CN107122574A - A kind of natural gas line physical explosion damages surrounding building the evaluation method of scope - Google Patents
A kind of natural gas line physical explosion damages surrounding building the evaluation method of scope Download PDFInfo
- Publication number
- CN107122574A CN107122574A CN201710522522.1A CN201710522522A CN107122574A CN 107122574 A CN107122574 A CN 107122574A CN 201710522522 A CN201710522522 A CN 201710522522A CN 107122574 A CN107122574 A CN 107122574A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- mrow
- physical explosion
- msub
- gas line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Computational Mathematics (AREA)
- Civil Engineering (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Architecture (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of comprehensive estimate method that natural gas line physical explosion damages surrounding building scope, this method takes into account scope of the two kinds of occurrence situations of natural gas line physical explosion shock wave and natural gas line Explosion Seismic Waves to effect on building simultaneously.The particle movement velocity peak values evaluation method produced including natural gas line physical explosion shock wave attenuation rule and peak overpressure's evaluation method, natural gas line physical explosion shock wave to the stage division and natural gas line Explosion Seismic Waves of effect on building degree；And the application above method estimates that obtained parameter makes high pressure gas pipeline physical explosion shock wave and the scope of damage of neighboring buildings is classified.Method safety that the invention is proposed is reliable, strong adaptability, be adapted to many types of natural gas line, and versatility is good, easy to be easy-to-use, can be achieved to estimate natural gas line physical explosion seismic wave coverage in different directions, with good application prospect.
Description
Technical field
The invention belongs to pipe explosion research testing field, more particularly to natural gas line physical explosion is to surrounding building
Damage the evaluation method of scope.
Background technology
Natural gas is favored as a kind of efficient, cleaning energy by various countries.It is expected that in following more than 10 years, China's economy hair
Exhibition and resident will increase to the demand of natural gas in physical explosion formula.Because natural gas line is by near field construction behavior, ring
The influence of border burn into machinery or material failure, natural calamity and other X factors, causes have hair during physical explosion CRACKING ACCIDENT
It is raw, cause to do great damage to surrounding building.When high pressure gas pipeline bursts, 10~15MPa is up in pipe
Gas pressure effect under, pipeline initial crack along tube wall present over long distances extension cracking macroscopic failure phenomenon.Crack initiation
Process causes tube wall to be opened to both sides rapidly, and pipe inner high voltage gas outwards sprays at a high speed, causes body strong to rock soil medium around
Strong impact shock effect, will produce shock wave, and then decay into plastic-elastic stress ripple and the propagation of middle far field in the ground of near region
Elastic stress wave (seismic wave)., will if shock wave runs into the facilities such as neighbouring buried pipeline in field medium communication process
Decline its bearing capacity, or even overall deformation failure or a chain of leakage blast of initiation.And the seismic wave that middle far field is propagated may
All kinds of buildings or structures in ground are destroyed in various degree near causing.Current theoretical research can not be this to pressure piping quick-fried
Source carries out vibration velocity prediction, and shock wave damaging range is assessed.Therefore, researching natural gas pipeline physical explosion is to surrounding building
Damaging the size of scope has most important theories directive significance.Because the initial explosion of natural gas line belongs to physical explosion, its energy
Release has very strong directionality, has essential different from traditional chemistry of explosives blast, its energy releasing pattern also has bigger difference,
, can not be using traditional chemical blast experience to the destroying infection scope of surrounding enviroment after blast and natural gas line is embedded in underground
Formula is estimated.
The current main fuel factor with pipe explosion of research, based on fire hazards.《Daqing Petroleum Institute's journal》(2010
Year second phase) " pressurization-gas cascade physical explosion computation model " text for publishing summarizes domestic and international existing several high pressure gas
The computational methods of the tolerant physical explosion energy of body, these methods are only used for calculating total physical explosion energy, and line physical explosion energy is not proposed
Concept, also without referring to specific Related Computational Methods.Ritsu Dobashi, Satoshi Kawamura, Kazunori
Kuwana, et al.Consequence analysis of blast wave from accidental gas
explosions[J].Proceedings of the Combustion Institute,[2011(33):2295-2301] etc.
Distribution to airblast overpressure in space proposes TNO equivalent model methods, and the method is based on TNT equivalents basis, and it is empty
Gas shock wave attenuation mode and natural gas line physical explosion air-shock wave damped manner are far from each other.
