CN113587756A - Multi-point detonation source differential delay detonation simulation device - Google Patents
Multi-point detonation source differential delay detonation simulation device Download PDFInfo
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- CN113587756A CN113587756A CN202111002308.6A CN202111002308A CN113587756A CN 113587756 A CN113587756 A CN 113587756A CN 202111002308 A CN202111002308 A CN 202111002308A CN 113587756 A CN113587756 A CN 113587756A
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- 238000004088 simulation Methods 0.000 title claims abstract description 26
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- 239000011521 glass Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000000523 sample Substances 0.000 claims abstract description 19
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
- F42D1/05—Electric circuits for blasting
- F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay
Abstract
The invention discloses a multi-point detonation source differential delay detonation simulation device which comprises a protective cover, a connecting piece, a detonation wire, a stainless steel pipe, an electric detonator, a black cord, a detonator, a detonation delay detection device, a flexible detonating cord and a single-point die detonation device. Each path of detonating cord penetrates through the stainless steel tube to be isolated and protected from each other, one end of each path of single-point mold explosion device is connected with each path of single-point mold explosion device, the other end of each path of single-point mold explosion device is connected with the conical end of each path of electric detonator, and the other end of each electric detonator is connected with the same initiator; each path of flexible detonating cord is connected with the electric detonator through a connecting piece, and a small amount of black cord metal powder can be added at the conical end part of the electric detonator to ensure that the flexible detonating cord is fully detonated. One end of each path of ion electric probe is connected with each path of detonating fuse, and the other end is connected with the oscilloscope through a pulse forming network. The single-point mold explosion device comprises a glass cover, a detonating cord, a steel pipe, a sealing plug and an air pressure adjusting device. The multi-point detonation source differential delay detonation simulation device can be used for simulating the large-equivalent underground detonation cratering effect, and is simple to operate, high in detonation controllability and high in differential delay precision.
Description
Technical Field
The invention belongs to the field of engineering blasting research, and particularly relates to a micro-difference delay detonation simulation device for a multipoint detonation source.
Background
The underground differential time-delay blasting can effectively control blasting shock waves, vibration, noise and flying stones; the operation is simple, safe and rapid; can be broken by fire without causing damage; the crushing degree is good, and the blasting efficiency and the technical and economic benefits can be improved. Therefore, the differential delay blasting is widely applied to rock foundation excavation, ditch excavation and building and foundation demolition. For a damage target, namely a natural rock mass, the movement, deformation and damage of the rock under the action of explosion are very complex, the mechanical parameter calculation is difficult to complete through theoretical analysis, the field test research period is long, the test risk is high, huge manpower and material resources are consumed, the repeatability is poor, and the system research is difficult to develop.
The simulation method is widely applied to different scientific fields, and the method adopting similar physical simulation tests can simulate the influence of various influencing factors on the formation of the crater and the bulge in the large-equivalent underground blasting process, so that people can more easily and comprehensively master the movement, deformation and destruction characteristics of the rock mass in the blasting process, and the method is an effective method for researching the underground blasting problem.
The current research shows that the vacuum chamber explosion model test device has obvious advantages in simulation of the large-equivalent large-buried depth underground explosion cratering phenomenon due to strong controllability and wide simulation application range. The detonation source is a key device for simulating the explosion of the vacuum chamber, in the existing detonation source scheme, the Russian realizes the detonation mainly by a method of heating a nickel-chromium wire by a low-voltage power supply to crack a rubber airbag, the detonation time cannot be accurately controlled, only single-point detonation is realized, and a mature technical method is lacked for controlling the differential delay accurate detonation of a multi-point detonation source.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a differential delay detonation simulation device for a multi-point detonation source so as to solve the problem that the multi-point detonation source in the current vacuum chamber detonation simulation test device cannot be controlled accurately by differential delay detonation.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a multi-point detonation source differential delay detonation simulation device comprises a detonator, a plurality of electric detonators connected with the detonator through detonating lines, a plurality of single-point mold detonation devices correspondingly connected with the electric detonators through detonating cables and detonation delay detection devices connected with the detonating cables;
one end of each electric detonator is conical; the detonating cords are isolated from each other and are connected with the conical ends of the electric detonators through first connecting pieces; the first connecting piece wraps the electric detonator;
the detonation delay detection device comprises ionic electric probes respectively connected with the detonating cords, and an oscilloscope connected with the ionic electric probes through the pulse forming network, wherein the oscilloscope is used for measuring and calculating the delay of the detonating cords of each path;
the single-point die explosion device is used for simulating single-point accurate detonation.
