JP2018021743A - Explosive holding plate, loading explosive unit, and process of manufacture of loading explosive unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an explosive loading time when an explosive is loaded in a blast hole at a base rock and the like to be shortened, enable work efficiency to be improved, enable both cost and construction period to be reduced and further enable an explosive to be easily arranged at an arbitrary position of the blast hole.SOLUTION: This invention provides an explosive holding plate that is constituted in such a way that there are provided a long thin-plate-like plate member 11 made of paper or wooden material that can be folded and an adhesive agent 12 provided at a fixing surface 11a at one surface of the plate member 11 so as to fix dynamite 2 inserted into a blast hole 3 punched at the base rock, the plate member 11 is formed into such a shape as one that can be inserted into the blast hole 3 under a state in which the dynamite 2 is fixed through the adhesive agent 12, a parallel folding line 11b is formed in a long direction X of the plate member 11, an inner corner side of the plate member 11 folded and bent along the folding line 11b is formed with a storing recess 11c where the dynamite 2 is stored and the adhesive agent 12 is provided at the storing recess 11c.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an explosive holding plate, a loading explosive unit, and a manufacturing method of a loading explosive unit used for explosives loaded in a blast hole drilled in a rock mass such as tunnel construction.

  Conventionally, dynamite in which explosives are packed into a cylindrical shape with paper or the like has been manually loaded, but such loading work has become a heavy labor, for example, by sequentially pushing explosives into the blasting hole using a long bar. . Therefore, in recent years, as shown in Patent Document 1, for example, a technique of using a hose or pipe and loading dynamite into a blast hole from a position away from the rock mass is known.

  Further, in Patent Document 2, a blasting hole is drilled using a construction machine such as a drill jumbo, and a tip of a loading pipe is inserted into the blasting hole, and a hose connected to the loading pipe An automatic device that loads compressed air from a loading machine provided at the base end toward the tip of the loading pipe and moves the dynamite along with the compressed air through the inside of the loading hose to reach the inside of the blasting hole. A drug method is disclosed.

JP-A-2005-326107 JP 9-126700 A

However, the conventional explosive loading method has the following problems.
In other words, the usual manual charge as shown in Patent Document 1 requires a large number of personnel, and the work time is long and the construction period is long.
Further, in the automatic charging system shown in Patent Document 2, a special apparatus such as a loading machine is provided for a large construction machine, and a control apparatus for automating the apparatus is also required. In addition, there is a problem that the equipment cost increases because an apparatus that can cope with the length of the blasting hole and the blasting pattern is required.
Furthermore, spacers are used when loading a plurality of explosives with a space between the blast holes, but work is troublesome and work efficiency is reduced, so there is room for improvement in that respect.

The present invention has been made in view of the above-described problems, and can reduce the charging time when charging a blast hole such as a bedrock, can improve the work efficiency, and the construction cost and construction period. It is an object of the present invention to provide an explosive holding plate, a loading explosive unit, and a manufacturing method of a loading explosive unit that can be reduced.
Another object of the present invention is to provide an explosive holding plate, a loading explosive unit, and a method of manufacturing a loading explosive unit that can easily place an explosive at an arbitrary position of a blast hole.

In order to achieve the above object, the present invention provides the following means.
An explosive holding plate according to the present invention is an explosive holding plate that contains an explosive containing dynamite inserted into a blast hole drilled in a rock, and is a foldable plate member made of a long thin sheet of paper or wood And an adhesive portion provided on one surface of the plate member for fixing the explosive, wherein the plate member is in a state where the explosive is fixed through the adhesive portion. It is characterized by being formed into a shape that can be inserted into the.

  Further, the loading explosive unit according to the present invention is a loading explosive unit in which a plurality of explosives are held along the longitudinal direction of the above-described explosive holding plate, and the plurality of explosives are interposed via the adhesive portion. It is characterized by being fixed to the plate member at intervals in the longitudinal direction.

