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爆腔
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  blasting cavity
     But studying in physical process Explosion of in single free face is less satisfactory. Conclusion is theoretic counting formula of effective stress field, press field, movement of blasting cavity and blasting crater by studying in-depth for blasting theory of extended charge and model of stress wave theory.
     本文通过对单自由面条件下延长药包的爆破机理深入的研究,结合应力波理论模型得出单自由面条件下延长药包的有效应力场、压力场、爆腔运动及爆破漏斗的理论计算公式。
短句来源
     According to the theory of shock waves, the smash district and its forming time, the blasting cavity radius and its expanding characteristics are all discussed in this paper.
     运用爆炸冲击波理论,讨论了炮孔柱状装药爆破时的岩石粉碎区及其形成时间、爆腔半径及其扩胀规律。
短句来源
     The results show that the principal factors effecting the smash district and the blasting cavity radius are strength of the shock wave,the characteristics of rocks and radius of the hole.
     通过分析表明:影响粉碎区半径和爆腔半径的主要因素是冲击波的强度、岩石的性质和炮孔尺寸等。
短句来源
     Applying the theories of blasting shock wave and based on the hypothesis that the rock belind the shock wave front is incompressible, the formation and radius of smashed district, expanding law and radius of blasting cavity and formation and radius of craked district are discussed, and the concept of crashed district in rock is put forward, which is induced by explosion shock.
     运用爆炸冲击波理论并假定冲击波波阵面后岩石介质不可压缩 ,探讨了岩石炮孔柱状装药爆破时粉碎区的形成并推导了粉碎区半径、爆腔半径、裂隙区半径的计算公式。
短句来源
  explosion cavity
     The expansion of cavity in rock blasting is resulted from common effects of shock wave and detonation gas,the compression of shock wave is occurred firstly and expansion of detonation gas is followed. During coupling column blasting of blasthole,the radius of explosion cavity is generally 1.15~1.30 times as much as the radius of blasthole,and the energy consumption in the course of the cavity expansion accounts for about 10% of the total blasting energy.
     岩石中装药爆破引起的扩腔是由爆炸冲击波和爆生气体共同作用的结果,并有冲击波压缩在先,爆生气体膨胀在后.炮孔偶合柱状装药爆破时,爆腔半径一般是炮孔半径的1.15~1.30倍,而爆腔扩胀过程中的能量消耗则占炸药爆炸总能量的10%左右.
短句来源
     Based on the explicit FEM code LS-DYNA3D and the viscous-spring boundary,the 3D elastic-viscous-plastic dynamic response model composed of explosion cavity,an underground structure,a shock isolation material and geologic backfills were established. The empirical relation was used during the simulation of the explosion cavity.
     基于显式有限元计算程序LS-DYNA3D和粘弹性人工边界条件,建立了爆腔-地下结构-软回填隔震层-岩土介质系统三维弹粘塑性动力响应分析模型,其中爆腔的模拟采用了经验关系式。
短句来源
  explosive cavities
     Tests and Calculation for Explosive cavities
     爆腔试验及计算
短句来源
     Experiments and test method for explosive cavities were introduced, and the rela tive measured data were given in this paper.
     介绍了爆腔试验及测试方法 ,给出了有关实测数据。
短句来源
  “爆腔”译为未确定词的双语例句
     During coupling column blasting,the features of deformation and destruction of rock by shock wave,the explosion of cavity by detonation gas,and moving of cracks by the detonation gas with considering advance damage are analyzed.
     在柱状耦合装药情况下,分析了冲击波作用下岩石变形和破坏的特点、爆生气体对爆腔的扩腔作用,考虑了在岩体的损伤情况下爆生气体对裂纹的驱裂作用。
短句来源
     Empirical prediction and numerical simulaion was consistent.
     数值计算最大爆腔半径与经验预估基本一致。
短句来源
     Such as the formation and development of cavitation and the formation of secondary wave were analyzed according to the simulation results.
     在模拟给出的最大压力时程曲线和爆腔发展时程曲线的基础上,对空腔的形成和发展规律以及次生波的形成等问题进行了研究。
短句来源
     The shock wave energy is consumed on forming cavity, crack and elastic deformation.
     本文就冲击波能量主要消耗在爆腔扩胀、形成裂隙和引起岩石弹性变形上作讨论。
短句来源
     It is shown that with the increase of the detonation elimination volume, the maximum igniting pressure decrease;
     随着消爆腔体积的增大,点火峰压单调下降,而点火冲量则呈先增大再减小的变化规律。
短句来源
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  blasting cavity
Expansion of a blasting cavity in a material with internal friction and dilation
      
  explosion cavity
Interaction of detonation products with walls of explosion cavity in ground and rock
      
In the first variant, gaseous detonation products penetrate into cracks, and the pressure in the explosion cavity and the cracks instantaneously equalizes.
      
