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实验岩石学的研究表明,岩石中熔体的出现.可诱发断层作用,加强碎裂流动、位错蠕变和扩散蠕变作用。在给定的条件下,上述四种变形机制在部分熔融岩石中都会起作用,但只有那种能产生最快应变速率的机制占主导地位。而应变速率与岩石中熔体的百分数(体积)有关,因此,当熔体的百分数不同时,占主导地位的变形机制会有所不同。临界熔体百分数曾被当作反映部分熔融岩石流变学特征的一个重要参数,但近期的研究表明,临界熔体百分数受诸多因素的影响,或者说部分熔融岩石根本就不存在这样的植。熔体的出现极大地改变了岩石的流变学特征。 相似文献
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为提升企业的安全风险管控水平,以R化工厂的甲醇成品罐区为例,运用系统的危险源辨识方法对其设备、工艺过程、切罐、倒罐操作程序、生产作业活动等进行系统全面的危险源辨识,形成安全风险信息数据库。基于安全风险信息数据库,开发各种风险管控工具。利用信息化技术,构建安全风险管控信息系统,对企业实行动态化的安全管理。 相似文献
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Trends of the sunshine duration and diffuse radiation percentage on sunny days in urban agglomerations of China during 1960–2005 总被引:1,自引:0,他引:1
The long-term observational data of sunshine duration (SD) and diffuse radiation percentage (defined as diffuse solar radiation/total solar radiation, DRP) on sunny days during 1960–2005 were analyzed in 7 urban agglomerations and the whole of China. The results show that the sunny sunshine duration (SSD) has decreased significantly except at a few stations over northwestern China in the past 46 years. An obvious decrease of the SSD is found in eastern China, with the trend coefficients lower than − 0.8. Accompanied by the SSD decline, the sunny diffuse radiation percentage (SDRP) in most stations shows obvious increasing trends during the 46 years. The averaged SDRP over China has increased 2.33% per decade, while the averaged SSD shows a decrease of − 0.13 hr/day per decade. The correlation coefficient between SDRP and SSD is − 0.88. SSD decreased over urban agglomerations (small to large city clusters) in the past 46 years, especially in large cities and medium cities, due to the strong anthropogenic activities and air pollution represented by aerosol option depth (AOD) and tropospheric column NO2 (TroNO2). On the regional scale, SSD has an opposite trend from SDRP during 1960 to 2005, and the variation trends of regional mean values of SSD and SDRP in southeastern China are more pronounced than those in northwestern China. 相似文献
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Effects of EDTA on the accelerated carbonation behavior of steel slag used as cementitious materials
Chen Taiyue Xue Yu Zhao Xin Liu Jiaxiang 《Journal of Material Cycles and Waste Management》2023,25(3):1498-1508
Journal of Material Cycles and Waste Management - To utilize the steel slag (SS) on a large scale and sequester CO2, a room-temperature wet carbonation process with the assistance of... 相似文献
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