  A method for manufacturing a loading explosive unit according to the present invention is a method for manufacturing a loading explosive unit in which a plurality of explosives are held on the above-described explosive holding plate, and is made of a long thin plate-like paper material or wood. A step of forming a plate member, a step of providing the bonding portion on one surface of the plate member, a step of fixing the plurality of explosives to the bonding portion at intervals in the longitudinal direction of the plate member, It is characterized by having.

According to the present invention, a loading unit (loading explosive unit) can be easily manufactured in a short time with a simple structure in which an explosive is fixed through an adhesive portion provided on a plate member. And since the manufactured explosive unit for loading is formed in a shape that can be inserted into the blast hole, it is possible to prevent problems such as being caught in the blast hole or being clogged and unable to be loaded when loaded into the blast hole. The explosive unit for loading can be easily pushed into the blasting hole and loaded. Therefore, there is no need to increase the diameter of the blast hole, which is economical.
Moreover, in this invention, since the plate member is formed from the elongate thin-plate-shaped paper material or wood, it can be bent easily and can change a shape. That is, the explosive holding plate of the present invention can be freely set to have a cross-sectional shape such as a V shape or a trapezoidal shape according to the shape and size of the explosive using the plate member. Moreover, since the plate member is made of paper or wood, it can be adjusted by cutting to the required length according to the drilling length of the blast hole.

  In addition, as described above, it is possible to easily carry out the work of manufacturing the loading explosive unit by adhering the explosive to the explosive holding plate, so that the thin plate-shaped explosive holding portion provided with the adhesive portion is provided. The plates can be transported in a stacked state. Therefore, a large number of explosive holding plates can be loaded on a transportation facility such as a truck, so that the transportation efficiency can be improved and the cost for transportation can be reduced. Moreover, for example, even when temporarily placing it on the site where it is used, it is possible to stock the stacked explosive holding plates in an overlapped state, so that there is an advantage that the space for storage can be reduced.

  Furthermore, a plurality of explosives can be arranged at predetermined positions in the longitudinal direction of the plate member by a simple method such as fixing the explosive to an adhesive portion provided on the plate member. Therefore, since a space is provided between the explosives without providing a member such as a spacer, and can be easily fixed in an arbitrary position in a short time, the work related to the dispersion charge can be performed efficiently.

  In the explosive holding plate according to the present invention, the plate member is formed with a fold portion parallel to the longitudinal direction of the plate member, and the inner side of the plate member bent along the fold portion is It is preferable that an accommodating recess for accommodating the explosive is formed and the adhesive portion is provided in the accommodating recess.

  In this case, an accommodation recess extending along the longitudinal direction is formed by folding along the crease, and a plurality of explosives can be held in the accommodation recess via the adhesive. Therefore, it is possible to prevent the held explosive from changing its position with respect to the plate member and shifting or dropping out.

  In the explosive holding plate according to the present invention, it is preferable that the adhesive portion is provided on at least two surfaces of the plurality of partition plates of the plate member partitioned by the fold portion.

  In this case, since the explosive is fixed to the plurality of partition plates by the adhesive portion, the explosive can be more reliably fixed.

  Further, the explosive holding plate according to the present invention may be characterized in that a weakened portion is formed in the fold portion.

  In this case, it becomes easy to bend | fold by a weakening part, and the effort concerning the operation | work which arranges an explosive in an accommodation recessed part and adheres can be reduced.

  Further, in the explosive holding plate according to the present invention, the plate member is an arc plate-like plate that is curved in an arc shape when viewed from the longitudinal direction of the plate member, and the inner periphery of the arc plate-like plate It is preferable that an accommodation recess for accommodating the explosive is formed on the side, and the adhesive portion is provided in the accommodation recess.

  In this case, since the plurality of explosives can be held in the housing concave portion curved in an arc shape via the adhesive portion, the position of the held explosive is changed with respect to the plate member. Can be prevented from slipping out or falling off.

