Explosive loading pipe and explosive loading method

Abstract

To provide an explosive loading pipe allowing not only safety upon loading explosive within a loading hole of an objected to be blasted to be enhanced but workability to be enhanced, and further allowing the explosive to be securely loaded in the loading hole.SOLUTION: A explosive loading pipe 10 is provided with an outer cylinder 20, an insertion member 30, and a cylindrical bag body 80 with a closed tip end part and an opened base end part. The bag body 80 is covered so as to cover the outer cylinder 20 from its tip, to allow the bag 80 and explosive 61 to remain in a loading hole 51 formed in an object to be blasted through moving the insertion member 30 to a tip side with respect to the outer cylinder 20 to push out the explosive 61 loaded in the tip part of the outer cylinder 20 out of the outer cylinder 20.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pipe for loading explosives and a method for loading explosives. [Background technology]

[0002] When blasting an object to be blasted, such as at the face of a mountain tunnel construction project, explosives are loaded into the loading holes formed in the object to be blasted. In places where the ground is exposed, such as the tunnel face, there is a risk of falling rocks, so it is desirable for workers to work away from the face. Therefore, there is a method in which a parent die (an explosive with a detonator attached) is fitted to the tip of a pipe, and an operator inserts the tip of the pipe into a loading hole from a position away from the face, and by feeding air into the pipe, the parent die is pushed out of the pipe and loaded into the loading hole (see, for example, Patent Document 1). Furthermore, after the parent die is loaded into the loading hole, a powder explosive (anhydrous explosive) is fed into the loading hole through the pipe. In the above-mentioned explosive loading method, it is necessary to switch between a mechanism for feeding air into the pipe and a mechanism for feeding powder explosive into the pipe, which makes the structure and operation of the device complicated. Also, there are cases where the parent die fitted to the tip of the pipe cannot be pushed out by air. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4714653 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to solve the above-mentioned problems, increase safety when loading explosives into the loading hole of an object to be blasted, improve work efficiency, and provide an explosive loading pipe and an explosive loading method that can reliably load explosives into the loading hole. [Means for solving the problem]

[0005] In order to solve the above problems, the first invention is an explosive loading pipe, comprising an insertion member and a cylindrical bag body with a closed tip and an open base end, the bag body covers the insertion member from the tip of the insertion member, and an explosive is interposed between the tip of the bag body on the inner circumferential surface side and the tip of the insertion member. and the outer cylinder By pulling it out, it is possible to leave the bag and the explosive in the filling hole formed in the blasting object.

[0006] Also, The explosive loading pipe further includes an outer tube, the insertion member is inserted into the outer tube from the base end opening of the outer tube, and the bag body is coated so as to cover the tip of the outer tube, and by moving the insertion member toward the tip side relative to the outer tube, the explosive fitted in the tip portion of the outer tube can be pushed out of the outer tube.

[0007] moreover, Explosives loading pipe teeth A stopper member is provided on the outer cylinder, and the insertion member is positioned relative to the outer cylinder by pressing the stopper member against the insertion member. It has been . This configuration By This prevents the insertion member from moving unintentionally inside the outer tube before the tip of the explosive loading pipe is inserted into the loading hole, causing the insertion member to push the explosive out of the outer tube.

[0008] In order to solve the above problem, the second invention provides a catheter that includes an outer tube, an insertion member that is inserted into the outer tube from a base end opening of the outer tube, a cylindrical bag body that is closed at a tip end and open at a base end, A stopper member provided on the outer cylinder; In the explosive loading method of the present invention, first, an explosive is fitted into the tip of the outer cylinder. Next, an explosive is inserted into a loading hole formed in the object to be blasted. The insertion member is inserted while being positioned by the stopper member.The tip of the outer cylinder is inserted. Next, the insertion member is moved toward the tip side with respect to the outer cylinder, and the explosive is pushed out of the outer cylinder by the insertion member, and the explosive is loaded into the loading hole. Then, the explosive loading pipe is removed from the loading hole. The outer cylinder and the insert member Pull out.