At present, there is not yet utilizing natural gas tube diatom physical explosion energy computational methods and gases at high pressure physical explosion shock wave
Superpressure, seismic wave particle movement velocity peak values decay calculation method and estimation natural gas line physical explosion are to Adjacent Buildings
The technical scheme of scope of damage.
The content of the invention
Present invention aims at there is provided the estimation side that a kind of natural gas line physical explosion damages surrounding building scope
Method, this method takes into account two kinds of occurrence situations pair of natural gas line physical explosion shock wave and natural gas line Explosion Seismic Waves simultaneously
The scope of effect on building.Including natural gas line physical explosion shock wave attenuation rule and peak overpressure's evaluation method, natural
The matter that feed channel physical explosion shock wave is produced to the stage division and natural gas line Explosion Seismic Waves of effect on building degree
Point movement velocity peak value evaluation method；Estimate that obtained parameter makes high pressure gas pipeline physical exploding by the inventive method
Fried shock wave is classified to the scope of damage of neighboring buildings.Method safety that the invention is proposed is reliable, strong adaptability, be adapted to it is many types of
Natural gas line, versatility is good, easy to be easy-to-use, can be achieved to estimate natural gas line physical explosion seismic wave in different directions
Coverage, with good application prospect.
A kind of natural gas line physical explosion of the present invention damages surrounding building the evaluation method of scope, and this is estimated
Calculation method includes natural gas line physical explosion shock wave attenuation rule and peak overpressure's evaluation method, natural gas line physical exploding
The particle movement speed peak that fried shock wave is produced to the stage division and natural gas line Explosion Seismic Waves of effect on building degree
It is worth evaluation method, the parameter obtained by this method makes high pressure gas pipeline physical explosion shock wave to neighboring buildings
Scope of damage is classified, and concrete operations follow these steps to carry out：
Step 1：Related data is gathered：
Collection primary data includes：The interior gas initial pressure P of pipe diameter d, wall thickness h, pipe1, it is gas adiabatic exponent γ, big
Atmospheric pressure P0, body buried depth H1, covered soil density ρs, the wide L of laying groove under shed1, the wide L of upper shed2, earthing throwing height H2Deng
Master data；
Step 2：The line physical explosion energy conception of body inner high voltage natural gas and its estimation：
A, natural gas pipeline is modeled as to a uiform section, the hydrostatic column of endless, it is long using unit of account
Spend the line physical explosion energy of the physical explosion energy definition unit length body of body；Calculated using known thermodynamic process
Method calculates body initial gas line physical explosion ENERGY Eli；
The influence of b, elimination earthing to buried pipeline physical explosion energy：
Els=Eli-Es
In formula：The line physical explosion energy of Es-throwing earthing consumption, ρs- covered soil density, g-local gravity accelerates
Degree, H1- body buried depth, H2- earthing throwing height, L1- laying groove under shed width, L2Opened on-laying groove
Mouth width, d-outer diameter tube, Els- eliminate the body line physical explosion energy after earthing influence, Eli- body initial line physics
Explosion energy；
C, increase correction factor η carry out comprehensive modification：
El=Eli-ηEs
In formula：El- it is used for the line physical explosion energy that shock wave is estimated, η-line physical explosion energy correction factor；
Step 3：Natural gas line physical explosion shock wave attenuation rule parameter is calculated：
Peak overpressure of the natural gas line physical explosion shock wave at certain distance r is calculated by following formula：
In formula：Δ P-superpressure (unit is Kpa), El- line physical explosion can (unit be J), r-distance (unit is m)；
A1、A2、A3- it is fitted obtained constant coefficient value by a large amount of physical explosion shock-wave experiment data；
Step 4：Stage division of the natural gas line physical explosion shock wave to building extent of injury；
Standard is acted on to construction damage according to Related Impulse ripple superpressure, the safe superpressure on building is found out, and according to
The order of severity is classified to the extent of injury of building：
Step 5：It is each in correspondence step 4 to injure grade according to line physical explosion energy El and peak overpressure Δ P data, point
Each injury grade is not estimated corresponding apart from r, make high pressure gas pipeline physical explosion shock wave to neighboring buildings
Scope of damage is classified；
Step 6：According to initial gas line physical explosion ENERGY Eli, and following formula calculate obtain attenuation of seismic waves to not
The damage range Rv of generic building：
Rv=(η Eli)1/3(k/V)1/α
In formula：Eli- initial explosion energy：Units of joules (J), V-particle movement speed：Unit centimeters per second (cm/s),
Rv-distance：Unit rice (m), η-energy conversion factor:η=3.872 × 10-3, k-Ground coefficientk, α is damped expoential；
Step 7：Building three-level destruction minimum zone r is used as natural gas line physical exploding determined by selecting step 5
Fried shock wave effect scope radius Rs；Meanwhile, according to live building type, natural gas line System For Deep Explosion Seismic Sounding is determined with step 6
Wave action scope Rv；The smaller value in Rs and Rv is finally taken to be defined as natural gas line physical explosion to effect on building scope half
Footpath, i.e.,：R=min (Rs, Rv).