  In the explosive holding plate according to the present invention, the plate member may include a holding piece that covers at least a part of the opening of the receiving recess and holds the outer periphery of the explosive stored in the receiving recess. preferable.

  In this case, since the outer periphery of the explosive accommodated in the accommodating recess can be pressed by the holding piece, the explosive is not transferred during transportation with a plurality of explosives fixed to the explosive holding plate or when loading into the blast hole. It is possible to prevent the explosive holding plate from being detached, or the position from being shifted due to a change in posture.

  In the explosive holding plate according to the present invention, it is preferable that a scale is displayed on the one surface of the plate member along the longitudinal direction of the plate member.

  In this case, the scale can be used for the interval of the distributed charge, and when a plurality of explosives are fixed to the explosive holding plate at intervals, a predetermined space is not measured without measuring the space between the explosives. It is possible to fix the gaps with a certain distance and to disperse charge easily.

  The explosive holding plate according to the present invention is characterized in that the adhesive portion is made of an adhesive tape, and a peelable protective sheet is attached to the adhesive surface of the adhesive tape with the explosive. Also good.

  In this case, when the explosive is fixed to the plate member, the protective sheet can be peeled off and the explosive can be fixed to the adhesive surface of the adhesive tape. Thus, since the adhesive surface of the adhesive tape is protected by the protective sheet, it is possible to prevent the adhesion force from being reduced due to dust adhering to the adhesive surface before the explosive is fixed.

  In the loading explosive unit according to the present invention, the plurality of explosives arranged in the longitudinal direction may be held by the plurality of plate members.

  According to the loading explosive unit of the present invention, for example, a loading explosive unit in which an explosive is sandwiched between two thin plate members can be provided. In this case, the work of bending the plate member is not necessary, so that the work efficiency can be improved.

According to the method for manufacturing an explosive holding plate, a loading explosive unit, and a loading explosive unit of the present invention, it is possible to shorten the charging time when charging a blast hole such as a bedrock and to improve work efficiency. The construction cost and construction period can be reduced.
Moreover, according to this invention, there exists an effect which can arrange | position an explosive easily in the arbitrary positions of a blasting hole.

It is the side view of the explosive unit for loading by the 1st Embodiment of this invention, Comprising: It is the figure seen from the opening side of the accommodation recessed part. FIG. 2 is a cross-sectional view taken along line AA shown in FIG. 1 and is a vertical cross-sectional view of a portion to which dynamite is fixed in a loading explosive unit. It is a figure for demonstrating the manufacture procedure of the explosive unit for loading, Comprising: (a)-(c) is the top view seen from the top, (d) is a fragmentary perspective view. It is a longitudinal cross-sectional view of the explosive unit for loading by 2nd Embodiment, Comprising: It is a figure corresponding to FIG. It is a longitudinal cross-sectional view of the explosive unit for loading by 3rd Embodiment, Comprising: It is a figure corresponding to FIG. It is a longitudinal cross-sectional view of the explosive unit for loading by 4th Embodiment, Comprising: It is a figure corresponding to FIG. It is a longitudinal cross-sectional view of the explosive unit for loading by 5th Embodiment, Comprising: It is a figure corresponding to FIG.

  Hereinafter, an explosive holding plate, a loading explosive unit, and a method for manufacturing a loading explosive unit according to embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the explosive holding plate 1 according to the present embodiment accommodates dynamite 2 (explosive) in a state in which the explosive holding plate 1 is held. It is used when loading into the perforated blast hole 3.

  Here, as the dynamite 2 held on the explosive holding plate 1 in the present embodiment, a cylindrical parent dynamite (hereinafter abbreviated as “parent die 2A”) to which one end of the lead wire 2a is connected, In order to increase the blasting power, an increased dynamite (hereinafter abbreviated as “increased die 2B”) made of, for example, a bulk explosive is used. Then, in the state where one parent die 2A is loaded in the deepest portion 3b of the blast hole 3 and a plurality of additional dies 2B, 2B,... (Not shown) is loaded.

