A cutting seam and energy gathering tube and water interval charge structure for water pressure energy gathering smooth blasting

Abstract

The application discloses a cutting seam shaped charge tube and a water interval charging structure for water pressure smooth blasting. The tube body and the connector of the cutting seam shaped charge tube are both elliptical cylindrical tubes, the charging port of the tube body is arranged at one end of the long axis of the elliptical cylindrical tube in the axial direction and penetrates both ends, the tube wall of the other end of the long axis of the elliptical cylindrical tube is a flat bottom surface I parallel to the charging port, the tube wall on both sides of the tube body at the charging port is provided with an axial cutting seam, and the end faces of the tube wall on both sides of the charging port are provided with axial inward extending buckle grooves. The inner wall of the connector is equivalent to the outer wall of the tube body, and the long axis of the inner wall is provided with buckles which can be inserted into the buckle grooves. The water interval charging structure is used for spacing the water bag and the explosive cartridge in the cutting seam shaped charge tube. The cutting seam shaped charge tube has the characteristics of simple structure, accurate positioning, convenient operation and low explosive consumption, the cartridge is more accurately positioned in the blast hole, the processes of binding the cartridge and the detonating cord are omitted, the half-hole rate after excavation is high, the surrounding rock disturbance is small, and the overbreak and underbreak are small.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of blasting engineering, and particularly relates to a cutting seam energy-gathering pipe for energy-gathering water pressure smooth blasting and a water interval charging structure which are simple in structure, accurate in positioning, convenient to operate and low in explosive consumption. BACKGROUND

[0002] At present, smooth blasting or pre-splitting blasting is often used in roadway and tunnel blasting engineering to reduce overbreak and underbreak of the excavation surface, so as to achieve the purposes of rock mass stability, smooth and flat excavation surface and excavation contour meeting the design requirements. However, the conventional smooth blasting and pre-splitting blasting have problems such as over-dense hole arrangement, long time-occupying of the drilling operation, and easy occurrence of cracks or cavities in surrounding rock, and easy overbreak. Therefore, in 2015, He Guangyi, Liu Haibo and others developed and proposed a new technology of energy-gathering water pressure smooth blasting, which uses a successfully developed "energy-gathering pipe device for injecting medicine" to replace the medicine roll in the conventional smooth blasting blast hole, and a certain amount of "water" is filled at a predetermined position in the smooth blasting blast hole, and finally the blast hole is backfilled and blocked with clay. This new type of filling structure has the following advantages: directional energy-gathering effect, "water wedge effect", enlarged hole spacing of the surrounding holes, reduced number of surrounding holes, controlled overbreak, reduced disturbance of surrounding rock and dust reduction effect.

[0003] Although the energy-gathering water pressure smooth blasting technology enlarges the spacing of smooth blasting holes and saves the amount of explosive, there are still the following problems in actual popularization and application: the medicine roll needs to be disassembled, and then the medicine is filled by using a medicine injection gun. This operation is time-consuming and troublesome, and there are certain safety problems and hidden dangers of explosive loss in the operation site. Manual medicine filling makes the filling diameter uncontrollable, which may cause misfire. The water pressure is not fully utilized, only water bags are placed at the bottom of the hole and the front end of the charge, and the coupling effect with the detonation wave is not sufficient, the "water wedge" effect is not obvious. Moreover, the explosion energy-gathering effect of the energy-gathering pipe is not clear, and there is no actual measurement evidence. The whole hole charging process is complicated, and at least four steps are required: water bag, energy-gathering pipe, water bag and filling. The cost of auxiliary materials for blasting is too high.

