CN109540707A - The pilot system and method for simulating contact explosion time combustion gas test pipe anti-knock properties - Google Patents
The pilot system and method for simulating contact explosion time combustion gas test pipe anti-knock properties Download PDFInfo
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- CN109540707A CN109540707A CN201910032281.1A CN201910032281A CN109540707A CN 109540707 A CN109540707 A CN 109540707A CN 201910032281 A CN201910032281 A CN 201910032281A CN 109540707 A CN109540707 A CN 109540707A
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- combustion gas
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- pipe
- explosion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention discloses the pilot systems and method of a kind of simulating contact explosion time combustion gas test pipe anti-knock properties, gas pipeline is embedded in soil layer in test, the blasting charge is placed on outdoor section of gas pipeline of upper surface explosion, tube wall failure mechanics will appear different breakoff phenomenons after the blasting charge of big dose and small pit goaf does outer contacting explosion respectively, including dent, crack, the breakoff phenomenons such as perforation, and the severity of various breakoff phenomenons is not again identical, therefore needing to obtain accurate quantized data by monitoring instrument includes vibration velocity, strain, displacement, fracture width, perforation bore etc..The measuring equipment for destroying data acquisition includes vibrating speed sensors, pipeline internal stress strain testing element, data collection system, computer, close range photogrammetric system and the spatial digitizer arranged inside pipeline.The present invention can obtain the deformation characteristic of gas pipeline under reliable contact explositions and destroy situation to carry out the antiknock Journal of Sex Research of science.
Description
Technical field
The present invention relates to explosions and pipeline engineering technical field, fire more specifically to a kind of simulating contact explosion time
The pilot system and method for gas test pipe anti-knock properties.
Background technique
With Development of Urbanization, the pipeline of oil transportation, gas transmission, water delivery etc. is almost the most important lifeline in city, unfortunate
It is that the attack of terrorism happens occasionally, in recent years, multiple explosion has occurred on the route of oil and natural gas conveyance conduit.
However the existing research in terms of pipe explosion focuses mainly on remote explosion to the Dynamic response characteristic of pipeline, more limitations
Monitoring and numerical simulation on site, and deliberate explosion (destruction or the attack of terrorism) can cause serious deformation to pipeline, especially
It is contact explositions, and general pipeline can be destroyed directly.In order to fill up this blank, present invention offer is intended to provide a kind of test
The data being collected into are carried out science to simulate the research of combustion gas test pipe anti-knock properties under attack of terrorism contact explositions by method
Combustion gas test pipe anti-knock properties rule under attack of terrorism contact explositions is explored in analysis.
Summary of the invention
The present invention provides the pilot system and method for a kind of simulating contact explosion time combustion gas test pipe anti-knock properties, especially
When the attack of terrorism, according to the complexity of reality, different dose explosive events has been comprehensively considered to combustion gas test pipe
Influence, the optimization design for combustion gas test pipe provides scientific basis.
Wherein one side according to the present invention, the technical solution adopted by the present invention to solve the technical problems is: construction one
The pilot system of kind of simulating contact explosion time combustion gas test pipe anti-knock properties, including the blasting charge, combustion gas test pipe, miscellaneous fill with
And measuring equipment；
Combustion gas test pipe is placed in earth's surface, is embedded under miscellaneous fill and portions are outdoor, the laying of the blasting charge
Outdoor section of upper surface of combustion gas test pipe is arranged in point；
Measuring equipment includes foil gauge, vibrating speed sensors, data collecting instrument, computer, close range photogrammetric system
And spatial digitizer；On left side, right side, upper top surface and bottom surface inside combustion gas test pipe, laid along axial direction multiple
Foil gauge；Vibrating speed sensors are laid in the axis of combustion gas test pipe in the projection of medial surface；
Each foil gauge, vibrating speed sensors pass through data line respectively and connect with data collecting instrument, data collecting instrument with
Computer connection, close range photogrammetric system is after the monitoring point for choosing combustion gas test pipe, before being set to monitoring point just
Other than square safe distance；
Spatial digitizer carries out three-dimensional reconstruction calculating for scanning failure mechanics after explosion.
Further, in the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, combustion gas
It is 2m ± 0.5m that test pipe, which is embedded in the buried depth in miscellaneous fill, and the blasting charge is set to the pipe end 1m apart from combustion gas test pipe
At ± 0.5m.
