石油污染对冻土热传导的影响     

Zhuravlev Igor Igorevich 《冰川冻土》2004,26(Z1):128-132

Complex experimental research of thermal properties of oil-contaminated frozen soils was carried out. On the basis of the obtained results the influence of the various factors connected with oil pollution on heat transfer in frozen soils was analyzed. And the model of heat transfer in frozen soils was offered.  相似文献   

Experimental research on reservoir sensitivity to stress and impacts on productivity in Kela 2 Gas Field     

Sun Longde  Song Wenjie  Jiang Tongwen 《中国科学D辑(英文版)》2004,47(Z2)

Kela 2 Gas Field, with high formation pressure (74.35MPa), high pressure coefficient (2.022) and difficulty of potential test and evaluation, is the largest integrated proved dry gas reservoir in China so far and the principal source for West-East Gas Development Project. In order to correctly evaluate the elastic-plastic deformation of rocks caused by the pressure decline during production, some researches, as the experiment on reservoir sensitivity to stress of gas filed with abnormal high pressure, are made. By testing the rock mechanic properties, porosities and permeabilities at different temperature and pressure of 342 core samples from 5 wells in this area, the variations of petro-physical properties at changing pressure are analyzed, and the applicable inspection relationship is concluded. The average productivity curve with the reservoir sensitivity to stress is plotted on the basis of the research, integrated with the field-wide productivity equation. The knowledge lays a foundation for the gas well productivity evaluation in the field and the gas field development plan, and provides effective techniques and measures for basic research on the development of similar gas fields.  相似文献   

月壤的物理和机械性质   总被引：46，自引：0，他引：46  

郑永春  欧阳自远  王世杰  邹永廖 《矿物岩石》2004,24(4):14-19

月壤是在O2、水、风和生命活动都不存在的情况下，由陨石和微陨石撞击、宇宙射线和太阳风轰击、月表温差导致岩石热胀冷缩破碎等因素的共同作用下形成的。月壤独特的形成过程，加上独特的月表环境，使月壤在粒度分布、颗粒形态、颗粒比重、孔隙比和孔隙率、电性和电磁性质、压缩性、抗剪性、承载力等方面均与地球土壤存在较大差异，这些参数的平均值和最佳估计值，可以作为月表机械设计和操作、宇航员装备设计、月球着陆场选址的主要依据，对月球资源开发和利用以及月球基地建设具有极其重要的意义。  相似文献   

水泥搅拌桩与锚杆组合支护结构的力学参数研究   总被引：1，自引：0，他引：1  

赵剑豪  陈振建  方家强 《岩土力学》2004,25(Z2):265-270

水泥搅拌桩--锚杆组合支护结构是一种新型的组合支护结构,笔者采用有限元方法进行各相关力学参数研究,分析了该组合支护结构的受力特性及变形性态.通过计算结果与实测数据的比较,表明本文所得结论对该组合支护结构的应用有一定的指导价值.  相似文献   

Relationships between texture and mechanical properties of hybrid rocks from the Jaala–Iitti complex, southeastern Finland     

M. Risnen 《Engineering Geology》2004,74(3-4):197-211

The relationships between petrographical and mechanical properties of rock aggregate raw materials from the hybridised, subvolcanic Jaala–Iitti complex, southeastern Finland, were investigated. Petrography was quantified from polished thin sections with a polarising microscope to determine the modal composition and grain size distribution, and resistance to fragmentation and abrasion were determined. Abundance of fine-grained minerals (especially of hornblende), fine grain size-dominated grain size distribution, uniform spatial dispersion of hornblende crystals, and intense micrographic intergrowth texture with interlocking grain boundaries were found to have the greatest positive influence on the mechanical properties. The results showed the potentiality of hybridised rocks as raw materials for high quality aggregates that can resist fragmentation and abrasion.  相似文献   

A rippability classification system for marls in lignite mines   总被引：1，自引：0，他引：1  

H. Basarir  C. Karpuz   《Engineering Geology》2004,74(3-4):303-318

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Émergence de la complexité dans un modèle simple de comportement mécanique des roches     

David Amitrano 《Comptes Rendus Geoscience》2004,336(6):505-512

We propose a mechanical model for the behaviour of rocks based on progressive damage at the elementary scale and elastic interaction. It allows us to simulate several experimental observations: mechanical behaviour ranging from brittle to ductile, fractal structure of the damage, power-law distribution of the damage avalanches. These macroscopic properties are not incorporated at the elementary scale, but are the results of the interaction between elements. This emerging complexity permits us to consider the strain rock process as a complex system characterized by non-linear dynamics. To cite this article: D. Amitrano, C. R. Geoscience 336 (2004).  相似文献   

Determining the climatic boundary between the Chinese loess and palaeosol: evidence from aeolian coarse-grained magnetite   总被引：3，自引：0，他引：3  

Qingsong Liu  Subir K. Banerjee  Michael J. Jackson  Fahu Chen  Yongxin Pan  Rixiang Zhu 《Geophysical Journal International》2004,156(2):267-274

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Magnetic properties of the profiles of polluted and non-polluted soils. A case study from Ukraine   总被引：7，自引：0，他引：7  

Maria Jele&#;ska  Agata Hasso-Agopsowicz  Barbara Kopcewicz  Anatoliy Sukhorada  Ksenija Tyamina  Magdalena K&#;dzia&#;ko-Hofmokl  Zhanna Matviishina 《Geophysical Journal International》2004,159(1):104-116

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Characterizing the properties of dissolved organic matter isolated by XAD and C-18 solid phase extraction and ultrafiltration   总被引：1，自引：0，他引：1  

Sara B. Schwede-Thomas  Yu-Ping Chin  Karl J. Dria  Patrick Hatcher  Edith Kaiser  Barbara Sulzberger 《Aquatic Sciences - Research Across Boundaries》2005,67(1):61-71

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