CN113049771A - Blind gun detection method and blind gun detection system for explosive - Google Patents
Blind gun detection method and blind gun detection system for explosive Download PDFInfo
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Abstract
The embodiment of the invention discloses a blind shot detection method and a blind shot detection system for explosive materials, which comprise the steps of establishing a detonation network, dividing n equal prediction intervals according to a blasting section, collecting related parameters, and respectively calculating a prediction value Vprediction of the maximum blasting vibration velocity in each prediction interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn(ii) a Collecting actual blasting vibration velocity Vreal in blasting process, correlating prediction interval according to collection time, and using predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval. The blind shot detection method and the blind shot detection system for the explosive materials have the advantages of accurate blind shot prediction, high accuracy, simple data acquisition and high automation degree.
Description
Technical Field
The embodiment of the invention relates to the technical field of blasting quality detection, in particular to a blind shot detection method and a blind shot detection system for explosive materials.
Background
Blind guns (blind charges) are charges that cause a misfiring charge of a charge for a variety of reasons, and the phenomenon in which a detonator, explosive, or other explosive substance cannot be detonated is called a misfiring. The exposed blind cannon can be identified from the outside, but the deep-hole blind cannon cannot be identified manually, and the danger is extremely high, so that the blind cannon identification technology needs to be researched intensively.
The ground sounds (various waves propagated in underground rocks) can be generated when the detonators and the explosives explode, although the ground sounds can be detected according to the existing blasting process, a large amount of noise is mixed in the ground sounds, the blind guns are very disordered to identify, and the blind guns are poor in identification effect of the existing blasting vibration meters. One of the main reasons is that the early detonator is delayed by chemical, the delay time error is large and inaccurate, the detonator is divided into a plurality of sections according to the delay length, the interval time of each section is 20-25 milliseconds, the delay error is generally 10-15 milliseconds, various vibration waves (namely, ground sound noise) generated by each section during blasting are repeatedly superposed in propagation, and the blasting vibration meter has high error.
At present, the electronic detonator is adopted for blasting, so that the delay precision is greatly improved, the delay reaches the millisecond level, and the error is 2-3 milliseconds at most. The smaller delay time is 5-10 milliseconds in the blasting process, although the initiation time point is more accurate, the ground sound vibration speed is unchanged, the superposition interference of the blasting sound is more serious, and the blind shot cannot be identified by the blasting vibration meter.
Therefore, a technology capable of accurately detecting the blind gun needs to be designed, the identification precision of the blasting vibration meter is improved, the existing blasting vibration meter only has the function of collecting the vibration velocity, the function is single, and the accuracy is low.
Disclosure of Invention
Therefore, the embodiment of the invention provides a blind shot detection method and a blind shot detection system for explosive materials, which aim to solve the problem that blind shots cannot be identified due to disorder of ground sounds in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a blind shot detection method for explosive materials comprises the steps of establishing a detonation network, dividing n equal prediction intervals according to a blasting section, collecting related parameters, and respectively calculating a predicted value Vpredict of the maximum blasting vibration velocity in each prediction interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn(ii) a Collecting actual blasting vibration velocity Vreal in blasting process, correlating prediction interval according to collection time, and using predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval.
According to a further technical scheme, the distance R from the blasting center to the blasting vibration measuring position is obtainednExplosive quantity Q of explosive in explosive sectionnSetting a pre-estimated earth sound constant K and a pre-estimated attenuation coefficient alpha according to the blasting environment, calculating the maximum vibration velocity Vpre of the blasting detected by the vibration velocity detection pointnThe calculation formula is as follows:
v pren＝K·(Qn 1/3/Rn)α
V pren-predicting a maximum vibration velocity of the blast in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
k is the estimated earth sound constant, and coefficients related to the terrain and geological conditions between the calculated protected objects;
α -estimated attenuation coefficient, constant.
In a further technical scheme, an endpoint formula of the prediction interval is as follows:
(to+(n-1)ta，to+nta)
wherein n is the number of blasting stages, and n is more than 0;
totime to issue a detonation command for the detonator;
tais the delay time between adjacent blast points.
According to the further technical scheme, before detonation, the delay time t between adjacent detonation sections is detectedaIf t isa<Minimum delay taminAnd detonation is prohibited.