Further, in the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, explosive
Packet is cylinder, and basal diameter 7cm ± 2cm, the blasting charge is divided into two kinds of doses of big dose and small pit goaf, and the explosive in the blasting charge is
Emulsion.
Further, in the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, combustion gas
The length of test pipe is 8m ± 4m, interior diameter 100cm ± 50cm, overall diameter 102cm ± 50cm, and material is the combustion of ductile iron pipe iron
Gas test pipe.
Further, in the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, strain
Piece is respectively arranged at pipe end 4m ± 0.8m and 6m ± 0.8m apart from combustion gas test pipe inner distance explosion end, and totally 8
A foil gauge, vibrating speed sensors are set to the pipe end 4m ± 0.8m and 6m at combustion gas test pipe inner distance explosion end
At ± 0.8m.
According to another aspect of the present invention, the present invention is to solve its technical problem, and it is quick-fried that the present invention also provides simulating contacts
The test method of combustion gas test pipe anti-knock properties when fried, applied to above-mentioned simulating contact explosion time combustion gas test pipe anti-knock properties
Pilot system in, comprising the following steps:
Combustion gas test pipe is placed in testing ground, carries out preliminary firm processing；
After laying pipeline, start to pile up miscellaneous fill, wherein must not damage concrete duct overall integrity when backfill
And its erosion resistant coating, notice that combustion gas test pipe should expose 2m ± 0.5m, as explosion end, miscellaneous fill layer height be 3m ±
0.5m carries out compacting work to miscellaneous fill layer, and monitor the soil body with penetration test according to the density of urban mixed fill layer
Compactness；
At the explosion of combustion gas test pipe inner distance end 4m ± 0.8m and 6m ± 0.8m, 4 points of setting strains up and down
Piece, and by data line from far from explosion end introduction pipe, vibrating speed sensors be similarly provided inside combustion gas test pipe away from
At explosion port 4m ± 0.8m and 6m ± 0.8m, and by data line from far from explosion end introduction pipe；
Far from explosion end, foil gauge, vibrating speed sensors data line are connected by data collecting instrument with computer；
At the pipeline bared end upper surface arrangement blasting charge, pack positional distance pipe end 1m ± 0.5m, then fix；
Selection small pit goaf pack try quick-fried；
After determining pack position and dose, choose pack tube contacts point as monitoring point, safe enough away from
From outer, close-shot photografic measurement system is set；
Before blasting work starts, the setting of the debugging efforts and each channel parameters of parameter data acquisition instrument is carried out,
Explosion acquires data when starting, and to the end of exploding, surrounding Rock And Soil stops acquisition after stablizing, and saves data；
Pipe wall crack width, hole bore, the hole back side tube wall in observation pipeline damage face turn over lip situation, according to circumstances increase
Subtract dose；
It wherein reduces dose and finds the small pit goaf that pipeline is capable of antiknock, pipe crack can be made after the small-charge blasting, is become
Shape is different from the slight damage phenomenon of perforation；
Increase dose wherein to analyze the destruction situation of pipeline in the case of big dose, including hole caliber size, hole back
Facial canal wall turns over lip situation and forms the fragmentation of similar bullet.
Further, in the test method of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, further include
Data processing step:
The collected pipe vibration time-history curves v (t) of velocity of vibration sensor is once integrated, the position of pipeline is obtained
Attenuation curve is moved, pipe vibration attenuation law is obtained.
Further, it in the test method of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, also wraps
Include data processing step:
Using constitutive equation σ=Ε ε of pipeline, converted according to the collected pipeline dynamic strain time-history curves ε (t) of foil gauge
For the dynamic stress attenuation curve σ (t) of pipeline, the Dynamic response characteristic of pipeline is obtained.
Further, it in the test method of simulating contact explosion time combustion gas test pipe anti-knock properties of the invention, also wraps
Include data processing step:
According to close-shot photografic measurement system the change in displacement of collected data result Accurate Analysis monitoring point, explosion time
The process of deformation and failure of pipeline, then imaging technique is swept with three-dimensional, the caliber size of failure mechanics caused by comparative analysis difference dose,
Fracture width destroys situation.
Compared with prior art, the invention has the following advantages:
1, research at present in terms of pipeline dynamic response characteristic is most of using numerical simulations and theory analysis
Means are studied using the method for field test, have been helped to improve the reliability of research achievement and have been increased research means
Diversity.
