CN118088103A - Blasting hole sealing device - Google Patents

Abstract

The invention belongs to the technical field of auxiliary equipment for coal mining, and particularly discloses a blasting hole sealing device. The blasting hole sealing device comprises a liquid injection pipe and a first expander, wherein the liquid injection pipe is provided with a first through hole. The first expander comprises an expansion pipe and a gear shaping piece, wherein the expansion pipe is arranged outside the liquid injection pipe, a first transfusion cavity is formed between the expansion pipe and the first liquid injection pipe, the expansion pipe expands when high-pressure liquid is input into the first transfusion cavity, the gear shaping piece is arranged on the outer wall of the expansion pipe, and the gear shaping piece is used for being inserted into the inner wall of a drilled hole when the expansion pipe expands. The invention can be tightly attached to the inner wall of the drilled hole, and improves the reliability of plugging the drilled hole.

Description

Blasting hole sealing device

Technical Field

The invention belongs to the technical field of auxiliary equipment for coal mining, and particularly relates to a blasting hole sealing device.

Background

In the mining process, deep hole blasting processes such as roof cutting and pressure relief, coal seam presplitting and permeability improvement are often adopted, but the blasting process is complex, and especially the hole sealing difficulty is high. In the related art, an expandable hole packer is installed in a drill hole, high-pressure liquid is injected into the expandable hole packer, so that the expandable hole packer is expanded to press the inner wall of the drill hole, the high-pressure liquid in the expandable hole packer is discharged after blasting is finished, the expandable hole packer is relieved, the expandable hole packer is separated from the inner wall of the drill hole, and then the expandable hole packer is taken out. However, the outer wall of the expandable hole packer in the related technology is smooth, and the reliability of plugging the drilling holes is low.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides a blasting slot hole device which can be tightly attached to the inner wall of a drilled hole, and the reliability of plugging the drilled hole is improved.

The blasting hole sealing device of the embodiment of the invention comprises: the liquid injection pipe is provided with a first through hole; the expansion device comprises a first expansion device, wherein the first expansion device comprises an expansion pipe and a gear shaping piece, the expansion pipe is arranged outside the liquid injection pipe, a first transfusion cavity is formed between the expansion pipe and the first liquid injection pipe, the expansion pipe expands when high-pressure liquid is input into the first transfusion cavity, the gear shaping piece is arranged on the outer wall of the expansion pipe, and the gear shaping piece is used for being inserted into the inner wall of a drilled hole when the expansion pipe expands.

When the explosion hole sealing device in the embodiment is used for explosion, explosive is filled in a drill hole, a lead is led out of the drill hole, flame retardant materials are filled in the drill hole, the explosive is compacted, the lead is penetrated from one end of a first through hole and led out from the other end of the first through hole, then the explosion hole sealing device is filled in the drill hole, high-pressure liquid is input into a first infusion cavity, so that an expansion pipe is expanded, the expansion pipe can be attached to the inner wall of the drill hole, meanwhile, the expansion pipe drives a gear shaping piece to be inserted into the inner wall of the drill hole, the connection reliability of the first expander and the wall of the drill hole is further improved, the plugging effect is better, meanwhile, the hole sealing liquid can be conveyed to the bottom of the drill hole through the first through hole, the impact force of the explosion is buffered during the explosion, the explosion safety is improved, the high-pressure liquid can be discharged from the first infusion cavity after the explosion is completed, and finally the explosion hole sealing device is taken out from the drill hole.

In this embodiment, the expansion pipe includes: the support tube body is arranged outside the first liquid injection tube; the expansion elastic pieces are semicircular, are arranged at one end of the supporting tube body adjacent to the bottom of the drilled hole, are distributed along the circumferential direction of the supporting tube body, and are provided with the gear shaping pieces on the outer wall of each expansion elastic piece; the elastic membrane is arranged between two adjacent expansion elastic sheets, so that a plurality of expansion elastic sheets and the elastic membrane are enclosed to form a circular tube shape.

In this embodiment, the first expander further includes a bag belt disposed outside the expansion dome, and the bag belt is located between the gear shaping member and the support tube body.

In this embodiment, the outer wall of the expansion spring is provided with a groove, and the bag belt is disposed in the groove.

In this embodiment, the gear shaping piece includes sleeve and gear shaping, the sleeve cover is established on the inflation shell fragment, the telescopic outer wall is provided with a plurality of the gear shaping, the tooth point of gear shaping is to deviating from the direction slope setting at the bottom of the drilling hole, just the gear shaping orientation one side at the bottom of the drilling hole the hole bottom of drilling is the arc protruding and establishes.