[0004] Furthermore, the existing art energy-gathering water pressure smooth blasting technology mostly uses a thin-walled round pipe or a special-shaped pipe made of PVC or other materials as the energy-gathering pipe, and processes V-shaped grooves, slits or circular row holes and sets triangular recesses and other energy-gathering cavity structures on the side pipe wall in longitudinal symmetry, so that the blasting energy is preferentially discharged from both sides to destroy the rock wall, thereby changing the distribution of the blasting stress field and making the rock surface cracks directionally expand under the action of the explosion gas to form a precisely controlled fracture surface. However, the length of the existing energy-gathering pipe is mostly equivalent to or slightly longer than the length of the cartridge, and in order to realize the predetermined interval charging and correct guidance in the blast hole, the connection is often realized by binding on a long uncoupling strip, or by using a casing and a screw to realize the front and rear connection. The foregoing connection structure not only increases the use cost of auxiliary materials, but also has insufficient reliability of the uncoupling strip connection, and the connection of the casing and the screw has the problem of complicated operation. Moreover, the existing energy-gathering pipe structure design needs to be improved, and the distribution of the explosive energy in the use process is not reasonable enough, the blasting secondary hazards such as the large expansion range of the blast cracks and the large blasting disturbance cannot be effectively controlled, the blasting overbreak of the roadway or chamber contour surface cannot be effectively controlled, the contour surface is uneven, and the construction workload is increased. The unreasonable energy-gathering pipe structure will also rotate during being pushed into the blast hole due to the friction with the blast hole wall, the orientation of the upper slit will change, the direction of the rock cracks after blasting will deviate from the predetermined orientation, and the effect of controlled blasting cannot be achieved. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a slit energy-gathering pipe for energy-gathering water pressure smooth blasting, which is simple in structure, accurate in positioning, convenient to operate and low in explosive consumption, and also provides a water interval charging structure based on the slit energy-gathering pipe for energy-gathering water pressure smooth blasting.

[0006] The slit energy-gathering pipe for energy-gathering water pressure smooth blasting of the present application is implemented as follows: comprising a pipe body and a connector, one end of the pipe body is inserted into the connector;

[0007] The pipe body is an elliptical cylindrical pipe and comprises a charging port, the charging port is provided on the pipe wall at one end of the major axis of the elliptical cylindrical pipe and extends in the axial direction and penetrates both ends, the pipe wall at the other end of the major axis of the elliptical cylindrical pipe is a flat bottom surface I parallel to the charging port, the pipe body further comprises slits respectively provided on the pipe walls on both sides of the charging port and extending in the axial direction, and further comprises buckle grooves respectively provided on the end faces of the pipe walls on both sides of the charging port and extending in the axial direction towards the inside;

[0008] The connector is an elliptical cylindrical pipe and the inner wall size is equivalent to the outer wall size of the pipe body, and the connector further comprises buckles respectively provided on the inner walls on both sides of the major axis and insertable into the buckle grooves.

[0009] The water interval charge structure of the slit energy-gathering tube for poly-energetic water pressure smooth blasting is realized by the following: the water bag, the electronic detonator, the detonating fuse, and the detonation bus are further included, the explosive cartridges are loaded in the pipe body with the same size, the water bag is filled between the explosive cartridges and / or at the opening of the pipe body outside the explosive cartridges, the electronic detonator is buried in or closely contacts with one of the explosive cartridges, the detonating fuse closely contacts with each explosive cartridge, the foot line of the electronic detonator and the detonating fuse are arranged between the flat bottom surface I and the explosive cartridges and the water bag, the foot line of the electronic detonator is sealed through the stemming and connected with the detonator through the detonation bus.

[0010] The beneficial effects of the present application are as follows:

[0011] 1. The slit energy-gathering tube of the present application improves the directional fracture blasting effect by designing the pipe body as an elliptical cylindrical pipe and replacing the energy-gathering hole structure of the existing energy-gathering tube with a slit, and the smooth blasting effect is obviously better than the traditional smooth blasting when the surrounding rock is poor, the half-hole rate is high, the wall is complete, and the overbreak and underbreak are small.

[0012] 2. The slit energy-gathering tube of the present application further arranges the charging port and the flat bottom surface I at both ends of the long axis of the elliptical cylindrical pipe, which not only enables the explosive cartridges to be fixed in the pipe body without cutting, but also reduces the cross-sectional area of the pipe body in the long axis direction after charging, thereby ensuring the smoothness when loaded into the blast hole; and the charging port structure of the pipe body can guide the blasting energy, and the flat bottom surface I can block the blast gas, so that the blasting energy produces an energy-gathering effect along the designed blasting contour line, and the cracks are generated from the contour line direction, thereby producing a smooth and neat contour line.

