Umbrella-rib-like overburden layer trepanning serial follow-in hole digging device

Abstract

The invention relates to the technical field of mining machinery, in particular to a blasting type tunneling device, in particular to a rib-like overburden layer trepanning series follow-in hole digger which comprises a first cabin, a second cabin, a third cabin and a fourth cabin, the first cabin comprises a bullet and a first shell, and a guide rail positioner is arranged at the rear end in the first shell; the front end of the guide rail positioner is connected with a guide rail which is slidably connected with a sliding block, and the sliding block is connected with the inner wall of the first shell through a rib-like structure. The front end of the guide rail abuts against the rear end of the connecting part of the bullet. A shaped charge cover, a shaped charge and a shaped charge fuze are arranged in the second cabin body, an explosive-proof device is arranged in the third cabin body, and follow-up projectiles are arranged in the fourth cabin body. Holes are formed in an overburden layer through the first cabin body, the sliding block is triggered to move through the load applied to the first cabin body by the overburden layer, the bullet at the front end is jacked open, enough forming space is provided for follow-up jet flow, the follow-up jet flow penetration depth is increased, efficient rock mass penetration is achieved, and blasting and hole digging are implemented.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery, in particular to a blasting tunneling device, specifically a kind of umbrella-bone-like soil-covered layer hole-opening series progressive pit-digging device. Background Technique

[0002] When mining a mine, large power machinery tunneling or a blasting tunneling device is usually used to dig a pit. The blasting tunneling device is often used in mine environments where large equipment cannot enter. Since there is often a soil-covered layer on the surface of the mine, and some soil-covered layers are relatively thick, for the blasting tunneling device to obtain a relatively large pit opening on the rock mass, it is necessary to first remove the soil-covered layer on the rock mass or open a hole in the soil-covered layer, then drill a hole in the rock mass, and finally send the blasting device into the hole for blasting. In a mine environment where large power machinery cannot enter, the cleaning of the soil-covered layer is obviously mainly manual, and a relatively thick soil-covered layer will consume a large amount of manpower and material resources; and when opening a deep hole in a relatively thick soil-covered layer, there are also similar problems. Based on the above considerations, in order to save labor and improve efficiency, it is necessary to develop a new pit-digging method to solve the above problems. Summary of the Invention

[0003] Aiming at the problems raised in the background technique, the purpose of the present invention is to propose an umbrella-bone-like soil-covered layer hole-opening series progressive pit-digging device, which adopts multi-stage charging and multi-stage cabins, combines the process characteristics of the projectile penetrating the soil-covered layer and the rock mass, and realizes the continuous operation of opening a hole in the soil-covered layer and blasting and digging a pit in the rock mass; a kind of umbrella-bone structure, a slider and a guide rail are designed inside the first cabin of the present invention. The first cabin realizes opening a hole in the soil-covered layer, uses the load applied by the soil-covered layer to the first cabin to trigger the movement of the slider, pushes open the front warhead, provides enough forming space for the subsequent jet, improves the penetration depth of the subsequent jet, and finally realizes efficient penetration of the rock mass and implementation of blasting and digging a pit.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: The umbrella-bone-like soil-covered layer hole-opening series progressive pit-digging device includes a first cabin, a second cabin, a third cabin and a fourth cabin that are threadedly connected in sequence from front to back. The first cabin includes a warhead and a first shell. The warhead includes a pointed part at the front end and a connecting part at the rear end, and the connecting part and the pointed part are integrally fixed; the outer surface of the first shell is overall in a front streamline shape, and a through hole is opened in the middle of the front end of the first shell. The connecting part of the warhead is inserted into the through hole of the first shell, and the connecting part of the warhead is connected to one side of the first shell through a connecting piece. The pointed part of the warhead is smoothly transitioned with the outer surface of the first shell; a guide rail locator is provided at the rear end inside the first shell, 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 through an umbrella-bone-like structure; the front end of the guide rail abuts against the rear end of the connecting part of the warhead; A shaped charge positioner is provided at the rear end of the second cabin body, and the shaped charge positioner separates the inner cavity of the second cabin body from the inner cavity of the third cabin body; a charge liner, a shaped charge and a shaped charge fuze are provided inside the second cabin body, and the charge liner separates the inner cavity of the second cabin body from the inner cavity of the first cabin body. After the first cabin body penetrates the covering layer to form a cavity, the shaped charge fuze is detonated to detonate the shaped charge, and when the shaped charge explodes, it squeezes the charge liner and the guide rail positioner to form a secondary shaped charge penetrator to damage the hard rock and soil layer; The third cabin is provided with a flameproof device, a flameproof inner cabin is provided at the rear end of the flameproof device, and the rear end of the flameproof inner cabin extends to the interior of the fourth cabin; The fourth cabin is provided with a follow-up projectile, the front end of which is connected to 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, which penetrates the hard rock and soil layer again, and the follow-up projectile explodes to form a penetration pit.