2, pack is divided into big dose and small pit goaf by the present invention, has probed into the destruction of the pipeline complexity under a variety of explosive events
Feature, it was found that the film flying of similar bullet can be generated after big dose explosion, in some instances it may even be possible to puncture other side tube wall.
3, the measurement system that the present invention uses includes a variety of measurement means, obtains pipeline vibration velocity, strained situation, especially adopts
The change in displacement that pipeline corresponding measuring point when destroying is obtained with close range photogrammetric system, is analyzed using 3-D scanning imaging technique
The Porous Characteristic of failure mechanics.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is pipeline provided by the invention and pack relative position diagrammatic cross-section；
Fig. 2 is the section layout drawing of dynamic strain measuring；
Fig. 3 is dynamic strain measuring section measuring point value arrangement map；
Fig. 4 is dynamic strain measuring measuring point foil gauge layout drawing；
Fig. 5 is explosion vibration measuring point value arrangement map；
Fig. 6 is embodiment measuring point dynamic strain datagram；
Fig. 7 is embodiment measuring point vibration velocity datagram.
Specific embodiment
The present invention provides a kind of pilot system for simulating combustion gas test pipe antiknock Journal of Sex Research under attack of terrorism contact explositions
And device has comprehensively considered influence of the different dose explosive events to combustion gas test pipe according to the complexity of reality,
Optimization design for combustion gas test pipe provides scientific basis.
Above-mentioned technical proposal in order to better understand is come below in conjunction with Figure of description and specific experiment step to upper
Technical solution is stated to be described in detail, rather than the restriction to application scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Combustion gas test pipe is placed in testing ground, carries out preliminary firm processing；
As shown in Figure 1, starting to pile up miscellaneous fill after laying pipeline, notice that combustion gas test pipe should expose 2m, as
Explosion end, miscellaneous fill layer height carry out miscellaneous fill layer the work such as to be compacted for 3m according to the density etc. of urban mixed fill layer, and
The compactness of the soil body is detected with penetration test；
Observation interface as shown in Figure 2 is respectively set at the explosion of combustion gas test pipe inner distance end 4m, 6m such as Fig. 3 institute
4 foil gauges up and down shown, totally 8, foil gauge pastes mode as shown in figure 4, and by data line from far from explosion end
Introduction pipe.Vibrating speed sensors are arranged as shown in figure 5, the axis that vibrating speed sensors are laid in combustion gas test pipe exists
In the projection of medial surface, it is located at the explosion of combustion gas test pipe inner distance port 4m, 6m, data line is drawn from far from explosion end
Pipeline out；
Far from explosion end, foil gauge, vibrating speed sensors data line are connected by data collecting instrument with computer
Small pit goaf pack such as 50g is arranged exposing pipeline upper surface at the 1m of port apart from pipeline, is slightly fixed；
After determining pack position and size, choose pack tube contacts point as monitoring point, safe enough away from
From outer, close-shot photografic measurement system is set；
Before blasting work starts, the setting of the debugging efforts and each channel parameters of parameter data acquisition instrument is carried out,
Explosion acquires data when starting, and to the end of exploding, surrounding Rock And Soil stops acquisition after stablizing, and saves data.
Pipe wall crack width, hole bore, the hole back side tube wall in observation pipeline damage face turn over lip situation, according to circumstances increase
Subtract dose；
It wherein reduces dose and finds the small pit goaf that pipeline is capable of antiknock, pipe crack can be made after the small-charge blasting, is become
Shape etc. is different from the slight damage phenomenon of perforation；
Increase dose wherein to analyze the destruction situation of pipeline in the case of big dose, including hole caliber size, hole back
Facial canal wall turns over lip situation and forms the fragmentation of similar bullet.
Further, the method also includes data processing steps:
The collected pipe vibration time-history curves v (t) of velocity of vibration sensor is once integrated, the position of pipeline is obtained
Attenuation curve is moved, pipe vibration attenuation law is obtained.
Further, the method also includes data processing steps:
Using constitutive equation σ=Ε ε of pipeline, converted according to the collected pipeline dynamic strain time-history curves ε (t) of foil gauge
For the dynamic stress attenuation curve σ (t) of pipeline, the Dynamic response characteristic of pipeline is obtained.
