CN109738148A - It explodes before a kind of underground engineering protective-door the calculation method of positive pressure of shock wave behind the door - Google Patents
It explodes before a kind of underground engineering protective-door the calculation method of positive pressure of shock wave behind the door Download PDFInfo
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Abstract
The invention discloses a kind of calculation methods for the positive pressure of shock wave behind the door of exploding before underground engineering protective-door: Step 1: ammunition is in the acquisition of the explosion wave overvoltage test data produced by behind the door of exploding in front of the door；Step 2: ammunition is in the foundation in produced explosion wave superpressure calculation formula behind the door of exploding in front of the door；Step 3: fitting ammunition is exploded in front of the door in produced explosion wave superpressure calculation formula behind the doorNumerical value；Step 4: ammunition explosion time in front of the door behind the door produced by explosion wave superpressure calculating.It explodes before this underground engineering protective-door the calculation method of positive pressure of shock wave behind the door, ammunition has been obtained in the calculation formula in produced explosion wave superpressure behind the door of exploding in front of the door, become ammunition fast in the calculating of explosion wave superpressure produced by behind the door of exploding in front of the door, it is time saving and energy saving.
Description
Technical field
The present invention relates to positive pressure of shock wave computing technique fields behind the door of exploding before underground engineering protective-door, more particularly to one kind
It explodes before underground engineering protective-door the calculation method of positive pressure of shock wave behind the door.
Background technique
Underground engineering is widely used in military and civilian building, in military aspect, with the development of precision Guidance Technique
The raising of ground ability is bored with weapon, it is higher and higher that ammunition enters a possibility that exploding in underground engineering.In particular with subway
It constantly comes into operation Deng large-scale civilian underground engineering, since these local floating populations are intensive, are attacked by terrorists and occur even
The probability so exploded increases.Study of The Underground engineering protection explodes positive pressure of shock wave calculation method behind the door in front of the door, to protective door descendant
The protection of member and goods and materials is significant.
The test of positive pressure of shock wave is a mature technology after exploding in underground engineering, is tried with complete blast analogue
Proved recipe method, testing standard, while simply can easily calculate generated explosion wave superpressure after ammunition explosion.However
For being provided with the operating condition of protective door in underground engineering, ammunition is exploded in front of the door in protective door in produced explosion wave behind the door
The calculating of superpressure, there is presently no complete test method and testing standards, and operating condition more is not arranged according to protective door, directly count
Calculate the calculation method of superpressure behind the door.Inventor is based on exploding before defect in the prior art has obtained a kind of underground engineering protective-door
The calculation method of positive pressure of shock wave behind the door can well solve problems of the prior art.
Summary of the invention
The purpose of the present invention is to solve above-mentioned problems of the prior art, provide a kind of underground engineering protection
It explodes in front of the door the calculation method of positive pressure of shock wave behind the door, the invention is scientific and reasonable, is exploded produced by behind the door in front of the door to ammunition
The accuracy in computation of explosion wave superpressure is high, it is quick, time saving and energy saving to calculate；The present invention by before underground engineering protective-door not
Ammunition demolition point is set at same distance, while multiple groups sensor, each group of sensor are set on protective door behind the door side walls
A corresponding explosion measuring point passes through the positive pressure of shock wave of each explosion measuring point of sensor measurement；Then pass through simulated test
Then a series of available different working condition demolition points are managed in the positive pressure of shock wave of different measuring points behind the door by dimensional analysis
By being fitted to obtain ammunition in the calculating of the explosion wave superpressure behind the door of explosion time in front of the door according to the test parameters of simulated test
Formula.