[0005] The guide rail locator is a frusto-conical shell with an open rear end as a whole, and its front end outer diameter is smaller than the rear end outer diameter. 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.

[0006] The umbrella-like rib structure comprises 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 has a front end connected to the slider and a rear end connected to the first shell.

[0007] An annular groove is provided in the middle of the inner wall of the first shell, and the rear end of each support beam is fixed in the annular groove.

[0008] The connecting piece is a rivet, and the connecting part of the bullet is connected to the first shell through the rivet.

[0009] The slider and the guide rail are both hollow straight rod structures with rectangular cross-sections, and the slider is sleeved outside the guide rail.

[0010] The second cabin body is a tubular structure with openings at both ends, the front end of the second cabin body is connected to the first shell body, and the rear end is connected to the third cabin body; the liner is arranged at the front end inside the second cabin body, the liner is a shell structure with an opening at the front end, and 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; The shaped charge includes a main shaped charge, a shaped charge separator, and a secondary shaped charge. The secondary shaped charge is arranged on the front end face of the shaped charge locator. The main shaped charge is filled between the liner and the secondary shaped charge. The shaped charge separator is arranged between the main shaped charge and the secondary shaped charge. The shaped charge fuse is arranged in the middle of the rear end of the secondary shaped charge. The shaped charge separator is a disc-shaped structure with a conical boss on the front end face, and the apex angle of the conical boss faces the front center of the warhead.

[0011] The fourth cabin is a tubular structure with an open front end and a closed rear end. Inside the fourth cabin, there is a support sleeve with an open front end and a closed rear end. The support sleeve is arranged in the middle of the lumen of the fourth cabin through a support frame. The rear end of the follow-up projectile is inserted inside the support sleeve, and the front end is inserted inside the rear end opening of the explosion isolation inner cabin.

[0012] The follow-up projectile includes a projectile shell, a buffer layer, a projectile charge, a projectile fuse, and a projectile base. The buffer layer is filled in the front end inside the projectile shell. The projectile base is fixedly connected to the rear end inside the projectile shell. The projectile charge is filled between the buffer layer and the projectile base. The projectile fuse 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 isolation inner cabin is sleeved on the outer conical surface at the front end of the projectile shell.

[0013] A plurality of slots are arranged on the outer peripheral wall of the support sleeve, and a plurality of through slots are arranged on the circumferential wall of the fourth cabin. The plurality of through slots correspond to the plurality of slots one by one. The support frame includes a plurality of support rods. One end of each support rod is inserted into a slot on the outer peripheral wall of the support sleeve, and the other end is inserted into the corresponding through slot on the circumferential wall of the fourth cabin.

[0014] The present invention has the following beneficial effects: The present invention effectively deals with the influence on the series follow-up digging device when penetrating the overburden layer through the first cabin. The slider connected by the umbrella bone-like structure and the warhead connected by rivets cause the umbrella bone-like structure to contract after the first cabin is squeezed by the overburden layer, pushing the slider and colliding with the warhead, causing the warhead to deviate from the jet penetration trajectory, avoiding hindrance 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 that the follow-up projectile of the rear stage explodes and breaks in advance, ensure the penetration and damage effect of the follow-up projectile of the rear stage, and achieve efficient penetration of the rock mass and implementation of blasting and digging. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a three-dimensional structure diagram of the umbrella bone-like structure, the slider, the guide rail, and the first shell.

[0017] Figure 3 It is a cross-sectional view of the umbrella bone-like structure and the slide rail.