Further, explosive powder is arranged in the conical end of the electric detonator, and the electric detonator and the explosive powder are wrapped by the first connecting piece.
Further, the explosive powder is hexogen powder.
Further, the detonating cord is a flexible detonating cord, and the detonating cords are isolated and protected from each other by penetrating through the stainless steel tube.
Furthermore, the single-point mold explosion device comprises a glass cover correspondingly connected with each detonating cord and an air pressure adjusting device for adjusting the air pressure in the glass cover;
the lower end of the glass cover is opened and sealed by a sealing plug;
the detonating cord penetrates into the glass cover through the steel pipe, and the detonating cord and the penetrating end of the steel pipe are sealed;
the air pressure adjusting device comprises an air needle arranged in the sealing plug in a penetrating mode, an electromagnetic valve connected with the air needle through a second connecting piece, a pressure buffer connected with the electromagnetic valve and a power supply;
the pressure buffer is connected with an air compressor, a vacuum pump, a vacuum gauge and a pressure gauge through a ball valve; the pressure buffer is also provided with a pressure relief safety valve;
the electromagnetic valve is connected with the power supply through a switch, and the power supply is used for supplying power to the electromagnetic valve.
Furthermore, the tail end of the detonating cord in the single-point mold explosion device, which is positioned in the glass cover, is spiral.
Furthermore, the glass cover in the single-point mold explosion device is of a cavity structure and comprises any one of a sphere, a cylinder and a polygon.
Furthermore, the contact positions of the ionic electric probes of all paths and the detonating cord are kept consistent, and the lengths of all paths of detonating cords are consistent.
Further, the single-point die explosion device is a spherical or cylindrical trace explosive ball.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has the advantages that the plurality of electric detonators are arranged to detonate in a delayed manner, the detonation delay detection device is arranged to detect delay time difference and duration of detonation, the ionic electric probe, the pulse forming network and the oscilloscope are accurate in measurement, so that the test is accurate, and the electric detonators are wrapped by the first connecting piece, so that the sealing effect is better, and the device can be used for delayed detonation of a multi-point detonation source device in a large-equivalent underground detonation crater effect simulation experiment;
2. according to the invention, the explosive powder is arranged at the conical end part of the electric detonator so as to ensure the detonating of the detonating cord, and the controllability and the accuracy of the explosion time are higher.
Drawings
FIG. 1 is a schematic diagram of a detonation control system.
FIG. 2 is a schematic view of a single-point modular explosion apparatus.
In the figure:
1. an initiator; 2. a detonating cord; 3. a protective cover; 4. an electric detonator; 5. a first connecting member; 6. explosive powder; 7. a stainless steel tube; 8. a detonating cord; 9. an ionic electric probe; 10. a pulse forming network; 11. an oscilloscope; 12. a single-point die explosion device; 12-1, a glass cover; 12-2, the tail end of the detonating cord; 12-3, steel pipes; 12-4, a sealing plug; 12-5, air needle; 12-6, a second connecting piece; 12-7, an electromagnetic valve; 12-8, a battery; 12-9, a switch; 12-10 parts of a pressure gauge; 12-11, a pressure relief safety valve; 12-12, a pressure buffer; 12-13, ball valve; 12-14, a vacuum gauge; 12-15, an air compressor; 12-16 and a vacuum pump.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of describing the present embodiment and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, cannot be construed as limiting the present embodiment.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment provides a multi-point source differential delay detonation simulation device, which includes a detonator 1, a plurality of electric detonators 4 connected to the detonator 1 through detonating lines 2, a plurality of single-point modular explosion devices 12 correspondingly connected to the electric detonators 4 through detonating cables 8, and a detonation delay detection device connected to each detonating cable 8;
one end of each electric detonator 4 is conical; each path of detonating cord 8 is isolated from each other and is connected with the conical end of each electric detonator 4 through the first connecting piece 5; the first connecting piece 5 wraps the electric detonator 4;
the detonation delay detection device comprises ionic electric probes 9 respectively connected with the detonating cords 8 and an oscilloscope 11 connected with the ionic electric probes 9 through a pulse forming network 10, wherein the oscilloscope 11 is used for measuring and calculating the detonation delay of each path of detonating cord 8;
the single point detonation device 12 is used to simulate a single point accurate detonation.
