The damage propagation of rock under the freezing and thawing condition is a new direction of rock damage mechanics.
岩石冻融过程的细观损伤研究是近年来冻融损伤研究的一个新方向。
It is difficult to detect the absolute density of rock by ct image in quantitative analysis of rock damage process in compression.
用CT图像定量分析岩石受力损伤破坏过程的难点，是难以知道岩石内部的绝对密度变化量。
The results can provided some ideas in considering the rock damage criterion for rock failure mechanism study under water jet impact.
数值分析结果可为水射流破岩机理研究中岩石破坏准则的选择提供依据。
Energy dissipation leads to rock damage and lithologic deterioration while energy conversion is the internal cause for rock tensile fracture.
能量耗散使岩石产生损伤，并导致岩性劣化；能量转化则是引发岩石拉伸破坏的内在原因。
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的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。
The relationship between rock damage and rock fragmentation is studied by using advanced experimental technique and fractal geometric methods.
应用先进的实验技术和分形几何方法研究了岩石损伤与岩石破碎。
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.
在分析现有岩石爆破损伤模型和岩石爆破损伤断裂理论的基础上，建立了新的岩石爆破损伤模型。
Then a rock damage evolutional equation was proposed by the authors based on theory of fuzzy probability measurement, and on micro-analysis and macro-observations.
并从微观分析到宏观现象，由模糊概率测度思想提出了岩石损伤累积方程。
Based on the experiments of exploding on the surface of the cement sample, the phenomenon of the rock damage and fracture by shock waves in exploding was simulated.
通过水中爆炸波对水泥试样的损伤破坏实验来模拟水力裂缝层内爆炸采油中激波使岩石损伤开裂的现象。
A computational method for rock damage variable is presented based on the stress-strain curve; the acoustic emission test result shows that this method is reasonable.
岩石损伤变量的计算方法，提出了基于应力-应变曲线上的声发射测试结果表明，该方法是合理的。
Therefore, describe the fractal feature of acoustic emission time sequence by correlation dimension and research the evolution law of rock damage and failure process.
本论文采用关联维数来描述岩石声发射时间序列的分形特征，研究岩石损伤破坏过程的演化规律。
Proved by the test data, the precision of constitutive model with brittle, ductile failure is higher, which can provide accurately the basis for rock damage assessment.
经实测数据与所建模型对比验证，延性破坏、脆性破坏模式本构模型精度较高，可为岩石损伤评估提供依据。
This paper also presents several rock damage model reflecting the softening and joint behaviour of rock masses in addition to the introduction of meso and statistical models.
文内除了列举几种反映岩体软化及节理裂隙性质的损伤模型外，还介绍了细观与统计损伤模型。
By use of dynamic strain testing, the ultrasonic wave, bedded composite rock damage and fracture mechanisms and the fragmentation process during blasting have been experimentally studied.
运用超动态应变测试技术、超声波检测仪对层状复合岩体的爆破损伤破坏机理和破坏过程进行了实验研究。
The rock damage model and the damage-coupling model suited to analyze the whole process of water jet breaking rock were established with continuum damage mechanics and micro damage mechanics.
运用连续损伤力学和细观损伤力学理论，建立了适用于水射流破岩全过程分析的岩石损伤模型以及宏细观损伤的耦合模式。
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、断裂理论的最新研究成果，研究了岩石和层状复合岩体在爆炸应力波和爆生气体作用下的损伤断裂机理。
Landslides and rock falls contributed to the damage.
地震导致的山体滑坡和落石致使了这些损害的发生。
The lava that flows slowly like a wave down the mountain causes far more damage because it buries everything in its path under the molten rock.
像波浪，下山缓缓流动的熔岩造成的损失远远多因为它把一切埋在它的路径在熔融的岩石下。
When boiling rock erupts from a volcano and crashes back to earth, it causes less damage than you might imagine.
当煮沸的岩石从火山爆发和撞回地球时，它的损伤较小超乎你的想象。
The lava that flows slowly like a wave down the mountain causes far more damage because it buries everything in its path under the molten rock.
从山上慢慢流动下来的岩浆产生更大的破坏，因为融化的岩石会将路上所有的东西都摧毁。
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，也为进一步建立岩体结构合理的损伤演化方程、本构关系和研究岩石破坏机理提供了科学依据。
Using mercury to separate gold from rock, millions of small-scale miners worldwide inhale toxic vapors during the refining process, exposing themselves to neurological and genetic damage.
由于用水银从矿石中分离金，全世界数百万小规模采矿者在精炼过程中吸入水银蒸汽，使他们的神经和遗传受到损害。
Due to the heterogeneity, rock failure mainly results from tensile damage but shear damage still exists, which has influence on the shear strength.
由于试样细观缺陷非均匀性的存在，导致岩石断裂主要由拉伸破坏引起，但拉剪混合破坏仍然存在，并对抗剪强度有较大的影响。
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。
In mining engineering, strata models are often simulated by similar material simulation model, rock bending deformation and fracture damage is the serious problem.
而在采矿工程中，相似材料模拟的往往是层状模型，岩层的弯曲变形和断裂破坏是关键问题。
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，在光面爆破设计与施工中，均未考虑主爆孔先爆造成光爆层岩石损伤对光面爆破参数的影响。
Reservoir pressure decline, the increase of recovery rate and the damage of rock structure are main reasons of micro fine migration and sand production during oil recovery process of such reservoirs.
疏松砂岩油藏开采过程中，油层压力下降和采油速度的增加以及岩石结构的破坏，是造成油层岩石微细粒运移和油井出砂的主要原因。
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.
通过对岩石试样在加载前后测得的CT数作差值运算，可获得岩石试样在不同应力阶段的CT密度损伤增量。
By introducing a damage variable expressed by the equivalent shear stiffness, a dynamic shearing damage constitutive model of rock is established including three phases.
定义了用等效剪切刚度表示的损伤变量，建立了一个分三阶段表述的岩石动态剪切损伤本构模型。
By introducing a damage variable expressed by the equivalent shear stiffness, a dynamic shearing damage constitutive model of rock is established including three phases.
定义了用等效剪切刚度表示的损伤变量，建立了一个分三阶段表述的岩石动态剪切损伤本构模型。
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