[0018] In the figure: 1 - warhead, 2 - connecting piece, 3 - slider, 4 - support beam, 5 - guide rail, 6 - guide rail positioner, 7 - first housing, 8 - liner, 9 - main shaped charge, 10 - shaped charge partition, 11 - second cabin, 12 - secondary shaped charge, 13 - shaped charge fuse, 14 - shaped charge positioner, 15 - explosion isolation device, 16 - explosion isolation inner cabin, 17 - washer, 18 - buffer layer, 19 - projectile housing, 20 - support frame, 21 - projectile charge, 22 - support sleeve, 23 - fourth cabin, 24 - projectile fuse, 25 - projectile base, 26 - third cabin. Specific implementation mode

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] As Figures 1-3 shown, the present invention provides a kind of umbrella - bone - like soil - layer - opening series follow - up earth - digging device, which includes a first cabin, a second cabin 11, a third cabin 26 and a fourth cabin 23 that are sequentially thread - connected from front to back. The first cabin includes a warhead 1 and a first housing 7. The warhead 1 includes a tip at the front end and a connecting part at the rear end, and the connecting part and the tip are integrally formed. The outer surface of the first housing 7 is overall in a front - streamline shape. A through - hole is opened in the middle of the front end of the first housing 7. The connecting part of the warhead 1 is inserted into the through - hole of the first housing 7, and the connecting part of the warhead 1 and one side of the first housing 7 are connected by a connecting piece 2. The tip of the warhead 1 and the outer surface of the first housing 7 are smoothly transitioned. A guide rail positioner 6 is provided at the rear end inside the first housing 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. The slider 3 is connected to the inner wall of the first housing 7 through an umbrella - bone - like structure. The front end of the guide rail 5 abuts against the rear end of the connecting part of the warhead 1. During the process of the first housing 7 penetrating the soil layer, it contracts under the pressure load, compresses the umbrella - bone - like structure. After the umbrella - bone - like structure is compressed and constricted, it pushes the slider 3 towards the warhead 1. Since the warhead 1 is connected to one side of the first housing 7, it is subjected to an asymmetric force, and then the warhead 1 deflects, without occupying the shaped charge jet in the subsequent jet channel for penetration. A shaped charge positioner 14 is provided at the rear end of the second cabin 11. The shaped charge positioner 14 separates the inner cavity of the second cabin 11 from the inner cavity of the third cabin 26. Inside the second cabin 11, there are a liner 8, a shaped charge and a shaped charge fuse 13. The liner 8 separates the inner cavity of the second cabin 11 from the inner cavity of the first housing 7. After the first cabin penetrates the soil layer to form a cavity, the shaped charge fuse 13 is detonated to detonate the shaped charge. When the shaped charge explodes, it squeezes the liner 8 and the guide rail positioner 6 to form a secondary shaped charge penetrator to damage the hard rock soil layer. An explosion isolation device 15 is provided inside the third cabin 26. An explosion isolation inner cabin 16 is provided at the rear end of the explosion isolation device 15, and the rear end of the explosion isolation inner cabin 16 extends into the interior of the fourth cabin 23. The explosion isolation device 15 prevents the detonation wave generated by the detonation of the front-stage shaped charge from spreading to the rear-stage follow-up projectile and detonating the projectile charge. A follow-up projectile is provided inside the fourth cabin 23. The front end of the follow-up projectile is docked with the rear end of the explosion isolation inner cabin 16. After the secondary shaped charge penetrator damages the hard rock and soil layer, the follow-up projectile squeezes the explosion isolation inner cabin 16 and the explosion isolation device 15 to form a tertiary shaped charge penetrator to penetrate the hard rock and soil layer again, and the follow-up projectile explodes to form a penetration crater.

[0021] The blasting-type soil layer opening series follow-up digging device provided by the present invention is in an overall shape of a warhead, and a certain initial kinetic energy can be obtained by using a booster or an aircraft delivery method. The shaped charge fuse 13 is an intelligent fuse, and the projectile fuse 24 also uses an intelligent fuse. After the series follow-up digging device penetrates the soil layer, the first cabin forms a primary penetration, and secondary and tertiary penetrations are obtained by sequentially activating the shaped charge fuse 13 and the projectile fuse 24. Finally, the follow-up projectile explodes to form a penetration crater. The method for the blasting-type soil layer opening series follow-up digging device to obtain the initial kinetic energy is a prior art, and the intelligent fuse is also a prior art, which will not be elaborated here.

