Blasting system and operating method for same

The present disclosure relates to a blasting system, the blasting system including: a drilling device configured to form blasting holes on a blasting target on the basis of a blasting design map; a charging device configured to place explosives in the blasting holes; detonators configured to detonate the explosives; a central control unit configured to confirm a position of a worker in real time, the worker driving the detonators; and a worker terminal configured to transmit worker position information to the central control unit, the worker position information indicating the worker position. The blasting system of the present disclosure can automatically connect the detonator to the central control unit, and improve worker convenience of the blasting work.

TECHNICAL FIELD

The present disclosure relates to a blasting system and an operating method for the same and, more particularly, to a blasting system and an operating method for the same, which are capable of automatically connecting a detonator to a central control unit, and of improving worker convenience of blasting work.

BACKGROUND ART

In general, explosives are used in engineering work, such as in rock blasting and in the demolition of buildings. That is, a plurality of holes, into which explosives are to be inserted, is drilled to correspond to the sections of a blasting target, i.e. the object to be blasted. After an explosive is inserted into each of the drilled holes, the explosives are connected to a blasting system. The explosives are ignited by operating the blasting system, thereby exploding the blasting target.

Such a blasting system includes a detonator serving as an igniter to ignite an explosive and a blasting device providing power necessary for the actuation of the detonator and a command signal to the detonator. Here, the detonator of the blasting system is generally implemented as an electric detonator. The electric detonator is disposed on an explosive side, and a plurality of electric detonators is connected to a single blasting device.

Such electric detonators may have a structure in which a plurality of detonators connected to a blasting device is simultaneously activated to simultaneously detonate explosives, or a structure in which a plurality of detonators connected to a blasting device is set to have different delay times to be sequentially activated to thus sequentially detonate explosives.

Although electric detonators simultaneously detonating a plurality of explosives have been used to date, electric detonators sequentially detonating a plurality of explosives are more commonly used at present. For example, blasting systems using such an electric detonator are disclosed in a plurality of documents, such as Korean Patent No. 10-1016538, Korean Patent No. 10-0665878, Korean Patent No. 10-0665880, Korean Patent No. 10-0733346, and Japanese Patent Application Publication No. 2005-520115.

Disclosure

Technical Problem

Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the prior art, and an objective of the present disclosure is to provide a blasting system and an operating method for the same, which are capable of automatically connecting a detonator to a central control unit.

Another objective of the present invention is to provide a blasting system and an operating method for the same, which are capable of improving worker convenience of blasting work.

Technical Solution

In order to accomplish the above objective, the present disclosure provides a blasting system. The blasting system according to an embodiment of the present disclosure includes: a drilling device configured to form blasting holes on a blasting target on the basis of a blasting design map; a charging device configured to place explosives in the blasting holes; detonators configured to detonate the explosives; a central control unit configured to confirm a position of a worker in real time, the worker driving the detonators; and a worker terminal configured to transmit worker position information to the central control unit, the worker position information indicating the worker position, wherein the detonators may be configured such that, when a detonator is driven by the worker, the detonator may transmit a register request to the central control unit, and the central control unit may include a detonator setting part configured to match the worker position at a time when the central control unit receives the register request with the blasting design map, to identify the detonator transmitting the register request, and to transmit setting data corresponding to the identified detonator to the identified detonator, and the setting data may include setting information, an initialization time, and a delay time.

The detonator setting part may be configured to confirm a detonator closest to the worker position at the time when the central control unit receives the register request in the blasting design map, and to identify the confirmed detonator as the detonator transmitting the register request.

The central control unit may include: a storage part configured to store the blasting design map; a positioning part configured to confirm a position of the drilling device, a position of the charging device, and a position of the worker terminal; a display part configured to display the blasting design map, the position of the drilling device, the position of the charging device, and the position of the worker terminal; and a blasting controller configured to transmit blasting commands to the detonators.

When at least one of the drilling device, the charging device, and the worker terminal is positioned within a blasting radius, the blasting controller may generate no blasting command.

The central control unit further may include: a drilling controller generating a first alarm, when the drilling device reaches designed positions of the blasting holes, wherein, while the blasting holes are formed by the drilling device, the drilling controller may receive drilling data indicating a drilling state from the drilling device.