Further, the method also includes data processing steps:
Using constitutive equation σ=Ε ε of pipeline, permitted according to the maximum of dynamic tensile strength [σ] t inverse blasting charge of pipeline
Perhaps explosive charge obtains the oscillatory load ability to bear of pipeline.
Further, the method also includes data processing steps:
According to close-shot photografic measurement system the change in displacement of collected data result Accurate Analysis monitoring point, explosion time
The process of deformation and failure of pipeline, then imaging technique is swept with three-dimensional, the caliber size of failure mechanics caused by comparative analysis difference dose,
Fracture width etc. destroys situation.
Result after partial data processing is as shown in Figure 6, Figure 7.
The present invention provides a kind of pilot system for simulating combustion gas test pipe antiknock Journal of Sex Research under attack of terrorism contact explositions
And method has comprehensively considered influence of the different dose explosive events to combustion gas test pipe according to the complexity of reality,
Optimization design for combustion gas test pipe provides scientific basis.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties, which is characterized in that including the blasting charge, combustion
Gas test pipe, miscellaneous fill and measuring equipment；
Combustion gas test pipe is placed in earth's surface, is embedded under miscellaneous fill and portions are outdoor, and the cloth of the blasting charge, which sets up an office, to be set
It sets in outdoor section of upper surface of combustion gas test pipe；
Measuring equipment include foil gauge, vibrating speed sensors, data collecting instrument, computer, close range photogrammetric system and
Spatial digitizer；On left side, right side, upper top surface and bottom surface inside combustion gas test pipe, multiple strains are laid along axial direction
Piece；Vibrating speed sensors are laid in the axis of combustion gas test pipe in the projection of medial surface；
Each foil gauge, vibrating speed sensors pass through data line respectively and connect with data collecting instrument, data collecting instrument and calculating
Machine connection, close range photogrammetric system are set to peace immediately ahead of monitoring point after the monitoring point for choosing combustion gas test pipe
Other than full distance；
Spatial digitizer carries out three-dimensional reconstruction calculating for scanning failure mechanics after explosion.
2. the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties as described in claim 1, which is characterized in that
It is 2m ± 0.5m that combustion gas test pipe, which is embedded in the buried depth in miscellaneous fill, and the blasting charge is set to the pipe end apart from combustion gas test pipe
At mouth 1m ± 0.5m.
3. the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 2 it is characterized in that,
The blasting charge is cylinder, and basal diameter 7cm ± 2cm, the blasting charge is divided into two kinds of doses of big dose and small pit goaf, fried in the blasting charge
Medicine is emulsion.
4. the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 2, which is characterized in that
The length of combustion gas test pipe is 8m ± 4m, and interior diameter 100cm ± 50cm, overall diameter 102cm ± 50cm, material is ductile iron pipe
Iron combustion gas test pipe.
5. the pilot system of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 4, which is characterized in that
Foil gauge is respectively arranged at pipe end 4m ± 0.8m and 6m ± 0.8m apart from combustion gas test pipe inner distance explosion end,
Totally 8 foil gauges, vibrating speed sensors are set to the pipe end 4m ± 0.8m at combustion gas test pipe inner distance explosion end
And at 6m ± 0.8m.
6. a kind of test method of simulating contact explosion time combustion gas test pipe anti-knock properties is applied to as described in claim 1
When simulating attack of terrorism contact explositions in combustion gas test pipe anti-knock properties pilot system, which comprises the following steps:
Combustion gas test pipe is placed in testing ground, carries out preliminary firm processing；
After laying pipeline, start to pile up miscellaneous fill, must not wherein be damaged when backfill concrete duct overall integrity and its
Erosion resistant coating notices that combustion gas test pipe should expose 2m ± 0.5m, and as explosion end, miscellaneous fill layer height is 3m ± 0.5m, root
According to the density of urban mixed fill layer, compacting work is carried out to miscellaneous fill layer, and the compactness of the soil body is monitored with penetration test；
At the explosion of combustion gas test pipe inner distance end 4m ± 0.8m and 6m ± 0.8m, 4 points of setting foil gauges up and down,
And by data line from far from explosion end introduction pipe, it is quick-fried that vibrating speed sensors are similarly provided at combustion gas test pipe inner distance
At fried port 4m ± 0.8m and 6m ± 0.8m, and by data line from far from explosion end introduction pipe；
Far from explosion end, foil gauge, vibrating speed sensors data line are connected by data collecting instrument with computer；
At the pipeline bared end upper surface arrangement blasting charge, pack positional distance pipe end 1m ± 0.5m, then fix；It chooses
Small pit goaf pack try quick-fried；
After determining pack position and dose, selection pack tube contacts point is as monitoring point, outside the distance of safe enough,
Set close-shot photografic measurement system；
Before blasting work starts, the setting of the debugging efforts and each channel parameters of parameter data acquisition instrument, explosion are carried out
Data are acquired when beginning, to the end of exploding, surrounding Rock And Soil stops acquisition after stablizing, and saves data；
Pipe wall crack width, hole bore, the hole back side tube wall in observation pipeline damage face turn over lip situation, according to circumstances increase and decrease medicine
Amount；
It wherein reduces dose and finds the small pit goaf that pipeline is capable of antiknock, pipe crack, deformation can be made after the small-charge blasting not
It is same as the slight damage phenomenon of perforation；
Increase dose wherein to analyze the destruction situation of pipeline in the case of big dose, including hole caliber size, hole back side pipe
Wall turns over lip situation and forms the fragmentation of similar bullet.