The implementation principle is as follows: the method comprises the steps of firstly starting an initiator 1, starting each circuit of electric detonator 4 through an initiation line 2, igniting a detonating cord 8 by each circuit of electric detonator 4, starting a single-point die explosion device 12 by the detonating cord 8 along a preset route, simulating single-point precise initiation by the single-point die explosion device 12, receiving a signal by an ionic electric probe 9 connected to the detonating cord 8, transmitting the signal to an oscilloscope 11 through a pulse forming network 10, and displaying the time delay of initiation of each circuit of detonating cord 8.
The initiator 1, the electric detonators 4 and the single-point modular explosion devices 12 correspondingly connected with the electric detonators 4 can ensure the micro-differential delay initiation simulation of the multi-point detonation source, and the micro-differential delay initiation simulation of the multi-point detonation source is carried out by a method of starting the detonating cord 8 by respectively arranging the electric detonators 4.
The embodiment detects the delay difference and the time length of the explosion by arranging the detonation delay detection device. The ionic electric probe 9, the pulse forming network 10 and the oscilloscope 11 are accurate in measurement, so that the test is accurate, more accurate test data is obtained, and the method plays an important role in improving the accuracy of the simulation test.
Example two:
the embodiment provides a multi-point detonation source differential delay detonation simulation device, which comprises a detonator 1, a plurality of electric detonators 4 connected with the detonator 1 through detonating wires 2, a plurality of single-point modular detonation devices 12 correspondingly connected with the electric detonators 4 through detonating cables 8 and a detonation delay detection device connected with each detonating cable 8; one end of each electric detonator 4 is conical; each path of detonating cord 8 is isolated from each other and is connected with the conical end of each electric detonator 4 through the first connecting piece 5; the first connecting piece 5 wraps the electric detonator 4; the detonation delay detection device comprises ionic electric probes 9 respectively connected with the detonating cords 8 and an oscilloscope 11 connected with the ionic electric probes 9 through a pulse forming network 10, wherein the oscilloscope 11 is used for measuring and calculating the delay of the detonation of each path of detonating cord 8; the single-point modular explosion device 12 is used for simulating single-point accurate detonation.
The electric detonator 4 is characterized in that explosive powder 6 is arranged in the conical end of the electric detonator 4, and the electric detonator 4 and the explosive powder 6 are wrapped by the first connecting piece 5. The explosive powder 6 is arranged at the conical end part of the electric detonator 4 to ensure the detonating of the detonating cord 8, the controllability and the accuracy of the explosion time are higher, and the electric detonator 44 and the explosive powder 66 are wrapped by the first connecting piece 55, so that the sealing effect is better. Preferably, the explosive powder 6 is hexogen powder.
The detonating cord 8 is a flexible detonating cord 8, and the detonating cords 8 are isolated and protected from each other by penetrating in the stainless steel tube 7. The detonating cord 8 is flexible, which is more beneficial for the detonating cord 8 to be arranged in the single-point mold explosion device 12 and the electric detonator 4 in a penetrating way.
As shown in fig. 2, the single-point blasting apparatus 12 comprises a glass cover 12-1 connected to each explosion wire 8, and an air pressure adjusting means for adjusting the air pressure in the glass cover 12-1; the lower end of the glass cover 12-1 is opened and sealed by a sealing plug 12-4; the detonating cord 8 penetrates into the glass cover 12-1 through the steel pipe 12-3, and the penetrating ends of the detonating cord 8 and the steel pipe 12-3 are sealed; the air pressure adjusting device comprises an air needle 12-5 arranged in the sealing plug 12-4 in a penetrating mode, an electromagnetic valve 12-7 connected with the air needle 12-5 through a second connecting piece 12-6, a pressure buffer 12-12 connected with the electromagnetic valve 12-7 and a power supply; the pressure buffer 12-12 is connected with an air compressor 12-15, a vacuum pump 12-16, a vacuum gauge 12-14 and a pressure gauge 12-10 through a ball valve 12-13; the pressure buffer 12-12 is also provided with a pressure relief safety valve 12-11; the electromagnetic valve 12-7 is connected with the power supply through a switch 12-9, and the power supply is used for supplying power to the electromagnetic valve 12-7.