The present invention provides a kind of calculation method for the positive pressure of shock wave behind the door of exploding before underground engineering protective-door:
Step 1: ammunition is in the acquisition in produced explosion wave overvoltage test data behind the door of exploding in front of the door: in underground engineering
N number of sensor, the corresponding explosion measuring point of a sensor are uniformly arranged after protective door on the side wall of two sides；If underground engineering is exploded
The explosive payload of point is Q, explosion measuring point is A, and demolition point is L at a distance from protective door, and the equivalent diameter of underground engineering is D, explosion
Measuring point A is X at a distance from protective door；Simulated test is carried out, rushing at different explosion measuring point A can be measured by sensor
Hit wave superpressure；A series of experiments data are obtained by the test of the different demolition point difference doses of N group；
Step 2: ammunition is in the foundation in produced explosion wave superpressure calculation formula behind the door of exploding in front of the door: passing through step 1
In specific simulated test it is found that the positive pressure of shock wave △ P of the explosion measuring point A and explosive payload Q of underground engineering demolition point, quick-fried
Fried point and protective door distance L, the equivalent diameter D of underground engineering, the measuring point A and protective door distance X that explodes have close relationship,
Its functional expression are as follows: △ P=f (Q, L, D, X) then obtains the calculation formula of △ P by dimensional analysis are as follows:；
L is explosive distance, unit m in formula；Q is demolition point charging quality, unit ㎏；△ P is the impact of explosion measuring point A
Wave superpressure, unit Mpa；
Step 3: fitting ammunition is exploded in front of the door in produced explosion wave superpressure calculation formula behind the door
Numerical value: by step 1 simulated test explosive payload Q, demolition point and protective door distance L, underground engineering equivalent diameter D,
Formula, which is fitted, in the specific value substitution step 2 of explosion measuring point A and protective door distance X determines's
Specific value；
Step 4: ammunition explosion time in front of the door behind the door produced by explosion wave superpressure calculating: underground engineering ammunition is exploded
The explosive payload Q of point, demolition point and protective door distance L, the equivalent diameter D of underground engineering, explosion measuring point A are at a distance from protective door
It is calculated in X specific value and step 3Numerical value is updated to formula
In be calculated ammunition explode in front of the door behind the door explode measuring point A at explosion wave superpressure.
Wherein in step 1, difference explosion measuring point A corresponds to different sensors, and ammunition demolition point is at a distance from protective door
L, different explosion measuring point A are X at a distance from protective door.
Wherein in step 1, N number of sensor, a sensor are uniformly arranged on the side wall of two sides after underground engineering protective-door
A corresponding explosion measuring point；If the explosive payload of ammunition demolition point is Q, explosion measuring point is A, and ammunition demolition point is at a distance from protective door
For L, the equivalent diameter of underground engineering is D, and the measuring point A that explodes is X at a distance from protective door；Do so is measured not by sensor
With under ammunition demolition point difference dose operating condition, explosion wave superpressure at different position measuring point A exists for ammunition in step 3
It is exploded in front of the door in the specific test data of fitting offer of produced explosion wave superpressure calculation formula behind the door.
Wherein in step 2, by simulated test specific in step 1 it is found that the positive pressure of shock wave of explosion measuring point A
The explosive payload Q of △ P and underground engineering ammunition demolition point, ammunition demolition point and protective door distance L, the equivalent diameter of underground engineering
D, explosion measuring point A and protective door distance X have close relationship, functional expression are as follows:, then lead to
Cross the calculation formula that dimensional analysis fits △ P are as follows:；Do so mainly throughput
The method of guiding principle analysis obtains ammunition in the calculation expression in produced explosion wave superpressure behind the door that explodes in front of the door.
Wherein in step 3, according to the formula in step 2 by underground engineering bullet in simulated test specific in step 1
The explosive payload of medicine demolition point, ammunition demolition point and protective door distance L, the equivalent diameter D of underground engineering, explosion measuring point A and anti-
In the distance X specific numerical value generation for protecting door, arrivesIt calculates and determines in formula
Specific value；The main purpose done so is to be exploded in front of the door by ammunition in step 2 in produced explosion wave behind the door
Superpressure calculation formula calculatesSpecific value.
Wherein in step 4, by the explosive payload Q of underground engineering ammunition demolition point, ammunition demolition point and protective door distance L,
The equivalent diameter D of underground engineering, explosion measuring point A are calculated in protective door distance X specific value and step 3Numerical value is updated to formulaIn ammunition be calculated explode in front of the door
Explosion wave superpressure produced by explosion measuring point A behind the door；The main purpose done so is the powder charge in underground engineering ammunition demolition point
Q, ammunition demolition point and protective door distance L are measured, the equivalent diameter of underground engineering is D, explodes measuring point A at a distance from protective door
It is calculated in step 3 under the conditions of X is knownNumerical value is updated to formula
In be calculated ammunition explode in front of the door behind the door explode measuring point A produced by explosion wave superpressure.
