論天然氣儲存對環(huán)境安全性效應(yīng)評價-在線瀏覽
2024-08-08 20:47本頁面
【正文】 nce are the same with which in formula (1). 3 Energy estimation of explosion wave Explosion wave overpressure and damage effect Explosion energy release often by three forms of explosion wave energy, fragment energy and vessel remaining energy, but the explosion wave energy consumes %~% in the total[4]. Therefore, Destructive effect of damage caused by physical demolition or the chemical explosion is mainly because of overpressure of explosion wave, and its value may reach several even dozens of atmospheric pressures. At the same condition, explosion energy is bigger, the overpressure is bigger, and explosion energy attenuation with distance increases. The relations between explosion wave overpressure value and distance are shown in table 1. Table 1. Explosion wave Overpressure value of 1000kgTNTR0/mΔP0/MPaR0/mΔP0/MPaR0/mΔP0/MPaR0/mΔP0/MPaR0/mΔP0/MPa51020457061225507571430559081635601099184065144The criterions of destruction demonstration mainly include the overpressure criterion, the impulse criterion and the overpressure impulse criterion and so on. But the overpressure criterion is more monly used, namely thought that so long as the overpressure of explosion wave achieves certain value, will have the destruction injury function to the goal. The relations between overpressure of explosion wave and Destructive effect of damage are showed in table 2.Table 2. Overpressure damage to the building and the humanOverpressure valueΔP/MPadamage effectOverpressure valueΔP/MPadamage effect～partial crushing of door and window pane＜safety of personnel can be guaranteed～partial crushing of door and window on pression face～slight injury～to window frame～acoustic organs injury or fracture ～cracks on wall～viscera serious injury or die～wide cracks on wall and roofing tile dropping＞Most of people die～pillar breaking off, room looseness——～the wall collapsed——～shockproof concrete damagedthe little room collapsed——～largescale steel framework damaged—— Explosion wave overpressure value estimationThe explosion wave overpressure value is not only related with the explosion energy, but also with concerns from the explosion center distance. The research[5,7] indicated that when the different quantity39。s significance are the same with which in formula (2). Table 4. Relationship between Explosion levels and destruction of experimental parametersvalues range of CsDamage effectDamage level～serious damage for buildings and equipment produces, for people,% died of lung injury, greater than % injured of eardrum rupture, greater than % injured of explosion fly slice1～causing repaired damage for buildings, for people, greater than % injured of eardrum rupture, greater than % injured of explosion fly slice2～glass cracks, slight injured of explosion fly slice3～more than % glass cracks4Taking tank volume of 5000m3 for example, curves of explosion damage radius and explosion parameters are shown in fig. 4.Figure 4. Curve: Relationship between damages radius and test parameters Blast damage power is smaller with Cs is bidder and the higher of gas pressure the damage range is bigger. Data show that, when pressure increase from MPa to MPa, damaging radius of lev
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