CN212228975U - Hole implosion speed testing device for on-site mixed emulsion explosive - Google Patents
Hole implosion speed testing device for on-site mixed emulsion explosive Download PDFInfo
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- CN212228975U CN212228975U CN201922028068.1U CN201922028068U CN212228975U CN 212228975 U CN212228975 U CN 212228975U CN 201922028068 U CN201922028068 U CN 201922028068U CN 212228975 U CN212228975 U CN 212228975U
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Abstract
An in-hole explosion velocity testing device for on-site mixed emulsion explosives comprises an explosion velocity instrument, a testing probe, a balancing weight and a testing line; the test probe comprises a pipe fitting, and the outer walls of two ends of the pipe fitting are respectively provided with a load bearing hole and a weight balancing hole; the outer wall of the pipe fitting is circumferentially provided with a first target point fixing groove and a second target point fixing groove respectively, the first target point fixing groove and the second target point fixing groove are located between the bearing hole and the counterweight hole respectively, the first target point fixing groove is close to the bearing hole, and the second target point fixing groove is close to the counterweight hole. Because the detonation velocity is directly measured in the blast hole, the extra-hole test is not needed before blasting, the noise disturbing the people is avoided, and the working efficiency is improved.
Description
Technical Field
The utility model relates to a mine blasting field, concretely relates to on-spot muddy dress emulsification explosive is with downthehole detonation velocity testing arrangement.
Background
The explosive detonation velocity is one of indexes for directly reflecting the performance reliability of explosives, and the conventional mixed emulsion explosive detonation velocity test mainly adopts an ex-hole test, namely a probe method for testing, and has the following problems: 1, blasting noise disturbs citizen seriously; 2. after the explosive is loaded into the blast hole, due to the restriction effect of the hole wall, the explosion velocity of the explosive outside the hole cannot reflect the true explosion performance of the explosive in the blast hole; 3. the test process is complicated, and the potential safety hazard is big, needs in the car pharmacy process of loading in mixture, and after getting it filled with PVC pipe alone, the extraforaminous blasting test is carried out in alternative remote place, and the process is complicated, and the potential safety hazard is big. Foreign countries have a small number of in-hole detonation velocity meters, the equipment is complex to operate, inconvenient to carry and expensive, and the in-hole detonation velocity meters are generally used in scientific research projects and cannot be applied to the periodic test process of blasting operation units.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide an on-spot muddy dress emulsification explosive is with downthehole detonation velocity testing arrangement.
The specific technical scheme of the in-hole explosion velocity testing device for the on-site mixed emulsion explosive is as follows:
the utility model provides an on-spot muddy dress emulsification is downthehole explosion velocity testing arrangement for explosive which characterized in that: comprises an explosion velocity instrument (1), a test probe, a balancing weight (3) and a test wire;
the test probe comprises a pipe fitting (2), and the outer walls of two ends of the pipe fitting (2) are respectively provided with a bearing hole (4) and a balance weight hole (5);
a first target point fixing groove (6) and a second target point fixing groove (7) are respectively formed in the outer wall of the pipe fitting (2) along the circumferential direction, the first target point fixing groove (6) and the second target point fixing groove (7) are respectively located between the bearing hole (4) and the counterweight hole (5), the first target point fixing groove (6) is close to the bearing hole (4), and the second target point fixing groove (7) is close to the bearing hole (4);
a strip-shaped groove (11) is formed in the outer wall of the pipe fitting (2) along the axial direction, and two ends of the strip-shaped groove (11) are respectively communicated with the first target point fixing groove (6) and the second target point fixing groove (7);
the test line comprises a first target line (8), a second target line (9) and a common conducting wire (10);
the first target wire (8) and the common conducting wire (10) are twisted with each other in a twist shape to form a first measuring wire, and the first measuring wire is wound in the first target point fixing groove (6);
the second target wire (9) and the common conducting wire (10) are twisted with each other in a twist shape to form a second measuring wire, and the second measuring wire is wound in the second target point fixing groove (7);
the free ends of the first target wire (8), the second target wire (9) and the common lead (10) are respectively connected with a measurement port group of the detonation velocity instrument (1).
Further: target line fixing pieces (12) are respectively arranged at two ends in the strip-shaped groove (11).
Further: the counterweight hole (5) is connected with one end of a counterweight line, and the other end of the counterweight line is connected with a counterweight block.
Further: sealing devices are respectively arranged on the winding parts of the first measuring line and the second measuring line.
Further: the sealing device is a sealing adhesive tape.
The utility model has the advantages that: first, because directly carry out the detonation velocity survey in the blast hole, need not to adopt the extraforaminiferous test alone in addition before the blasting again, avoided the noise to disturb the people, improved work efficiency simultaneously.
