水泥—丙烯酸盐复合浆液的实验性研究   总被引：5，自引：1，他引：5  

胡安兵  刘雪松等 《地质与勘探》2002,38(3):93-95

水泥-丙烯酸盐复合浆液是在丙烯酸盐浆液的基础上研制出来的一种复合浆液，它既保留了丙烯酸盐浆液流动性好，固结体弹性好的优点，又大幅度地提高了浆液的抗压强度和粘结强度，因此在注浆时可以带来良好的综合灌注效果，还对复合浆液的粘度和强度进行了试验性研究。  相似文献   

Mountain building and earth rotation     

L. L. A. Vermeersen  R. Sabadini  G. Spada  N. J. Vlaar 《Geophysical Journal International》1994,117(3):610-624

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Deglacial land emergence and lateral upper-mantle heterogeneity in the Svalbard Archipelago—I. First results for simple load models     

Doris Breuer  Detlef Wolf 《Geophysical Journal International》1995,121(3):775-788

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The singularity mystery associated with a radially continuous Maxwell viscoelastic structure     

Ming Fang  Bradford H. Hager 《Geophysical Journal International》1995,123(3):849-865

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地壳岩石与矿物的流变性研究综述     

叶发广 《岩石矿物学杂志》1995,14(1):84-92

地壳岩石与矿物的流变性主要受温度的控制，其次是受其成分的控制。在深部地壳高温环境下，岩石和矿物的流变性较强，应变相对均匀分布。在浅部地壳中，它们的粘滞性及各自间的粘滞性比显著增强，而流变性减弱，应变逐渐集中于适合流变和变形的岩石与矿物。流变性的这种变化导致了露头各种构造形迹的变化，如皱、布丁和剪切带等，以及各种显微构造特征的变化（如：变形矿物、压力影和膝折等）。岩石与矿物的这种物性概念在地质学中的运用，实质是将构造变形样式的形成机理分析趋于定量化和综合研究。  相似文献   

A preliminary study of the effects of some flow parameters in the generation of poloidal and toroidal energies within a 3-D spherical thermal-convective system with variable viscosity     

Albert T. Hsui  Woo-Sun Yang  John R. Baumgardner 《Pure and Applied Geophysics》1995,145(3-4):487-503

The effects of variable viscosity on flow dynamics within spherical shells are investigated using a finite-element thermal convection model, and preliminary result for cases with relatively low Rayleigh numbers and small viscosity contrasts are reported. These results demonstrate some general effects of viscosity variation on mantle dynamics, and, in particular, the generation of toroidal energy. Since lateral viscosity variations are necessary in the generation of toroidal motion in a thermally driven convective system, it is not surprising our results show that flows with greater viscosity contrasts produce greater amounts of toroidal energy. Our preliminary study further shows that solutions become more time-dependent as viscosity contrasts increase. Increasing the Rayleigh number is also found to increase the magnitude of toroidal energy. Internal heating, on the other hand, appears to lead to less toroidal energy compared wth bottom heating because it tends to produce a thermally more uniform interior and thus smaller viscosity variations.  相似文献   

Reflection and transmission ofSH waves in an initially stressed medium consisting of a sandy layer lying over a fluid-saturated porous solid     

M. D. Sharma  M. L. Gogna 《Pure and Applied Geophysics》1993,140(4):613-628

Biot's theory is employed to study the reflection and transmission ofSH waves in a sandy layer lying over a fluid-saturated porous solid half-space. The entire medium is considered under constant initial stress. Effects of sandiness, initial stress, anelasticity and viscosity of the interstitial fluid on the partitioning of energy are studied. In the presence of initial stress the incident wave starts attenuating when incider beyond a certain angle (depending upon the amount of initial stress), even if the medium is perfectly clastic. Anelasticity of the solid layer results in the dissipation of energy during transmission. The direction of attenuation vector of incident wave affects the dissipation energy to a large extent. Effect on partitioning of energy reverse at incidence after the critical angle. A complete account of energy returmed back to the underlying half-space and that which is dissipated in the overlying layer has been discussed analytically as well as numerically.  相似文献   

A SIMPLIFIED APPROACH TO MODELING 3D SEDIMENT-LADEN TURBULENT FLOWS     

Donghuo ZHOU  Sam S.Y.WANG 《国际泥沙研究》1996,(1)

ＡＳＩＭＰＬＩＦＩＥＤＡＰＰＲＯＡＣＨＴＯＭＯＤＥＬＩＮＧ３ＤＳＥＤＩＭＥＮＴ－ＬＡＤＥＮＴＵＲＢＵＬＥＮＴＦＬＯＷＳＤｏｎｇｈｕｏＺＨＯＵａｎｄＳａｍＳ．Ｙ．ＷＡＮＧＡｂｓｔｒａｃｔ：Ａ３－ｄｎｕｍｅｒｉｃａｌｍｏｄｅｌｆｏｒｓｉｍｕｌａｔｉｎｇｓ...  相似文献   

Influence of the Load Wavelength on the Permeability of a Viscosity Interface in the Mantle     

Čížková  Hana  Čadek  Ondřej  van den berg  Arie P. 《Studia Geophysica et Geodaetica》1997,41(1):64-72

Assuming a radially stratified Newtonian mantle in a steady-state approximation, we demonstrate that the permeability of a viscosity interface at 660-km depth strongly depends on the wavelength of buoyancy forces driving the flow. The flow induced by long-wavelength loads penetrates through the boundary freely even if the viscosity increases by two orders. In contrast, the boundary is practically impermeable for short-wavelength loads located in the upper mantle. Thus, a stepwise increase of viscosity is a significant obstacle for small descending features in the upper mantle, but huge upper mantle downwellings, or upwellings formed in the-lower mantle can overcome it easily. This indicates that certain care is necessary in interpreting the seismic structure of the mantle by means of flow models. The global tomographic image includes only the first few degrees of the harmonic series and, consequently, its interpretation in terms of a present-day flow field results in a predominantly whole-mantle circulation even for extreme viscosity contrasts.  相似文献   

褶皱分形分布的岩石力学机制研究          下载免费PDF全文

侯贵廷 《地球科学》1996,21(1):53-56

在褶皱形态的分形分析基础上，利用分形理论和褶皱的岩石力学成因理论推导出了褶皱的分数维（Ｄ）与岩层厚度（ｈ）和粘度（μ）的关系式，即找到了褶皱分形分布的岩石力学成因机制，在相同的构造应力场条件下，岩层的厚度和粘度越小，则越易产生较复杂的褶皱，即褶皱的分数维越大，因此，利用褶皱的分形测量，可以定量了分析褶皱形成的岩石力学性质，这是分形研究从形态研究到机制研究的一种探索。  相似文献