According to the further technical scheme, before detonation, explosive identification information of explosive is collected, explosive parameters are downloaded according to the explosive identification information, and explosive quantity Q of an explosive section is obtainedn。
According to a further technical scheme, if the number of abnormal intervals exceeds the standard, any two effective actual blasting vibration speeds Vtrue are selected1With V fruit2Calculating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryThe calculation formula is as follows:
v shape1-effective actual blast vibration velocity in units of centimeters per second (cm/s);
v shape2-another effective actual blast vibration velocity in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
Kfruit of Chinese wolfberry-actual earth-sound constant, coefficients relating to topographic and geological conditions up to the calculation of the protected object；
αFruit of Chinese wolfberry-actual attenuation coefficient, constant;
updating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryCalculating the maximum vibration velocity Vnew of the expected blasting in each expected intervalnUse of the novanAnd (5) checking the validity of V true.
A blind shot detection system using a blind shot detection method of explosive materials comprises a detonation network and a blasting vibration meter which are in communication connection with each other, wherein a vibration meter processor is arranged in the blasting vibration meter, and the vibration meter processor is respectively connected with a signal acquisition module, a vibration meter memory, a first input module and a first display module; the vibration meter processor is configured to divide n equal prediction intervals according to the blasting section, obtain related parameters through the detonation network, and respectively calculate the predicted value Vpredicted of the maximum blasting vibration velocity in each predicted interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn(ii) a In the blasting process, the signal acquisition module acquires the actual blasting vibration velocity Vreal, and the vibration meter processor uses the predicted value Vreal to predict the interval according to the association of acquisition timenAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval.
According to the further technical scheme, the detonation network comprises a data center, a detonator, a detonation circuit and a plurality of explosive materials, the detonator is connected with the plurality of explosive materials through the detonation circuit, and the detonator is in communication connection with the data center; the detonator collects explosive identification information of explosive materials and downloads explosive parameters corresponding to the explosive identification information from the data center, the detonator sends the explosive parameters to the explosion vibration meter, and the explosion vibration meter calculates explosive quantity Q of an explosive section according to the explosive parametersn。
According to the technical scheme, the detonator is provided with a detonator processor, a second input module, a second display module, a detonation transmitting end, an information acquisition end, a self-locking module and a self-locking switch, the detonator processor is respectively connected with the second input module, the second display module, the information acquisition end, the detonation transmitting end and the wireless communication module, the self-locking module is arranged on a circuit between the detonator processor and the input module, the self-locking switch is arranged at the detonation transmitting end, and the self-locking module is electrically connected with the self-locking switch.
In a further technical scheme, the vibration meter processor is electrically connected with the data self-checking module.
The embodiment of the invention has the following advantages:
the blind shot detection method and the blind shot detection system for the explosive materials divide n equal prediction intervals according to the blasting section, collect related parameters, and respectively calculate the predicted value Vpredicted of the maximum blasting vibration speed in each predicted interval according to a blasting vibration speed formulanI.e. n predicted values Vpredictn(ii) a Collecting actual blasting vibration velocity Vreal in blasting process, correlating prediction interval according to collection time, and using predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval, and sending corresponding alarm or alarm information.
According to the blind shot detection method and the blind shot detection system for the explosive materials, provided by the embodiment of the invention, the detonation interval is detected before detonation, the setting of the detonation interval is limited, the non-standard operation in the industry is changed, the detonation is not obviously superposed, the time and the detonation intensity of each detonator can be accurately recorded by equipment such as a blasting vibration meter, a noise meter and the like, the problems of poor measurement accuracy and high omission of the traditional blasting vibration meter are solved, and the accurate detection of the blind shot is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a logic flow diagram of a blind shot detection method for explosives in accordance with an embodiment of the present invention;
fig. 2 is a logic flow diagram of a data self-checking function in a blind shot detection method for explosive materials according to an embodiment of the present invention;
fig. 3 is a block diagram of a blind shot detection system for explosive materials according to an embodiment of the present invention;
FIG. 4 is a system diagram of another blind shot detection system for explosives provided in accordance with an embodiment of the invention;
FIG. 5 is a block diagram of an alternative initiator based on FIG. 4;
FIG. 6 is a block diagram of the self-locking module of FIG. 5;
FIG. 7 is a system block diagram of another blind shot detection system for explosives based on FIG. 4;
fig. 8 is a block diagram of the multiport connector of fig. 7.