Embodiment
The present invention is not limited by following embodiments, can be determined according to the technical scheme of invention with actual conditions specific
Embodiment.Embodiment given by the present invention is easy for more fully understanding, the present invention is furture elucidated, it should be understood that these implementations
Example is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, those skilled in the art
Modification to the various equivalent form of values of the present invention falls within the application appended claims limited range.
Embodiment
Step 1：Related data is gathered：
Collection primary data includes：The interior gas initial pressure P of pipe diameter d, wall thickness h, pipe1, it is gas adiabatic exponent γ, big
Atmospheric pressure P0, body buried depth H1, covered soil density ρs, the wide L of laying groove under shed1, the wide L of upper shed2, earthing throwing height H2Base
Notebook data, and shock wave initial explosion ENERGY E is estimated according to this；
Step 2：The line physical explosion energy conception of body inner high voltage natural gas and its estimation：
A, natural gas pipeline is modeled as to a uiform section, the hydrostatic column of endless, it is long using unit of account
Spend the line physical explosion energy of the physical explosion energy definition unit length body of body；Calculated using known thermodynamic process
Method calculates body initial gas line physical explosion ENERGY Eli；
The influence of b, elimination earthing to buried pipeline physical explosion energy：
Els=Eli-Es
In formula：The line physical explosion energy of Es-throwing earthing consumption, ρs- covered soil density, g-local gravity accelerates
Degree, H1- body buried depth, H2- earthing throwing height, L1- laying groove under shed width, L2Opened on-laying groove
Mouth width, d-outer diameter tube, Els- eliminate the body line physical explosion energy after earthing influence, Eli- body initial line physics
Explosion energy；
C, increase correction factor η carry out comprehensive modification：
El=Eli-ηEs
In formula：El- it is used for the line physical explosion energy that shock wave is estimated, η-line physical explosion energy correction factor；
The estimation of natural gas line physical explosion shock wave energy
Assumed according to the Brown constant entropy expansion proposed, it is assumed that gas is constant entropy from original state to the process of final state
Process, body initial gas line physical explosion ENERGY E is calculated using known thermodynamic process computational methodsli：
In formula：Eli- body initial line physical explosion energy, P1Initial pressure in-pipe, P0- atmospheric pressure, d-pipeline
External diameter, h-pipeline wall thickness, γ-gas adiabatic exponent, π-pi；
Step 3：Natural gas line physical explosion shock wave attenuation rule parameter is calculated：
Air-shock wave propagates big with gas pressure in free field, the features such as spread speed is fast, gas during this
Gravity and viscosity can be ignored, gas can be assumed as ideal gas, according to the theory of similarity, natural gas line physical exploding
Fried peak overpressure of the shock wave at certain distance r is calculated by following formula：
In formula：Δ P-superpressure (unit is Kpa), El- line physical explosion can (unit be J), r-distance (unit is m)；
A1、A2、A3- it is fitted obtained constant coefficient value by a large amount of physical explosion shock-wave experiment data；
By a large amount of physical explosion shock-wave experiment lot of experimental data, fitting obtains constant coefficient A1、A2、A3Value, obtain
Peak overpressure of the natural gas line physical explosion shock wave at certain distance r；
In formula：Δ P-superpressure, unit is KPa, E-line physical explosion energy, and unit is J/m, and r-distance, unit is m；
Step 4：Stage division of the natural gas line physical explosion shock wave to building extent of injury；
Foundation《Safe evaluation method application guide》Middle positive pressure of shock wave is used construction damage, is found out on building
Safe superpressure, and the extent of injury carry out table 1 of building is classified according to the order of severity：
Injury grade of the positive pressure of shock wave of table 1 to building
Step 5：According to the superpressure calculation formula obtained in the shock wave Explosive Energy E, step 3 obtained in step 2, correspondence step