[0009] The explosive loading pipe and explosive loading method of the present invention can load explosives into the loading hole even from a position away from the object to be blasted, thereby improving the safety of the work. In addition, in the explosives loading pipe and explosives loading method of the present invention, by placing multiple explosives in the outer cylinder, multiple explosives can be sent into the loading hole at once, thereby improving work efficiency. Furthermore, the explosive loading pipe and explosive loading method of the present invention are configured so that the explosive is pushed out by the insertion member, so that the explosive can be reliably loaded into the loading hole.

[0010] In the case where the insert member of the explosive loading pipe is formed into a cylindrical shape, after the explosive is placed in the loading hole, the powder explosive is sent into the loading hole through the insert member, and the explosive loading pipe is pulled out from the loading hole. In this way, the powder explosive such as anhydrous explosive can be safely and efficiently loaded into the loading hole. Effect of the Invention

[0011] In the explosives loading pipe and explosives loading method of the present invention, the explosives can be loaded into the loading hole even from a position away from the blasting object, thereby improving the safety and efficiency of the work. In addition, in the explosives loading pipe and explosives loading method of the present invention, the explosives can be pushed out by the insertion member, so that the explosives can be reliably loaded into the loading hole. Furthermore, the explosives can be loaded into the loading hole through a bag body, so that the explosives can be prevented from becoming hydrated by spring water or groundwater. [Brief description of the drawings]

[0012] [Figure 1]1 is a side view showing a state in which an explosive loading pipe is inserted into a loading hole in the explosive loading method according to the first embodiment of the present invention. FIG. [Diagram 2] 1 is a side cross-sectional view showing an explosives loading pipe according to a first embodiment of the present invention. [Diagram 3] 1 is a side view showing a state in which a parent die is pushed out from an outer cylinder by an insertion member in the explosive loading method according to the first embodiment of the present invention. FIG. [Figure 4] 1 is a side view showing a state in which powder explosive is discharged from an insertion member in the explosive loading method according to the first embodiment of the present invention. FIG. [Diagram 5] FIG. 13 is a side cross-sectional view showing a modified example of the explosive loading pipe according to the first embodiment of the present invention, in which a stopper mechanism for the insertion member is provided. [Figure 6] FIG. 13 is a side cross-sectional view showing a modified example of the explosive loading pipe according to the first embodiment of the present invention, in which an explosive holding mechanism is provided. [Figure 7] 11 is a side view showing a state in which an explosive loading pipe is inserted into a loading hole in the explosive loading method according to the second embodiment of the present invention. FIG. [Figure 8] 8 is a side view showing the state in which the parent die, the additional die, and the filler are pushed out of the outer cylinder by the insertion member in the explosive loading method according to the second embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of each embodiment, the same components are denoted by the same reference numerals, and duplicate descriptions will be omitted. In this embodiment, an example will be described in which the present invention is applied to an explosives loading pipe and an explosives loading method for loading explosives into a loading hole formed in a blasting object at the face of a mountain tunnel construction project. [First embodiment] As shown in FIG. 1, the blasting target 50 in the first embodiment is a tunnel face (ground in the vicinity of the face), and a charging hole 51 is opened in the face. The loading hole 51 is a cylindrical horizontal hole with a bottom formed in the blasting target 50. In the loading hole 51 of the first embodiment, as shown in Fig. 4, an explosive 61 (dynamite) and a powder explosive 62 (ampho explosive) are loaded. A detonator 63 is attached to the explosive 61, and a linear member 70 for detonation, such as a fuse or detonation cord, connected to the detonator 63 extends to the outside from the opening of the loading hole 51. The explosive 61 and the powder explosive 62 can be detonated by igniting the linear member 70 with an igniter. In addition, the present invention does not limit the configuration of the blasting object or the explosive.