In the figure:
1. a blasting vibration meter; 2. an initiator; 3. a detonating circuit; 4. a data center; 5. an explosive material; 6. a vibrometer processor; 7. a signal acquisition module; 8. a vibration meter memory; 9. a first input module; 10. a first display module; 11. a data self-checking module; 12. an initiator processor; 13. a second input module; 14. a second display module; 15. detonating the transmitting end; 16. an information acquisition end; 17. a self-locking module; 18. a self-locking switch; 19. an interval detection submodule; 20. a self-checking sub-module; 21. a multiport connector; 22. a connector processor; 23. a connector storage module; 24. an output port; 25. and (6) inputting the port.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a blind shot detection method for explosive materials comprises establishing a blasting network;
dividing n equal prediction intervals according to the blasting section, collecting related parameters, and respectively calculating the predicted value Vpredict of the maximum blasting vibration velocity in each prediction interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn；
Collecting actual blasting vibration velocity Vreal in blasting process, correlating prediction interval according to collection time, and using predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval. The above steps are specifically described below:
the dividing of n equal prediction intervals according to the blasting segment includes:
(to+(n-1)ta，to+nta)
wherein n is the number of blasting stages, and n is more than 0;
tothe time to issue a detonation command for the detonator 2;
tais the delay time between adjacent blast points.
Obtaining a plurality of predicted intervals sequentially having the sequence of (t)0，to+ta)、(to+ta，to+2ta)、(to+2ta，to+3ta)....(to+(n-1)ta，to+nta)。
The above is a specific embodiment of the predicted interval under the condition that the delay time of each blasting segment is equal, and if the delay time between each blasting segment is not equal, the delay time of n blasting segments is t sequentially1、t2...tnThen each predicted interval is specifically (t)0，to+t1)、(to+t1，to+t1+t2)、(to+t1+t2，to+t1+t2+t3)....(t0+t1...tn-1+tn，t0+t1...tn-1+2tn)。
Prior to detonation, the detonator 2 detects the delay time t between adjacent detonation segmentsaIf t isa<Set minimum delay taminThe detonator 2 prohibits the initiation command from being sent, the condition that the initiation interval is too short is limited, the superposition of ground sounds is reduced, the condition that the detonation sound is obviously superposed does not exist, and the detonation vibration meter 1 can accurately record the detonation time and the detonation sound intensity of each detonator. Specifically, the self-locking module 17 independent of the detonator processor 12 is arranged in the detonator 2, the design can prevent the self-locking module 17 from being tampered, the self-locking module 17 is electrically connected with the self-locking switch 18, the self-locking switch 18 is arranged on a circuit between the detonator processor 12 and the detonation end, the self-locking switch 18 is normally closed, and the self-locking module 17 is configured to detect the delay time t between adjacent detonation sections after receiving a detonation instructionaIf t isa<Set minimum delay taminThen the self-locking switch 18 is controlled to be switched off, and the detonator 2 cannot send out a detonation signal.
Collecting related parameters, and respectively calculating the predicted value Vpredict of the maximum vibration velocity of blasting in each predicted interval according to a blasting vibration velocity formulan. Specifically, the distance R from the blasting center to the blasting vibration measuring position is obtainednExplosive quantity Q of explosive in explosive sectionnSetting a pre-estimated earth sound constant K and a pre-estimated attenuation coefficient alpha according to the blasting environment, calculating the maximum vibration velocity Vpre of the blasting detected by the vibration velocity detection pointnThe calculation formula is as follows:
v pren＝K·(Qn 1/3/Rn)α
V pren-predicting a maximum vibration velocity of the blast in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
k is the estimated earth sound constant, and coefficients related to the terrain and geological conditions between the calculated protected objects;
α -estimated attenuation coefficient, constant.
Obtaining K and alpha according to the environment lithology:
if the lithology is hard rock, K is 50-150, and alpha is 1.3-1.5;
if the lithology is medium-hard rock, K is 150-250, and alpha is 1.5-1.8;
if the lithology is soft rock, K is 250-350 and alpha is 1.8-2.0.