Secondly, a test probe and a detonation velocity meter are adopted, the test probe comprises a pipe fitting, a first target point fixing groove and a second target point fixing groove are formed in the pipe fitting, the distance delta S between the lower end face of the first target point fixing groove and the lower end face of the second target point fixing groove is measured, when detonation waves explode, the time delta t between the detonation waves pass through the first target point fixing groove and the second target point fixing groove is measured, and the detonation waves pass through the time delta tAnd obtaining the explosion velocity in the hole.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is a schematic view of the present invention;
the figure numbers are illustrated as an explosion velocity instrument 1, a pipe fitting 2, a balancing weight 3, a bearing hole 4, a balance weight hole 5, a first target point fixing groove 6, a second target point fixing groove 7, a first target line 8, a second target line 9, a common lead 10, a strip-shaped groove 11, a target line fixing piece 12, a test hole 13, explosive 14, an initiator 15 and a fastening line 16.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
As shown in fig. 1 to 4: an in-hole explosion velocity testing device for on-site mixed emulsion explosives comprises an explosion velocity instrument 1, a testing probe, a balancing weight 3 and a testing line;
the test probe comprises a pipe fitting 2, the pipe fitting 2 adopts a PP-R pipe, and the outer walls of two ends of the pipe fitting 2 are respectively provided with a weight bearing hole 4 and a weight bearing hole 5;
one end of a counterweight line is connected in the counterweight hole 5, and the other end of the counterweight line is connected with the counterweight block 3.
A first target point fixing groove 6 and a second target point fixing groove 7 are respectively formed in the outer wall of the pipe fitting 2 along the circumferential direction, the first target point fixing groove 6 and the second target point fixing groove 7 are respectively located between the bearing hole 4 and the counterweight hole 5, the first target point fixing groove 6 is close to the bearing hole 4, the second target point fixing groove 7 is close to the bearing hole 4, and the width and the depth of the first target point fixing groove 6 and the second target point fixing groove 7 are about 1mm in the implementation;
a strip-shaped groove 11 is axially formed in the outer wall of the pipe fitting 2, and two ends of the strip-shaped groove 11 are respectively communicated with the first target point fixing groove 6 and the second target point fixing groove 7;
the test lines comprise a first target line 8, a second target line 9 and a common conducting line 10;
the first target wire 8 and the common lead 10 are twisted with each other in a twist shape to form a first measuring wire, the first measuring wire is wound in the first target point fixing groove 6, the second target wire 9 and the common lead 10 are twisted with each other in a twist shape to form a second measuring wire, the second measuring wire is wound in the second target point fixing groove 7, the number of winding turns is 2-3, and in the embodiment, the length range of the first measuring wire and the second measuring wire is 300-500 mm;
sealing devices are respectively arranged on the winding parts of the first measuring line and the second measuring line. Here, the sealing device employs a sealing tape, and the ends of the first target wire 8 and the second target wire 9 are respectively wound with the sealing tape to be insulated.
The two ends in the strip-shaped groove 11 are respectively provided with a target line fixing piece 12. The target line fixing plate 12 is used for limiting the first measuring line and the second measuring line.
The free ends of the first target line 8, the target line and the common conductor 10 are respectively connected with a measuring port group of the detonation velocity instrument 1.
The utility model discloses a theory of operation does: the detonation wave is generated when explosive explodes, huge heat is generated when the detonation wave is released, the detonation wave passes through a first test line wound in a first target point fixing groove, the first target line and a public wire are twisted in a twist shape, and therefore the skins of the first target line and the public wire in the first test line are melted, the first target line and the public wire are in short circuit, after a first electric signal is generated on a detonation velocity instrument, the heat carried by the detonation wave is huge, the first test line in the first target point fixing groove is burnt off instantly after the short circuit, and therefore the first test line cannot continuously generate the electric signal.
The detonation wave upwards passes through a second test wire wound in a second target point fixing groove, and the principle of generating an electric signal by the second test wire is the same as that of the first test wire. The detonation velocity meter acquires a second electrical signal.
Then using the formula:
in the formula, DCFor the error corrected actual hole detonation velocity value, Δ S is the distance between the first target point fixing groove and the second target point fixing groove, η is the measurement error, DpjMeasuring the obtained explosion velocity value in the hole;
and obtaining the explosion velocity value in the explosion hole.
By means of the formula,
and optimally selecting the distance between the first target point fixing groove and the second target point fixing groove. In the formula, ω is a unit measurement error. The larger the value of the distance deltas between the first target point fixing groove and the second target point fixing groove is, the smaller the detonation velocity error omega caused by the unit length is.