The ball valve 12-13 is used for controlling the connection or the disconnection of the air compressor 12-15 or the vacuum pump 12-16 and the pressure buffer 12-12; when the pressure buffer 12-12 is communicated with the second air compressor 12-15, the pressure gauge 12-10 is used for measuring the pressure in the pressure buffer 12-12, namely the pressure in the glass cover 12-1; the vacuum gauge 12-14 is used to measure the degree of vacuum in the pressure buffer 12-12, i.e., in the glass envelope 12-1, when the pressure buffer 12-12 is in communication with the vacuum pump 12-16; the battery 12-8 is connected with the electromagnetic valve 12-7 through the switch 12-9, and the battery 12-8 powers on or off the electromagnetic valve 12-7 through the switch 12-9 to control the opening and closing of the electromagnetic valve 12-7.
The electric detonator 4 and the first connecting piece 5 are both arranged in the protective cover 3, so that the damage to the surrounding environment caused by explosion shock waves is avoided.
The tail end of the detonating cord 8 positioned in the glass cover 12-1 is twisted into a spiral shape to increase the length of the detonating cord 8 at the center of the glass cover 12-1 and simultaneously ensure the spherical explosion effect of the detonating cord 8 which transmits shock waves to the periphery at the center of the glass cover 12-1. The detonating cord 8 may also be of other shapes.
The glass cover 12-1 may be a spherical, cylindrical, polygonal, or other shaped cavity structure.
The contact positions of the ionic electric probes 9 of all the paths and the detonating cord 8 are kept consistent, and the lengths of the detonating cords 8 of all the paths are consistent. The detection precision of the ionic electric probe 9 can be improved by the arrangement, and the measurement accuracy of the device is improved.
The single-point die-explosion device 12 can also be simplified into spherical, cylindrical or other-shaped trace explosive balls for the requirement of the test, thereby saving the cost and being suitable for various test conditions.
The device of the embodiment has the following working procedures:
when the test requires that the gas pressure in the glass cover 12-1 exceeds the atmospheric pressure, the vacuum pump 12-16 and the corresponding ball valve 12-13 on the vacuum gauge 12-14 are closed, the air compressor 12-15, the pressure gauge 12-10 and the starting switch 12-9 are opened, the pressure buffer 12-12 is inflated, the inflation is stopped when the required pressure is reached, the switch 12-9 is disconnected, and at the moment, a certain amount of gas is filled in the glass cover 12-1.
At the moment, the initiator 1 is started, each circuit of electric detonator 4 is started through the micro-difference delay of the initiation line 2, each circuit of electric detonator 4 ignites the explosive powder 6, the flexible detonating cord 8 embedded in the explosive powder 6 is detonated through the micro-difference, the detonating cord 8 starts the single-point die explosion device 12 along the preset route, the shock wave generated by the detonating cord 8 is used for striking the glass cullet 12-1 to achieve the purpose of releasing compressed gas, meanwhile, the ionic electric probe 9 connected in the stainless steel tube 7 transmits a signal into the pulse forming network 10 and then transmits the signal into the oscilloscope 11, and the delay accuracy of the multi-point detonation source is determined through the pulse time difference of the oscilloscope 11.
When the test requires that the gas pressure in the glass cover 12-1 is lower than the atmospheric pressure, the air compressor 12-15 and the corresponding ball valve 12-13 on the pressure gauge 12-10 are closed, the vacuum pump 12-16 and the corresponding ball valve 12-13 on the vacuum gauge 12-14 and the opening switch 12-9 are opened, the pressure buffer 12-12 is pumped, when the required vacuum degree is reached, the pumping is stopped, the switch 12-9 is closed, and at the moment, the inside of the glass cover 12-1 reaches a certain pressure.
