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- Meanwhile, the whisker orientation affects the shapes of the stress strain curves of the composites. 同时晶须取向也影响复合材料的热压缩应力-应变曲线的形状。
- An important aspect of the stress strain data in Fig. 78 is the linearity of the log-log plots. 图78中应力-应变数据的一个重要情况是在双对数座标上图线的直线性。
- The formulate of stress、strain and BEF have been deduced and all these have been testified by experiment. 通过实验,证明了这些公式的正确。
- The Relations Between Rockburst and Surrounding Rock Stress in Underground Chambers. 地下洞室中岩爆与围岩应力的关系。
- The results show that the method can be applied to strength behaviors and stress strain characteristics of plastic foamed beads light soil. 结果表明:该方法可以比较合理地对塑料发泡颗粒轻质土的应力-应变特征及强度特性进行评价;
- Using the elastic theory,the au-thor attempts to calculate approximately the relative change of rock stress after coalextraction. 本文试图利用弹性理论近似地计算采动后的应力相对变化。
- BQ method is suggested as one of favourable ways for evaluation and classification of rockmass quality in the low rock stress region. 采用岩体力学介质属性分级方法(即BQ法)对研究区引水洞、溢洪洞以及泄洪洞进口段围岩进行了岩体质量分级与评价。
- The earthquake spectrums analysis indicated that the failures of building structural steels at seismic areas are created of high stress strain and low cycle fatigue. 地震波谱分析表明,地震区建筑结构用钢受震时的主要失效形式是高应力低周疲劳损伤和断裂。
- In this paper,by the monitoring of rock stress behavior around mine opening and the monitory of anchoring force,the monitoring of the bolt is realized. 本文通过对巷道围岩的变形监测、锚杆锚固力监测达到对锚杆支护质量的监测。
- This thesis mainly researches whole performance of high-rise building disposed SRC column and partial stress、strain of SRC column,it belongs to the field of RC. 本文主要研究配置型钢混凝土柱的高层结构的整体工作性能和型钢混凝土柱的局部应力应变情况,属钢筋混凝土课题。
- Abstract: Rock stress state in situ is determined by the hydrofracturing method for rock stress measurement in a railway tunnel in northwestern Yunnan. 摘 要: 通过地应力测量,确定出工程区隧道围岩现今地壳应力状态,即原地应力的大小和方向。
- Some distribution rules of surrounding rock stress of the tunnel are summarized to provide the reasonable references to design and construction of this tunnel. 总结了该断层地段隧道围岩应力的一些分布规律,为该工程的设计和施工提供了合理的参考依据。
- The in situ rock stress prevents the rise of confined water and water inrush for thick floor aquifuge,but for thin floor aquifuge the in situ rock stress wo... 指出对于厚底板隔水层,原岩应力起着阻止底板承压水上升和突出的作用,对于薄底板隔水层,原岩应力起着破坏底板、导致承压水突出的作用。
- The in situ rock stress prevents the rise of confined water and water inrush for thick floor aquifuge,but for thin floor aquifuge the in situ rock stress wo. 介绍了水力压裂应力测量的原理和现场测量结果,论述了煤层底板隔水层带的阻水机理和承压水沿煤层上升的机理,以及原岩应力、水压与裂隙扩展的关系。
- By plasticity increment theory,the stress strain numerical calculate methods of bellows bulge forming, solvers theory calculating problems of bellows bulge forming technology are put forward. 采用塑性增量理论,建立了波纹管液压胀形的应力、应变数值计算方法,解决了波纹管液压胀形工艺的理论计算问题。
- Whatever the straight line part of the stress-strain curve may be,it is always possible to find out the rock stress threshold by the peak value of the S-wave veloc. 试验结果表明:不论应力应变曲线上的直线部分是否明显,都可以用检测横波速度最大值的办法确定岩石的应力门槛值;并建议对求岩石泊松比的常规方法有必要进行重新调整。
- The result indicates, the form of stress strain relations adding the structural parameter are converted into the hyperbolic form, and could be calculated with the expression of hyperbola. 结果表明,引入结构性参数后的应力应变曲线转化为有规律性的双曲线形态,并可用双曲线拟合计算。
- Different methods for the determination of initial rock stresses and the principle of its test borehole layout are also presented. 介绍了各种控制致裂测试钻孔布置原则及原岩应力的计算方法。
- Stress can be the undoing of so many fine players. 紧张可能是这许多优秀选手失败的原因。
- Abstract: This paper discribes the principle of rook acoustic emission techniques.Some applications such as insitu rock stress measuring,locating high stress zone,predicting roof falling and evaluating rook stability are presented. 文摘:论述了岩体声发射技术的基本原理,介绍了其在采矿工程中的若干应用成果:地应力测量、高应力区圈定、冒顶预测预报、稳定性评价。