7. the test method of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 6, which is characterized in that
Further include data processing step:
The collected pipe vibration time-history curves v (t) of velocity of vibration sensor is once integrated, the displacement for obtaining pipeline declines
Subtract curve, obtains pipe vibration attenuation law.
8. the test method of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 6, which is characterized in that
Further include data processing step:
Using constitutive equation σ=Ε ε of pipeline, pipe is converted into according to the collected pipeline dynamic strain time-history curves ε (t) of foil gauge
The dynamic stress attenuation curve σ (t) in road obtains the Dynamic response characteristic of pipeline.
9. the test method of simulating contact explosion time combustion gas test pipe anti-knock properties as claimed in claim 6, which is characterized in that
Further include data processing step:
According to close-shot photografic measurement system the change in displacement of collected data result Accurate Analysis monitoring point, explosion time pipeline
Process of deformation and failure, then sweep imaging technique, the caliber size of failure mechanics caused by comparative analysis difference dose, crack with three-dimensional
Width destroys situation.
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Cited By (6)
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| CN111089808A (en) * | 2019-12-30 | 2020-05-01 | 哈尔滨工程大学 | Composite material laminated structure antiknock characteristic test device |
| CN111781057A (en) * | 2020-07-07 | 2020-10-16 | 中国石油天然气集团有限公司 | Burning and explosion simulation system for transient rupture of liquefied petroleum gas cylinder |
| CN111948073A (en) * | 2019-05-16 | 2020-11-17 | 中国石油天然气股份有限公司 | Buried pipeline external explosion coupling interface parameter experiment testing device |
| CN112924269A (en) * | 2021-01-11 | 2021-06-08 | 国家管网集团西部管道有限责任公司 | Method and test device for simulating third-party damage to large-caliber high-pressure pipeline |
| CN116183164A (en) * | 2023-04-27 | 2023-05-30 | 中国人民解放军火箭军工程大学 | Test system and model building method for simulating warehouse explosion |
| CN117517102A (en) * | 2024-01-04 | 2024-02-06 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
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| CN111948073A (en) * | 2019-05-16 | 2020-11-17 | 中国石油天然气股份有限公司 | Buried pipeline external explosion coupling interface parameter experiment testing device |
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| CN111089808A (en) * | 2019-12-30 | 2020-05-01 | 哈尔滨工程大学 | Composite material laminated structure antiknock characteristic test device |
| CN111781057A (en) * | 2020-07-07 | 2020-10-16 | 中国石油天然气集团有限公司 | Burning and explosion simulation system for transient rupture of liquefied petroleum gas cylinder |
| CN112924269A (en) * | 2021-01-11 | 2021-06-08 | 国家管网集团西部管道有限责任公司 | Method and test device for simulating third-party damage to large-caliber high-pressure pipeline |
| CN116183164A (en) * | 2023-04-27 | 2023-05-30 | 中国人民解放军火箭军工程大学 | Test system and model building method for simulating warehouse explosion |
| CN116183164B (en) * | 2023-04-27 | 2023-08-08 | 中国人民解放军火箭军工程大学 | Test system and model building method for simulating warehouse explosion |
| CN117517102A (en) * | 2024-01-04 | 2024-02-06 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
| CN117517102B (en) * | 2024-01-04 | 2024-04-19 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
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