In this embodiment, the blasting hole sealing device further includes a second expander, the second expander is disposed outside the liquid injection pipe, and the second expander is located at one end of the first expander, which is away from the bottom of the drilling hole, a second transfusion cavity is formed between the second expander and the liquid injection pipe, and the second transfusion cavity is communicated with the first transfusion cavity.

In this embodiment, the second expander includes an expansion body and a connecting member, the connecting members are disposed at both ends of the expansion body, and the second expander is connected to the expansion pipe adjacent to the connecting member of the first expander.

In this embodiment, a plurality of second expanders are provided, and the plurality of second expanders are sequentially connected along the axial direction of the liquid injection pipe.

In this embodiment, the blasting hole sealing device further comprises a joint assembly, the joint assembly is arranged at one end of the liquid injection pipe, which is away from the bottom of the drilling hole, the joint assembly is provided with a first liquid injection port and a second liquid injection port, the first liquid injection port is communicated with the first through hole, and the second liquid injection port is communicated with the first transfusion cavity.

In this embodiment, the injection pipe is provided with a rounded corner toward one end of the bottom of the borehole.

Drawings

Fig. 1 is a schematic structural view of a blasting hole sealing device according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of the first expander and the filling pipe according to an embodiment of the present invention.

Fig. 3 is an enlarged view at I in fig. 2.

Reference numerals:

1. A liquid injection pipe; 11. a first through hole;

2. a first expander; 21. an expansion tube; 211. supporting the tube body; 212. an expansion spring piece; 22. a gear shaping member; 221. a sleeve; 222. gear shaping; 23. a bag belt;

3. a first infusion chamber;

4. A second expander; 41. an expansion body; 42. a connecting piece;

5. a second infusion chamber;

6. A joint assembly; 61. a first liquid injection port; 62. a second liquid injection port; 63. a first joint body; 64. and a second joint body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In this embodiment, as shown in fig. 1, the blast hole sealing device includes a liquid injection pipe 1 and a first expander 2, the liquid injection pipe 1 having a first through hole 11. The first expander 2 comprises an expansion tube 21 and a gear shaping piece 22, the expansion tube 21 is arranged outside the liquid injection tube 1, a first transfusion cavity 3 is formed between the expansion tube 21 and the first liquid injection tube 1, the expansion tube 21 expands when high-pressure liquid is input into the first transfusion cavity 3, the gear shaping piece 22 is arranged on the outer wall of the expansion tube 21, and the gear shaping piece 22 is used for being inserted into the inner wall of a drilled hole when the expansion tube 21 expands.

For example, the high pressure liquid may be water. The type of the high-pressure liquid may be set as needed, and is not limited herein.

When the explosion hole sealing device in the embodiment is used for explosion, explosive is filled in a drill hole, a lead is led out of the drill hole, flame retardant materials are filled in the drill hole, the explosive is compacted, the lead is penetrated from one end of the first through hole 11 and led out from the other end of the first through hole 11, then the explosion hole sealing device is filled in the drill hole, high-pressure liquid is input into the first infusion cavity 3, the expansion pipe 21 is expanded, the expansion pipe 21 can be attached to the inner wall of the drill hole, meanwhile, the expansion pipe 21 drives the gear shaping piece 22 to be inserted into the inner wall of the drill hole, the reliability of connection between the first expander 2 and the wall of the drill hole is further improved, the blocking effect is better, meanwhile, the hole sealing liquid can be conveyed to the bottom of the drill hole through the first through hole 11, the impact force of the explosion is buffered during the explosion, the explosion safety is improved, the high-pressure liquid can be discharged from the first infusion cavity 3 after the explosion is completed, and finally the explosion hole sealing device is taken out from the drill hole.

In the present embodiment, as shown in fig. 1 and 2, the expansion tube 21 includes a support tube body 211, a plurality of expansion elastic pieces 212, and an elastic membrane, the support tube body 211 being provided outside the first liquid injection tube 1; the expansion spring plates 212 are semicircular, the expansion spring plates 212 are arranged at one end of the support tube body 211 adjacent to the bottom of the drilled hole and distributed along the circumferential direction of the support tube body 211, and the outer wall of each expansion spring plate 212 is provided with a gear shaping piece 22; the elastic membrane is disposed between two adjacent expansion elastic sheets 212, so that the expansion elastic sheets 212 and the elastic membrane are enclosed to form a circular tube shape.

For example, the elastic membrane may be a high temperature resistant, flame retardant rubber elastic membrane. Of course, the elastic membrane may be made of other materials, and is not limited thereto. The elastic membrane may be riveted to the inflatable dome 212 by anchors.