The central control unit further may include: a charging controller generating a second alarm, when the charging device reaches the designed positions of the blasting holes, wherein, while the explosives may be placed into the blasting holes by the charging device, the charging controller may receive charging data indicating a charging state from the charging device.

The display part may be configured to further display the drilling state and the charging state.

Further, the blasting system of the present disclosure may include: a monitoring device configured to capture in the air an image of a blasting field in which the blasting target is positioned.

In order to accomplish the above objective, the present disclosure provides an operating method for a blasting system. The operating method according to an embodiment of the present disclosure may include: creating a blasting design map including designed positions where blasting holes are formed on a blasting target; arranging the blasting system on a blasting field where the blasting target is positioned, the blasting system including a central control unit, a drilling device, a charging device, and a worker terminal; forming, by the drilling device, the blasting holes on the basis of the blasting design map; placing explosives and detonators in the blasting holes by the charging device and then driving the detonators by a worker; matching a worker position at a time when the central control unit receives a register request with the blasting design map, identifying a detonator transmitting the register request, and transmitting setting data corresponding to the identified detonator to the identified detonator; preparing for blasting; and transmitting a blasting command to the detonator, wherein the detonators may be configured such that, when a detonator is driven by the worker, the detonator may transmit the register request to the central control unit, and the setting data may include setting information, an initialization time, and a delay time.

The transmitting the setting data may include: receiving the register request by the central control unit; confirming, by the central control unit, a detonator closest to the worker position at the time when the central control unit receives the register request in the blasting design map; identifying, by the central control unit, the confirmed detonator as the detonator that transmits the register request; and transmitting, by the central control unit, the setting data corresponding to the identified detonator to the identified detonator.

The preparing the blasting may include: confirming positions of the drilling device, the charging device, and the worker terminal; determining whether or not at least one of the drilling device, the charging device, and the worker terminal is positioned within a blasting radius; and completing the blasting preparation, when at least one of the drilling device, the charging device, and the worker terminal is not positioned within the blasting radius.

Advantageous Effects

As described above, the blasting system and the operating method for the same according to embodiments of the present, disclosure can automatically connect the detonator to the central control unit.

In addition, the blasting system and the operating method for the same according to embodiments of the present disclosure can improve worker convenience of the blasting work.

The advantages obtainable from the present invention are not limited to the aforementioned advantages, and other advantages not explicitly disclosed herein will be clearly understood by those skilled in the art to which the present invention pertains from the description provided hereinafter.

BEST MODE

Hereinafter, embodiments of the present disclosure and matters necessary for those skilled in the art to readily understand the features of the present disclosure will be described in detail with reference to the accompanying drawings. These embodiments are only provided for illustrative purposes, since the present, disclosure may be implemented in a variety of different forms without departing from the scope of the present disclosure defined by the claims.

In the drawings, the same components will be designated by the same reference numerals. In addition, the thicknesses, ratios, and sizes of the components may be exaggerated for effective descriptions of technical features. The expression “and/or” includes any one or any combination of the mentioned items.

Terms such as “first” and “second” may be used herein to describe a variety of elements, and the elements should not be limited by the terms. The terms are only used to distinguish one element from other elements. Thus, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Singular forms used herein are intended to mean “one or more” unless the context clearly indicates otherwise.

Terms, such as “below”, “beneath”, “under”, “lower”, “above”, and “upper”, may be used herein for ease of description of the relationship of an element to other elements as illustrated in the drawings, such terms should be construed as describing relative relationships, and are used with respect to the orientations depicted in the drawings.

It will be further understood that the terms “comprise”, “include”, “have”, etc. when used in this specification, specify the presence of stated features, integers, steps, operations, components, parts, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps. operations, components, parts, and/or combinations thereof.

That is, the present disclosure is not limited to the embodiments disclosed below, and may be realized in various other forms. It will be understood that when an element is referred to as being “connected” to another element, not only can it be directly connected to the other element, but it can also be electrically connected to the other element via an intervening element. In designating elements of the drawings by reference numerals, the same elements will be designated by the same reference numerals even when they are shown in different, drawings.

FIG. 1is a view showing a blasting system10according to an embodiment of the present disclosure.

Referring toFIG. 1, the blasting system10may include a central control unit100, detonators200, a drilling device300, a charging device400, a worker terminal500, a monitoring device600, and a wireless network700.