Positive pressure of shock wave is to the injury grade of building in rapid 4, and it is corresponding apart from r to estimate each injury grade respectively, using r as the model of radius
Enclose the scope of damage to neighboring buildings as high pressure gas pipeline physical explosion shock wave；
Step 6：Natural gas line Explosion Seismic Waves are to Influence on Architecture scope evaluation method：
1. primary power is calculated：
According to the evaluation method in step 2, gas line physical explosion ENERGY E in pipe is obtained；
2. seismic wave particle movement velocity peak values evaluation method is utilized：
Natural gas line explosion time, its primary power discharges in a variety of forms, for producing the elasticity propagated in media as well
Ripple (seismic wave) energy accounts for the 10%-20% of gross energy, the empirical equation according to seismic wave particle movement speed：
V=k (Q1/3/R)α
Export seismic wave particle movement velocity peak values evaluation method：
Rv=(η E)1/3(k/V)1/α
In formula：Q-explosive quantity, units of joules (kg)；V-particle movement speed, unit centimeters per second (cm/s)；R—
Distance, unit rice (m)；K-Ground coefficientk；α-damped expoential；E-initial explosion energy, units of joules (J)；V-particle fortune
Dynamic speed, unit centimeters per second (cm/s)；Rv-distance, unit rice (m)；η-energy conversion factor；
This formula is applied to general Blasting In Geotechnical, and the energy of natural gas line blast should carry out equivalent by correlation technique and change
Calculate, this method obtains pipe explosion primary power E and the dose Q in formula by the linear regression analysis of lot of experimental data, its
Conversion coefficient η=3.872 × 10-3, Ground coefficientk and damped expoential returned by experimental data and obtained, and can also pass through experience number
Obtained according to table, as shown in table 2：
The K value α values of table 2 and lithology relation
3. the vibration safety threshold value of building is determined：
Explosion Seismic Waves particle movement speed exceedes after certain numerical value, it will structure and component to building cause to damage
Wound.With reference to 2014 editions countries《Shotfiring safety code》, the anti-seismic performance of building be classified as common civil buildings thing, industry and
The big classification of commercial establishment, ancient building etc. 10, its corresponding secure threshold is as shown in table 3；
The vibration of building secure threshold of table 3
The distribution frequency domain of pipe explosion seismic wave main energetic is 10Hz~50Hz, therefore chooses corresponding frequency domain model in table 3
Corresponding particle movement speed smaller value is enclosed as surrounding building vibration safety threshold value；
It can consult《Shotfiring safety code》(GB+6722-2014) the maximum Safety Vibration Velocity of related building, such as table 3 are obtained
It is shown.Through test of many times data analysis, pipe explosion shock wave main energetic is distributed in the range of 10Hz-50Hz, therefore takes peace
During full permission vibration velocity, the minimum vibration velocity in the columns of 10Hz-50Hz mono- is chosen；
Step 7：The comprehensive estimate method that natural gas line explodes to effect on building scope：
Building three-level destruction minimum range r is used as natural gas line for the scope of radius determined by selecting step 5
Physical explosion shock wave effect scope Rs；Meanwhile, according to live building type, with the evaluation method in step 6, it is determined that naturally
Feed channel Explosion Seismic Waves coverage Rv, it is natural gas line physical explosion to effect on building to take smaller value in Rs and Rv
Scope radius, i.e.,：R=min (Rs, Rv)；
In use, it is live with reference to high pressure gas pipeline natural gas line physical explosion is carried out in the medium soil of gobi
Experiment, the application for damaging surrounding building natural gas line physical explosion the evaluation method of scope is illustrated：
Step 1：Related data information is gathered according to experimental field actual conditions：
Caliber d is 1422mm, and pipeline wall thickness h is initial pressure P in 21.4mm, pipe1For 13.3MPa, atmospheric pressure P0For
101325Pa, body buried depth H1For 2.5m, covered soil density ρsFor 1800kg/m3, the wide L of laying groove under shed1For 2m, above open