The ammunition of the present invention is throughput in the calculation formula of explosion wave superpressure produced by behind the door of exploding in front of the door
What the method for guiding principle analysis was fitted.So-called dimensional analysis is a kind of method of the founding mathematical models in physical field, be
The dimension principle of homogeneity that physical law is utilized on the basis of test, determines the relationship between each physical quantity.
Beneficial effects of the present invention: the present invention provides the positive pressure of shock wave behind the door that explodes before a kind of underground engineering protective-door
Calculation method, the invention is scientific and reasonable, quasi- in the calculating for the explosion wave superpressure produced by behind the door of exploding in front of the door to ammunition
Exactness is high, it is quick, time saving and energy saving to calculate；Ammunition has been obtained in the calculating in produced explosion wave superpressure behind the door of exploding in front of the door
Formula becomes ammunition fast in the calculating of explosion wave superpressure produced by behind the door of exploding in front of the door, time saving and energy saving.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that positive pressure of shock wave is tested behind the door that explodes before underground engineering protective-door of the present invention；
Marked in the figure: 1, underground engineering, 2, sensor, 3, protective door.
Specific embodiment
The present invention is described further below in conjunction with specific embodiment, these embodiments be merely to illustrate the present invention without
For limiting the scope of the invention.
The present invention provides a kind of calculation method for the positive pressure of shock wave behind the door of exploding before underground engineering protective-door:
It explodes before a kind of underground engineering protective-door the calculation method of positive pressure of shock wave behind the door:
Step 1: ammunition is in the acquisition in produced explosion wave overvoltage test data behind the door of exploding in front of the door: in underground engineering 1
N number of sensor 2, the corresponding explosion measuring point of a sensor are uniformly arranged after protective door 3 on the side wall of two sides；If underground engineering 1
The explosive payload of demolition point is Q, explosion measuring point is A, and demolition point is L at a distance from protective door 3, and the equivalent diameter of underground engineering 1 is
D, the measuring point A that explodes are X at a distance from protective door 3；Simulated test is carried out, different explosions can be measured by sensor 2 and surveyed
Positive pressure of shock wave at point A；A series of experiments data are obtained by the test of the different demolition point difference doses of N group；
Step 2: ammunition is in the foundation in produced explosion wave superpressure calculation formula behind the door of exploding in front of the door: passing through step 1
In specific simulated test it is found that the positive pressure of shock wave △ P of the explosion measuring point A and explosive payload Q of 1 demolition point of underground engineering,
Demolition point and 3 distance L of protective door, the equivalent diameter D of underground engineering 1, explosion measuring point A and 3 distance X of protective door have close
Relationship, functional expression are as follows:, the calculation formula of △ P is then obtained by dimensional analysis are as follows:；
L is explosive distance, unit m in formula；Q is demolition point explosive payload, unit ㎏；△ P is the shock wave of explosion measuring point A
Superpressure, unit Mpa；
Step 3: fitting ammunition is exploded in front of the door in produced explosion wave superpressure calculation formula behind the door
Numerical value: according to by step 1 simulated test explosive payload Q, demolition point and 3 distance L of protective door, underground engineering 1 it is equivalent
The specific value of diameter D, explosion measuring point A and 3 distance X of protective door substitute into formula in step 2It is fitted and determinesSpecific value；
Step 4: ammunition explosion time in front of the door behind the door produced by explosion wave superpressure calculating: 1 ammunition of underground engineering is exploded
Explosive payload Q, demolition point and the 3 distance L of protective door of point, the equivalent diameter D of underground engineering 1, explosion measuring point A and protective door 3
It is calculated in distance X specific value and step 3Numerical value is updated to formula
In be calculated ammunition explode in front of the door behind the door explode measuring point A at explosion wave superpressure.