The central control unit100may control the whole operation of the blasting system10. Specifically, the central control unit100may confirm positions of the drilling device300, the charging device400, and the worker terminal500in real time. A detailed description thereof will be described inFIGS. 2 to 10.

The central control unit100may generate a blasting command. The central control unit100may transmit the blasting command to the detonators200through the wireless network700. The detonators200may count a delay time on the basis of an initialization time. When counting the preset delay time is completed, each of the detonators200may detonate an explosive40connected thereto. Accordingly, the blasting system10may explode a plurality of explosives40, and explode a blasting target20.

The detonators200may be integrally formed with the explosives40, and may detonate the explosives40. For example, when the detonators200are driven by a worker, the detonators200may transmit the register requests to the central control unit100through the wireless network700in order to be connected with the central control unit100. The detonators200may be connected with the central control unit100through the wireless network700, and may be moved by being controlled by the central control unit100. The detonators200may be set by setting data that is received from the central control unit100. At this point, the setting data may include setting information, an initialization time, and a delay time of each of the detonators200. Further, the detonators200may be exploded by the blasting command that is transmitted from the central control unit100.

The drilling device300may form blasting holes30on the blasting target20on the basis of the blasting design map. In the specification, the drilling means that the blasting holes30are formed by drilling the blasting target20. For example, the drilling device300may be connected with the central control unit100through the wireless network700, and be operated by control of the central control unit100. Further, the drilling device300may transmit position information or operation information of the drilling device300to the central control unit100.

The charging device400may place the explosives40and the detonators200into the blasting holes30. In the specification, the charging means that the explosive40and the detonators200are placed into the blasting holes30. For example, the charging device400may be connected with the central control unit100through the wireless network700, and may be moved by the control of the central control unit100. The charging device400may transmit position information or operation information of the charging device400to the central control unit100.

The worker can perform the blasting work with the worker terminal500. For example, the worker can sequentially approach one of the detonators200after charging is completed, and then the worker can drive the detonator200. In the specification, driving the detonator200may mean that the detonator200is powered on or switched from a sleep mode to a normal node.

The worker terminal500may be connected with the central control unit100through the wireless network700. Further, the worker terminal500may generate position information indicating a position of a worker, and transmit the position information to the central control unit100through the wireless network700.

The monitoring device600may capture in the air an image of a blasting field in which the blasting target20is positioned. For example, the monitoring device600may be connected with the central control unit100through the wireless network700, and may capture an image of an indicated position under the control of the central control unit100. Accordingly to the embodiment, the monitoring device600may be implemented as a drone.

The wireless network700may be implemented in all kind of wireless networks, such as mobile radio communication network including long term evolution (LTE), Bluetooth™, Bluetooth low energy (BLE), Zigbee, Thread, wireless-fidelity (Wi-Fi), wireless broadband internet (Wibro), and long range (LoRa).

The drilling device300, the charging device400, the worker terminal500, and the monitoring device600may include a global positioning system (GPS) device that receives a satellite signal to determine a position.

FIGS. 2 and 3are views showing the blasting design map according to embodiments of the present disclosure.

Referring toFIGS. 1 to 3, for efficient blasting of the blasting target20, the blasting design map may be created during blasting design. The created blasting design map may be stored in the central control unit100.

On the basis of map data, the blasting design map may include position information (P1, P2, to Pn, n is a natural number of 3 or more) about designed positions of the blasting holes in which the detonators200are respectively disposed, group information (G1, G2, to Gm, m is a natural number of 3 or more) about each of the detonators200, and identifiers (I1, I2, to In) of the detonators200. However, the present disclosure is not limited thereto, and the detonators200may be grouped into one or two groups in some embodiments.

The blasting design map may include delay times (D1, D2, to Dn), setting information (S1, S2, to Sn), and initialization times (T1, T2, to Tn) for each of the detonators200. In some embodiments, the initialization times (T1, T2, to Tn) for each of the detonators200may have the same value.

A blasting radius BR may mean a geographical range affected by the explosion of the explosives40. For example, the blasting radius BR may be any area that is set up to define a safe area in which workers or devices are not affected by the blasting.

FIG. 4is a view showing the central control unit100according to the embodiment of the present disclosure.

Referring toFIGS. 1 to 4, the central control unit100may receive a storage part110, a positioning part120, a drilling controller130, a charging controller140, a detonator setting part150, a display part160, a monitoring controller170, and a blasting controller180.