The relevant parameters can be input manually. In order to improve the working efficiency and increase the intelligent design, the blasting vibration meter 1 can obtain the identification information of the blasting product through the blasting network, the identification information of the blasting product is stored in a control circuit arranged in the electronic blasting product 5, and the parameters of the blasting product corresponding to the identification information of the blasting product are downloaded to obtain the blasting quantity Q of the blasting product sectionn. The explosive 5 is such as a digital detonator, an electronic detonator, or the like.
If the situation that a plurality of explosive articles 5 in the same blasting section explode simultaneously exists, adding a line mark to the explosive identification information, wherein the line mark is the electronic identification information of the detonating line 3. The specific addition mode is that exclusive port mark information is set as a line mark according to different ports of the detonation network connected with the detonation line 3. The combination of the explosive identification information and the line mark enables the detonation system to automatically identify the association relationship between the two parameters of the position and the explosive amount of the explosive 5.
Specifically, a plurality of line connection ports may be provided on the initiator 2, line markers corresponding to the line connection ports are stored in the initiator 2, or an external multi-port connector 21 is connected, the multi-port connector 21 adds line markers corresponding to the ports to the acquired data, and each blasting line is connected with one explosive 5. Since a plurality of explosive substances 5 are detonated simultaneously, the detonation circuit 3 may be configured such that one bus line connects a plurality of sub-lines, each sub-line connecting one explosive substance 5, and the line marker of the bus line is configured with explosive substance identification information of the explosive substance 5 connected thereto.
Because the identification information of the explosive is associated with the circuit mark, the parameters of the explosive are also associated with the circuit mark, and the explosive vibration meter 1 sums the explosive quantities in the parameters of the explosive with the same circuit mark to obtain the explosive quantity Q of the explosive sectionn. The system can automatically acquire information and automatically calculate the explosive quantity of each explosive section no matter whether single explosive 5 is blasted or multiple explosive 5 is blasted, the automation degree is high, the error rate is low, and manual operation is not needed.
Obtaining the distance R from the blasting center to the blasting vibration measuring positionn. Specifically, after manual measurement, the measured data is input into the blasting vibration meter 1, or the blasting vibration meter 1 is connected with a laser ranging device, the blasting vibration meter 1 is configured to sequentially receive distance information sent by the laser ranging device, store the distance information in sequence, configure distance parameters according to a blasting sequence, and obtain a distance RnThe laser ranging precision is high, the efficiency is fast, people keep away from exploding the article, and the security is high.
Finally, the blasting vibration meter 1 calculates the predicted value Vpredict of the maximum blasting vibration velocity in each predicted intervaln。
In order to reduce the error rate, after the detonator 2 receives the detonation instruction and before the detonation signal is sent, the detonator 2 sends a detection instruction to the blasting vibration meter 1, the blasting vibration meter 1 carries out self-detection after receiving the detection instruction, and the distance R between the blasting vibration meter and the blasting central point is detectednAnd explosive charge QnIf the data quantity of the blasting vibration meter 1 is not equal to the data quantity of the self-checking switch 18, or if the data quantity of the blasting vibration meter 1 is not equal to the data quantity of the self-checking switch, or if the parameter data is missing, if the K value and the alpha value are not set, the blasting vibration meter 1 sends a self-checking abnormal signal, otherwise, the blasting vibration meter 1 sends a self-checking qualified signal, and the detonator 2 controls the self-checking switch 18 to be switched off after receiving. Self-test procedure independentThe main program of the blasting vibration meter 1 cannot be tampered with through the blasting vibration meter 1.