At this time, the electric detonators 4 are detonated by the initiator 1 in a differential delay manner, so that the explosive powder 6 is detonated, the multiple paths of flexible detonating cords 8 embedded in the explosive powder 6 are detonated by the differential detonation, and the shock waves generated by the detonating cords 8 are detonated to break the glass cover 12-1, so that the purpose of releasing gas is achieved. Meanwhile, the ionic electric probe 9 in the stainless steel pipe 7 transmits a signal into the pulse forming network 10 and then transmits the signal into the oscilloscope 11, and the delay precision of the multipoint explosion source is determined through the pulse time difference of the oscilloscope 11.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (9)
1. A multi-point detonation source differential delay detonation simulation device is characterized by comprising a detonator (1), a plurality of electric detonators (4) connected with the detonator (1) through detonating wires (2), a plurality of single-point mold detonation devices (12) correspondingly connected with the electric detonators (4) through detonating cables (8) and detonation delay detection devices connected with the detonating cables (8);
one end of each electric detonator (4) is conical; each path of detonating cord (8) is isolated from each other and is connected with the conical end of each electric detonator (4) through a first connecting piece (5); the first connecting piece (5) wraps the electric detonator (4);
the detonation delay detection device comprises ionic electric probes (9) respectively connected with the detonating cords (8), and an oscilloscope (11) connected with the ionic electric probes (9) through the pulse forming network (10), wherein the oscilloscope (11) is used for measuring and calculating the detonation delay of each path of detonating cord (8);
the single-point die explosion device (12) is used for simulating single-point accurate detonation.
2. The multipoint-detonation source differential delay detonation simulation device according to claim 1, wherein explosive powder (6) is arranged in the conical end of the electric detonator (4), and the first connecting piece (5) wraps the electric detonator (4) and the explosive powder (6).
3. The differential delay detonation simulation device of claim 2, wherein the explosive powder (6) is hexogen powder.
4. The differential delay detonation simulation device with the multipoint detonation sources as claimed in claim 1, characterized in that the detonating cord (8) is a flexible detonating cord (8), and the detonating cords (8) are isolated and protected from each other by being arranged in stainless steel pipes (7) in a penetrating manner.
5. The differential delay detonation simulation device of the multipoint detonation source according to claim 1, characterized in that the single-point mold detonation device (12) comprises a glass cover (12-1) connected with each detonating cord (8) correspondingly and an air pressure adjusting device for adjusting the air pressure in the glass cover (12-1);
the lower end of the glass cover (12-1) is opened and sealed by a sealing plug (12-4);
the detonating cord (8) penetrates into the glass cover (12-1) through the steel pipe (12-3), and the penetrating ends of the detonating cord (8) and the steel pipe (12-3) are sealed;
the air pressure adjusting device comprises an air needle (12-5) arranged in the sealing plug (12-4) in a penetrating mode, an electromagnetic valve (12-7) connected with the air needle (12-5) through a second connecting piece (12-6), a pressure buffer (12-12) connected with the electromagnetic valve (12-7) and a power supply;
the pressure buffer (12-12) is connected with an air compressor (12-15), a vacuum pump (12-16), a vacuum gauge (12-14) and a pressure gauge (12-10) through a ball valve (12-13); the pressure buffer (12-12) is also provided with a pressure relief safety valve (12-11);
the electromagnetic valve (12-7) is connected with the power supply through a switch (12-9), and the power supply is used for supplying power to the electromagnetic valve (12-7).
6. The differential delay detonation simulator of claim 5, wherein the end of the detonating cord (8) in the glass cover (12-1) of the single-point detonation device (12) is helical.
7. The differential delay detonation simulation device of the multipoint detonation source according to the claim 5, characterized in that the glass cover (12-1) in the single-point mold detonation device (12) is of a cavity structure and comprises any one of a sphere, a cylinder and a polygon.
8. The multipoint detonation source differential delay detonation simulation device according to claim 1, wherein the contact positions of the ionic electric probes (9) of each path and the detonating cords (8) are kept consistent, and the lengths of the detonating cords (8) of each path are consistent.
9. The differential delay detonation simulation device of claim 1, wherein the single point detonation device (12) is a spherical or cylindrical micro explosive pellet.
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