As shown in FIGS. 1 and 2, the explosive holding plate 1 is provided on a plate member 11 made of a long thin plate-like paper material or wood, and one surface (adhering surface 11 a) of the plate member 11, and the dynamite 2 And an adhesive 12 (adhesive portion) for fixing the adhesive. The explosive holding plate 1 is formed in a shape that can be inserted into the blast hole 3 in a state where the dynamite 2 is fixed via the adhesive 12.
Here, the longitudinal direction of the plate member 11 is referred to as the longitudinal direction X, and the plate surface direction orthogonal to the longitudinal direction X is referred to as the width direction D.

  The plate member 11 is formed with two crease portions 11b and 11b parallel to the longitudinal direction X, and is bent along the crease portion 11b so as to have a substantially trapezoidal shape when viewed from the longitudinal direction X. Has been. That is, the crease portions 11b and 11b are provided at positions that divide the plate member 11 so as to be divided into approximately three equal parts in the width direction D. The plate member 11 partitioned by the fold portions 11b and 11b includes a bottom wall 11A (partition plate) and side walls 11B and 11B (partition plates) located on both sides of the bottom wall 11A, and the side walls 11B and 11B. On the inner corner side, which is bent in the direction in which the two are adjacent to each other, an accommodation recess 11c in which the dynamite 2 is accommodated is formed.

  As the plate member 11, for example, a member such as cardboard, corrugated cardboard, or a thin plate-like wood board (plywood board) can be employed. In the fold portions 11b and 11b along the long direction X, weakened portions 13 such as perforations, slits, and thin portions are formed, for example.

  Further, as shown in FIG. 3A, a scale 14 is displayed on the fixing surface 11 a of the plate member 11 with a predetermined interval along the longitudinal direction X of the plate member 11. The scale 14 may be printed directly on the fixing surface 11 a of the plate member 11, or may be a printed sheet or tape attached. The interval between the scales 14 may be a dimension determined like a ruler, may indicate the length dimension of the dynamite 2, or may indicate the position of the dynamite 2 in advance. .

As shown in FIGS. 1 and 2, the adhesive 12 is applied to the inner surfaces of the bottom wall 11A and the side wall 11B. The adhesive 12 is not applied over the entire surface of the one surface (fixed surface 11a) of the plate member 11, but intermittently at intervals according to the position where the dynamite 2 is disposed as in the present embodiment. (See FIGS. 3B and 3C). Or it is also possible to make it adhere to the linear form extended along the elongate direction X by the width dimension smaller than the dimension of the width direction D of each wall 11A of the plate member 11, 11B.
The adhesive 12 is not particularly limited, and any material can be used as long as it can be bonded to both the plate member 11 made of a paper material or a plate material and the dynamite 2.

The loading explosive unit 10 configured by holding a plurality of dynamites 2 on the explosive holding plate 1 configured as described above includes an accommodation recess formed by the bottom wall 11A and the side walls 11B and 11B of the plate member 11. A plurality of dynamites 2 are fixed to the plate member 11 with an interval in the longitudinal direction X via an adhesive 12 in 11c.
Here, as the length in the longitudinal direction X of the explosive holding plate 1 (plate member 11), for example, the drilling length of the blast hole 3 is 2.8 m to 3.0 m, and the charge is required in the range of 1.5 m. In this case, the length can be set to 1.5 m.