[0014] The explosive loading pipe 10 is a rod-shaped member for loading an explosive 61 and a powder explosive 62 into a loading hole 51 from a position away from an object to be blasted 50 (see FIG. 1). As shown in FIG. 2, the explosive loading pipe 10 comprises an outer tube 20, an insertion member 30 inserted into the outer tube 20, and a cylindrical bag body 80 having a closed tip end and an open base end. The outer cylinder 20 is a cylindrical member made of resin or carbon resin. It is preferable that the total length of the outer cylinder 20 is 1 m or more. The inner diameter of the outer cylinder 20 is set so that the explosive 61 can be fitted and held therein. The insertion member 30 is a cylindrical member made of resin and inserted into the outer cylinder 20 from the base end opening of the outer cylinder 20. The insertion member 30 is movable in the axial direction relative to the outer cylinder 20. A gap is formed between the outer peripheral surface of the insertion member 30 and the inner peripheral surface of the outer cylinder 20. The base end of the insertion member 30 protrudes from the base end opening of the outer cylinder 20 and is connected to a supply device for powder explosive 62 (see FIG. 4). Then, as shown in FIG. 4, the powder explosive 62 supplied from the supply device to the base end of the insertion member 30 is discharged from the tip end of the insertion member 30. The bag body 80 is a cylindrical polyethylene bag with a closed tip end and an open base end, but the material and shape are not limited as long as they are flexible and stretchable.

[0015] Next, an explosives loading method using the explosives loading pipe 10 of the first embodiment will be described. First, as shown in Fig. 2, an explosive 61 is fitted into the tip of the outer cylinder 20. At this time, a linear member 70 connected to a detonator 63 of the explosive 61 is inserted into the outer cylinder 20 from the tip opening of the outer cylinder 20, guided to the base end opening of the outer cylinder 20 through a gap between the outer cylinder 20 and the insertion member 30, and drawn out from the base end opening (the linear member 70 may be wired to the base end side of the outer cylinder 20 along the outer surface of the outer cylinder 20). The bag 80 is coated so as to cover the tip of the outer cylinder 20 including the explosive 61. 1, at a position away from the blasting target 50, the worker grasps the outer cylinder 20 and inserts the tip of the outer cylinder 20 covered with the bag body 80 into the loading hole 51. As a result, the explosive 61 is placed in the loading hole 51. 3, the operator directly grasps the outer cylinder 20 with one hand (or grasps the outer cylinder 20 via the covered bag body 80), grasps the insertion member 30 with the other hand, and moves the insertion member 30 toward the tip side with respect to the outer cylinder 20. As a result, the explosive 61 is pushed out from the outer cylinder 20 into the bag body 80 by the insertion member 30, and the explosive 61 is loaded into the loading hole 51 through the bag body 80. Furthermore, after placing the explosive 61 in the loading hole 51 via the bag body 80, as shown in Fig. 4, the explosive loading pipe 10 is pulled out from the loading hole 51 while the powder explosive 62 is sent into the loading hole 51 through the insert member 30. As a result, the explosive 61 and the powder explosive 62 are loaded into the loading hole 51 via the bag body 80. When a filler (not shown) is loaded closer to the opening of the loading hole 51 than the powder explosive 62, the filler is fitted into the tip of the outer tube 20 of the explosive loading pipe 10, and the tip of the outer tube 20 is inserted into the loading hole 51. Then, the filler can be pushed out of the outer tube 20 by the inserting member 30 and loaded into the loading hole 51. In this case, it is preferable to interpose a bag 80 loaded together with the explosive 61, etc., in the loading hole 51 and load the filler into the bag 80.

[0016] In addition, by using the bag body 80 in combination, the outer cylinder 20 becomes unnecessary, and the bag body 80 can be used as a substitute for the outer cylinder 20. That is, the bag body 80 covers the insert member 30 so as to cover the tip of the insert member 30, and the explosive 61 is interposed between the inner peripheral surface side tip of the bag body 80 and the tip of the insert member 30, so that the operator holds the insert member 30 through the covered bag body 80 with one hand, holds the insert member 30 with the other hand, and moves the insert member 30 toward the tip side relative to the bag body 80. As a result, the explosive 61 is pushed out into the bag body 80 by the insert member 30, and the explosive 61 is loaded into the loading hole 51 through the bag body 80. Furthermore, after the explosive 61 is placed in the loading hole 51 through the bag body 80, the explosive loading pipe 10 is pulled out from the loading hole 51 while the powder explosive 62 is sent into the loading hole 51 through the insert member 30. As a result, the explosive 61 and the powder explosive 62 are loaded into the loading hole 51 via the bag 80 .

