• When boiling rock erupts from a volcano and crashes back to earth, it causes less damage than you might imagine.

    煮沸岩石火山爆发地球时,损伤较小超乎想象

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  • At the same time, some scientific hypotheses of the damage evolution equations and stress-strain relationship as well as the failure mechanism of rock mass are also proposed.

    同时为进一步建立岩体结构合理损伤演化方程本构关系研究岩石破坏机理提供了科学依据。

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  • The blasting damage and fracture process of rock is complicated dynamic evolvement process.

    岩石爆破损伤断裂过程个复杂动态演化过程。

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  • At present, in the design and construction of smooth blasting, considering few influence that main blast hole 'first blast damage to rock of smooth blasting parameters.

    目前光面爆破设计施工均未考虑孔先爆造成光爆岩石损伤光面爆破参数影响

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  • Then the statistical damage constitutive model is developed for saturated and unsaturated rock based on the mixture theory.

    混合物理论基础建立饱和非饱和岩石损伤软化统计模型

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  • Taking the influence of microdefects into account, a new constitutive relationship of damage is developed, and applied to different models of rock with different porosities.

    本工作考虑这些缺陷影响建立损伤本构理论将其应用于根据岩石所含孔隙度不同而提出的不同模型

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  • Rock density damage increment with ct can be obtained by subtracting ct number of the undisturbed rock samples from that of the loaded rock samples.

    通过岩石试样加载前后测得CT作差值运算,获得岩石试样在不同应力阶段的CT密度损伤增量

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  • By introducing a damage variable expressed by the equivalent shear stiffness, a dynamic shearing damage constitutive model of rock is established including three phases.

    定义了等效剪切刚度表示损伤变量建立了一个三阶段表述的岩石动态剪切损伤本构模型

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  • Finally, the evolution law of rock scale on the damage properties is discussed.

    最后探讨了岩石尺寸损伤特性演化规律

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  • Basen on the criteria of the peak particle velocity(PPV) for blast-induced damage, the design approach for excavation blasting near contour of rock slope is discussed.

    基于岩石爆破损伤影响范围控制质点峰值振动速度判据,就临近岩石边坡开挖轮廓面的爆破开挖设计方法进行了探讨。

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  • Based on random distribution of interior defect in rock, a statistical damage constitutive model for rock is developed by using the continuous strength theory and statistical theory.

    结合连续强度理论统计理论,岩石内部缺陷分布随机性出发建立岩石统计损伤本构模型

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  • The results show that thermal cracking damage of rock is a general phenomenon highly affecting mechanical properties of rock.

    结果表明岩石开裂损伤一种普遍现象,并对岩石力学性质等有显著影响

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  • The results indicate that the variation of ultrasonic velocity can reflect the damage degree of rock well, and the damage properties of rock can provide basis for the design of rock blast.

    结果表明岩石超声波速变化可以很好地反映岩石损伤程度,得出岩石损伤特性可以岩石爆破设计提供依据

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  • It is difficult to detect the absolute density of rock by ct image in quantitative analysis of rock damage process in compression.

    CT图像定量分析岩石受力损伤破坏过程难点,难以知道岩石内部绝对密度变化量。

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  • The damage propagation of rock under the freezing and thawing condition is a new direction of rock damage mechanics.

    岩石冻融过程细观损伤研究近年来冻融损伤研究的一个方向

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  • The course of rock deformation is complicated and easily influenced by environment factor and the key is the initial damage state that influences the fracture.

    岩石变形过程复杂环境因素的影响,影响其破坏初期损伤状态关键

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  • Based on the existing damage model of rock blasting and the theory of rock damage and fracture, a new damage model for rock blasting has been founded.

    分析现有岩石爆破损伤模型岩石爆破损伤断裂理论基础上,建立了新的岩石爆破损伤模型。

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  • And with the introduction of the Modulus of Elasticity from Budiansky method, the general damage model of rock blasting is established in the paper.

    引入有效弹性量,建立了爆破作用的岩石损伤全过程模型

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  • The evolution law of CT number and CT images in the complete process of damage failure of frozen cracked rock is studied.

    分析冻结裂隙岩石加卸载损伤全过程CT图像CT演化规律

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  • Considering the relationship of the attenuation of wave and damage energy dissipation, a new rock damage model is developed for rock blasting.

    在考虑岩石冲击损伤过程声波衰减规律及其与能量耗散率关系的基础上,建立新的岩石爆破损伤模型

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  • Based on the existing research results and up to the minute theory of rock damage and fracture mechanics, the blasting damage and fracture mechanism of rock and bedded composite rock is studied.

    本文基于前人的研究成果,采用岩体损伤断裂理论最新研究成果,研究了岩石复合岩体在爆炸应力波爆生气体作用下的损伤断裂机理

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  • Thus, it is very important to study the damage ct values of rock subjected to different freezing rates.

    因此研究冻结速度岩石损伤结构影响具有重要意义。

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  • The energy dissipation is related to the internal damage of rock to some extent.

    岩石能量耗散一定程度上反映了岩石内部损伤破坏情况

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  • At the process of ct crack and rapture evolution, the acoustic emission can not precisely reflect the meso-mechanism of rock deformation and rapture because of localization of damage.

    CT尺度裂纹演化破坏阶段,由于岩石损伤高度局部发射率参数不能精确反映岩石破坏细观机制。

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  • The research of damage characteristics of cracked rock in cold region is one of the fundamental projects in the rock mechanics research field in cold region.

    西部寒区裂隙岩石损伤破坏机理研究目前寒区岩石力学领域基础性研究课题之一

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  • Finally, based on geometrical damage mechanics, the initial damage tensor of REV of rock at mesoscale is obtained, and then introduces it into g.

    最后依据几何损伤理论得到基于岩石细观量化试验岩石REV初始损伤量,引入到g。

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  • Results show that rock damaged under cyclical impact will obviously bring confining pressure effect, and the existence of confining pressure also increased the ability of rock against impact damage.

    结果表明岩石循环冲击损伤具有明显效应,围压存在提高岩石冲击破坏的能力

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  • Giving an imitation of traditional plastic theory , a damage surface model on brittle rock about temperature in stress-space is introduced and the evolutionary law is discussed qualitatively.

    参照经典塑性力学屈服理论引入了温度作用下应力空间脆性岩石损伤模型定性讨论了荷载温度影响下损伤面时的演化规律

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  • The rock damage evolution rules are discussed.

    探讨了脆性岩石动态损伤演化规律

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  • The rock damage evolution rules are discussed.

    探讨了脆性岩石动态损伤演化规律

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