Specifically, the supporting tube 211 and the expansion elastic sheets 212 are integrally formed, and the expansion elastic sheets may be formed by dividing round tubes. The number of the expansion spring pieces 212 may be two, three, four, etc., and the number of the expansion spring pieces 212 is not intended to limit the present invention. The wall thickness of the supporting tube 211 is larger than that of the expansion spring piece 212, and the expansion spring piece 212 can be supported by the supporting tube 211, so that the whole structure of the expansion tube 21 is more stable. Further, a first support member (not shown) is provided between the support tube body 211 and the pouring spout 1, and the support tube body 211 can be stably provided outside the pouring spout 1 by providing the first support member. The first support piece is annular, and is provided with first hole of dodging on the first support piece to make high-pressure liquid can pass through first hole of dodging.

The gear shaping piece 22 sets up in the one end that expansion shell fragment 212 deviates from the support body 211, and expansion shell fragment 212 deviates from the one end of support body 211, receives the restriction of support body 211 less, and during expansion shell fragment 212 inflation, the one end that deviates from support body 211 can the outside expansion of a relatively large margin to be favorable to making the inner wall laminating of gear shaping piece 22 inseparabler and drilling.

It will be appreciated that when high pressure liquid is introduced into the first infusion chamber 3, the expansion dome 212 and the elastic membrane are driven to expand to the outside under the pressure of the high pressure liquid, so that the expansion tube 21 and the inner wall of the borehole can be closely attached.

In the present embodiment, as shown in fig. 1 and 2, the inflation tube 21 further includes a bag strap 23, the bag strap 23 is disposed outside the inflation spring 212, and the bag strap 23 is located between the gear shaping member 22 and the support tube body 211.

For example, the bladder belt 23 is a rubber bladder belt, and the material of the bladder belt 23 is not limited to the present invention, and may be selected as needed by those skilled in the art.

It can be appreciated that, through setting up the bag area 23 in the outside of inflation shell fragment 212, when inflation shell fragment 212 outwards wall inflation, can drive the laminating of the inner wall of bag area 23 and drilling, the cooperation of inflation shell fragment 212, bag area 23 and gear shaping piece 22 has further improved the shutoff effect of first expander 2 to the drilling.

In this embodiment, as shown in fig. 1 and 2, the outer wall of the expansion spring 212 is provided with a groove, and the bag belt 23 is disposed in the groove.

It can be appreciated that by providing the groove, under the condition that the bag belt 23 has a certain installation space, the thickness of the expansion elastic sheet 212 can be thinned, so that the elasticity of the expansion elastic sheet 212 is larger, the expansion effect of the expansion elastic sheet 212 is improved, and meanwhile, when the explosion hole sealing device is moved out of the drill hole, the bag belt 23 can be pushed to deviate towards the center of the drill hole under the pressure action of the inner wall of the drill hole, so that the explosion hole sealing device can be taken out of the drill hole conveniently.

In this embodiment, as shown in fig. 2 and 3, the gear shaping member 22 includes a sleeve 221 and a gear shaping 222, the sleeve 221 is sleeved on the expansion spring 212, the outer wall of the sleeve 221 is provided with a plurality of gear shaping 222, the tooth tip of the gear shaping 222 is obliquely arranged in a direction away from the bottom of the hole, and the gear shaping 222 is convexly arranged in an arc shape towards the bottom of the hole of the side direction hole of the hole bottom of the hole.

Specifically, the shape of the sleeve 221 matches the cross-sectional outer contour of the expansion dome 212, and the sleeve 221 may be sleeved and welded on the collision dome. The gear shaping 222 may be a saw blade disposed on the sleeves 221, and one or more saw blades may be disposed on each sleeve 221. The saw blade may be welded to the sleeve 221. Of course, the gear shaping 222 may be directly provided on the expansion dome 212, and is not limited thereto.

When the expansion spring 212 is in a free state, the maximum outer diameter of the bag belt 23 on the expansion spring 212 is larger than the maximum outer diameter of the gear shaping piece 22 on the expansion spring 212, so that the blasting hole sealing device can be conveniently removed from the drill hole. When the expansion spring 212 expands, the gear shaping member 22 can be inserted into the inner wall of the rotation hole, and the bag belt 23 is received by the inner wall of the drill hole and the expansion spring 212.

