共查询到20条相似文献，搜索用时 828 毫秒
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本文探讨了三个问题:一是建立电磁-机械式动力三轴仪的教学模型;二是根据此模型对 DSZ-100型动力三轴仪作动态分析.得到了与实验结果相一致的结论;三是应用动态分析的结果讨论合理设计的可能途径. 相似文献
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In this paper, there problems are discussed. The mathematical model of the electromagnetic-type dynamic triaxial apparatus is presented. Based on this model, dynamic analysis is performed for the DSZ-100 type dynamic triaxial apparatus and the results of consistent with the experiments are obtained. The probable way of reasonable design is finally discussed by using the results of dynamic analysis. 相似文献
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天然石墨--形成的实验证据和特殊应用 总被引：1，自引：0，他引：1
MichioINAGAKI 《地学前缘》2005,12(1):171-181
简要讨论了碳前驱物的石墨化现象,总结了当有或无其他矿物共存环境下碳材料在承压条件下发生石墨化的实验结果。以这些实验研究成果为基础,讨论了自然界石墨生成的机理。此外,对天然石墨的某些特殊应用作了综述,如用作可再充电锂离子电池的阳极材料,特别是片状石墨用作泄漏重油的吸附材料等。 相似文献
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Pavel Vyskoc&#x;il 《Tectonophysics》1979,52(1-4)
Preliminary analysis of the new results of repeated levellings within the territory of the Bohemian Massif and its border with the Carpathians is made, and the correlation between horizontal gradients of vertical movements and main fault zones discussed. The results indicated the continuance of the main movement's tendencies, determined by the foregoing measurements. Also discussed are the vertical and horizontal crustal movements between the Bohemian Massif and the Carpathians. The active zones are connected with the main fault systems, and the horizontal movements indicated the spreading tendencies between both geological structures. These results are in accord with the tendencies of horizontal movements in the Soviet Carpathians. 相似文献
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V. S. Belyaev G. S. Bisnovatyi-Kogan A. I. Gromov B. V. Zagreev A. V. Lobanov A. P. Matafonov S. G. Moiseenko O. D. Toropina 《Astronomy Reports》2018,62(3):162-182
The results of MHD numerical simulations of the formation and development of magnetized jets are presented. Similarity criteria for comparisons of the results of laboratory laser experiments and numerical simulations of astrophysical jets are discussed. The results of laboratory simulations of jets generated in experiments at the Neodim laser installation are presented. 相似文献
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新疆尉犁蛭石矿工业蛭石化学法膨胀的实验研究 总被引：1，自引：0，他引：1
在对采自新疆尉犁蛭石矿的工业蛭石样品进行化学成分和XRD分析研究基础上,选用工业级双氧水作为化学膨胀处理剂进行化学膨胀处理试验研究,结果表明:工业蛭石的化学膨胀特点和影响工业蛭石膨胀效果的主要因素是其晶层层间域中的过氧化氢分子在分解过程中所产生的氧气压力。对蛭石样品用不同浓度的双氧水作用相同的时间或用相同浓度的双氧水作用不同时间后发现:用浓度为25%的双氧水处理工业蛭石样品可以达到大于4倍的体积膨胀,膨胀后的工业蛭石样品的结构特征无明显变化,并能保持工业蛭石膨胀产物的韧性。 相似文献
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饱和土体再固结变形特性若干问题研究 总被引：2，自引：0，他引：2
重点考察了冲击能大小、周围压力、土性对再固结变形规律的影响,对一种砂粘混合体土料制备的扰动土样进行了试验研究。这对于了解强夯冲击荷载作用下,不同土类地基的性状及其加固效果有重要意义。此外,还研究了饱和粘性土的扰动固结问题、临界孔隙水压力问题,并对不同排水条件下土体的次固结变形问题进行了讨论。 相似文献
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筑堤土防渗性状试验研究 总被引：2，自引：1，他引：1
结合淮河入海水道河道工程,通过渗透变形试验确定了筑堤土料的渗透变形型式、临界水力坡降和允许坡降,同时指出了采用泓道开挖土筑堤的施工控制措施、质量要求和防渗措施。 相似文献
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介绍了南京市危险废弃物处置中心填埋库区岩土工程地质特征，并介绍了国内外填埋材料方面的研究成果。就南京市危险废弃物处置中心填埋库区填埋坑的稳定、沉降、防渗等问题展开讨论，提出了较为合理的解决方案。 相似文献
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The results of the 35th Session of the International Geological Congress held in 2016 in Cape Town (South Africa) are discussed in this paper. The major scientific problems discussed at the most popular sections are considered. Among them are the early stages in the evolution of the Earth, studies of mineral resources worldwide, and the problems of the deep structure of the Earth, as well as modern fields of mineralogy. 相似文献
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利用自行设计开发的显微图像分析系统进行矿物粒度分析，将其结果与用水析、激光粒度分析、筛分分析所得结果进行对比，分析讨论产生数据差异的原因。 相似文献
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Doklady Earth Sciences - The results of isotope–geochronological study of Quaternary mafic volcanism in the Kapan neovolcanic center (Southern Armenia) are discussed. The rocks studied are... 相似文献
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试论灌浆压力对灌浆效果的影响 总被引：3，自引：0，他引：3
主要从理论上探讨、分析了灌浆压力对灌浆效果的影响,并根据不同灌浆理论结合地层条件及灌浆目的,合理选择和控制灌浆压力,从而达到较好的技术经济效果。 相似文献
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结合两个工程实例,介绍了用压浆加筋法处理两种不同类型的基桩质量缺陷的设计、施工工艺方法,并对加固处理后的效果进行了分析 相似文献
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Laboratory Investigation of the Effects of Temperature on the Mechanical Properties of Sandstone 总被引：1，自引：1，他引：0
An experimental study has been carried out as part of a wider programme of research in order to examine some of the physico-mechanical properties of the Jiaozuo Sandstone after exposure to extremely high temperatures. The mechanical properties of the rock under examination are discussed before the results of the thermo-mechanical response of the sandstone are presented and analysed. The range of temperature to which the sandstone has been exposed is 20–1,200 °C. The physical properties considered include the shape, volume, mass and density changes and the velocity of longitudinal and transverse elastic waves through the samples, before and after exposure to high temperature. The mechanical properties considered include the stress–strain response, the uniaxial compressive strength, the modulus of elasticity and the Poisson’s ratio. The results are analysed and discussed and possible mechanisms for the observed thermo-mechanical response, are postulated. 相似文献
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长期重复荷载作用下土体与邻近桩基相互作用研究 总被引：1，自引：0，他引：1
在前人研究的基础上,基于临界状态土力学理论,在Carter模型中引入临界重复应力的概念形成改进Carter模型;该模型概念明确、参数简单,可以合理地反映重复加卸载作用下土体主要特性。利用改进Carter模型,编制平面应变有限元程序,对长期重复加卸载作用下土体与临近桩基相互作用进行系统分析,探讨了长期重复加卸载作用下有桩和无桩时土体沉降和侧移的变化规律,并讨论了软土屈服面衰减系数、临界重复应力水平、临近桩基刚度等变化时桩土相互作用性状的变化,得出一些有益的结论。 相似文献
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Cherepashchuk A. M. Dodin A. V. Postnov K. A. Belinski A. A. Burlak M. A. Ikonnikova N. P. Irsmambetova T. R. Trushkin S. A. 《Astronomy Reports》2022,66(6):451-465
Astronomy Reports - The observed characteristics of the spectral and photometric variability of SS 433 are discussed based on the data for 2018–2021 and compared with earlier results. The... 相似文献