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blasting damage
    Mechanism Research on Blasting Damage and Fracture of Bedded Composite Rock and Its Engineering Application
    层状复合岩体爆破损伤断裂机理及工程应用研究
    Problems in the Definition of Blasting Damage Variable and Their Discussions
    有关爆破损伤变量定义中存在的问题及探讨
    The mechanism analyses of bedded rock blasting damage and fracture
    层状岩体爆破损伤断裂机理分析
    The blasting damage degree decreased with the increasing of distance,and gradually became indistinct.
    随着与爆源距离的增大,岩体爆破损伤程度减小,累积损伤效应逐渐变得不明显;
    Studies of Blasting Damage and Retaining Measures of Tunnel Rock
    巷道围岩的爆破损伤与支护对策研究
    The blasting damage and fracture process of rock is complicated dynamic evolvement process.
    岩石爆破损伤断裂过程是一个复杂的动态演化过程。
    (5) Based on the structure of DYNA-2D program in which rock and bedded composite rock blasting damage principal model was embedded, number simulation of the rock blasting process is realized, which proves built model accurate and reasonable 。
    (5) 将建立的岩石爆破损伤本构模型和层状复合岩体本构模型嵌入DYNA-2D程序框架,对岩体的损伤破坏过程进行了数值模拟,其结果验证了理论模型的正确性和合理性。
    So the blasting damage effect should be sufficiently thought during stability evaluation and support design of wall rock.
    因此在进行围岩稳定性评价及支护设计时,应充分考虑爆破损伤效应的影响。
    Based on the theoretical calculation of PPV in the near field of the blasting origin, the worldwide used method for evaluating blasting damage by PPV safety criteria deserve referring and popularizing.
    指出,国际上广泛应用的基于爆源近区质点峰值震动速度安全判据的爆破损伤评价与控制方法值得借鉴和推广。
    From the discussion of the advantages and disadvantages of the two kinds of definitions. It is point out that the definition method of damage method combining macro- and micro-theory is the best method of defining of it,and the development trend of the rock blasting damage theory.
    通过对这两类定义方法的优缺点进行讨论后指出 ,宏微观结合的损伤变量定义方法是以后损伤变量定义的最佳方法及岩石爆破损伤理论模型的发展趋势
    and by the blasting dynamic deformation ratio experiment of the big coal samples, the power function of the deformation ratio attenuation corresponding to the blasting deformation wave peak of the hard top-coal weakening blast is proposed; and based on that with the rock blasting damage models of Tarlor and Drady etc. , the distribution function of the macro-damage breakage degree of the top-coal weakening blast is derived;
    通过大煤样爆破超动态应变测试,提出坚硬顶煤预先弱化爆破的爆破中区应变波峰值体积应变符合幂函数衰减规律,并在此基础上,结合Tarlor、Drady等岩石爆破损伤演化模型,建立了坚硬顶煤预先弱化爆破宏观损伤破坏程度的分布函数,给出了相应的计算参数和系数,为分析和确定顶煤弱化爆破合理参数提供了基础。
    It not only helps further understanding of concrete blasting damage process and water hole blasting mechanism,but also provides an effective method for the study of blasting theory and engineering design.
    从而有助于深入了解混凝土爆破损伤破坏过程和导爆索水孔爆破的作用机理,为爆破理论研究和工程设计提供了一种有效方法。
    An effective method for the deep understanding of concrete blasting damage process and water coupling blasting mechanism has been provided,which is of great significance to the actual blasting engineering.
    为深入了解混凝土爆破损伤破坏过程和导爆索水孔爆破机理提供了一种有效方法,对实际爆破工程有十分重要的意义。
 

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