It is to be appreciated that the gear shaping 222 is disposed on the sleeve 221, and the sleeve 221 is sleeved on the expansion spring 212, so that the gear shaping 222 can be conveniently installed, a plurality of gear shaping 222 are disposed on the outer wall of each sleeve 221, so that the gear shaping piece 22 and the inner wall of the drill hole can be tightly combined, the tooth tip of the gear shaping 222 is obliquely disposed towards the direction deviating from the bottom of the drill hole, so that the gear shaping 222 can be tightly inserted into the inner wall of the drill hole during blasting, and the gear shaping 222 is convexly arranged in an arc shape towards one side of the bottom of the drill hole, so that the gear shaping 222 can be conveniently moved out from the inner wall of the drill hole during shrinkage of the expansion spring 212.

In this embodiment, as shown in fig. 1, the blasting hole sealing device further includes a second expander 4, the second expander 4 is disposed outside the injection tube 1, and the second expander 4 is located at one end of the first expander 2 away from the bottom of the drilling hole, a second infusion cavity 5 is formed between the second expander 4 and the injection tube 1, and the second infusion cavity 5 is communicated with the first infusion cavity 3.

When the high-pressure liquid is input into the second infusion cavity 5, the high-pressure liquid can enter the first infusion cavity 3 through the second infusion cavity 5, so that the hole sealing effect of the explosion hole sealing device is better under the double plugging effect of the first expander 2 and the second expander 4.

In the present embodiment, as shown in fig. 1, the second expander 4 includes an expansion body 41 and connecting members 42, the connecting members 42 are provided at both ends of the expansion body 41, and the second expander 4 is connected to the expansion pipe 21 adjacent to the connecting members 42 of the first expander 2.

For example, the expansion body 41 may be a high temperature resistant and flame retardant rubber expansion body, and the specific type of the rubber expansion body may be selected according to actual requirements, and is not limited herein.

For example, one of the connection member 42 adjacent to the first expander 2 and the expansion pipe 21 has an external thread and the other has an internal thread, so that the connection member 42 and the expansion pipe 21 are screwed, and one of the connection members 42 at both ends of the expansion body 41 has an external thread and the other has an internal thread, and when the second expanders 4 are provided in plurality, the adjacent two second expanders 4 can be screwed.

Specifically, an annular connecting groove is formed in the connecting piece 42, one end of the expansion body 41 is inserted into the annular connecting groove, and the expansion body 41 is clamped on the expansion body 41.

Further, set up the second support piece between connecting piece 42 and the notes liquid pipe 1, can be with connecting piece 42 stable outside that sets up at notes liquid pipe 1, the second support piece is annular, and has the second on the second support piece and dodge the hole, dodges the hole through setting up the second so that high-pressure liquid can dodge the hole through the second, both can be when second infusion chamber 5 and first infusion chamber 3 intercommunication, make simultaneously between a plurality of second infusion chambers 5 intercommunication.

It will be appreciated that by providing the connection member 42 to connect the expansion body 41 to the exterior of the filling pipe 1, the connection of the expansion body 41 can be facilitated while the second expander 4 is stably provided to the exterior of the filling pipe 1.

In the present embodiment, a plurality of second expanders 4 are provided, and the plurality of second expanders 4 are connected in sequence in the axial direction of the liquid injection tube 1.

For example, the number of the second expanders 4 may be two, three, four, five, or the like, and the number of the second expanders 4 may be set according to the length of the drilled hole, which is not limited herein.

It will be appreciated that by providing a plurality of second expanders 4, the friction between the blast hole sealing means and the inner wall of the borehole can be increased, so that the reliability of the plugging can be improved.

In this embodiment, as shown in fig. 1, the blasting hole sealing device further includes a joint assembly 6, where the joint assembly 6 is disposed at one end of the liquid injection tube 1 away from the bottom of the drilling hole, the joint assembly 6 has a first liquid injection port 61 and a second liquid injection port 62, the first liquid injection port 61 is communicated with the first through hole 11, and the second liquid injection port 62 is communicated with the first transfusion cavity 3.

For example, the joint assembly 6 may be threadably coupled to the second expander 4, as is conventional in the art and will not be described in detail herein.

Specifically, the first filling port 61 is adapted to be connected to a first pump for delivering high-pressure liquid into the second infusion chamber 5 via the first pump. The second filling port 62 is adapted to be connected to a second pump for delivering the plugging liquid into the first through-hole 11 by the second pump. The first liquid injection port 61 is provided with a first valve, the on-off of the first liquid injection port 61 can be conveniently controlled through the first valve, the second liquid injection port 62 is provided with a second valve, and the on-off of the second liquid injection port 62 can be conveniently controlled through the second valve.