Collecting actual blasting vibration velocity Vreal in the blasting process, correlating the prediction interval according to the collection time, and predicting by using a predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real to be an abnormal interval, and specifically comprising the following steps:
after detonation, the detonation vibration meter 1 collects the actual vibration velocity value Vreal in the detonation process at a fixed frequency, and correlates and predicts the interval according to the collection time, wherein the collection frequency is higher than the frequency of the detonation section. Corresponding Vpre in each prediction intervalnChecking the effectiveness of actual blasting vibration velocity Vreal in the time period, and using Vreal and VprenComparing, if there is more than V pre in the prediction intervalnIf the actual vibration velocity value V is real, the prediction interval is an effective interval, and the explosive 5 detonated in the prediction interval has no possibility of explosion rejection; otherwise, if all the actual vibration speed values Vreal acquired in the prediction interval are smaller than the Vpre associated with the prediction intervalnIf the prediction interval is an abnormal interval, the explosive 5 detonated in the prediction interval may have the possibility of explosion rejection. Since the measurement will be in error, a comparison threshold is set, allowing VRESR and VRESRnThere is a certain comparison space between them, e.g. Vreal is less than VprenIf the amount of (c) exceeds a set threshold (e.g., 1/3), it is determined as an abnormal section.
As shown in fig. 2, if the number of abnormal intervals exceeds the set number or number ratio, and if the first three expected intervals are all abnormal intervals, or if the expected intervals with 1/3 ratio are all abnormal intervals, it means that the error between the previously set ground sound constant K and the actual attenuation coefficient α is too large, and readjustment is necessary. The blasting vibration meter 1 selects any two effective actual blasting vibration speeds and calculates the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryIn this embodiment, the effective actual blasting vibration velocity vure in the first prediction interval and the second prediction interval is selected1With V fruit2The calculation formula is as follows:
v shape1-effective actual blast vibration velocity in units of centimeters per second (cm/s);
v shape2-another effective actual blast vibration velocity in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
Kfruit of Chinese wolfberry-actual earth-sound constants, coefficients relating to the topographic, geological conditions up to the calculation of the protected objects;
αfruit of Chinese wolfberry-actual attenuation coefficient, constant;
updating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryUsing the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryCalculating new predicted maximum vibration velocity of blasting VSWnThe calculation formula is as follows:
v Newn-a new calculated predicted maximum blast vibration velocity in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
Kfruit of Chinese wolfberry-actual ground sound constants, coefficients related to the terrain, geological conditions up to the calculation of the protected objects;
αfruit of Chinese wolfberry-the actual attenuation coefficient, constant;
using novanAlternative VprenAnd verifying the validity of the actual V in each prediction interval again.
As shown in fig. 3, a blind shot detection system using a blind shot detection method for explosive 5 comprises a detonation network and a blasting vibration meter 1 which are in communication connection with each other, wherein a vibration meter processor 6 is arranged in the blasting vibration meter 1, and the vibration meter processor 6 is respectively connected with a signal acquisition module 7, a vibration meter memory 8, a first input module 9 and a first display module 10; the vibration meter processor 6 is configured to divide n equal prediction intervals according to the blasting section, obtain related parameters through the blasting network, and respectively calculate a predicted value Vforecast of the maximum blasting vibration velocity in each prediction interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn(ii) a In the blasting process, the signal acquisition module 7 acquires the actual blasting vibration velocity Vreal, and the vibration meter processor 6 uses the predicted value Vreal to predict the interval according to the acquisition time correlation predictionnAnd verifying the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval.
The vibration meter processor 6 is further configured to calculate the number or the proportion of the abnormal intervals, and if the number or the proportion exceeds a set threshold, any two effective actual blasting vibration velocities vshright1With V fruit2Calculating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryUpdating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryRecalculating the maximum vibration velocity Vnew of the predicted blasting in each predicted intervalnUse of the novanAnd verifying the validity of the real V.
As shown in fig. 4, the detonation network comprises a data center 4, a detonator 2, a detonation circuit 3 and a plurality of explosive articles 5, wherein the detonator 2 is connected with the plurality of explosive articles 5 through the detonation circuit 3, and the detonator 2 is in communication connection with the data center 4; the detonator 2 collects explosive identification information of the explosive 5 and downloads explosive parameters corresponding to the explosive identification information from the data center 4, the detonator 2 sends the explosive parameters to the explosion vibration meter 1, and the explosion vibration meter 1 calculates explosive quantity Q of an explosive section according to the explosive parametersn
The initiator 2 is provided with an initiator processor 12, a second input module 13, a second display module 14, an initiation transmitting end 15 and an information acquisition end 16, the initiator processor 12 is respectively connected with the second input module 13, the second display module 14, the information acquisition end 16 and the initiation transmitting end 15, and the second input module 13 can be provided with an initiation button for transmitting an initiation instruction.
