数值稳定性

This paper focuses on the classification and control of the stability of the surrounding rocks of stopes and roadways on the background of Xiadian Gold Mine. The association method of actual measurement, theoretical analysis and numerical simulation is used to analyse and research the law.

本文以招金集团夏甸金矿为背景，围绕对夏甸金矿巷道及采场围岩稳定性进行分类与控制这一主题，根据夏甸金矿的实际工程地质和开采技术情况，采用现场实测、理论分析与数值模拟相结合的方法，有针对性地展开了分析研究。

The best approach was also used to inverse the mechanical parameters of rock mass surrounding the mining stopes in Xiangxi Gold Mine in Hunan Province.

将先应用遗传算法、后应用神经网络方法进行反演的智能化位移反分析方法，应用于反演确定湘西金矿老采区围岩的弹塑性模型力学参数，并应用反演结果对该区回采系统围岩的稳定性进行了数值模拟研究，研究结果表明，回采系统围岩是稳定的，回采方案是合理的。

Fracture is caused by sheet's tensile instability, Hill's totalized instability theories and Swift's diffuse instability theories which based on continuous mechanics are applied to isotropic blank; Marciniak and Kuczynski's theories are applied to orthotropic blank, which introduced thickness imperfections normal to the principal stress and strain direction as a groove pre-existing defects in the material. The stability of each part of blank at each moment is described by numerical method, and the results are shown by computer simulation, thus the fracture in sheet forming can be predicted preciously.

拉裂是由于拉伸失稳引起的，以连续体力学为基础的Hill集中性失稳理论和Swift分散性失稳理论应用到各向同性板料进行失稳判定；将Marciniak和Kuczynski的凹槽损伤失稳理论应用到正交各向异性板料拉伸失稳判定，对板料各处在成型过程中不同时刻的稳定性进行数值化描述，并运用计算机仿真技术进行直观的表现，可以准确地预测板料成型中可能出现的拉裂现象。

The numerical example validates the good accuracy and high efficiency of this method.

数值算例验证了本文方法具有精度高和稳定性好的特点。

Study on Three-dimension Seepage and Abutment Stability of Jinping High Arch Dam;2. This paper deals with the application of finite element method in the study of seepage field of sluice foundation.

应用有限元法对闸基渗流场进行计算，在计算过程中考虑排水效果和泥沙淤积的影响，得出渗流场的数值解，进而计算静水池的浮托稳定性，最后可确定静水池浮托稳定条件下的安全运用水头。

Geotechnical engineering software FLAC-3D was used to analyze and simulate Zhuchang river special bridge 4~# main pier foundation deformation and stability of slope rock mass under the condition of nature,construction of pile and carry,consolidation of anchor bar and existing design load.

利用岩土工程软件FLAC-3D对朱昌河特大桥4#主墩基础边坡岩体在自然条件下，桩及承台施工过程、锚杆加固过程以及施加设计荷载状态下的变形及稳定性进行了三维数值模拟分析。

In order to study the dynamic and instability rule and gain a damping evaluation method according to the test result, damping research ways of several foreign and domestic foil bearing types were compared. The interaction among cells was considered based on the approach of separating damping from stiffness. An effective damping evaluation method was developed based on the energy dissipation method. The structural damping of two-layer free plate foil bearing was analyzed on the basis of energy dissipation method.

为了更好地研究箔片轴承的动特性和稳定性，得出与实验结果相符合的评价方法，首先对国内外几种有关箔片轴承库仑阻尼的研究方法进行了比较，根据阻尼和刚度分离评估的思想，考虑箔片之间和箔片单元之间的相互作用，基于能量耗散的思想提出了一种有效的箔片轴承阻尼评估方法，最后对双层同向自由平箔结构箔片轴承的结构阻尼进行了详细分析和数值比较。

D net work numerical modeling technique for discontinuities of rock mass is a new technique developed recently, which can be a very important basic work to evaluate the stability and geometric parameters for engineering design in jointed rock mass.

岩体随机不连续面三维网络数值模拟技术是近年来逐步发展起来的一项新技术，该技术对坚硬块状节理化岩体的稳定性评价，及岩土工程设计几何参数的获取是一项重要的基础工作。

This study carried out laboratory experiments and FLOW-3D numerical simulation to investigate the effect of the installation of a diversion pier in a vortex chamber type extractor on promoting the stability of vortex and reducing water loss.

中文摘要本研究以室内模型试验及FLOW-3D数值模拟研究漏斗式排砂器内设置导流墩对提升涡流稳定性及降低耗水率之效果。

In the process of draining gas in gob area of a coal mine, the stability of surface drilling well and gas drainage effect were improved by studying different factors affecting the drainage effect and the term of service with the method of numerical simulation of computational fluid dynamics and field test.

在应用地面钻井抽采矿井采空区瓦斯的过程中，为了提高地面钻孔的稳定性及瓦斯抽采效果，采用CFD数值模拟和考察试验的方法研究了影响地面钻孔抽采效果和服务期限的不同因素。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。