Next, a manufacturing method of the loading explosive unit 10 in which a plurality of dynamites 2 are held and accommodated on the explosive holding plate 1 and a construction method of loading the manufactured loading explosive unit 10 into the blast hole 3 will be described with reference to the drawings. To do.
As a method of manufacturing the explosive unit 10 for loading, first, the explosive holding plate 1 is processed. Specifically, as shown in FIG. 3 (a), a plate member 11 made of a long thin sheet of paper or wood is formed, and both sides of the plate member 11 formed in a desired length and width, or A weakened portion 13 that is parallel to the longitudinal direction X is formed on one surface. Note that the processing of the weakened portion 13 can be performed simultaneously with the formation of the plate member 11. Thereafter, as shown in FIG. 3B, the explosive holding plate 1 is processed by applying an adhesive 12 to a predetermined position of the fixing surface 11a.

  Next, as shown in FIG.3 (c), the dynamite 2 is arrange | positioned and adhere | attached with respect to the adhesive agent 12 of 11 A of bottom walls. Thereby, the several dynamite 2 is hold | maintained in the state which opened the appropriate space | interval (space S) along the elongate direction X of the plate member 11, and was fixed. As for the arrangement of the dynamite 2, the parent die 2A is arranged on the deepest part 3b side of the blast hole 3 shown in FIG. 1 in the plate member 11, and a plurality of additional dies 2B, 2B,. The

Thereafter, as shown in FIG. 3 (d), the pair of side walls 11 B and 11 B of the plate member 11 are bent toward the dynamite 2 side at the fold portion 11 b (weakening portion 13), and the side wall 11 B is interposed via the adhesive 12. Adhere to the side of the dynamite 2. As a result, one dynamite 2 is held on the explosive holding plate 1 in a state of being bonded to the bottom wall 11A and the three surfaces of the pair of side walls 11B and 11B, and the manufacture of the explosive unit 10 for loading is completed. Become.
Note that before the step of bonding the dynamite 2 to the adhesive 12, a step of bending the pair of side walls 11B and 11B to form a substantially trapezoidal shape in a cross-sectional view may be performed.

Next, an example of a construction method for loading the manufactured explosive unit 10 into the blast hole 3 in the tunnel construction will be described.
The aforementioned loading explosive unit 10 shown in FIGS. 3A to 3D is manufactured at a construction site. For example, a flat plate in which an adhesive 12 is applied to a plate member 11 as shown in FIG. By manufacturing the shape up to, for example, a factory or the like, a large number of plate-shaped explosive holding plates 1 are transported to the construction site in a stacked state and temporarily placed in a stock yard provided at the construction site. At this time, it is preferable to cover the exposed adhesive surface of the adhesive 12 with an appropriate protection means.
When dynamite 2 is loaded into the blast hole 3 at the time of blasting, a plurality of dynamites 2 are bonded and held on the flat explosive holding plate 1 as shown in FIGS. 3 (c) and 3 (d). The loaded explosive unit 10 can be manufactured.
Here, the plurality of blast holes 3 drilled in the face of the tunnel are drilled by a known drill jumbo or the like used for tunnel work.

  Subsequently, an appropriate number of loading explosive units 10 necessary for blasting are carried into the tunnel, and as shown in FIG. 1, for example, a loading pipe (not shown) or the like is inserted into the drilled blasting hole 3. Using the explosive unit 10 for loading, the parent die 2A is pushed toward the deepest part 3b side, and further, the loading operation is completed by pushing in the contents.

Next, operations of the explosive holding plate 1 having the above-described configuration, the loading explosive unit 10 and the method for manufacturing the loading explosive unit 10 will be described in detail with reference to the drawings.
In the present embodiment, as shown in FIGS. 3A to 3D, a simple structure in which the dynamite 2 is fixed through the adhesive 12 applied to the plate member 11 can be easily performed in a short time. The loading explosive unit 10 can be manufactured. As shown in FIG. 1, the manufactured loading explosive unit 10 is formed in a shape that can be inserted into the blasting hole 3, so that when it is loaded into the blasting hole 3, it is caught in the blasting hole 3, Problems such as clogging and unloading can be prevented, and the loading explosive unit 10 can be easily pushed into the blasting hole 3 and loaded. Therefore, there is no need to increase the diameter of the blast hole 3 and it is economical.