[0022] The series follow-up digging device of the present invention detonates after passing through the soil layer, and there are no other obstructive substances inside the jet channel, so as to finally achieve efficient penetration. The specific principle is that a first cabin specifically for penetrating the soil layer is added in front of the series follow-up digging device as a damage cabin section, effectively avoiding the influence of the soil layer on the series follow-up digging device, so that the shaped charge jet formed by the shaped charge in the second cabin 11 can have an effective damage effect on the rock mass, weaken the strength of the rock mass, 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 by the soil layer to the first cabin to trigger the movement of the slider 3 and push open the front warhead 1 to provide a forming space for the subsequent jet, and the forming effect of the secondary penetrator is good, which can enable the subsequent follow-up projectile to obtain a deeper penetration depth, and at the same time avoid the premature explosion and fragmentation of the subsequent follow-up projectile and weaken the damage effect.

[0023] The guide rail locator 6 is an overall frustum-shaped shell with an open rear end, the outer diameter of its front end is smaller than that of the rear end, the rear end of the guide rail locator 6 is threadedly connected to the rear end inside the first shell 7, a blind hole is provided in the middle of the front end face of the guide rail locator 6, and the guide rail 5 is inserted in the blind hole. The guide rail locator 6 positions the position of the guide rail 5, and at the same time forms a cavity at the front end of the liner 8, so that the detonation products squeeze the liner 8 after the shaped charge detonates, enabling the jet to have enough space to form.

[0024] The umbrella-like rib structure includes a plurality of inclined support beams 4, and the plurality of support beams 4 are distributed on the outer periphery of the slider 3 and are respectively connected to the slider 3; the front end of each support beam 4 is connected to the slider 3, and the rear end is connected to the first housing 7. In an embodiment of the present invention, a circular 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 circular groove, and the rear end of the support beam 4 is fixedly welded to the first housing 7.

[0025] The connecting member 2 is a rivet, the warhead 1 is connected to the first housing 7 by a rivet, and the rivet is anchored between the hole walls of the through holes in the middle of the front end of the warhead 1 and the first housing 7.

[0026] The first cabin is threadedly connected to the second cabin 11, the second cabin 11 is threadedly connected to the third cabin 26, and the third cabin 26 is threadedly connected to the fourth cabin 23.

[0027] The second cabin 11 is a circular tubular structure with openings at both ends as a whole. The front end of the second cabin 11 is connected to the first housing 7, and the rear end is connected to the third cabin 26; the liner 8 is arranged at the front end inside the second cabin 11. The liner 8 is a housing structure with an opening at the front end as a whole, and the liner 8 and the rail locator 6 form a closed housing. The closed housing closes the front opening of the second cabin 11, and the shaped charge locator 14 closes the rear opening of the second cabin 11; The shaped charge includes a shaped charge main charge 9, a shaped charge partition 10 and a shaped charge secondary charge 12. The shaped charge secondary charge 12 is arranged on the front end face of the shaped charge locator 14. The shaped charge main charge 9 is filled between the liner 8 and the shaped charge secondary charge 12, and the shaped charge partition 10 is arranged between the shaped charge main charge 9 and the shaped charge secondary charge 12; the shaped charge fuse 13 is arranged in the middle of the rear end of the shaped charge secondary charge 12; during use, the length of the overburden layer can be set as the optimal detonation height of the shaped charge, and a fuse passage of the shaped charge is arranged between the warhead 1 and the slider 3, so that the shaped charge detonates at the optimal detonation height.

[0028] The shaped charge partition 10 is a disc-shaped structure with a conical boss on the front end face, and the apex angle of the conical boss faces the front center of the warhead 1. The shaped charge partition 10 changes the waveform of the detonation wave, making the direction of the extrusion load of the liner 8 by the detonation wave more concentrated and uniform.

[0029] The fourth cabin 23 is a tubular structure with an opening at the front end as a whole. The rear end of the fourth cabin 23 is closed. A support sleeve 22 with an opening at the front end is arranged inside the fourth cabin 23. The support sleeve 22 is arranged in the middle of the lumen of the fourth cabin 23 through a support frame 20, and the rear end of the support sleeve 22 is closed; the rear end of the follow-up projectile is inserted into the inside of the support sleeve 22, and the front end of the follow-up projectile is inserted into the rear opening of the explosion isolation inner cabin 16.