[0017] In the explosives loading pipe 10 and explosives loading method of the first embodiment described above, as shown in Figure 4, the explosives 61 and powdered explosives 62 can be loaded into the loading hole 51 from a position away from the blasting object 50, avoiding the risk of falling rocks on the face of the rocks, thereby improving the safety of the work (see Figure 1). In the explosive loading pipe 10 and the explosive loading method of the first embodiment, as shown in FIG. 3, the explosive 61 is directly pushed out by the insertion member 30, so that the explosive 61 can be reliably loaded into the loading hole 51. Furthermore, by using the bag body 80 in combination, the explosive 61 or powder explosive 62 can be loaded into the loading hole 51 via the bag body 80 even in applications where spring water or groundwater is a concern, so that the explosive 61 or powder explosive 62 can be prevented from coming into contact with water.

[0018] Although the first embodiment of the present invention has been described above, the present invention is not limited to the first embodiment, and can be appropriately modified without departing from the spirit of the present invention. 5 (bag body 80 is not shown), a stopper member 41 may be provided for positioning the insertion member 30 with respect to the outer tube 20. The stopper member 41 is a bolt screwed into a screw hole formed in the outer tube 20. Then, the stopper member 41 is fastened into the screw hole and the tip of the stopper member 41 is pressed against the outer peripheral surface of the insertion member 30, whereby the insertion member 30 can be positioned with respect to the outer tube 20. This configuration prevents the insertion member 30 from moving unintentionally inside the outer tube 20 before the tip of the explosive loading pipe 10 is inserted into the loading hole 51, thereby preventing the insertion member 30 from pushing the explosive 61 out of the outer tube 20. The configuration of the stopper member is not limited. For example, a part of the wall of the outer tube 20 is used as the stopper member, and the stopper member is configured to bend inward. Then, by pushing the stopper member inward with a cylinder or the like provided on the outer circumferential surface of the outer tube, the stopper member can be pressed against the outer circumferential surface of the insertion member 30, and the insertion member 30 can be positioned relative to the outer tube 20.

[0019] 6 (bag body 80 not shown), a plurality of elastic members 46 may be attached to the inner peripheral surface of the tip portion of the outer tube 20. The elastic member 46 shown in Fig. 6 is a leaf spring made by bending a metal plate, but a rubber or resin block body may also be attached to the inner peripheral surface of the outer tube 20. In this configuration, the elastic member 46 is sandwiched between the inner surface of the outer tube 20 and the outer surface of the explosive 61, thereby securely holding the explosive 61 against the tip of the outer tube 20, thereby preventing the explosive 61 from coming off the outer tube 20 before the tip of the explosive loading pipe 10 is inserted into the loading hole 51.

[0020] [Second embodiment] Next, an explosives loading method according to a second embodiment will be described. The explosive loading pipe 10 used in the explosive loading method of the second embodiment has the same configuration as the explosive loading pipe 10 of the first embodiment (see FIG. 2), as shown in FIG. 7 (bag body 80 not shown). The explosive loading method of the second embodiment differs from the explosive loading method of the first embodiment in that a parent die 65, an additional die 66 and a filler 67 are loaded into the loading hole 51.