  Moreover, in this Embodiment, since the plate member 11 is formed from the elongate thin plate-shaped paper material or wood, it can be bent easily and can change a shape. That is, in the explosive holding plate 1 of the present embodiment, it is possible to freely set the trapezoidal cross-sectional shape as in the present embodiment according to the shape and size of the dynamite 2 using the plate member 11. It becomes. In addition, since the plate member 11 is made of paper or wood, it can be adjusted by cutting to the required length according to the drilling length of the blast hole 3.

Further, in the present embodiment, as described above, it is possible to easily perform the operation of manufacturing the loading explosive unit 10 by fixing the dynamite 2 to the explosive holding plate 1 on the spot. The sheet-shaped explosive holding plate 1 provided with 12 can be transported in a stacked state. Therefore, a large number of explosive holding plates 1 can be loaded on a transportation facility such as a truck, so that the transportation efficiency can be improved and the cost for transportation can be reduced.
Moreover, for example, even when temporarily placing it on the site where it is used, it is possible to stock the stacked explosive holding plates 1 in an overlapped state, so that there is an advantage that the space for storage can be reduced.
And when the blasting site is a tunnel, it is only necessary to fix the dynamite 2 to the explosive holding plate outside the mine and then carry it into the mine, so it is necessary to carry out the charge work in a poor working environment inside the mine. Thus, the work efficiency can be improved.

  Furthermore, a plurality of dynamites 2 can be arranged at predetermined positions in the longitudinal direction X of the plate member 11 by a simple method of fixing the dynamite 2 to the adhesive 12 provided on the plate member 11. Therefore, since the space S is provided between the dynamites 2 without providing a member such as a spacer and can be easily fixed in an arbitrary position in a short time, the work related to the dispersion charge can be performed efficiently.

Here, the dispersion charge in the tunnel will be described more specifically.
The blasting hole 3 is classified into centering, wiping, and peripheral holes. By performing such classification, the amount of charge according to the position of the blasting hole 3 can be adjusted, and economical blasting is possible.
That is, in the case of centering, it is generally necessary to secure a charge length of 70% or more of the drilling length of the blasting hole 3, but in order to ensure the necessary charge length as the drilling length increases. In addition, normal charging methods tend to be overloaded. Therefore, it is possible to prevent excessive charging by charging the dynamite 2 with an appropriate interval in the thin plate-like plate member 11 as in the present embodiment, which is economically excellent. Distributed charge can be realized.
Further, the charge length of the peripheral hole needs to be 50% of the drilling length of the blasting hole 3, but the normal charge tends to be excessive. Therefore, by fixing the dynamite 2 at an appropriate interval to the thin plate-like plate member 11 as in the present embodiment, the minimum explosive amount can be achieved.

  Moreover, in this Embodiment, the accommodation recessed part 11c extended along the elongate direction X is formed by bend | folding along the crease | fold part 11b, and several dynamite 2 is bonded via this adhesive 12 with respect to this accommodation recessed part 11c. Since it can hold | maintain in the accommodated state, it can suppress that the hold | maintained dynamite 2 changes a attitude | position with respect to the plate member 11, a position shifts, or falls.

In the present embodiment, since the dynamite 2 is fixed to the bottom wall 11A defined by the crease portion 11b and the pair of side walls 11B, 11B by the adhesive 12, the dynamite 2 is more reliably secured. It becomes possible to adhere to.
Moreover, since the weakened portion 13 is formed in the fold portion 11b, the weakened portion 13 makes it easy to bend, and it is possible to reduce the labor involved in placing and fixing the dynamite 2 in the housing recess 11c.

  Moreover, in this Embodiment, the scale 14 is displayed on the adhering surface 11a of the plate member 11, and this scale 14 can be utilized for the space | intervals of a dispersion charge. Therefore, when a plurality of dynamites 2 are fixed to the explosive holding plate 1 at intervals, they can be fixed at predetermined intervals without measuring the space S between the dynamites 2. It becomes possible to carry out powder medicine.