[0030] The follow-up projectile includes a projectile housing 19, a buffer layer 18, a projectile charge 21, a projectile fuse 24, and a projectile base 25. The buffer layer 18 is filled at the front end inside the projectile housing 19. The projectile base 25 is fixedly connected to the rear end inside the projectile housing 19. The projectile charge 21 is filled between the buffer layer 18 and the projectile base 25. The projectile fuse 24 is arranged in the middle at the rear end of the projectile charge 21. The front end of the projectile housing 19 has an outer conical surface, and the rear end opening of the explosion isolation inner cabin 16 is sleeved on the outer conical surface at the front end of the projectile housing 19.

[0031] A plurality of slots are provided on the outer peripheral wall of the support sleeve 22, and a plurality of through slots are provided on the circumferential wall of the fourth cabin body 23. The plurality of through slots correspond to the plurality of slots one by one. The support frame 20 includes a plurality of support rods. One end of each support rod is inserted into a slot on the outer peripheral 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.

[0032] The present invention adopts a split design, and the connection between each cabin body uses a threaded connection, which can be re-developed according to actual needs and has good adaptability. The explosion isolation inner cabin 16 plays a centering role in the head of the follow-up projectile at the rear stage. During specific implementation, the hard contact is changed to soft contact through the washer 17, which can avoid the deformation of the projectile housing 19 at the rear stage caused by the explosion of the shaped charge and affect the penetration effect. The explosion isolation inner cabin 16, the washer 17, the support frame 20, and the support sleeve 22 jointly complete the centering and positioning requirements of the follow-up projectile at the rear stage, and at the same time ensure the coaxiality of the follow-up projectile and the front-stage shaped charge in a three-stage manner. The support rods of the support frame 20, the support sleeve 22, and the fourth cabin body 23 are connected by mortise and tenon joints, which can meet the accuracy requirements of centering and coaxiality of the follow-up projectile at the same time. The mortise and tenon joints are convenient for workpiece processing and easy to implement a convenient installation process.

[0033] The parts not detailed in the present invention are prior art.

Claims

1. Umbrella-bone-like soil layer perforating and series-connected follow-up digging tool, comprising a first cabin, a second cabin (11), a third cabin (26) and a fourth cabin (23) that are threadedly connected in sequence from front to back, characterized in that: The first cabin comprises a warhead (1) and a first housing (7). The warhead (1) comprises a front tip and a rear connecting part, and the connecting part and the tip are integrally formed. The outer surface of the first housing (7) is overall in a front streamline shape. A through hole is provided in the middle of the front end of the first housing (7). The connecting part of the warhead (1) is inserted into the through hole of the first housing (7), and the connecting part of the warhead (1) is connected to one side of the first housing (7) through a connecting piece (2). The tip of the warhead (1) is in smooth transition with the outer surface of the first housing (7). A guide rail locator (6) is provided at the rear end inside the first housing (7). 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). The slider (3) is connected to the inner wall of the first housing (7) through an umbrella-bone-like structure. The front end of the guide rail (5) abuts against the rear end of the connecting part of the warhead (1); A shaped charge locator (14) is provided at the rear end of the second cabin (11). The shaped charge locator (14) 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 fuse (13) are provided inside the second cabin (11). The liner (8) separates the inner cavity of the second cabin (11) from the inner cavity of the first housing (7). After the first cabin penetrates the soil layer to form a cavity, the shaped charge fuse (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 soil layer; An explosion isolation device (15) is provided inside the third cabin (26). An explosion isolation inner cabin (16) is provided at the rear end of the explosion isolation device (15). The rear end of the explosion isolation inner cabin (16) extends into the fourth cabin (23); A follow-up projectile is provided inside the fourth cabin (23). The front end of the follow-up projectile is butted against the rear end of the explosion isolation inner cabin (16). After the secondary shaped charge penetrator damages the hard rock soil layer, the follow-up projectile squeezes the explosion isolation inner cabin (16) and the explosion isolation device (15) to form a tertiary shaped charge penetrator to penetrate the hard rock soil layer again, and the follow-up projectile explodes to form a penetration pit; 2. The umbrella-bone-like soil layer opening series-connected follow-up pit digger according to claim 1, characterized in that: The guide rail locator (6) is an overall frustum-shaped shell with an open rear end, the outer diameter of its front end is smaller than that of the rear end. The rear end of the guide rail locator (6) is threadedly connected to the rear end inside the first housing (7). A blind hole is provided in the middle of the front end face of the guide rail locator (6). The rear end of the guide rail (5) is inserted into the blind hole. An annular positioning boss is further provided on the outer wall of the rear part of the guide rail (5), and the annular positioning boss abuts against the orifice of the blind hole; 3. The umbrella-bone-like soil layer perforating series progressive pit digging tool according to claim 1, characterized in that: The umbrella-bone-like structure comprises a plurality of inclined support beams (4). The plurality of support beams (4) are evenly distributed on the outer periphery of the slider (3) and are respectively connected to the slider (3); each support beam (4) is connected to the slider (3) at the front end and the first housing (7) at the rear end.