Generation of geomagnetic disturbances is studied at the late stage of an underground nuclear explosion, where the originally displaced geomagnetic field penetrates into the explosion cavity again.
      
Low-frequency vibrations of a water-saturated medium in the neighborhood of an underground explosion cavity
      
Influence Exerted by Gas Leakages from the Explosion Cavity for a Spherical Charge on Rock Breaking
      
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Based on the theory of explosion model Similarity and the theory

本文将爆腔膨胀过程做了自模拟假设,基于流体动力学建立了爆扩过程的解析式。该式可反映空腔膨胀至回弹的全过程,而且形式简单,使用方便。实例证明,该公式可用于工程上的爆扩估计,并与实际吻合较好。

The long-duration blast wave action using a plane charge is an effective testmethod to study the propagation of plane waves in soil and the mutual action of soil medium onstructure. In this paper,the process of blast wave action using a plane charge is investigated bynumerical calculation and large scale outdoor tests. For the numerical calculation, a two-phasephysical model of TNT charge and real air is established.Using the Lagrangian partial differentialequations of one dimensional unsteady plane flow,the...

The long-duration blast wave action using a plane charge is an effective testmethod to study the propagation of plane waves in soil and the mutual action of soil medium onstructure. In this paper,the process of blast wave action using a plane charge is investigated bynumerical calculation and large scale outdoor tests. For the numerical calculation, a two-phasephysical model of TNT charge and real air is established.Using the Lagrangian partial differentialequations of one dimensional unsteady plane flow,the spatial distribution of the pressure on theshot cavity and the change of the pressure on the ground surface with time are given. After solving many technical difficulties on the simulation of high-overpressure by a plane charge in theoutdoor tests,the pressure loading of 45Mpa is obtained. By comparing the results of numericalcalculation with the measured values of the tests,the conclusion indicates that the oscillatingcharacteristics of the waveform and attenuation profile of the pressure versus time is in good accord with the test results. So,it shows that using a plane charge to simulate the high-Overpressureand long-duration blast wave action is a practical,effective and reliable method in engineeringapplication.

平面装药长持续时间爆炸作用是一种有效的试验手段,对土中平面波传播和土介质与结构相互作用的研究具有十分重要的意义。从理论计算和大型野外试验两个方面对平面装药爆炸作用过程进行了深入研究。在理论计算上,建立了TNT装药和真实空气双介质物理模型,利用一维不定常平面流动拉格朗日型偏微分方程组求解,给出了爆腔压力空间分布和地面压力随时间的变化结果。在野外试验中,克服了平面装药模拟高超压作用的许多技术困难,实现了高达45MPa的压力加载。文中将理论计算和野外试验结果进行了综合比较,结果表明压力波形的振荡衰减特征完全一致,从而证明了平面装药模拟高超压长持续时间爆炸作用是完全可以实现的有效而可靠的手段。

The study on pinhole closure of diagnostic pinhole in the cavity heated by radiation is reported. Laser Wavelength of 1. 053 μm, energy 300-400 J, pulse width -800 ps with Gaussian shape are used in the experiments. Two laser beams drive the Cavity target with two source regions. The sub-keV X-ray spectrum from source region and implosion region were measured by two sub-- keV X- ray energy spectrometers respectively through laser incidence hole and diagnostic hole. The pinhole closure problom was qualitatively...

The study on pinhole closure of diagnostic pinhole in the cavity heated by radiation is reported. Laser Wavelength of 1. 053 μm, energy 300-400 J, pulse width -800 ps with Gaussian shape are used in the experiments. Two laser beams drive the Cavity target with two source regions. The sub-keV X-ray spectrum from source region and implosion region were measured by two sub-- keV X- ray energy spectrometers respectively through laser incidence hole and diagnostic hole. The pinhole closure problom was qualitatively analysed and discussed.

研究辐射加热腔诊断孔堵口现象。实验采用波长为1.053μm、能量为300~400J、脉宽为~800ps的高斯型激光脉冲,双束对打具有双源区的腔靶。在激光入射口及内爆腔诊断口用两台亚千电子伏特X射线能谱仪监测源区与内爆区发射的X光谱。定性分析和讨论了堵口现象。

 
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