A working method of an in-hole explosion velocity testing device for on-site mixed emulsion explosives comprises the following steps:
s1: mutually twisting the first target wire 8 and the common conducting wire 10 in a twist shape to form a first measuring wire;
s2: winding 2-3 circles of the first measurement in a first target point fixing groove 6, fixing the first measurement in an insulating adhesive tape, and binding and insulating the end of the first target line by using the insulating adhesive tape;
s3: twisting a second target wire 9 and a common wire 10 in a twist shape to form a second measuring wire;
s4: winding the second measurement in a second target point fixing groove 7, fixing the second measurement by using an insulating tape, fixing the second measurement by using the insulating tape, and binding and insulating the end of the first target line by using the insulating tape;
s5: a fastening line 16 is arranged in the strip-shaped groove 11, and the fastening line 16 fastens the first measuring line and the second measuring line on the pipe fitting 2;
s6: measuring to obtain a target distance delta S between the first target point fixing groove 6 and the second target point fixing groove 7;
s7: selecting a test hole 13, and putting an initiating explosive package into the test hole 13;
s8: the testing device is vertically placed in the middle of the testing hole 13, the first target point fixing groove 6 is located below, in the implementation, the distance between the first target point fixing groove 6 and the initiating explosive bag is more than or equal to 3m, so that the explosive can reach stable detonation, and the probe measures the stable detonation speed of the explosive;
s9: carrying out charging, filling and detonating network connection on the test hole 13;
s10: connecting the free ends of the first target wire 8, the target wire and the common wire 10 with a measurement port group of the velocimeter respectively;
s11: the velocimeter measures the explosion velocity to obtain the explosion velocity D in the measuring holepj;
In this embodiment, the S11 includes the following steps:
s111: starting a detonation velocity instrument;
s112: clicking the target distance, setting the target distance to be delta S, and setting the target distance to be mm;
s113: the click time base is set as us;
s114: click measurement is carried out, and the detonation velocity D in the hole is obtainedpj。
S12: correcting the detonation velocity error to obtain the actual detonation velocity value D in the holeC。
In this embodiment, the step S12 specifically includes the following steps:
in the formula, DCMeasuring the detonation velocity value after the influence of the error by the probe, wherein delta S is the distance between the lower end surface of the first target point fixing groove and the lower end surface of the second target point fixing groove, eta is the measurement error which is the difference between the set value and the actual value, and DpjThe detonation velocity value is given.
Claims (5)
1. The utility model provides an on-spot muddy dress emulsification is downthehole explosion velocity testing arrangement for explosive which characterized in that: comprises an explosion velocity instrument (1), a test probe, a balancing weight (3) and a test wire;
the test probe comprises a pipe fitting (2), and the outer walls of two ends of the pipe fitting (2) are respectively provided with a bearing hole (4) and a balance weight hole (5);
a first target point fixing groove (6) and a second target point fixing groove (7) are respectively formed in the outer wall of the pipe fitting (2) along the circumferential direction, the first target point fixing groove (6) and the second target point fixing groove (7) are respectively located between the bearing hole (4) and the counterweight hole (5), the first target point fixing groove (6) is close to the bearing hole (4), and the second target point fixing groove (7) is close to the bearing hole (4);
a strip-shaped groove (11) is formed in the outer wall of the pipe fitting (2) along the axial direction, and two ends of the strip-shaped groove (11) are respectively communicated with the first target point fixing groove (6) and the second target point fixing groove (7);
the test line comprises a first target line (8), a second target line (9) and a common conducting wire (10);
the first target wire (8) and the common conducting wire (10) are twisted with each other in a twist shape to form a first measuring wire, and the first measuring wire is wound in the first target point fixing groove (6);
the second target wire (9) and the common conducting wire (10) are twisted with each other in a twist shape to form a second measuring wire, and the second measuring wire is wound in the second target point fixing groove (7);
the free ends of the first target wire (8), the second target wire (9) and the common lead (10) are respectively connected with a measurement port group of the detonation velocity instrument (1).
2. The in-hole explosion velocity testing device for the mixed emulsion explosive on site according to claim 1, wherein: target line fixing pieces (12) are respectively arranged at two ends in the strip-shaped groove (11).
3. The in-hole explosion velocity testing device for the mixed emulsion explosive on site according to claim 1, wherein: the counterweight hole (5) is connected with one end of a counterweight line, and the other end of the counterweight line is connected with a counterweight block.
4. The in-hole explosion velocity testing device for the mixed emulsion explosive on site as claimed in claim 3, wherein: sealing devices are respectively arranged on the winding parts of the first measuring line and the second measuring line.
5. The in-hole explosion velocity testing device for the mixed emulsion explosive on site as claimed in claim 4, wherein: the sealing device is a sealing adhesive tape.
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CN111007276A (en) * | 2019-11-21 | 2020-04-14 | 葛洲坝易普力四川爆破工程有限公司 | In-hole explosion speed testing device for on-site mixed emulsion explosive and working method thereof |
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CN111007276A (en) * | 2019-11-21 | 2020-04-14 | 葛洲坝易普力四川爆破工程有限公司 | In-hole explosion speed testing device for on-site mixed emulsion explosive and working method thereof |
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