[0013] 3. The slit energy-gathering tube of the present application is provided with buckle grooves at both ends of the pipe body, and a buckle is designed on the connector, so that the slit energy-gathering tube is integrated to charge, detonating fuse and water bag, which not only protects the water bag from breaking, but also can cope with more hole depth working conditions, and the positioning of the cartridges in the blast hole is more accurate, and it can also ensure that the slits of multiple pipe bodies are on the same horizontal line, and the process of bundling cartridges and detonating fuses is omitted.

[0014] 4. The connector of the present application is an elliptical cylindrical pipe with an inner wall size equivalent to the outer wall size of the pipe body, and the pipe wall at both ends of the long axis is further provided with a flat bottom surface, which not only improves the firmness of the connection with the pipe body, but also makes the connection operation more convenient; the connector sleeve on the pipe body connection structure can also reduce the gap between the water bag and the cartridge at the end of the adjacent pipe body, thereby improving the continuity of the explosion energy; in particular, the partition plate with an attached gap is arranged inside the connector, which not only controls the position between the two adjacent pipe bodies, but also leaves space for the detonating fuse for transmission and the foot line of the electronic detonator for detonation, and the detonating fuse and the electronic detonator can also be fixed.

[0015] 5、The water interval charging structure of the application can not only realize the elongation of the hole and the water pressure energy increase, but also the energy of the front end of the blast hole is uniformly distributed, and there is no need to drill small holes, and the energy of the cut seam can also be used to enlarge the hole spacing, and in the embodiment, the number of peripheral holes can be reduced by more than 30%, and the single hole charge of the peripheral hole can be reduced by about 25%; the overall explosive unit consumption is about 0.53 kg / m 3 , which is reduced by about 0.05 kg / m 3 .

[0016] 6、The water interval charging structure of the application realizes integrated charging, and the water bag can be placed in the blast hole in advance, and when the explosive is initiated, the water in the water bag can play a buffering role, so as to control the disturbance of the explosion to the surrounding rock, and the flatness of the roof after blasting is high and there is no floatstone, which ensures the life safety of the construction personnel. After initiation, the water in the water bag can also play a dust reduction effect, on the one hand, it can reduce the probability of construction personnel suffering from dust lung and other occupational diseases due to blasting dust, and ensure the health of the construction personnel; on the other hand, it can reduce the time and cost of the process of organizing vehicles to spray water for dust reduction in the later period, improve the economic benefit; it can also avoid the environmental pollution caused by dust diffusion, which meets the current domestic green blasting idea.

[0017] In summary, the application has the characteristics of simple structure, accurate positioning, convenient operation and low drug consumption. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the cut seam energy-gathering pipe of the application;

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the pipe body of the application; Figure 1

[0020] Figure 3 It is an enlarged view of the end face of the application; Figure 2

[0021] Figure 4 It is a three-dimensional structure schematic diagram of the connector of the application; Figure 1

[0022] Figure 5 It is an enlarged view of the end face of the application; Figure 4

[0023] Figure 6 It is an enlarged view of the A-A direction of the application; Figure 5

[0024] Figure 7 It is a schematic diagram of the water interval charging structure of the application;

[0025] Figure 8 It is a tunnel conventional smooth blasting blast hole layout in the embodiment;​​​​​

[0026] Figure 9 This is a schematic diagram of the charge structure for conventional smooth blasting in a tunnel, as shown in the example.

[0027] Figure 10 This is a diagram showing the arrangement of blast holes for tunnel-type shaped charge hydraulic blasting in the embodiment.

[0028] In the diagram: 1-tube body, 11-charge port, 12-flat bottom surface I, 13-cut slit, 14-snap slot, 2-connector, 21-snap, 22-flat bottom surface II, 23-flat bottom surface III, 24-partition, 3-explosive cartridge, 4-water bag, 5-electronic detonator, 6-detonating cord, 7-cut shaped charge tube, 8-mud, 9-borehole. Detailed Implementation

[0029] The present application will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present application in any way. Any changes or improvements made based on the teachings of the present application shall fall within the protection scope of the present application.