As described above, in the method for producing the explosive holding plate, the loading explosive unit, and the loading explosive unit according to the present embodiment, it is possible to shorten the charging time when charging the blast hole 3 such as a bedrock. Efficiency can be improved and construction cost and construction period can be reduced.
Moreover, according to this Embodiment, there exists an effect which can arrange | position the dynamite 2 in the arbitrary positions of the blasting hole 3 easily.

  Next, another embodiment of the method for manufacturing an explosive holding plate, a loading explosive unit, and a loading explosive unit according to the present invention will be described with reference to the accompanying drawings, but the same as the first embodiment described above or The same members and portions are denoted by the same reference numerals, and the description thereof is omitted. A configuration different from the first embodiment will be described.

(Second Embodiment)
The loading explosive unit 10A according to the second embodiment shown in FIG. 4 uses two explosive holding plates 1A and 1A, and each of the two thin plate members 11 is adhesive 12. The dynamite 2 is sandwiched between the two.
In this case, the work of bending the plate member 11 becomes unnecessary, so that the work efficiency can be improved.
In the present embodiment, two explosive holding plates 1A are provided, but three or more explosive holding plates 1A may be provided.

(Third embodiment)
As shown in FIG. 5, the explosive holding plate 1B of the third embodiment is a modified example in which the cross-sectional shape of the explosive holding plate 1 of the first embodiment described above is changed, and a fold portion 11b (weakened) The portion 13) is formed only at the center in the width direction D of the plate member 11, and is configured to be bent into a substantially V shape in a sectional view. And the adhesive agent 12 is apply | coated to each inner surface of the accommodation recessed part 11c formed of a pair of slope 11C, 11D (partition plate) divided by the crease | fold part 11b.

(Fourth embodiment)
An explosive holding plate 1 </ b> C according to the fourth embodiment shown in FIG. 6 has an arc plate-like plate 11 </ b> E in which the plate member 11 is curved in an arc shape when viewed from the longitudinal direction X. On the inner peripheral side of the arc plate 11E, an accommodation recess 11c for accommodating the dynamite 2 is formed, and an adhesive 12 is provided in the accommodation recess 11c.
In the fourth embodiment, since the plurality of dynamites 2 can be held via the adhesive 12 with respect to the housing recess 11c curved in an arc shape, the held dynamite 2 has an arc plate shape. It is possible to prevent the posture from changing with respect to the plate 11E and shifting or dropping out.

(Fifth embodiment)
Next, the explosive holding plate 1D according to the fifth embodiment shown in FIG. 7 is an opening of the accommodating recess 11c in the explosive holding plate 1 formed in a substantially trapezoidal shape in cross-sectional view according to the first embodiment described above. It is also possible to have a holding piece 15 that covers at least a part of the dynamite 2 and that holds the outer periphery of the dynamite 2 housed in the housing recess 11c. The holding piece 15 is configured such that one end 15b in the width direction D is connected to one open end of the pair of side walls 11B, and the other locking end 15c can be locked to the open inner end edge of the other side wall 11B. ing.
In this case, in a state where the dynamite 2 is housed in the housing recess 11c of the explosive holding plate 1D, the locking end 15c of the holding piece 15 is locked to the other side wall 11B, whereby the dynamite housed in the housing recess 11c. 2 can be pressed by the inner surface 15 a of the holding piece 15. For this reason, the dynamite 2 is detached from the explosive holding plate 1D during transportation in the state where a plurality of dynamites 2 are fixed to the explosive holding plate 1D or loaded into the blasting hole, or the position is shifted due to a change in posture. Can be prevented.