The wide L of mouth2For 10m, earthing throwing height H25m is taken, experimental site is middle hard rock medium, and K values take 170, α values to take 1.55, its periphery
Mostly common civil buildings thing, vibration safety threshold value takes 2cm/s；
Step 2：Pipeline physical explosion impacts the estimation of swash explosion energy：
A, pipe line physical explosion energy balane：
It is 1422mm according to caliber d, pipeline wall thickness h is initial pressure P in 21.4mm, pipe1For 13.3MPa, atmospheric pressure P0
For parameters such as 101325Pa, and γ=1.4 are taken to adiabatic exponent, according to according to high-pressure natural gas body line physical explosion energy
Estimation equation is drawn：
The influence of b, elimination earthing to buried pipeline physical explosion energy：
According to body buried depth H1For 2.5m, covered soil density ρsFor 1800kg/m3, the wide L of laying groove under shed1For 2m, on
Be open width L2For 10m, throwing height H2For parameters such as 5m, the body line physical explosion energy estimation equation after being influenceed according to elimination earthing
Draw：
C, increase correction factor η carry out comprehensive modification：
According to blast actual conditions, comprehensive modification is carried out using correction factor η, is intended by pipeline physical explosion experimental data
The comprehensive correction factor η for obtaining line physical explosion energy is closed, this application example takes 0.85 according to experiment η values：
Step 3：Natural gas line physical explosion shock wave attenuation rule is estimated：
Peak overpressure of the natural gas line physical explosion shock wave at certain distance r is calculated by following formula：
In formula：Δ P-superpressure (unit is Kpa), El- line physical explosion energy (unit is J), r-distance (unit is m),
A1、A2、A3- obtained constant coefficient value is fitted by lot of experimental data.Superpressure Δ P units are Kpa, line physical explosion energy ElIt is single
Position is J, is m apart from r units；
Step 4：Classification of the natural gas line physical explosion shock wave to building extent of injury：
Standard is acted on to construction damage according to Related Impulse ripple superpressure, the safe superpressure on building is found out, and according to
The order of severity carries out classification to its extent of injury and is shown in Table 4：
Injury grade of the positive pressure of shock wave of table 4 to building
Step 5：The superpressure of each injury grade is substituted into natural gas line physical explosion peak value of shock wave overpressure estimation equation,
Backstepping goes out corresponding apart from r, scope of damage of the natural gas line physical explosion shock wave to neighboring buildings is estimated, such as the institute of table 5
Show：
The pipeline physical explosion shock wave of table 5 is to Influence on Architecture scope
Step 6：Safe distance is estimated to Influence on Architecture scope evaluation method according to natural gas line physical explosion seismic wave
Various building structure damage vibration velocity threshold value is brought into natural gas line Explosion Seismic Waves particle movement velocity peak values to estimate
The ultimate range that seismic wave at formula, backstepping causes structural damage to surrounding buildingses is calculated, as shown in table 6：
The pipe explosion seismic wave of table 6 is to Influence on Architecture scope
Step 7：The comprehensive estimate that natural gas line explodes to effect on building scope：
Building three-level destruction minimum zone r impacts as natural gas line physical explosion determined by selecting step 5
Wave action scope radius Rs；Meanwhile, according to live building type, natural gas line System For Deep Explosion Seismic Sounding wave action is determined with step 6
Scope Rv；The smaller value in Rs and Rv is finally taken to be defined as natural gas line physical explosion to effect on building scope radius, example
Such as：It is 71 (m) to destroy the corresponding minimum range of grade three-level, and common civil buildings thing minimum safe distance is 94 (m), according to：R
=min (Rs, Rv) rules, comprehensive estimate natural gas line explodes is to effect on building scope radius：R=min (Rs, Rv)=
71(m)。
Claims (1)
1. a kind of natural gas line physical explosion damages surrounding building the evaluation method of scope, it is characterised in that the estimation side
Method includes natural gas line physical explosion shock wave attenuation rule and peak overpressure's evaluation method, the punching of natural gas line physical explosion