The storage part110may store the blasting design map. In some embodiments, the storage part110may be implemented in a read only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), a solid state drive (SSD), etc.

The positioning part120can identify positions of the drilling device300, the charging device400, and the worker terminal500. For example, the positioning part120may identify the positions in real time by receiving position information from the drilling device300, the charging device400, and the worker terminal500, or periodically transmitting radio technical commission for maritime services (RTCM) data to the drilling device300, the charging device400, and the worker terminal500.

The drilling controller130may control operation of the drilling device300. For example, when the drilling device300reaches the designed positions of the blasting holes30, the drilling controller130may generate a first alarm. By the first alarm, the worker can confirm that the drilling device300has reached the designed positions of the blasting holes30, and can control the operation of the drilling device300. While the blasting holes30are formed by the drilling device300, the drilling device300may generate drilling data indicating a drilling state. The drilling device300may transmit the drilling data to the drilling controller130, and the drilling controller130may check the drilling state on the basis of the drilling data. In some embodiments, the drilling device300may include a motion sensor, a pressure sensor, etc., and the drilling data may indicate the motion or pressure of the drilling device300.

The charging controller140may control an operation of the charging device400. For example, when the charging device400reaches the positions of the blasting holes30, the charging controller140may generate a second alarm. By the second alarm, the worker can check that the charging device400has reached the positions of the blasting holes30, and can control the operation of the charging device400. While the explosives40are placed by the charging device400, the charging device400may generate charging data indicating a charging state. The charging device400may transmit the charging data to the charging controller140, and the charging controller140may check the charging state on the basis of the charging data. In some embodiments, the charging device400may include a motion sensor, a pressure sensor, etc., and the charging data may indicate the motion or pressure of the charging device400.

The detonator setting part150may receive a register request from the detonators200. The detonator setting part150may match a position of the worker at the time when the central control unit receives the register request with the blasting design map. The detonator setting part150may identify the detonator200transmitting the register request, and may transmit setting data corresponding to the identified detonator to the identified detonator200. A detailed description of the detonator setting part150in this regard is described inFIGS. 5 to 9.

The display part160may display the blasting design map, and positions of the drilling device300, the charging device400, and the worker terminal500. Further, the display part160may display the drilling state. A detailed description of the display part160in this regard will be described inFIG. 10. In some embodiments, the display part160may be implemented in a liquid crystal display device, an organic light emitting display device, etc.

The monitoring controller170may control an operation of the monitoring device600. For example, the monitoring device600may capture an image of the blasting field in the air, and prior to blasting, the monitoring controller170may control the monitoring device600to indicate to the worker whether the blasting is normally performed.

The blasting controller180may generate a blasting command for the detonators200. For example, when at least one of the drilling device300, the charging device400, and the worker terminal500is positioned within the blasting radius BR, the blasting controller180may not generate the blasting command. When at least one of the drilling device300, the charging device400, and the worker terminal500is not positioned within the blasting radius BR, the blasting controller180may transmit the blasting command to the detonators200.

FIGS. 5 to 9are views showing an operation of a detonator setting part150according to the embodiment of the present disclosure. For convenience of description, a first detonator200-1and a second detonator200-2are shown in the drawing together, but the present disclosure is not limited thereto. In some embodiments, a detonator may be provided as various numbers.

Referring toFIGS. 5 to 9, the detonator setting part150may receive a worker position information TI from the positioning part120to confirm the worker position depending on the time, that is, a work path of the worker.

The worker can move along the work path with the worker terminal500, and drive a first detonator200-1and a second detonator200-2that are positioned on the work path. For example, as shown inFIG. 6, at a first point of time TT1, the worker can drive the first detonator200-1. The first detonator200-1driven by the worker may transmit a register request RR to the detonator setting part150of the central control unit100(referring toFIG. 1). As shown inFIG. 7, at a second point of time TT2, the worker may drive the second detonator200-2. The second detonator200-2driven by the worker may transmit the register request RR to the detonator setting part150.

The detonator setting part150may extract a first position W1of the worker at the time of the first point of time TT1, that is, when the detonator setting part150receives the register request RR. The detonator setting part150may match the first worker position W1with the blasting design map. That is, the detonator setting part150may confirm a designed detonator position P1closest to the first worker position W1at the time when the detonator setting part150receives the register request RR in the blasting design map. Further, the detonator setting part150may identify the detonator corresponding to the confirmed designed position P1as the first detonator200-1transmitting the register request RR at the first point of time TT1.