As mentioned above, although the embodiment of the manufacturing method of the explosive holding plate, the loading explosive unit, and the loading explosive unit according to the present invention has been described, the present invention is not limited to the above embodiment, and departs from the gist thereof. It is possible to change appropriately within the range not to be.
For example, in the present embodiment, the adhesive 12 is employed as the adhesive portion provided on the plate member 11, but the present invention is not limited to this, and an adhesive tape or the like can also be employed.
And the peelable protective sheet may be stuck on the adhesive surface with the explosive (dynamite 2) in an adhesive tape. In this case, when the explosive is fixed to the plate member, the protective sheet can be peeled off and the explosive can be fixed to the adhesive surface of the adhesive tape. Thus, since the adhesive surface of the adhesive tape is protected by the protective sheet, it is possible to prevent the adhesion force from being reduced due to dust adhering to the adhesive surface before the explosive is fixed.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1, 1A-1D Explosive holding plate 2 Dynamite 2A Parent die 2B Additional die 3 Blast hole 10, 10A Explosive unit for loading 11 Plate member 11A Bottom wall (partition plate)
11B side wall (partition plate)
11C, 11D Slope (partition plate)
11E Circular plate (plate member)
11a Adhering surface 11b Folded part 11c Housing recess 12 Adhesive (adhesive part)
13 Weakening part 14 Scale 15 Holding piece D Width direction S Space X Long direction

Claims (11)

An explosive holding plate for storing an explosive consisting of dynamite inserted into a blast hole drilled in a rock,
A foldable plate member made of long thin sheet paper or wood;
An adhesive portion provided on one surface of the plate member for fixing the explosive;
With
The explosive holding plate, wherein the plate member is formed in a shape that can be inserted into the blasting hole in a state where the explosive is fixed through the adhesive portion. The plate member is formed with a fold portion parallel to the longitudinal direction of the plate member,
On the inner corner side of the plate member bent along the crease portion, an accommodating recess for accommodating the explosive is formed,
The explosive holding plate according to claim 1, wherein the adhesive portion is provided in the housing recess.   3. The explosive holding plate according to claim 2, wherein the adhesive portion is provided on at least two surfaces of the plurality of partition plates of the plate member partitioned by the crease portion.   The explosive holding plate according to claim 2, wherein a weakened portion is formed in the fold portion. The plate member is an arc plate plate that is curved in an arc shape in a cross-sectional view as viewed from the longitudinal direction of the plate member,
On the inner peripheral side of the arc plate-like plate, an accommodating recess for accommodating the explosive is formed,
The explosive holding plate according to claim 1, wherein the adhesive portion is provided in the housing recess.   The said plate member has a holding piece which covers the at least one part of opening of the said accommodation recessed part, and hold | maintains the outer periphery of the said explosive accommodated in the said accommodation recessed part. The explosive holding plate according to item 1.   The explosive holding plate according to any one of claims 1 to 6, wherein a scale is displayed on the one surface of the plate member along the longitudinal direction of the plate member. The adhesive portion is made of an adhesive tape,
The explosive holding plate according to any one of claims 1 to 7, wherein a peelable protective sheet is attached to an adhesive surface of the adhesive tape with the explosive. An explosive unit for loading in which a plurality of explosives are held along the longitudinal direction of the explosive holding plate according to any one of claims 1 to 8,
The explosive unit for loading, wherein the plurality of explosives are fixed to the plate member with an interval in the longitudinal direction through the adhesive portion.   The loading explosive unit according to claim 9, wherein the plurality of explosives arranged in the longitudinal direction are held by the plurality of plate members. A method for manufacturing a loading explosive unit in which a plurality of explosives are held on the explosive holding plate according to any one of claims 1 to 8,
Forming a plate member made of a long thin plate-like paper material or wood;
Providing the adhesive portion on one surface of the plate member;
Fixing the plurality of explosives at an interval in the longitudinal direction of the plate member to the adhesive portion;
A method for manufacturing a loading explosive unit, comprising:

Images