Ripple is hit to estimate the particle movement velocity peak values of stage division and natural gas line the Explosion Seismic Waves generation of effect on building degree
Calculation method, the parameter obtained by this method makes injury of the high pressure gas pipeline physical explosion shock wave to neighboring buildings
Scope is classified, and concrete operations follow these steps to carry out：
Step 1：Related data is gathered：
Collection primary data includes：The interior gas initial pressure P of pipe diameter d, wall thickness h, pipe1, gas adiabatic exponent γ, atmospheric pressure
Power P0, body buried depth H1, covered soil density ρs, the wide L of laying groove under shed1, the wide L of upper shed2, earthing throwing height H2Deng basic
Data；
Step 2：The line physical explosion energy conception of body inner high voltage natural gas and its estimation：
A, natural gas pipeline is modeled as to a uiform section, the hydrostatic column of endless, utilizes unit of account length pipe
The line physical explosion energy of the physical explosion energy definition unit length body of body；Utilize known thermodynamic process computational methods
Calculate body initial gas line physical explosion ENERGY Eli；
The influence of b, elimination earthing to buried pipeline physical explosion energy：
<mrow>
<msub>
<mi>E</mi>
<mi>s</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>&rho;</mi>
<mi>s</mi>
</msub>
<msub>
<mi>gH</mi>
<mn>2</mn>
</msub>
</mrow>
<mn>4</mn>
</mfrac>
<mrow>
<mo>(</mo>
<mn>2</mn>
<msub>
<mi>H</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<mi>d</mi>
<mo>)</mo>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>L</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>L</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
Els=Eli-Es
In formula：The line physical explosion energy of Es-throwing earthing consumption, ρs- covered soil density, g-local gravitational acceleration, H1—
Body buried depth, H2- earthing throwing height, L1- laying groove under shed width, L2- laying groove upper shed width,
D-outer diameter tube, Els- eliminate the body line physical explosion energy after earthing influence, Eli- body initial line physical explosion energy
Amount；
C, increase correction factor η carry out comprehensive modification：
El=Eli-ηEs
In formula：El- it is used for the line physical explosion energy that shock wave is estimated, η-line physical explosion energy correction factor；
Step 3：Natural gas line physical explosion shock wave attenuation rule parameter is calculated：
Peak overpressure of the natural gas line physical explosion shock wave at certain distance r is calculated by following formula：
<mrow>
<mi>&Delta;</mi>
<mi>P</mi>
<mo>=</mo>
<msub>
<mi>A</mi>
<mn>1</mn>
</msub>
<mfrac>
<msup>
<mrow>
<mo>(</mo>
<msub>
<mi>E</mi>
<mi>l</mi>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mn>1</mn>
<mo>/</mo>
<mn>3</mn>
</mrow>
</msup>
<mi>r</mi>
</mfrac>
<mo>+</mo>
<msub>
<mi>A</mi>
<mn>2</mn>
</msub>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<msup>
<mrow>
<mo>(</mo>
<msub>
<mi>E</mi>
<mi>l</mi>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mn>1</mn>
<mo>/</mo>
<mn>3</mn>
</mrow>
</msup>
<mi>r</mi>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<msub>
<mi>A</mi>
<mn>3</mn>
</msub>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<msup>
<mrow>
<mo>(</mo>
<msub>
<mi>E</mi>
<mi>l</mi>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mn>1</mn>
<mo>/</mo>
<mn>3</mn>
</mrow>
</msup>
<mi>r</mi>
</mfrac>
<mo>)</mo>
</mrow>
<mn>3</mn>
</msup>
</mrow>
In formula：Δ P-superpressure (unit is Kpa), El- line physical explosion can (unit be J), r-distance (unit is m)；A1、
A2、A3- it is fitted obtained constant coefficient value by a large amount of physical explosion shock-wave experiment data；
Step 4：Stage division of the natural gas line physical explosion shock wave to building extent of injury；
Standard is acted on to construction damage according to Related Impulse ripple superpressure, the safe superpressure on building is found out, and according to serious
Degree is classified to the extent of injury of building：
Step 5：It is each in correspondence step 4 to injure grade according to line physical explosion energy El and peak overpressure Δ P data, estimate respectively
Calculate each injury grade corresponding apart from r, make injury of the high pressure gas pipeline physical explosion shock wave to neighboring buildings