The detonator setting part150may extract a second position of the worker at a second point of time TT2, that is, at the time when the detonator setting part150receives the register request RR. The detonator setting part150may match the second worker position W2with the blasting design map. That is, the detonator setting part150may confirm a designed detonator position P2closest to the second worker position W2at the time when the detonator setting part150receives the register request RR on the blasting design map. Further, the detonator setting part150may identify the detonator corresponding to the confirmed designed position P2as the second detonator200-2transmitting the register request RR at the second point of time TT2.

The detonator setting part150may transmit first setting data SD1to the first detonator200-1, and transmit second setting data SD2to the second detonator200-2. The first setting data SD1may include setting information, an initialization time, and a delay time of the first detonator200-1, and the second setting data SD2may include setting information, an initialization time, and a delay time of the second detonator200-2.

FIG. 10is a view showing a display range of the display part160according to the embodiment of the present disclosure.

Referring toFIGS. 1, 4, and 10, the display part160may display the positions of the drilling device300, the charging device400, and the worker terminal500on a display area. For example, the display part160may indicate the position of the worker terminal500as a first image IM1, the position of the charging device400as a second image IM2, and the position of the drilling device300as a third image IM3. For convenience of description, the first to third images IM1, IM2, and IM3are illustrated as arbitrary shapes (star, rectangle, and triangle) inFIG. 10, but the present disclosure is not limited thereto. In some embodiment, the display part160may indicate the positions of the drilling device300, the charging device400, and the worker terminal500in various ways on the display area.

Further, the display part160may display the drilling states and the charging states of the blasting holes30on the display area DA. For example, the display part160may indicate a first state in which the drilling is not completed with a first state image DS1, a second state in which drilling is completed and charging is not completed with a second state image DS2, and a third state image in which charging is completed with a third state image DS3. For convenience of description, the first to third state images DS1, DS2, and DS3are illustrated with arbitrary shapes (dotted circle, solid-line circle, and patterned circle), but the present disclosure is not limited thereto. In some embodiments, the display part160may display the drilling states and the charging states of the blasting holes30in various ways on the display area DA.

FIG. 11is a flowchart showing an operating method for a blasting system according to an embodiment of the present, disclosure.

Referring toFIGS. 1 to 11, the blasting design map may be created (S10). For example, on the basis of the map data, the blasting design map may include: the position information (P1, P2, to Pn, n is a natural number of 3 or more) about the designed positions of the blasting holes on the blasting target20; the group information (G1, G2, to Gm, m is a natural number of 3 or more) about each of the detonators200; the identifiers (I1, I2, to In) of the detonators200; and the delay times (D1, D2, to Dn), the setting information (S1, S2, to Sn), and the initialization time (T1, T2, to Tn) for each of the detonators200. The created blasting design map may be stored in the storage part110of the central control unit100.

The blasting system10may be disposed in the blasting field (S20). That is, the central control unit100, the drilling device300, the charging device400, the worker terminal500, and the monitoring device600of the blasting system10may be disposed in the blasting field in which the blasting target is positioned. In some embodiments, the central control unit100may be placed away from the blasting target20, the drilling device300, the charging device400, and the monitoring device600may be placed close to the blasting target20, and the worker with the worker terminal500may be positioned close to the charging device400.

The drilling device300of the blasting system10may form the blasting holes30(S30). That is, the drilling device300may form the blasting holes30at the designed positions on the basis of the blasting design map.

The charging device400of the blasting system10charges the explosives40and the detonators200into the blasting holes30, and then the detonators200may be driven by the worker (S40). That is, the charging device400may charge the explosives40and the detonators200into the blasting holes30. Then, the detonators200may be driven by the worker. In some embodiments, immediately after the charging device400charges the detonator200into the blasting hole, the worker can drive the detonator200.

The central control unit100of the blasting system10may transmit relevant setting data to the detonators200(S50). That is, when the detonators200are driven by the worker, the detonators200may transmit the register request RR to the detonator setting part150of the central control unit100. The detonator setting part150receiving the register request RR may match the worker positions at the time when the detonator setting part150receives the register request RR with the blasting design map, identify the detonator transmitting the register request RR, and transmit the setting data corresponding to the identified detonators to the identified detonators.