Claims (2)
1. a kind of calculation method for the positive pressure of shock wave behind the door of exploding before underground engineering protective-door, it is characterised in that: Step 1: ammunition
In the acquisition in produced explosion wave overvoltage test data behind the door of exploding in front of the door: the two sides side wall after underground engineering protective-door
On be uniformly arranged N number of sensor, the corresponding explosion measuring point of a sensor；If the explosive payload of underground engineering demolition point is Q, quick-fried
Fried measuring point is A, and demolition point is L at a distance from protective door, and the equivalent diameter of underground engineering is D, explode measuring point A and protective door away from
From for X；Simulated test is carried out, the positive pressure of shock wave at different explosion measuring point A can be measured by sensor；Pass through N group
The test of different demolition point difference doses obtains a series of experiments data；Step 2: ammunition is exploded in front of the door produced by behind the door
The foundation of explosion wave superpressure calculation formula: by simulated test specific in step 1 it is found that explosion measuring point A's rushes
Hit the explosive payload Q of wave superpressure △ P Yu underground engineering demolition point, demolition point and protective door distance L, the equivalent diameter of underground engineering
D, explosion measuring point A and protective door distance X have close relationship, functional expression are as follows: △ P=f (Q, L, D, X) then passes through dimension
Analyze △ P calculation formula are as follows:；L is explosive distance, unit m in formula；Q is explosion
Point charging quality, unit ㎏；△ P is the positive pressure of shock wave of explosion measuring point A, unit Mpa；Step 3: fitting ammunition is in door
Preceding explosion is in produced explosion wave superpressure calculation formula behind the doorNumerical value: by step 1 blast analogue
Trial charge amount Q, demolition point and protective door distance L, the equivalent diameter D of underground engineering, explosion measuring point A and protective door distance X
Specific value substitute into formula in step 2 and be fitted and determineSpecific value；Step 4: ammunition is in door
Preceding explosion time behind the door produced by explosion wave superpressure calculating: by the explosive payload Q of underground engineering ammunition demolition point, demolition point with
The distance L of protective door, the equivalent diameter D of underground engineering, explosion measuring point A are in protective door distance X specific value and step 3
It is calculatedNumerical value is updated to formulaIn ammunition be calculated explode in front of the door
The explosion wave superpressure at the measuring point A that explodes behind the door.
2. the calculation method for the positive pressure of shock wave behind the door of exploding before a kind of underground engineering protective-door according to claim 1,
Be characterized in that: difference explosion measuring point A corresponds to different sensors, and ammunition demolition point is L, different explosions at a distance from protective door
Measuring point A is X at a distance from protective door.
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| CN201811539316.2A CN109738148B (en) | 2018-12-17 | 2018-12-17 | Method for calculating overpressure of rear shock wave of front explosion door of underground engineering protective door |
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| CN201811539316.2A CN109738148B (en) | 2018-12-17 | 2018-12-17 | Method for calculating overpressure of rear shock wave of front explosion door of underground engineering protective door |
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Cited By (4)
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| CN111444566A (en) * | 2020-03-27 | 2020-07-24 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Simplified calculation method for characteristic parameters of terrorist explosion shock waves |
| CN113051715A (en) * | 2021-03-03 | 2021-06-29 | 重庆师范大学 | Method for analyzing influence of explosion of canned materials in intelligent chemical industry park |
| CN114923658A (en) * | 2022-05-18 | 2022-08-19 | 南京理工大学 | Tunnel device for researching shock wave propagation and underground structure dynamic response |
| CN116008106A (en) * | 2022-12-09 | 2023-04-25 | 南京理工大学 | Explosion-proof capacity judging method for corrugated steel plate and concrete combined structure |
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| CN113051715A (en) * | 2021-03-03 | 2021-06-29 | 重庆师范大学 | Method for analyzing influence of explosion of canned materials in intelligent chemical industry park |
| CN114923658A (en) * | 2022-05-18 | 2022-08-19 | 南京理工大学 | Tunnel device for researching shock wave propagation and underground structure dynamic response |
| CN116008106A (en) * | 2022-12-09 | 2023-04-25 | 南京理工大学 | Explosion-proof capacity judging method for corrugated steel plate and concrete combined structure |
| CN116008106B (en) * | 2022-12-09 | 2023-12-22 | 南京理工大学 | Explosion-proof capacity judging method for corrugated steel plate and concrete combined structure |
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