因此线弹性断裂力学可以很好地应用于大体积混凝土结构的裂缝稳定性分析和改进水工结构的设计方法。
Therefore, linear elastic fracture mechanics can be applied to stability analyses of cracks in mass concrete structures and to improving design methods of hydraulic structures.
对坝体裂缝扩展的分析计算，用断裂力学的理论和方法较为适宜。
And it is suitable to analyze dam crack propagating with fracture mechanics methods.
利用格利菲思强度准则和断裂力学原理求得了混凝土类脆性材料裂缝端部微裂缝区的边界方程。
A boundary 's equation of microcrack region near crack tip of such brittle materials as concrete has been obtained according to the Griffith' s criterion and fracture mechanics.
认为岩石断裂是岩石内部微裂缝成核、形成和传播的非平衡过程，导出了描述这个过程的微分方程。
Describing rock fracture as a non-equilibrium process in which micro-cracks nucleate, grow and propagate, a set of differential equation describing this evolution process is derived.
冻土区的冻胀、融沉给该地区道路和建筑物造成很大的危害，如使道路出现裂缝、沉陷、结构断裂、基础上拔等。
The frost heave and thawing settlement of frozen soil area can do great harm to the road and building which lies on it, such as the crack, settlement, fragile structures foundation element etc.
盆地深层的层间断层则是深层油气运移的重要通道，断裂和微裂缝发育区是腹部深层油气的富集区域。
The basin in-depth level the fault is the in-depth oil gas migration important channel, the break and the micro crack growth area is the abdomen in-depth oil gas concentrates the region.
分别应用断裂力学中的最大拉应力理论和应变能密度因子理论分析了重复压裂中水力裂缝的初始扩展和延伸方向。
By maximum tension theory and maximum strain energy density theory in fracture mechanics, created and propagation direction of new artificial fracture are analysized.
结论孤北古1井成气期主要在第三纪末—第四纪的沉降埋藏期，由于断裂和裂缝的产生使天然气从烃源岩中运移出来，并通过断裂和裂缝运移至构造高部位聚集成藏。
Conclusion The gas of well Gubeigu 1 was produced during subsidence and was buried in Tertiary. The gas migrates and accumulates from source rock to reservoir through fractures.
结果表明：断层面压力控制着断裂带内空腔和倾斜裂缝愈合的程度；
The big or small of the pressure exerted on fault surface controls the tightness and seal of spaces and inclination fractures in fault zone.
然后，采用克里金模型和断裂力学模拟系统，综合构造和成像测井裂缝解释资料，构建多场趋势克里金估计模拟模型。
Then, by integrating the Kriging system and fracture simulation system and using structure and imaging logging data, we constructed an multi-field Kriging estimation model.
为研究初始裂缝尖端起裂的条件和所需注水压力，依据断裂力学的复合型裂纹的脆性断裂理论，建立了裂缝尖端力学模型，给出了计算方法。
For researching crack initiation condition and water injection pressure needed, this paper built up a mechanics model of crack tip based on crisp fracture theory of compound crack.
剪切带的出现和由此引起微裂缝的发生是PET纤维拉伸形变的主要特征，而个别大分子束的断裂形成裂缝的广泛出现则是PAN纤维的主要特征。
It is the characteristic of the deformation of PET fibers that the shear bands occur and lead to the crack initiation during the process of the deformation.
平面上受构造位置和断裂位置共同控制，断裂带附近和高部位更容易形成好的裂缝储层。
In plane, because of the control action of structure and fracture position, near fracture belt and high position are easier to form a good fractured reservoir.
二是利用其变位不连续性模拟构件从微细裂缝到断裂的全过程；三是把钢筋和混凝土分别看成具有不同性质的微小构造单元来考虑其界面性质。
The specimen is divided into small elements using the concept of Voronoi polygons, and the elements are assumed to be the rigid bodies connected by the normal and tangential springs.
在塔中地区裂缝的发育与断裂和褶皱有密切的关系，通过对塔中I号断裂带和塔中5、10井井区的裂缝的统计，再结合各种测井方法对塔中地区的裂缝发育的特征进行描述和评价。
The development of the fracture is relation to rupture and fold. This paper stats Irupture and the fractures of well of 5, 10 in tazhong area and describes the distribution of fracture and es...
在塔中地区裂缝的发育与断裂和褶皱有密切的关系，通过对塔中I号断裂带和塔中5、10井井区的裂缝的统计，再结合各种测井方法对塔中地区的裂缝发育的特征进行描述和评价。
The development of the fracture is relation to rupture and fold. This paper stats Irupture and the fractures of well of 5, 10 in tazhong area and describes the distribution of fracture and es...
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