The connector assembly 6 includes a first connector body 63 and a second connector body 64, the first connector body 63 has a second through hole, the second through hole is communicated with the first through hole 11, and the first liquid injection port 61 is arranged on the side wall of the first connector body 63, the first liquid injection port 61 is communicated with the second through hole, and the blasting lead can be led out from the first through hole 11 through the second through hole. The end of the second through hole, which is far away from the first through hole 11, can be provided with a plug, and a threading hole is formed in the plug, so that the blasting lead can be led out from the joint assembly 6, and meanwhile, the end of the second through hole is plugged by the plug, so that plugging liquid is conveyed into the second through hole by the joint assembly 6. The second connects the body 64 setting in the outside of first joint body 63, is formed with the passageway between second joint body 64 and the first joint body 63, passageway and first infusion chamber 3, second infusion chamber 5 intercommunication, and the second annotates liquid mouth 62 setting on the lateral wall of second joint body 64, second annotates liquid mouth 62 and passageway intercommunication.

It will be appreciated that by providing the connector assembly 6 and providing the first and second fluid injection ports 61, 62 on the connector assembly 6, it is possible to facilitate the transfer of the blocking fluid into the central tube and the transfer of the high pressure fluid into the first and second fluid transfer chambers 3, 5.

In the present embodiment, as shown in fig. 1 and 3, the end of the pour tube 1 facing the bottom of the drilled hole is provided with a rounded corner.

It can be understood that by arranging the rounded corner at one end of the liquid injection pipe 1 facing the bottom of the drilled hole, the liquid in the liquid injection pipe 1 can smoothly flow into the drilled hole, thereby better plugging the drilled hole.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. A blasting hole sealing device, comprising:

The liquid injection pipe is provided with a first through hole;

The expansion device comprises a first expansion device, wherein the first expansion device comprises an expansion pipe and a gear shaping piece, the expansion pipe is arranged outside the liquid injection pipe, a first transfusion cavity is formed between the expansion pipe and the first liquid injection pipe, the expansion pipe expands when high-pressure liquid is input into the first transfusion cavity, the gear shaping piece is arranged on the outer wall of the expansion pipe, and the gear shaping piece is used for being inserted into the inner wall of a drilled hole when the expansion pipe expands.

2. The blast-hole sealing device of claim 1, wherein the expansion pipe comprises:

the support tube body is arranged outside the first liquid injection tube;

The expansion elastic pieces are semicircular, are arranged at one end of the supporting tube body adjacent to the bottom of the drilled hole, are distributed along the circumferential direction of the supporting tube body, and are provided with the gear shaping pieces on the outer wall of each expansion elastic piece;

the elastic membrane is arranged between two adjacent expansion elastic sheets, so that a plurality of expansion elastic sheets and the elastic membrane are enclosed to form a circular tube shape.

3. The blast hole sealing device of claim 2, wherein the first expander further comprises a bladder band disposed outside of the expansion dome, and wherein the bladder band is located between the gear shaping and the support tube.

4. A blasting hole sealing device according to claim 3, wherein the outer wall of the expansion dome is provided with a recess, and the capsule strip is disposed in the recess.

5. The blasting hole sealing device according to claim 2, wherein the gear shaping member comprises a sleeve and a gear shaping, the sleeve is sleeved on the expansion spring, a plurality of the gear shaping teeth are arranged on the outer wall of the sleeve, the tooth tips of the gear shaping teeth are obliquely arranged in a direction away from the bottom of the drilled hole, and the gear shaping teeth are protruding in an arc shape towards one side of the bottom of the drilled hole.

6. The blast hole sealing device according to claim 1, further comprising a second expander, wherein the second expander is arranged outside the liquid injection pipe, the second expander is positioned at one end of the first expander, which is away from the bottom of the drilling hole, a second transfusion cavity is formed between the second expander and the liquid injection pipe, and the second transfusion cavity is communicated with the first transfusion cavity.

7. The blast hole sealing device of claim 6, wherein the second expander comprises an expansion body and a connector, the connector is disposed at both ends of the expansion body, and the connector of the second expander adjacent to the first expander is connected to the expansion pipe.

8. The blasting and hole sealing device according to claim 1, wherein a plurality of second expanders are provided, and the plurality of second expanders are sequentially connected in the axial direction of the liquid injection pipe.

9. The blasting hole sealing device according to claim 1, further comprising a joint assembly disposed at an end of the liquid injection tube facing away from the bottom of the borehole, the joint assembly having a first liquid injection port and a second liquid injection port, the first liquid injection port being in communication with the first through hole, the second liquid injection port being in communication with the first infusion chamber.

10. The blasting hole sealing device according to any one of claims 1 to 9, wherein the end of the injection pipe facing the bottom of the drilled hole is provided with a rounded corner.