The blasting system10may prepare for the blasting (S60). That is, the blasting controller180of the central control unit100may not generate the blasting command, when at least one of the drilling device300, the charging device400, and the worker terminal500is positioned within the blasting radius BR. When at least one of the drilling device300, the charging device400, and the worker terminal500is not positioned within the blasting radius BR, the blasting controller180may complete the blasting preparation.

The blasting system10may blast the blasting target20(S70). That is, the blasting controller180may transmit the blasting command to the detonators200disposed in the blasting holes30in the blasting target20. Then, the detonators200may be exploded by the blasting command received from the blasting controller180.

FIG. 12is a flowchart showing the operating method for a blasting system according to an embodiment of the present disclosure in detail.

Referring toFIGS. 1 to 12, the transmitting the relevant setting data shown inFIG. 11will be described in detail.

The central control unit100may receive the register requests RR from the detonators200(S51). That is, the detonator setting part150of the central control unit100may receive the register requests RR from the detonators200driven by the worker through the wireless network700. At this time, the central control unit100cannot identify from which detonator transmits the register request RR.

The central control unit100may confirm a detonator closest to the worker position at the time when the detonator setting part150receives the register request RR (S52). That is, the detonator setting part150may confirm, on the basis of the worker position information TI received from the worker terminal500, the worker position at the time when the detonator setting part150receives the register request RR. Then, the detonator setting part150may confirm a detonator closest to the confirmed worker position on the basis of the blasting designed map.

The central control unit100may identify the confirmed detonator as the detonator transmitting the register request RR (S53). That is, the detonator setting part150may identify the confirmed detonator as the detonator transmitting the register request RR.

The central control unit100may transmit setting data corresponding to the identified detonator to the identified detonator (S54). That is, the detonator setting part150may extract the setting data corresponding to the detonator identified in the blasting design map, and then transmit, the relevant setting data to the identified detonator. For example, the setting data may include setting information, an initialization time, and a delay time of a detonator.

FIG. 13is a flowchart showing the operating method for a blasting system according to an embodiment of the present disclosure in detail.

Referring toFIGS. 1 to 11, and 13, the preparing for the blasting (S60) shown inFIG. 11will be described in detai1.

The central control unit100may confirm positions of the drilling device300, the charging device400, and the worker terminal500(S61). That is, the positioning part120of the central control unit100may transmit data indicating the positions of the drilling device300, the charging device400, and the worker terminal500to the blasting controller180. Accordingly, the blasting controller180may confirm the positions of the drilling device300, the charging device400, and the worker terminal500.

The central control unit100may determine whether at least one of the drilling device300, the charging device400, and the worker terminal500is positioned within the blasting radius BR (S62). That is, the blasting controller180may determine whether at least one of the drilling device300, the charging device400, and the worker terminal500is within the blasting radius BR included in the blasting design map.

The central control unit100may perform the step S61again, when at least one of the drilling device300, the charging device400, and the worker terminal500is positioned within the blasting radius BR (YES in S63). That is, as a result of the determination, when at least one of the drilling device300, the charging device400, and the worker terminal500is positioned within the blasting radius BR, the blasting controller180may not generate the blasting command. Then, the blasting controller180may perform again the confirming the positions of the drilling device300, the charging device400, and the worker terminal500.

When at least one of the drilling device300, the charging device400, and the worker terminal500is not positioned within the blasting radius BR (NO in S63), the central control unit100may complete the blasting preparation (S64). That is, as the result of the determination, when at least one of the drilling device300, the charging device400, and the worker terminal500is not positioned within the blasting radius BR, the blasting controller150may complete the blasting preparation, and may initiate the blasting.

As described above, the blasting system and the operating method for the same according to embodiments of the present disclosure can automatically connect the detonator to the central control unit.

Further, the blasting system and the operating method for the same according to embodiments of the present disclosure can improve the worker convenience of the blasting work.

Although the exemplary embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art or those having ordinary knowledge in the art will appreciate that various modifications, additions and substitutions are possible without departing from the scope and spirit of the present disclosure as disclosed in the accompanying claims.

Therefore, the technical scope of the present disclosure is not limited to the exemplary embodiments described herein, but should be determined on the basis of the claims.