陆相火山岩三重填图方法研究进展及应用示例

应用"火山构造-岩性岩相-火山地层"三位一体填图方法,以火山构造单元为范围来研究岩性岩相,建立地层层序和骨架,填制的地质图及火山岩相构造图,火山构造面貌清楚、层次分明、具较强立体感,能全面反映不同时期、不同阶段火山作用特点和演化规律,能客观、合理地反映火山作用过程。     

CMPI5多模式对南海上层海洋热含量的模拟比较

Seventeen models participating in the Coupled Model Intercomparison Project phase 5（CMIP5） activity are compared on their historical simulation of the South China Sea（SCS） ocean heat content（OHC） in the upper 300 m. Ishii＇s temperature data, based on the World Ocean Database 2005（WOD05） and World Ocean Atlas 2005（WOA05）, is used to assess the model performance by comparing the spatial patterns of seasonal OHC anomaly（OHCa） climatology, OHC climatology, monthly OHCa climatology, and interannual variability of OHCa. The spatial patterns in Ishii＇s data set show that the seasonal SCS OHCa climatology, both in winter and summer, is strongly affected by the wind stress and the current circulations in the SCS and its neighboring areas. However, the CMIP5 models present rather different spatial patterns and only a few models properly capture the dominant features in Ishii＇s pattern. Among them, GFDL-ESM2 G is of the best performance. The SCS OHC climatology in the upper 300 m varies greatly in different models. Most of them are much greater than those calculated from Ishii＇s data. However, the monthly OHCa climatology in each of the 17 CMIP5 models yields similar variation and magnitude as that in Ishii＇s. As for the interannual variability, the standard deviations of the OHCa time series in most of the models are somewhat larger than those in Ishii＇s. The correlation between the interannual time series of Ishii＇s OHCa and that from each of the 17 models is not satisfactory. Among them, BCC-CSM1.1 has the highest correlation to Ishii＇s, with a coefficient of about 0.6.     

薛家湾开源路高路堑边坡工程稳定性的三维有限元分析

针对准格尔旗薛家湾镇开源路高边坡欠稳工程,采用MIDAS/GTS有限元软件对其施工过程及边坡稳定性进行了三维数值模拟,得到了不同工况下的变形及支护完成后的安全系数,并与实际工程现场所测变形结果作了比较分析。结果表明,三维FEM计算结果与工程实际变形较为相似,其结果对类似高路堑边坡的设计及加固有一定的参考价值。     

一种新型六自由度波浪能装置的水动力学分析

浮子的能量收集效率对于装置发电效率的提升具有重要作用。针对传统浮子式装置仅具有一个自由度的问题,提出了一种新型六自由度波浪能装置。基于线性波理论和MMG(Ship Manoeuvring Mathematical Model Group)方法,建立了新型装置的水动力学模型。分析了此装置的浮子在线性波浪作用下的位移和速度。结果表明:新型六自由度装置可以同时收集浮子六自由度方向的动能,具有较高的波浪能收集效率。另外,浮子在垂荡方向上的动能远大于横荡、纵荡方向上的动能。分析了波浪能收集效率随波浪遭遇角与弹簧系数之间的变化规律,文中工作为新型波浪能装置的优化设计提供了有益参考。