As shown in fig. 5, a self-locking module 17 and a self-locking switch 18 are arranged in the initiator 2, the self-locking module 17 is located on a circuit between the initiator processor 12 and the input module, the self-locking switch 18 is arranged on a circuit between the initiator processor 12 and the initiation transmitting terminal 15, and the self-locking module 17 is electrically connected with the self-locking switch 18. In this embodiment, the latching switch 18 is a relay switch, and is normally closed. The self-locking module 17 in this embodiment may be an ARM embedded processor.
As shown in fig. 6, the self-locking module 17 comprises an interval detection submodule 19, and the interval detection submodule 19 is configured to detect the delay time t between adjacent segments of the detonation after receiving the detonation instruction and before the detonationaIf t isa<Minimum delay taminIf so, the detonation is prohibited, and the interval detection submodule 19 controls the self-locking switch 18 to be switched off. Minimum time interval t in the present embodimentDuring minIs 100 milliseconds.
The self-locking module 17 comprises a self-checking sub-module 20, after the self-locking module 17 receives the detonation instruction, the self-checking sub-module 20 sends a detection instruction to the blasting vibration meter 1, the blasting vibration meter 1 carries out self-checking after receiving the detection instruction, and the distance R between the blasting vibration meter and the blasting central point is detectednAnd explosive charge QnIf the quantity of the data is not equal, or if the parameters are missing, if the ground sound constant and the attenuation coefficient are not set, the blasting vibration meter 1 sends a self-detection abnormal signal, the self-detection submodule 20 controls the self-locking switch 18 to be switched off after receiving the self-detection abnormal signal, and the initiator 2 cannot send an initiation instruction.
The blasting vibration meter 1 is further provided with a data self-checking module 11, the data self-checking module 11 receives a self-checking instruction and then detects and transfers corresponding data in the vibration meter memory 8, and the blasting vibration measuring position are detectedDistance R of center point of explosionnAnd explosive charge QnIf the two numbers are not equal, or if no K value and no alpha value are set, the blasting vibration meter 1 sends a self-checking abnormal signal, otherwise, the blasting vibration meter 1 sends a self-checking qualified signal.
As shown in fig. 7 and 8, the initiator 2 is connected to a plurality of explosives 5 by means of a multiport connector 21, the multiport connector 21 being provided either internally of the initiator 2 or separately externally of the initiator. The multiport connector 21 is provided with a connector processor 22, a connector memory module 23, an output port 24 and a number of input ports 25. The output port 24 is connected with the initiator 2, the connector processor 22 is electrically connected with the connector storage module 23, a plurality of input points of the connector processor 22 are respectively connected with one port to receive explosive identification information sent by the explosive 5, the explosive identification information is amplified and subjected to digital-to-analog conversion to form digital information, and the connector processor 22 is configured to add a line mark to the input explosive identification information. The multi-port connector 21 is provided with parallel ports, the parallel ports are connected with the input end of the connector processor 22, so that the multi-port connectors 21 can be connected with each other, excessive conditions are met, and a plurality of multi-port connectors 21 can be arranged to be connected into the initiator 2 in series or in parallel according to different input ends of the initiator 2. The explosive identification information of the explosive 5 is collected, the explosive identification information is amplified and subjected to digital-to-analog conversion, and then enters the connector processor 22, the connector processor 22 calls the incidence relation between the input port 25 and the line mark from the connector storage module 23, and adds the corresponding line mark to the explosive identification information.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A blind shot detection method for explosive materials is characterized by comprising the following steps: comprises establishingThe blasting network divides n equal prediction intervals according to the blasting section, collects related parameters, and respectively calculates the predicted value Vforecast of the maximum blasting vibration velocity in each prediction interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn；
Collecting actual blasting vibration velocity Vreal in blasting process, correlating prediction interval according to collection time, and using predicted value VrealnAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval.
2. The blind shot detection method for explosives according to claim 1, characterized in that the distance R from the blast center to the blast vibration measurement location is obtainednExplosive quantity Q of explosive in explosive sectionnSetting a pre-estimated earth sound constant K and a pre-estimated attenuation coefficient alpha according to the blasting environment, calculating the maximum vibration velocity Vpre of the blasting detected by the vibration velocity detection pointnThe calculation formula is as follows:
v pren＝K·(Qn 1/3/Rn)α
V pren-predicting a maximum vibration velocity of the blast in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
k is the estimated earth sound constant, and coefficients related to the terrain and geological conditions between the calculated protected objects;
α -estimated attenuation coefficient, constant.