[0030] like Figures 1 to 6 As shown, the slit-shaped blasting tube for hydraulic pressure blasting of this application includes a tube body 1 and a connector 2, with one end of the tube body 1 being inserted into the connector 2;

[0031] The tube body 1 is an elliptical cylindrical tube and includes a loading port 11. The loading port 11 extends axially and is located on the tube wall at one end of the long axis of the elliptical cylindrical tube and passes through both ends. The tube wall at the other end of the long axis of the elliptical cylindrical tube is a flat bottom surface I12 parallel to the loading port 11. The tube body 1 also has axially extending slits 13 on the tube walls on both sides of the loading port 11. The tube body 1 also has axially extending inwardly extending snap grooves 14 on the end faces of the tube walls on both sides of the loading port 11.

[0032] The connector 2 is an elliptical cylindrical tube with an inner wall size that is equivalent to the outer wall size of the tube body 1. The connector 2 also has buckles 21 that can be inserted into buckle slots 14 on both sides of the long axis of the inner wall.

[0033] The tube body 1 has at least two slits 13 on the tube walls on both sides of the loading port 11, which are on the same straight line. The buckle groove 14 is on the same straight line as the slits 13, and the length of the buckle groove 14 is greater than the length of the buckle 21.

[0034] The long axis of the connector 2 has two symmetrically arranged flat bottom surfaces II22 and III23 on both ends of the tube wall. The flat bottom surfaces II22 and III23 can be fitted with the charging port 11 and the flat bottom surface I12, respectively. The inner sidewalls of the connector 2 on both sides of the flat bottom surface II22 can be fitted with the outer sidewalls of the tube body 1 on both sides of the flat bottom surface I12.

[0035] The minor axis length h of the inner wall of the connector 2 is equivalent to the minor axis length H of the outer wall of the tube body 1, and the distance m between the flat bottom surface II22 and the flat bottom surface III23 on the inner wall of the connector 2 is equivalent to the distance M between the drug loading port 11 and the flat bottom surface I12 on the outer wall of the tube body 1.

[0036] The connector 2 has symmetrical partitions 24 perpendicular to the axis on the inner walls of both sides of the flat bottom surface II22. The snap-fit ​​grooves 14 are provided on both sides of the partitions 24, and there is a gap between the two partitions 24 on the inner wall of the connector 2.

[0037] The partition 24 is located in the middle of the length direction of the connector 2. The two partitions 24 on the inner wall of the connector 2 are "C" shaped structures with openings facing each other, and the minimum distance between the opening surfaces passing through the center is less than the short axis of the inner wall of the tube 1.

[0038] The minor axis of the inner wall of the tube 1 l The diameter of the connector 2 shall not exceed that of the pre-loaded explosive cartridge 3, and the minor axis of the outer wall shall be longer than the diameter of the pre-loaded explosive cartridge 3. l’ Distance between the two ends of the outer wall along the long axis L’ Smaller than the diameter of borehole 9.

[0039] The opening width of the charging port 11 is greater than 1 / 2 of the diameter of the explosive cartridge 3, the width of the flat bottom surface I 12 is greater than 1 / 3 of the diameter of the explosive cartridge 3, and the thickness of the buckle 21 is equal to the width of the buckle groove 14 and not less than the wall thickness of the tube body 1.

[0040] like Figures 1 to 7 As shown, the water-spaced charge structure based on a slit-type shaped charge tube for shaped charge blasting of the present invention also includes a water bag 4, an electronic detonator 5, and a detonating cord 6. The explosive cartridges 3 are loaded into a tube body 1 of similar size. The water bag 4 is fitted together with the explosive cartridges 3 inside the tube body 1 and / or at the opening of the tube body 1 outside the explosive cartridges 3. The electronic detonator 5 is embedded in one of the explosive cartridges 3 or in close contact with one of the explosive cartridges 3. The detonating cord 6 is in close contact with each explosive cartridge 3. The lead wire of the electronic detonator 5 and the detonating cord 6 are set between the flat bottom surface I12 and the explosive cartridges 3 and the water bag 4. The lead wire of the electronic detonator 5 is sealed through the stemming mud 8 and connected to the detonator through the detonation busbar.

[0041] The present invention includes at least two tubes 1 connected end to end by connector 2. The lead wire and detonating cord 6 of the electronic detonator 5 pass through the connector 2. The explosive cartridges 3 or water bags 4 inside the tubes 1 at both ends of the connector 2 are spaced and attached.

[0042] like Figures 1 to 7 As shown, the blasting process of the water-barrier explosive structure is as follows:

[0043] 1. Making auxiliary blasting materials: using a stemming machine and a water bag machine to process stemming 8 and water bag 4.

[0044] 2. Assembling a cut seam cartridge: first, an explosive cartridge 3 equipped with an electronic detonator 5 is loaded into the bottom of the tube body 1, and then the explosive cartridges 3 and water bags 4 are loaded into the tube body 1 in sequence, with the explosive cartridges 3 and water bags 4 connected using a detonating cord 6. The detonating cord 6 and the leg wire of the electronic detonator 5 are pressed on the flat bottom surface I 12 of the tube body 1. Then, according to the depth of the blast hole 9, several tube bodies 1 can be connected by connectors 2 to form an integrated water-spaced charge structure (Note: only one electronic detonator 5 is needed in each blast hole 9).

[0045] 3. Charging: the assembled water-spaced charge structure is loaded into the blast hole 9 and filled with stemming 8, and then the leg wire of the electronic detonator 5 is overlapped onto the main detonation line, and blasting can be performed.

[0046] 4. Acceptance of blasting effect: after blasting, the blasting effect is checked, and it is found that the tunnel cross-section contour line is smooth, and there is a clear half-hole mark. In the case of using poly-energetic water pressure smooth blasting, the dust settling efficiency is higher in the same period after blasting.

[0047] Example

[0048] As shown in Figures 1 to 10 , the water-spaced charge structure of the present application is used for blasting construction in a highland mountainous highway tunnel, and conventional smooth blasting is used as a comparative reference.

[0049] 1. Conventional smooth blasting:

[0050] 1.1. The blast hole arrangement of conventional smooth blasting is shown in Figure 8 (the outermost circle in the figure is the peripheral hole).

[0051] 1.2. The blast hole parameters of conventional smooth blasting are shown in Table 1.

[0052] Table 1. Blast hole parameters of conventional smooth blasting

[0053]

[0054] 1.3. The charge quantity of conventional smooth blasting is shown in Table 2.

[0055] Table 2. Charge quantity of conventional smooth blasting

[0056]

[0057] 1.4. The charge structure of conventional smooth blasting:

[0058] As shown in Figure 9As shown, all the blast holes 9 are continuously uncoupled during the conventional tunneling blasting, each peripheral hole is filled with 4 conventional φ32mm (300g) cartridges and no stemming, the charge length is less than 1.2m, and the hole bottom is initiated by using detonating cord 6 and electronic detonator 7.

[0059] 2. Water-jet assisted smooth blasting:

[0060] 2.1. The blast hole arrangement of water-jet assisted smooth blasting is as shown in Figure 10 (the water interval charge structure of the present application is used in the blast holes No. 83~106).

[0061] 2.2. The blast hole parameters of water-jet assisted smooth blasting are as shown in Table 3.

[0062] Table 3. Blast hole parameters of water-jet assisted smooth blasting

[0063]

[0064] 2.3. The charge amount of water-jet assisted smooth blasting is as shown in Table 4.

[0065] Table 4. Charge amount of water-jet assisted smooth blasting

[0066]

[0067] 2.4. The charge structure of water-jet assisted smooth blasting:

[0068] As shown in Figure 7 , the tunneling uses water-jet assisted smooth blasting, when charging the peripheral holes, 3 cartridges of emulsion explosive are loaded into a single hole, the charge length is 900mm; the water bag 4 is used for interval and connected by detonating cord 6, and then loaded into the cutting seam energy-accumulating tube to assemble into an energy-accumulating charge, the length is about 2.4m; finally, the energy-accumulating charge is loaded into the blast hole 9, and the mortar 8 is used for stemming.

[0069] 3. The comparison of parameters between conventional smooth blasting and water-jet assisted smooth blasting is as shown in Table 5.