Scope is classified；
Step 6：According to initial gas line physical explosion ENERGY Eli, and following formula calculate obtain attenuation of seismic waves to inhomogeneity
The damage range Rv of other building：
Rv=(η Eli)1/3(k/V)1/α
In formula：Eli- initial explosion energy：Units of joules (J), V-particle movement speed：Unit centimeters per second (cm/s), Rv-
Distance：Unit rice (m), η-energy conversion factor:η=3.872 × 10-3, k-Ground coefficientk, α is damped expoential；
Step 7：Building three-level destruction minimum zone r is rushed as natural gas line physical explosion determined by selecting step 5
Hit wave action scope radius Rs；Meanwhile, according to live building type, natural gas line Explosion Seismic Waves shadow is determined with step 6
Ring scope Rv；The smaller value in Rs and Rv is finally taken to be defined as natural gas line physical explosion to effect on building scope radius,
I.e.：R=min (Rs, Rv).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522522.1A CN107122574B (en) | 2017-06-30 | 2017-06-30 | Method for estimating damage range of natural gas pipeline physical explosion to surrounding buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522522.1A CN107122574B (en) | 2017-06-30 | 2017-06-30 | Method for estimating damage range of natural gas pipeline physical explosion to surrounding buildings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107122574A true CN107122574A (en) | 2017-09-01 |
| CN107122574B CN107122574B (en) | 2020-07-28 |
Family
ID=59730642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710522522.1A Active CN107122574B (en) | 2017-06-30 | 2017-06-30 | Method for estimating damage range of natural gas pipeline physical explosion to surrounding buildings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107122574B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108460224A (en) * | 2018-03-19 | 2018-08-28 | 北京石油化工学院 | A kind of interior fuel gas constraint venting of dust explosion numerical computations length of field method for determining dimension |
| CN109783760A (en) * | 2019-01-07 | 2019-05-21 | 中国人民解放军军事科学院国防工程研究院 | A kind of armored concrete target plate explosion shock collapse fragment initial velocity calculation method |
| CN110598237A (en) * | 2019-07-01 | 2019-12-20 | 中国安全生产科学研究院 | Method and device for evaluating explosion hazard of underground pipeline |
| CN110781582A (en) * | 2019-10-09 | 2020-02-11 | 合肥泽众城市智能科技有限公司 | Method for evaluating explosion consequences of underdrain |
| CN111222238A (en) * | 2020-01-03 | 2020-06-02 | 辽宁工程技术大学 | Rapid prediction method for gas explosion shock wave propagation state for emergency rescue |
| 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 |
| CN117150807A (en) * | 2023-09-20 | 2023-12-01 | 中国石油大学(华东) | Hydrogen pipeline physical explosion shock wave overpressure prediction method considering structure dynamic fracture influence |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279680A (en) * | 2013-06-08 | 2013-09-04 | 南京理工大学 | Method and system for assessing human body trauma caused by air blasts |
| CN106126946A (en) * | 2016-06-28 | 2016-11-16 | 安徽理工大学 | A kind of mine disaster intercepts the determination method of emergency escape device installation site |
| CN106813106A (en) * | 2017-02-14 | 2017-06-09 | 中国石油天然气集团公司 | A kind of method for assessing natural gas line explosion hazard |
-
2017
- 2017-06-30 CN CN201710522522.1A patent/CN107122574B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279680A (en) * | 2013-06-08 | 2013-09-04 | 南京理工大学 | Method and system for assessing human body trauma caused by air blasts |
| CN106126946A (en) * | 2016-06-28 | 2016-11-16 | 安徽理工大学 | A kind of mine disaster intercepts the determination method of emergency escape device installation site |
| CN106813106A (en) * | 2017-02-14 | 2017-06-09 | 中国石油天然气集团公司 | A kind of method for assessing natural gas line explosion hazard |
Non-Patent Citations (3)
| Title |
|---|
| PAOLA RUSSO, FULVIO PARISI: "Risk-targeted safety distance of reinforced concrete buildings from natural-gas transmission pipelines", 《RELIABILITY ENGINEERING AND SYSTEM SAFETY》 * |
| 孙贵磊: "不同类型垫层对埋地管道爆炸超压影响", 《爆破》 * |
| 黄有波: "天然气管道燃烧爆炸危害评价研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108460224A (en) * | 2018-03-19 | 2018-08-28 | 北京石油化工学院 | A kind of interior fuel gas constraint venting of dust explosion numerical computations length of field method for determining dimension |
