris or fluids, such as wind and sand and rain, may enter the blasting hole through the gap between the mounting tube and the blasting hole. In order to solve this problem, the inventor sets a slidable protective ring 9 on the side wall of the mounting tube 1. The protective ring 9 can slide on the mounting tube 1. The side of the protective ring 9 away from the mounting tube 1 is provided with an annular protective plate. The protective ring 9 can further reduce the amount of debris entering the blasting hole.

[0019] For the sensor, its main function is to monitor the temperature in the blast hole. When the temperature in the blast hole rises abnormally, it indicates that there is a risk of spontaneous combustion of coal or coalbed methane in the blast hole. For example, for some coal yards, the temperature in the blast hole must not be greater than 60°C. At this time, the blasting operation should be stopped until the risk of spontaneous combustion is eliminated, or the blast hole should be abandoned. In order to prevent the measurement result of a single temperature sensor 2 from being distorted, usually two or more temperature sensors 2 can be set to monitor it, and the two temperature sensors should be of different types, such as common thermocouple temperature sensors, thermistor temperature sensors, etc.

[0020] In order to further monitor the blasting hole, an air pressure sensor 4 and a humidity sensor 3 are also provided. The reason for providing the corresponding humidity sensor 3 is mainly to monitor whether there is water in the blasting hole. For blasting, it is usually divided into conventional explosives and waterproof explosives. If there is water in the hole, waterproof explosives should be selected for blasting or the blasting plan should be changed to avoid conventional explosives being wetted by water and causing blasting failure. At the same time, the humidity sensor 3 can monitor the humidity in the blasting hole. When there is water in the blasting hole, the humidity in the hole will rise rapidly.

[0021] In order to facilitate the positioning of the blasting hole with abnormal conditions, a GPS positioning device 7 is also provided on the mounting pipe.

[0022] As for the controller 5 and the signal transmitter 6, they are both conventional devices in the art. For example, a conventional single-chip microcomputer is used as the controller 5, which is a mature commercial product on the market. As for the signal transmitter 6, it is also a mature commercial product, so its specific structure is not described in detail here. At the same time, as for the signal transmitter 6, both a wired signal transmitter and a wireless signal transmitter can be used in this embodiment. The advantage of a wired signal transmitter is that the signal is stable, and the advantage of a wireless signal transmitter is that the cost is relatively low and it is easy to use. Those skilled in the art can select a suitable signal transmitter 6 according to the actual situation.

[0023] For the above-mentioned components, which are used in large quantities, all require electricity, such as sensors, controller 5 and signal transmitter 6. Although we can use a wired power supply, considering the actual convenience, we usually set a battery 8 as a power supply, which is more convenient.

[0024] When in use, for a drilled blasting hole, the end of the mounting tube 1 provided with the sensor is downwardly positioned inside the blasting hole, and then the sensor is started to monitor the inside of the blasting hole. When the sensor detects an abnormal value, the abnormal data is sent to the central control room through the signal transmitter 6. The central control room adjusts the blasting plan based on the signal emitted by the signal transmitter 6 and the GPS positioning.

[0025] Although a method of using the present embodiment is given above, those skilled in the art understand that the above method of using should not be regarded as a limitation of the present embodiment, and those skilled in the art may select other implementation methods according to actual conditions. For example, for the signal transmitter 6, those skilled in the art may also consider sending the sensor data to the central control room in real time. The advantage of this is that the records are more detailed, but the disadvantage is that it consumes more electricity and has higher requirements on the power supply.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A monitoring device for hole inspection before blasting, characterized in that: It includes a mounting tube, which is open at both ends and its length is not less than the blasting hole, and at least one sensor is provided at one end of the mounting tube, and at least one sensor is a temperature sensor; the mounting tube is also provided with a controller and a signal transmitter, the sensor and the signal transmitter are electrically connected to the controller, and the signal transmitter sends the data of the sensor to the central control room via wired or wireless means.

2. The device according to claim 1, characterized in that There are a plurality of the sensors, at least two temperature sensors are provided, and the two temperature sensors are of different types.

3. The device according to claim 1, characterized in that The sensors also include an air pressure sensor and a humidity sensor.

4. The device according to claim 1, characterized in that The installation pipe is also provided with a GPS positioning device.

5. The device according to claim 1, characterized in that The controller and the signal transmitter are arranged at one end of the installation tube away from the sensor.

6. The device according to claim 1, characterized in that A protective cover is provided on the top of one end of the mounting tube away from the sensor, a protective ring is provided on the side wall of the mounting tube, the protective ring can slide on the mounting tube, and an annular protective plate is provided on one side of the protective ring away from the mounting tube.

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