[0021] In the explosive loading method of the second embodiment, a parent die 65 (an explosive connected to a detonator 68 and a linear member 70), a plurality of additional dies 66, and a filler 67 are fitted into the tip of the outer cylinder 20. At this time, the parent die 65, the plurality of additional dies 66, and the filler 67 are arranged in this order from the tip side of the outer cylinder 20 to the base end side. Thereafter, at a position away from the blasting target 50, the worker inserts the tip of the outer cylinder 20 into the loading hole 51. As a result, the parent die 65, the multiple additional dies 66, and the filler 67 are placed in the loading hole 51. Next, the operator holds the outer tube 20 with one hand and the insertion member 30 with the other hand, and moves the insertion member 30 toward the tip side with respect to the outer tube 20, as shown in Fig. 8 (bag body 80 is not shown). The insertion member 30 pushes the parent die 65, the additional die 66, and the filling 67 out of the outer tube 20, while pulling the outer tube 20 out of the loading hole 51. In this way, the parent die 65, the additional die 66, and the filling 67 are loaded into the loading hole 51, and the insertion member 30 is also pulled out of the loading hole 51.

[0022] In the second embodiment of the explosives loading pipe 10 and explosives loading method described above, as shown in Figure 8, the main die 65, multiple additional dies 66 and filler 67 can be loaded into the loading hole 51 from a position away from the blasting object 50, avoiding the risk of falling rocks on the face, thereby improving the safety of the work. In the second embodiment of the explosives loading pipe 10 and explosives loading method, the parent die 65, the multiple additional dies 66 and the filler 67 are directly pushed out by the insertion member 30, so that the parent die 65, the multiple additional dies 66 and the filler 67 can be reliably loaded into the loading hole 51.

[0023] Although the second embodiment of the present invention has been described above, the present invention is not limited to the second embodiment, and similarly to the first embodiment, appropriate modifications can be made without departing from the spirit of the present invention. For example, a bag body 80 may be used in combination, and the insertion member 30 may be a rod-shaped member without a center hole. [Explanation of symbols]

[0024] 10 Explosives Loading Pipe 20 Outer cylinder 30 Insertion member 41 Stopper member 46 Elastic Members 50 Blasting Objects 51 Loading hole 61 Explosives 62 Powder explosives 63 Detonator 65 Parent Die (Explosive) 66 Increase Die 67 Filling 68 Detonator 70 Linear members 80 Bag body

Claims

1. An insert member; A cylindrical bag body having a closed tip end and an open base end; An outer cylinder, A stopper member provided on the outer cylinder, The insertion member is inserted into the outer cylinder from a base end opening of the outer cylinder, The stopper member is pressed against the insertion member to position the insertion member relative to the outer cylinder, The outer cylinder is covered by the bag body so as to cover the tip thereof, An explosive is interposed between the inner peripheral surface side tip of the bag body and the tip of the insertion member, By moving the insertion member toward the tip side with respect to the outer cylinder, an explosive fitted in the tip portion of the outer cylinder can be pushed out from the outer cylinder, An explosive loading pipe, characterized in that by pulling out the insertion member and the outer tube, the bag body and the explosive can be left behind in a filling hole formed in an object to be blasted.

2. The insertion member is formed in a cylindrical shape, 2. The explosive loading pipe according to claim 1, wherein powder explosive can be delivered to the tip side through the insertion member.

3. An explosive loading method using an explosive loading pipe including an outer cylinder, an insertion member inserted into the outer cylinder from a base end opening of the outer cylinder, a cylindrical bag body having a closed tip end and an open base end, and a stopper member provided on the outer cylinder, fitting an explosive into the tip of the outer cylinder; A step of inserting a tip end of the outer cylinder into which the insertion member is inserted while being positioned by the stopper member into a loading hole formed in an object to be blasted; moving the insertion member toward the tip side relative to the outer cylinder, and pushing the explosive out of the outer cylinder with the insertion member to load the explosive into the loading hole; and withdrawing the outer cylinder and the insertion member of the explosive loading pipe from the loading hole.

4. The insertion member is formed in a cylindrical shape, After placing the explosive charge in the loading hole, Delivering powder explosive into the loading hole through the insert member; 4. The explosive loading method according to claim 3, wherein the outer cylinder and the insertion member of the explosive loading pipe are pulled out from the loading hole.

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