3. The blind shot detection method for explosive materials according to claim 1, wherein the prediction interval is:
(to+(n-1)ta，to+nta)
wherein n is the number of blasting stages, and n is more than 0;
totime to issue a detonation command for the detonator;
tais the delay time between adjacent blast points.
4. The blind shot detection method for explosive articles according to claim 3, characterized in that: detecting a delay time t between adjacent initiation segments before initiationaIf t isa<Minimum delay taminAnd detonation is prohibited.
5. The blind shot detection method for explosive articles according to claim 1, characterized in that: before detonation, explosive identification information of explosive is collected, explosive parameters are downloaded according to the explosive identification information, and explosive quantity Q of an explosive section is obtainedn。
6. The blind shot detection method for explosive articles according to claim 1, characterized in that: if the number of the abnormal intervals exceeds the standard, selecting any two effective actual blasting vibration speeds Vtrue1With V fruit2Calculating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryThe calculation formula is as follows:
v shape1-effective actual blast vibration velocity in units of centimeters per second (cm/s);
v shape2-another effective actual blast vibration velocity in centimeters per second (cm/s);
Rnthe distance between the blasting vibration measuring position and the blasting central point is measured in meters (m);
Qn-the explosive quantity in kilograms (kg) of the blasting section;
Kfruit of Chinese wolfberryActual ground sound constant, and to computational protectionCoefficients relating to terrain and geological conditions between objects;
αfruit of Chinese wolfberry-actual attenuation coefficient, constant;
updating the actual ground sound constant KFruit of Chinese wolfberryWith the actual attenuation coefficient alphaFruit of Chinese wolfberryCalculating the maximum vibration velocity Vnew of the expected blasting in each expected intervalnUse of the novanAnd (5) checking the validity of V true.
7. A blind shot detection system using a blind shot detection method for explosive materials is characterized in that: the system comprises a detonation network and a blasting vibration meter which are in communication connection with each other, wherein a vibration meter processor is arranged in the blasting vibration meter, and the vibration meter processor is respectively connected with a signal acquisition module, a vibration meter memory, a first input module and a first display module;
the vibration meter processor is configured to divide n equal prediction intervals according to the blasting section, obtain related parameters through the detonation network, and respectively calculate the predicted value Vpredicted of the maximum blasting vibration velocity in each predicted interval according to a blasting vibration velocity formulanI.e. n predicted values Vpredictn；
In the blasting process, the signal acquisition module acquires the actual blasting vibration velocity Vreal, and the vibration meter processor uses the predicted value Vreal to predict the interval according to the association of acquisition timenAnd checking the effectiveness of the actual blasting vibration velocity V real, and if the effective actual blasting vibration velocity V real does not exist in the prediction interval, judging the actual blasting vibration velocity V real is an abnormal interval.
8. The blind shot detection system of claim 7, wherein: the detonation network comprises a data center, a detonator, a detonation circuit and a plurality of explosive substances, wherein the detonator is connected with the explosive substances through the detonation circuit and is in communication connection with the data center;
the detonator collects explosive identification information of explosive materials and downloads explosive parameters corresponding to the explosive identification information from the data center, the detonator sends the explosive parameters to the explosion vibration meter, and the explosion vibration meter calculates explosive quantity Q of an explosive section according to the explosive parametersn。
9. The blind shot detection system of claim 8, wherein: the detonator is provided with a detonator processor, a second input module, a second display module, a detonation transmitting end, an information acquisition end, a self-locking module and a self-locking switch, the detonator processor is respectively connected with the second input module, the second display module, the information acquisition end, the detonation transmitting end and the wireless communication module, the self-locking module is arranged on a circuit between the detonator processor and the input module, the self-locking switch is arranged at the detonation transmitting end, and the self-locking module is electrically connected with the self-locking switch.
10. The blind shot detection system of claim 8, wherein: the vibration meter processor is electrically connected with the data self-checking module.
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