| CN108460224B (en) * | 2018-03-19 | 2021-10-22 | 北京石油化工学院 | Method for determining length size of indoor combustible gas constraint explosion venting numerical calculation domain |
| CN109783760A (en) * | 2019-01-07 | 2019-05-21 | 中国人民解放军军事科学院国防工程研究院 | A kind of armored concrete target plate explosion shock collapse fragment initial velocity calculation method |
| CN110598237A (en) * | 2019-07-01 | 2019-12-20 | 中国安全生产科学研究院 | Method and device for evaluating explosion hazard of underground pipeline |
| CN110598237B (en) * | 2019-07-01 | 2022-12-02 | 中国安全生产科学研究院 | Method and device for evaluating explosion hazard of underground pipeline |
| CN110781582A (en) * | 2019-10-09 | 2020-02-11 | 合肥泽众城市智能科技有限公司 | Method for evaluating explosion consequences of underdrain |
| CN110781582B (en) * | 2019-10-09 | 2023-03-24 | 合肥泽众城市智能科技有限公司 | Method for evaluating explosion consequences of underdrain |
| CN111222238A (en) * | 2020-01-03 | 2020-06-02 | 辽宁工程技术大学 | Rapid prediction method for gas explosion shock wave propagation state for emergency rescue |
| 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 |
| CN117150807A (en) * | 2023-09-20 | 2023-12-01 | 中国石油大学(华东) | Hydrogen pipeline physical explosion shock wave overpressure prediction method considering structure dynamic fracture influence |
| CN117150807B (en) * | 2023-09-20 | 2024-04-02 | 中国石油大学(华东) | Hydrogen pipeline physical explosion shock wave overpressure prediction method considering structure dynamic fracture influence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107122574B (en) | 2020-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107122574A (en) | A kind of natural gas line physical explosion damages surrounding building the evaluation method of scope | |
| Jiang et al. | Propagation and prediction of blasting vibration on slope in an open pit during underground mining | |
| Li et al. | An experimental study of a novel liquid carbon dioxide rock-breaking technology | |
| Xia et al. | A case study on the cavity effect of a water tunnel on the ground vibrations induced by excavating blasts | |
| CN107367203B (en) | A kind of blasting parameters optimization method ensureing above ground structure safety | |
| CN107990798B (en) | Method for determining blasting vibration safety allowable distance of civil buildings in mountainous areas | |
| CN107273696A (en) | A kind of evaluation method of natural gas line physical explosion to human injury's scope | |
| CN107227805A (en) | The method of construction of underground vibration damping wall | |
| Zhen-xiong et al. | Blasting Vibration Generated by Breaking‐Blasting Large Barriers with EBBLB | |
| CN114970129A (en) | Method for determining hole-by-hole blasting single-hole dosage of water spaced loading under micro-vibration control condition | |
| Chen et al. | Propagation laws of blasting seismic waves in weak rock mass: a case study of muzhailing tunnel | |
| CN112364489B (en) | Carbon dioxide blasting construction method for controlling damage and vibration effect of bedrock | |
| Zhou | Simulation Calculation of the Collapse Process of High‐Rise Steel Structure Energy‐Forming Cutting Blasting Demolition | |
| Man et al. | Frequency spectrum and wavelet packet analyses of blasting vibration signals for different charge structures in blasting peripheral holes | |
| Liu et al. | Feasibility study on the application of carbon dioxide phase change fracturing technology in a foundation pit of an open cut tunnel | |
| CN110645859A (en) | Protection method for blasting flying stones and vibration | |
| Olarewaju | Study on the impact of varying degrees of underground accidental explosions on underground pipes by simulation | |
| Miao et al. | Experimental study of bilinear initiating system based on hard rock pile blasting | |
| Xie et al. | Coupling charge blasting research | |
| Huang et al. | Safety evaluation of a collapsed turbine wind on the buried pipeline | |
| Sher et al. | Effect of borehole charge structure on the parameters of a failure zone in rocks under blasting | |
| Zhongxin et al. | Shock wave pressure analysis of underground structure associated with buried natural-gas pipeline explosion | |
| Zhao et al. | Numerical Simulation Analysis of the Influence of Blasting Vibration of Shallow Tunnel on the Surface Environment. | |
| Chengfei et al. | Research on Influence Law of Explosion Load on New Subway Cross-structure | |
| CN109101678B (en) | Determination method of blasting vibration safety criterion based on stress standard of liquid storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |