Umbrella-like soil cover hole opening series follow-up digging device

Abstract

The present invention relates to the field of mining machinery technology, and in particular to a blasting excavation device, specifically an umbrella-like overburden hole-opening and serially advancing pit-digger, comprising a first cabin, a second cabin, a third cabin, and a fourth cabin. The first cabin comprises a warhead and a first shell. A guide rail locator is provided at the rear end of the first shell, and a guide rail is connected to the front end of the guide rail locator. A slider is slidably connected to the guide rail, and the slider is connected to the inner wall of the first shell via an umbrella-like structure. The front end of the guide rail abuts against the rear end of the connecting portion of the warhead. A charge liner, a shaped charge, and a shaped charge fuze are provided within the second cabin. An explosion-proof device is provided within the third cabin, and a follow-up projectile is provided within the fourth cabin. The first cabin of the present invention realizes the hole-opening in the overburden. The load applied to the first cabin by the overburden triggers the movement of the slider, which pushes open the front end of the warhead, provides sufficient forming space for the subsequent jet, increases the penetration depth of the subsequent jet, achieves efficient penetration of the rock mass, and implements blasting pit-diggering.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, in particular to a blasting excavation device, specifically an umbrella-like soil layer opening and serially advancing excavator. Background Art

[0002] When mining, large-scale power machinery or explosive boring equipment is usually used to dig pits. Explosive boring equipment is often used in mining environments where large equipment cannot enter the site. Because there is often an overburden layer on the surface of the mine, and some overburden layers are quite thick, in order to obtain a larger pit opening in the rock mass, the explosive boring equipment must first clear the overburden layer on the rock mass or drill a hole in the overburden layer, then drill a hole in the rock mass, and finally send the explosive equipment into the hole to blast. In mining environments where large-scale power machinery cannot enter the site, clearing the overburden layer is obviously also mainly done by manpower. Thick overburden layers consume a lot of manpower and material resources; similar problems also exist when drilling deep holes in thick overburden layers. Based on the above considerations, in order to save labor and improve efficiency, it is necessary to develop a new method of digging pits to solve the above problems. Summary of the Invention

[0003] In response to the problems raised in the background technology, the purpose of the present invention is to propose an umbrella-like overburden hole opening and serial follow-up pit digging device, which adopts multi-stage charging and multi-stage cabin, combined with the process characteristics of the projectile penetrating the overburden and rock mass, to realize the continuous operation of opening holes in the overburden and blasting and digging holes in the rock mass; the first cabin of the present invention is designed with an umbrella-like structure, a slider and a guide rail inside, and the first cabin is used to open a hole in the overburden, and the load applied to the first cabin by the overburden layer triggers the movement of the slider, pushes open the front end warhead, provides sufficient forming space for subsequent jets, improves the penetration depth of subsequent jets, and finally realizes efficient penetration of the rock mass and implements blasting and digging holes.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An umbrella-like soil covering layer hole opening and serial follow-up digging device comprises a first cabin, a second cabin, a third cabin and a fourth cabin which are sequentially threadedly connected from front to back, wherein the first cabin comprises a warhead and a first shell, the warhead comprises a tip at the front end and a connecting portion at the rear end, the connecting portion and the tip being solidly integrated; the outer surface of the first shell is front streamlined as a whole, a through hole is provided at the middle of the front end of the first shell, the connecting portion of the warhead is inserted into the through hole of the first shell, and the connecting portion of the warhead is connected to one side of the first shell by a connecting piece, and the tip of the warhead smoothly transitions to the outer surface of the first shell; a guide rail locator is provided at the rear end of the interior of the first shell, the front end of the guide rail locator is connected to a guide rail, a slider is slidably connected to the guide rail, and the slider is connected to the inner wall of the first shell through an umbrella-like structure; the front end of the guide rail abuts against the rear end of the connecting portion of the warhead;

[0006] A shaped charge locator is provided at the rear end of the second cabin, which separates the inner cavity of the second cabin from the inner cavity of the third cabin; a liner, a shaped charge and a shaped charge fuze are provided inside the second cabin, and the liner separates the inner cavity of the second cabin from the inner cavity of the first cabin. After the first cabin penetrates the covering layer to form a cavity, the shaped charge fuze is detonated to detonate the shaped charge. When the shaped charge explodes, it squeezes the liner and the guide rail locator to form a secondary shaped charge penetrator to damage the hard rock and soil layer;

[0007] The third cabin is provided with an explosion-proof device, the rear end of which is provided with an explosion-proof inner cabin, the rear end of which extends to the interior of the fourth cabin;

[0008] The fourth cabin is provided with a follow-up projectile, the front end of which is docked with the rear end of the explosion-proof inner cabin. After the secondary shaped-energy penetrator destroys the hard rock and soil layer, the follow-up projectile squeezes the explosion-proof inner cabin and the explosion-proof device to form a tertiary shaped-energy penetrator to penetrate the hard rock and soil layer again, and the follow-up projectile explodes to form a penetration pit.

[0009] The guide rail locator is a cone-shaped shell with an open rear end. The outer diameter of its front end is smaller than the outer diameter of the rear end. The rear end of the guide rail locator is threadedly connected to the rear end of the first shell. A blind hole is provided in the middle of the front end face of the guide rail locator, and the rear end of the guide rail is inserted into the blind hole. The rear outer wall of the guide rail is also provided with an annular positioning boss, which conflicts with the opening of the blind hole.

[0010] The umbrella-like rib structure includes a plurality of inclined support beams, which are evenly distributed around the periphery of the slider and respectively connected to the slider; each support beam is connected to the slider at the front end and to the first shell at the rear end.

[0011] An annular groove is provided in the middle portion of the inner wall of the first shell, and the rear end of each support beam is fixed in the annular groove.

[0012] The connecting piece is a rivet, and the connecting portion of the bullet is connected to the first shell through the rivet.

[0013] The slider and the guide rail are both hollow straight rod structures with rectangular cross-sections, and the slider is sleeved on the outside of the guide rail.

[0014] The second cabin body is a tubular structure with two ends open. The front end of the second cabin body is connected to the first shell, and the rear end is connected to the third cabin body. The liner is arranged at the front end of the interior of the second cabin body. The liner is a shell structure with an open front end. The liner and the guide rail positioner form a closed shell. The closed shell closes the front end opening of the second cabin body, and the energy-gathering positioner closes the rear end opening of the second cabin body.

[0015] The shaped charge comprises a shaped charge main charge, a shaped charge partition and a shaped charge auxiliary charge, the shaped charge auxiliary charge is arranged on the front end surface of the shaped charge positioner, the shaped charge main charge is filled between the liner and the shaped charge auxiliary charge, and the shaped charge partition is arranged between the shaped charge main charge and the shaped charge auxiliary charge; the shaped charge fuze is arranged in the middle of the rear end of the shaped charge auxiliary charge;

[0016] The shaped charge partition is a disc-shaped structure with a conical boss on its front end surface, and the top angle of the conical boss faces the front end center of the warhead.

[0017] The fourth cabin body as a whole is a tubular structure with an open front end and a closed rear end. A support sleeve with an open front end and a closed rear end is provided inside the fourth cabin body. The support sleeve is arranged in the middle of the tubular cavity of the fourth cabin body through a support frame; the rear end of the follow-up projectile is inserted into the support sleeve, and the front end is inserted into the rear end opening of the explosion-proof inner cabin.

[0018] The following projectile includes a projectile shell, a buffer layer, a projectile charge, a projectile fuze and a base. The buffer layer is filled in the front end of the projectile shell, the base is fixed to the rear end of the projectile shell, the projectile charge is filled between the buffer layer and the base, and the projectile fuze is arranged in the middle of the rear end of the projectile charge; the front end of the projectile shell has an outer conical surface, and the rear end opening of the explosion-proof inner cabin is sleeved on the outer conical surface of the front end of the projectile shell.

[0019] The support sleeve is provided with a plurality of slots on the outer circumferential wall, and the fourth cabin body is provided with a plurality of through slots, and the plurality of through slots correspond one-to-one to the plurality of slots. The support frame includes a plurality of support rods, and one end of each support rod is inserted into a slot on the outer circumferential wall of the support sleeve, and the other end is inserted into the corresponding through slot on the circumferential wall of the fourth cabin body.

[0020] The present invention has the following beneficial effects: the present invention efficiently handles the impact of the penetration of the overburden layer on the serial follow-up digging device through the first cabin, and the slider connected by the umbrella-like structure and the warhead connected by rivets make the first cabin squeezed by the overburden layer, and the umbrella-like structure converges, pushing the slider and colliding with the warhead, so that the warhead deviates from the jet penetration trajectory, avoiding obstruction to the subsequent jet and the follow-up digging device; the structural design of the present invention can increase the penetration depth of the subsequent jet, effectively avoid the phenomenon of premature explosion and fracture of the subsequent follow-up projectile, ensure the penetration and damage effect of the subsequent follow-up projectile, and achieve efficient penetration of the rock mass and implementation of blasting and digging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the umbrella-like rib structure, the slider, the guide rail and the first shell.

[0023] Figure 3It is a cross-sectional view of the umbrella-like rib structure and the slide rail.

[0024] In the figure: 1-warhead, 2-connecting part, 3-slider, 4-support beam, 5-guide rail, 6-guide rail locator, 7-first shell, 8-charge liner, 9-shaped charge main charge, 10-shaped charge partition, 11-second cabin, 12-shaped charge secondary charge, 13-shaped charge fuze, 14-shaped charge locator, 15-explosion-proof device, 16-explosion-proof inner cabin, 17-gasket, 18-buffer layer, 19-projectile shell, 20-support frame, 21-projectile charge, 22-support sleeve, 23-fourth cabin, 24-projectile fuze, 25-base, 26-third cabin. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0026] like Figure 1-3 As shown, the present invention provides an umbrella-like soil cover hole opening and serial follow-up digging device, comprising a first cabin, a second cabin 11, a third cabin 26 and a fourth cabin 23 which are sequentially threaded from front to back, wherein the first cabin comprises a warhead 1 and a first shell 7, the warhead 1 comprises a front end tip and a rear end connecting portion, the connecting portion and the tip being integrally formed; the outer surface of the first shell 7 is front streamlined as a whole, a through hole is provided in the middle of the front end of the first shell 7, the connecting portion of the warhead 1 is inserted into the through hole of the first shell 7, and the connecting portion of the warhead 1 is connected to one side of the first shell 7 via a connecting piece 2, the warhead 1 The tip of the first shell 7 smoothly transitions to the outer surface of the first shell 7; a guide rail locator 6 is provided at the rear end of the interior of the first shell 7, and a guide rail 5 is connected to the front end of the guide rail locator 6. A slider 3 is slidably connected to the guide rail 5, and the slider 3 is connected to the inner wall of the first shell 7 through an umbrella-like rib structure; the front end of the guide rail 5 abuts against the rear end of the connection part of the bullet 1; during the process of the first shell 7 penetrating the covering layer, it contracts under the pressure load, compressing the umbrella-like rib structure, and after the umbrella-like rib structure is compressed and converged, it pushes the slider 3 to the bullet 1. Since the bullet 1 is connected to one side of the first shell 7, it is subjected to an asymmetric force, and then the bullet 1 is deflected, and does not occupy the penetration of the shaped jet in the subsequent jet channel;

[0027] A shaped charge locator 14 is provided at the rear end of the second cabin 11, which separates the inner cavity of the second cabin 11 from the inner cavity of the third cabin 26; a liner 8, a shaped charge and a shaped charge fuze 13 are provided inside the second cabin 11, and the liner 8 separates the inner cavity of the second cabin 11 from the inner cavity of the first shell 7. After the first cabin penetrates the covering layer to form a cavity, the shaped charge fuze 13 is detonated to detonate the shaped charge. When the shaped charge explodes, it squeezes the liner 8 and the guide rail locator 6 to form a secondary shaped charge penetrator to damage the hard rock and soil layer;

[0028] The third cabin 26 is provided with an explosion-proof device 15, and a explosion-proof inner cabin 16 is provided at the rear end of the explosion-proof device 15. The rear end of the explosion-proof inner cabin 16 extends into the interior of the fourth cabin 23; the explosion-proof device 15 prevents the detonation wave generated by the detonation of the front-stage shaped charge from propagating to the rear-stage following projectile and detonating the projectile charge;

[0029] The fourth cabin 23 is provided with a follow-up projectile, the front end of which is docked with the rear end of the explosion-proof inner cabin 16. After the secondary shaped-energy penetrator damages the hard rock and soil layer, the follow-up projectile squeezes the explosion-proof inner cabin 16 and the explosion-proof device 15 to form a tertiary shaped-energy penetrator that penetrates the hard rock and soil layer again. The follow-up projectile explodes to form a penetration pit.

[0030] The explosive-type overburden hole-opening, tandem-following digger provided by the present invention is generally bullet-shaped and can be deployed from a booster or aircraft to generate a certain initial kinetic energy. The shaped charge fuze 13 is an intelligent fuze, as is the projectile fuze 24. After the tandem-following digger penetrates the overburden, the first compartment achieves primary penetration. Sequential activation of the shaped charge fuze 13 and projectile fuze 24 achieves secondary and tertiary penetration, ultimately resulting in a penetration crater formed by the explosion of the accompanying projectile. The method for generating initial kinetic energy for explosive-type overburden hole-opening, tandem-following diggers is conventional, as is the intelligent fuze, and will not be further elaborated.

[0031] The tandem follow-up digger of the present invention detonates after passing through the overburden, and the jet channel contains no other obstructing substances, ultimately achieving efficient penetration. The specific principle is that a first cabin specifically for penetrating the overburden is added in front of the tandem follow-up digger as a damage cabin, effectively avoiding the influence of the overburden on the tandem follow-up digger, so that the shaped jet formed by the shaped charge in the second cabin 11 can effectively damage the rock mass, weaken the rock mass strength, and increase the final penetration depth of the subsequent follow-up projectile; the design of the first cabin of the present invention uses the load applied to the first cabin by the overburden to trigger the movement of the slider 3, push open the front end of the warhead 1, and provide a forming space for the subsequent jet, and the secondary penetrator has a good forming effect, which can enable the subsequent follow-up projectile to obtain a deeper penetration depth, while avoiding the subsequent follow-up projectile from exploding and breaking in advance and weakening the damage effect.

[0032] The guide rail locator 6 is a frusto-conical housing with an open rear end. Its front end has a smaller outer diameter than its rear end. The rear end of the guide rail locator 6 is threadedly connected to the rear end of the first housing 7. A blind hole is provided in the middle of the front end of the guide rail locator 6, into which the guide rail 5 is inserted. The guide rail locator 6 positions the guide rail 5 and simultaneously forms a cavity at the front end of the liner 8. This allows the detonation products of the shaped charge to press against the liner 8 after detonation, leaving ample space for the jet to form.

[0033] The umbrella-like rib structure includes multiple inclined support beams 4, distributed around the periphery of the slider 3 and individually connected to the slider 3. Each support beam 4 has a front end connected to the slider 3 and a rear end connected to the first housing 7. In one embodiment of the present invention, an annular groove is provided in the middle of the inner wall of the first housing 7, and the rear end of each support beam 4 is inserted into the annular groove. The rear end of each support beam 4 is then welded to the first housing 7.

[0034] The connecting member 2 is a rivet, and the bullet 1 and the first shell 7 are connected by the rivet. The rivet is anchored between the bullet 1 and the through hole wall in the middle of the front end of the first shell 7.

[0035] The first cabin body is threadedly connected to the second cabin body 11 , the second cabin body 11 is threadedly connected to the third cabin body 26 , and the third cabin body 26 is threadedly connected to the fourth cabin body 23 .

[0036] The second cabin body 11 is a tubular structure with two ends open. The front end of the second cabin body 11 is connected to the first shell 7, and the rear end is connected to the third cabin body 26. The liner 8 is arranged at the front end of the second cabin body 11. The liner 8 is a shell structure with an open front end. The liner 8 and the guide rail positioner 6 form a closed shell. The closed shell closes the front end opening of the second cabin body 11, and the energy-gathering positioner 14 closes the rear end opening of the second cabin body 11.

[0037] The shaped charge includes a shaped charge main charge 9, a shaped charge partition 10 and a shaped charge auxiliary charge 12. The shaped charge auxiliary charge 12 is arranged on the front end surface of the shaped charge positioner 14. The shaped charge main charge 9 is filled between the charge liner 8 and the shaped charge auxiliary charge 12. The shaped charge partition 10 is arranged between the shaped charge main charge 9 and the shaped charge auxiliary charge 12. The shaped charge fuze 13 is arranged in the middle of the rear end of the shaped charge auxiliary charge 12. When in use, the length of the cover layer can be set to the optimal explosion height of the shaped charge, and the fuze path of the shaped charge is arranged between the warhead 1 and the slider 3, so that the shaped charge is detonated at the optimal explosion height.

[0038] The shaped charge separator 10 is a disc-shaped structure with a conical boss on its front end, with the top corner of the conical boss facing the front center of the warhead 1. The shaped charge separator 10 changes the detonation wave waveform, making the direction of the detonation wave compression load on the liner 8 more concentrated and uniform.

[0039] The fourth cabin body 23 is a tubular structure with an open front end as a whole. The rear end of the fourth cabin body 23 is closed. A support sleeve 22 with an open front end is provided inside the fourth cabin body 23. The support sleeve 22 is arranged in the middle of the tubular cavity of the fourth cabin body 23 through a support frame 20, and the rear end of the support sleeve 22 is closed; the rear end of the following projectile is inserted into the support sleeve 22, and the front end of the following projectile is inserted into the rear end opening of the explosion-proof inner cabin 16.

[0040] The following projectile includes a projectile shell 19, a buffer layer 18, a projectile charge 21, a projectile fuze 24 and a projectile base 25. The buffer layer 18 is filled at the front end of the projectile shell 19, the projectile base 25 is fixedly connected to the rear end of the projectile shell 19, the projectile charge 21 is filled between the buffer layer 18 and the projectile base 25, and the projectile fuze 24 is arranged in the middle of the rear end of the projectile charge 21; the front end of the projectile shell 19 has an outer conical surface, and the rear end opening of the explosion-proof inner cabin 16 is sleeved on the outer conical surface of the front end of the projectile shell 19.

[0041] The support sleeve 22 is provided with a plurality of slots on the outer circumferential wall, and the fourth cabin body 23 is provided with a plurality of through slots, and the plurality of through slots correspond one-to-one to the plurality of slots. The support frame 20 includes a plurality of support rods, and one end of each support rod is inserted into a slot on the outer circumferential wall of the support sleeve 22, and the other end is inserted into the corresponding through slot on the circumferential wall of the fourth cabin body 23.

[0042] The present invention adopts a split design, and the connections between each cabin are all threaded connections. Secondary development can be carried out according to actual needs, and it has good adaptability; the explosion-proof inner cabin 16 plays a centering role on the head of the subsequent follow-up projectile. In specific implementation, the hard contact is changed to soft contact through the gasket 17, which can avoid deformation of the subsequent projectile shell 19 caused by the explosion of the shaped charge and affect the penetration effect; the explosion-proof inner cabin 16, gasket 17, support frame 20 and support sleeve 22 jointly complete the centering positioning requirements of the subsequent follow-up projectile, and at the same time ensure the coaxiality of the follow-up projectile and the front-stage shaped charge in three stages; the support rod of the support frame 20, the support sleeve 22 and the fourth cabin 23 are connected by mortise and tenon joints, which meet the precision requirements of the centering coaxiality of the follow-up projectile. The mortise and tenon joints are convenient for workpiece processing and easy to implement a convenient installation process.

[0043] The parts not described in detail in this invention are prior art.

Claims

1. An umbrella-like soil cover hole opening and serially connected follow-up digging device, comprising a first cabin, a second cabin (11), a third cabin (26) and a fourth cabin (23) which are sequentially threaded from front to back, and is characterized by: The first cabin comprises a warhead (1) and a first shell (7), the warhead (1) comprises a front end tip and a rear end connection portion, and the connection portion and the tip are integrally formed; the outer surface of the first shell (7) is front streamlined as a whole, a through hole is provided in the middle of the front end of the first shell (7), the connection portion of the warhead (1) is inserted into the through hole of the first shell (7), and the connection portion of the warhead (1) is connected to one side of the first shell (7) through a connection piece (2), and the tip of the warhead (1) and the outer surface of the first shell (7) are smoothly transitioned; a guide rail positioner (6) is provided at the rear end of the interior of the first shell (7), the front end of the guide rail positioner (6) is connected to a guide rail (5), a slider (3) is slidably connected to the guide rail (5), and the slider (3) is connected to the inner wall of the first shell (7) through an umbrella-like rib structure; the front end of the guide rail (5) abuts against the rear end of the connection portion of the warhead (1); The rear end of the second cabin (11) is provided with a shaped charge positioner (14), which separates the inner cavity of the second cabin (11) from the inner cavity of the third cabin (26); a charge liner (8), a shaped charge and a shaped charge fuze (13) are provided inside the second cabin (11), and the charge liner (8) separates the inner cavity of the second cabin (11) from the inner cavity of the first shell (7); after the first cabin penetrates the covering layer to form a cavity, the shaped charge fuze (13) is detonated to detonate the shaped charge, and when the shaped charge explodes, it squeezes the charge liner (8) and the guide rail positioner (6), forming a secondary shaped charge penetrator to damage the hard rock layer; The third cabin (26) is provided with a flameproof device (15), a flameproof inner cabin (16) is provided at the rear end of the flameproof device (15), and the rear end of the flameproof inner cabin (16) extends into the interior of the fourth cabin (23); The fourth cabin (23) is provided with a follow-up projectile, the front end of which is docked with the rear end of the flameproof inner cabin (16). After the secondary shaped-energy penetrator damages the hard rock and soil layer, the follow-up projectile squeezes the flameproof inner cabin (16) and the flameproof device (15), forming a tertiary shaped-energy penetrator that penetrates the hard rock and soil layer again, and the follow-up projectile explodes to form a penetration pit.

2. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 1 is characterized in that: The guide rail positioner (6) is a cone-shaped shell with an open rear end. The outer diameter of the front end is smaller than the outer diameter of the rear end. The rear end of the guide rail positioner (6) is threadedly connected to the rear end of the first shell (7). A blind hole is provided in the middle of the front end surface of the guide rail positioner (6), and the rear end of the guide rail (5) is inserted into the blind hole. The outer wall of the rear end of the guide rail (5) is also provided with an annular positioning boss, which conflicts with the opening of the blind hole.

3. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 1 is characterized in that: The umbrella-like rib structure comprises a plurality of inclined support beams (4), the plurality of support beams (4) being evenly distributed on the periphery of the slider (3) and respectively connected to the slider (3); each support beam (4) is connected to the slider (3) at its front end and to the first shell (7) at its rear end.

4. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 3 is characterized by: An annular groove is provided in the middle of the inner wall of the first shell (7), and the rear end of each support beam (4) is fixed in the annular groove.

5. The umbrella-like soil layer hole-opening and serially-connected digging device according to claim 1 is characterized in that: The connecting member (2) is a rivet, and the bullet (1) and the first shell (7) are connected via the rivet.

6. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 1 is characterized in that: The slider (3) and the guide rail (5) are both hollow straight rod structures with rectangular cross-sections, and the slider (3) is sleeved on the outside of the guide rail (5).

7. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 1 is characterized by: The second cabin (11) is a tubular structure with two ends open. The front end of the second cabin (11) is connected to the first shell (7), and the rear end is connected to the third cabin (26). The liner (8) is arranged at the front end of the second cabin (11). The liner (8) is a shell structure with a front end open. The liner (8) and the guide rail positioner (6) form a closed shell. The closed shell closes the front end opening of the second cabin (11), and the energy-gathering positioner (14) closes the rear end opening of the second cabin (11). The shaped charge comprises a shaped charge main charge (9), a shaped charge partition (10) and a shaped charge auxiliary charge (12), the shaped charge auxiliary charge (12) being arranged on the front end surface of the shaped charge positioner (14), the shaped charge main charge (9) being filled between the charge liner (8) and the shaped charge auxiliary charge (12), and the shaped charge partition (10) being arranged between the shaped charge main charge (9) and the shaped charge auxiliary charge (12); the shaped charge fuze (13) being arranged at the middle of the rear end of the shaped charge auxiliary charge (12); The shaped charge partition (10) is a disc-shaped structure having a conical boss on its front end surface, and the top corner of the conical boss faces the front end center of the warhead (1).

8. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 1 is characterized by: The fourth cabin (23) is a tubular structure with an open front end and a closed rear end. A support sleeve (22) with an open front end and a closed rear end is provided inside the fourth cabin (23). The support sleeve (22) is arranged in the middle of the tubular cavity of the fourth cabin (23) through a support frame (20). The rear end of the follow-up projectile is inserted into the support sleeve (22), and the front end is inserted into the rear end opening of the flameproof inner cabin (16).

9. The umbrella-like soil layer hole-opening and serially-connected digging device according to claim 8 is characterized by: The following projectile comprises a projectile shell (19), a buffer layer (18), a projectile charge (21), a projectile fuze (24) and a projectile base (25), wherein the buffer layer (18) is filled at the front end of the projectile shell (19), the projectile base (25) is fixedly connected to the rear end of the projectile shell (19), the projectile charge (21) is filled between the buffer layer (18) and the projectile base (25), and the projectile fuze (24) is arranged at the middle of the rear end of the projectile charge (21); the front end of the projectile shell (19) has an outer conical surface, and the rear end opening of the flameproof inner cabin (16) is sleeved on the outer conical surface of the front end of the projectile shell (19).

10. The umbrella-like soil layer hole-opening and serially advancing digging device according to claim 8, characterized in that: The outer circumferential wall of the support sleeve (22) is provided with a plurality of slots, the circumferential wall of the fourth cabin (23) is provided with a plurality of through slots, and the plurality of through slots correspond one to one with the plurality of slots. The support frame (20) includes a plurality of support rods, one end of each support rod is inserted into a slot on the outer circumferential wall of the support sleeve (22), and the other end is inserted into a corresponding through slot on the circumferential wall of the fourth cabin (23).

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