4. The umbrella rib-like soil layer opening series follow-up pit digger according to claim 3, characterized in that: 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 fixed in the annular groove.

5. The umbrella rib-like soil layer opening series follow-in pit digger according to claim 1, characterized in that: The connecting member (2) is a rivet, and the warhead (1) is connected to the first housing (7) by the rivet.

6. The umbrella-bone-like soil layer opening series-connected follow-up pit digger according to claim 1, characterized in that: Both the slider (3) and the guide rail (5) are hollow straight rod-shaped structures with a rectangular cross-section, and the slider (3) is sleeved outside the guide rail (5).

7. The umbrella-bone-like soil layer perforating and series-connected follow-up pit digger according to claim 1, characterized in that: The second cabin (11) is an overall circular tubular structure with openings at both ends. The front end of the second cabin (11) is connected to the first housing (7), and the rear end is connected to the third cabin (26); the liner (8) is arranged at the front end inside the second cabin (11). The liner (8) is an overall housing structure with an opening at the front end, and the liner (8) and the guide rail locator (6) form a closed housing. The closed housing closes the front opening of the second cabin (11), and the shaped charge locator (14) closes the rear opening of the second cabin (11); The shaped charge includes a shaped charge main charge (9), a shaped charge partition (10), and a shaped charge secondary charge (12). The shaped charge secondary charge (12) is arranged on the front end face of the shaped charge locator (14). The shaped charge main charge (9) is filled between the liner (8) and the shaped charge secondary charge (12), and the shaped charge partition (10) is arranged between the shaped charge main charge (9) and the shaped charge secondary charge (12); the shaped charge fuse (13) is arranged in the middle of the rear end of the shaped charge secondary charge (12); The shaped charge partition (10) is a disc-shaped structure with a conical boss on the front end face, and the apex angle of the conical boss faces the front center of the warhead (1).

8. The umbrella-bone-like soil layer perforating and series-connected progressive pit digger according to claim 1, characterized in that: The fourth cabin (23) is an overall tubular structure with an opening at the front end and a closed rear end. Inside the fourth cabin (23), there is a support sleeve (22) with an opening at the front end and a closed rear end. The support sleeve (22) is arranged in the middle of the lumen of the fourth cabin (23) through a support frame (20); the rear end of the follow-through projectile is inserted inside the support sleeve (22), and the front end is inserted into the rear opening of the explosion isolation inner cabin (16).

9. The umbrella rib type soil layer opening series follow - up pit digger according to claim 8, characterized in that: The follow-through projectile includes a projectile shell (19), a buffer layer (18), a projectile charge (21), a projectile fuse (24), and a projectile base (25). The buffer layer (18) is filled in the front end inside the projectile shell (19). The projectile base (25) is fixedly connected to the rear end inside the projectile shell (19). The projectile charge (21) is filled between the buffer layer (18) and the projectile base (25). The projectile fuse (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 opening of the explosion isolation inner cabin (16) is sleeved on the outer conical surface at the front end of the projectile shell (19).

10. The umbrella rib type soil layer opening series follow - up pit digger according to claim 8, characterized in that: A plurality of slots are provided on the outer peripheral wall of the support sleeve (22), and a plurality of through slots are provided on the circumferential wall of the fourth cabin (23). The plurality of through slots correspond to the plurality of slots one by one. The support frame (20) includes a plurality of support rods. One end of each support rod is inserted into a slot on the outer peripheral 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 (23).

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