[0070] Table 5. Comparison between conventional smooth blasting and water-jet assisted smooth blasting

[0071]

[0072] The above merely provides the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cutting seam shaped charge tube for hydroshaped blasting, characterized in that The utility model relates to a kind of prepackaged explosive cartridges, including pipe body (1), connector (2), one end of the pipe body (1) is inserted with connector (2);The pipe body (1) is elliptic cylindrical tube and includes charging port (11), the charging port (11) is set on the tube wall of the long axis of elliptic cylindrical tube one end and penetrates two ends along axial direction, the tube wall of the long axis other end of elliptic cylindrical tube is flat bottom surface I (12) parallel to charging port (11), the pipe body (1) is also respectively provided with the cut seam (13) extending along axial direction on the tube wall of the two sides of charging port (11), the pipe body (1) is also respectively provided with the buckle slot (14) extending along axial direction inward on the two end faces of the tube wall of the two sides of charging port (11);The pipe body (1) is provided with at least two cut seams (13) on the tube wall of the two sides of charging port (11) respectively on the same straight line, the buckle slot (14) is on the same straight line with cut seam (13), the length of buckle slot (14) is greater than the length of buckle (21);The connector (2) is elliptic cylindrical tube and inner wall size is equivalent with the outer wall size of pipe body (1), the connector (2) is also respectively provided with the buckle (21) that can be inserted into buckle slot (14) on the long axis two sides of inner wall along axial direction;The long axis two end tube wall of the connector (2) is symmetrically arranged flat bottom surface II (22), flat bottom surface III (23), flat bottom surface II (22), flat bottom surface III (23) can be attached with charging port (11), flat bottom surface I (12) respectively, the inner side wall of the two sides of flat bottom surface II (22) of the connector (2) can be attached with the outer side wall of the two sides of flat bottom surface I (12) of pipe body (1);The inner wall short axis length h of the connector (2) is equivalent with the outer wall short axis length H of pipe body (1), the distance m between flat bottom surface II (22) and flat bottom surface III (23) on the inner wall of the connector (2) is equivalent with the distance M between charging port (11) and flat bottom surface I (12) on the outer wall of pipe body (1);The inner wall short axis length l of the pipe body (1) is not greater than the diameter of prepackaged explosive cartridge (3), the outer wall short axis length l' of the connector (2) and the distance L' of the two ends in the long axis direction of outer wall are less than the diameter of blasthole (9).

2. The cutting slit shaped charge tube for water pressure smooth blasting according to claim 1, characterized in that The inner wall on the two sides of flat bottom surface II (22) of the connector (2) is symmetrically provided with the baffle (24) perpendicular to axis, the buckle slot (14) is arranged on the two sides of baffle (24), and the gap is arranged between the two side baffles (24) on the inner wall of the connector (2).

3. The cutting slit shaped charge tube for water pressure smooth blasting according to claim 2, characterized in that The baffle (24) is arranged in the middle of the length direction of the connector (2), the two side baffles (24) on the inner wall of the connector (2) are "C" shaped structure with opening opposite, and the minimum spacing of the opening face passing through the center is less than the inner wall short axis length of the pipe body (1).

4. The cutting slit shaped charge tube for water pressure smooth blasting according to claim 1, characterized in that The opening width of the charging port (11) is greater than 1 / 2 of the diameter of explosive cartridge (3), the width of flat bottom surface I (12) is greater than 1 / 3 of the diameter of explosive cartridge (3), the thickness of buckle (21) is equivalent with the width of buckle slot (14) and is not less than the wall thickness of pipe body (1).

5. A water gap charge structure of a cutting seam shaped charge tube for hydro- jet smooth blasting based on any one of claims 1 to 4, characterized in that It also includes water bag (4), electronic detonator (5), detonating cord (6), the explosive cartridge (3) is installed in the pipe body (1) with the same size, the water bag (4) is filled between the explosive cartridge (3) in the pipe body (1) and / or the opening of the pipe body (1) outside the explosive cartridge (3), the electronic detonator (5) is buried in a volume of explosive cartridge (3) or in close contact with a volume of explosive cartridge (3), the detonating cord (6) is in close contact with each explosive cartridge (3), the foot line of the electronic detonator (5) and the detonating cord (6) are arranged between the flat bottom surface I (12) and the explosive cartridge (3), the water bag (4), the foot line of the electronic detonator (5) is sealed through the stemming (8) and connected with the initiator through the initiating bus.

6. The water-decoupled charge structure of the slotted shaped charge tube for hydro- smooth blasting according to claim 5, characterized in that At least two pipe bodies (1) are connected by connectors (2), the foot line of the electronic detonator (5) and the detonating cord (6) are through the connector (2), the explosive cartridge (3) or the water bag (4) in the pipe body (1) at the front and rear ends of the connector (2) is spaced apart.

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