油藏数值模拟三维动态拟函数技术研究及实际应用

拟函数技术是油藏数值模拟中使用的重要技巧之一，它是将三维模拟模型转化为拟三维模型(二维模型)，将细网格模型转化为粗网格模型。节省了机时消耗，降低劳动量，提高了油藏数值模拟的效率，同时不影响数值模拟的精度，这主要是把相对渗透率和毛管压力曲线通过加权平均作一定程度的修改而实现的。目前拟函数计算方法有多种，着重对其中的动态拟函数进行了深入的研究，并用VB语言将其编制成软件，从而通过实例，理论联系实践进行了更进一步的研究。     

Geochemical features of trace and rare earth elements of pumice in middle Okinawa Trough and its indication of magmatic process

Pumice, the most widely distributed volcanic rock in Okinawa Trough, is loose and porous. Since its formation, it has definitely suffered from the denudation of the sea to different degrees. In order to truly reveal the geochemical features of pumice, we choose the method of mineral separation. Firstly, the phenocryst is separated from glass. Then the phenocryst is divided into light and heavy mineral compositions. By ICP-MS (inductively coupled plasma mass spectrometry) analytical technology, the contents of trace and rare earth elements in the whole pumice, the glass and the heavy and light mineral compositions are determined respectively. By researching the elemental geochemical features, the magma dynamic processes are found. It shows that the initial magma for the pumice in Okinawa Trough came from the depleted mantle, from which the N-MORB (normal type of mid-ocean ridge basalt) is formed, homologous with the local basalts. But they are formed in different periods of magma crystal fractionation. Featured with sufficient crystal fractionation for pumice, it is found that the earlier crystallizing minerals are olivine, plagioclase and pyroxene. The pumice magma, formed from the depleted mantle, was mixed with additional subduction-related materials (components), and contaminated with the mass from upper crust when it rose up into the crust. As the Okinawa Trough is a back-arc basin in its early back-arc spreading stage, its magmatism has a series of its own unique characteristics, different from not only the mid-ocean ridge expansion, but also the mature back-arc basin.     

Geochronology,petrogenesis, and tectonic setting of Late Triassic volcanic rocks of the Hadataolegai Formation,central Great Xing'an Range,Northeast China

In this study, new geochemical, zircon U–Pb, and Lu–Hf isotopic data are presented for volcanics from the Hadataolegai Formation of the central Great Xing'an Range (GXR) in Northeast China. These new data offer insights into the petrogenesis of the volcanics of the Hadataolegai Formation and the tectonic evolution of the Paleo–Asian Ocean (PAO) and Mongol–Okhotsk Ocean (MOO). These volcanics of the Hadataolegai Formation are divided into andesite‐trachyandesites and dacite‐trachydacites. Zircon U–Pb ages show that the volcanics of the Hadataolegai Formation erupted between 230 Ma and 228 Ma during the Late Triassic, which agrees with recently obtained data. The volcanic rocks in this study have low Y (9.9–21.1 ppm) and Yb (0.78–2.02 ppm) contents, high Sr (444–954 ppm) contents, and slight Eu anomalies (δEu = 0.82 to 0.94), similar to ‘adakite‐like’ rocks. The dacites were formed by fractional crystallization of coeval andesitic magmas. The zircons within the andesite and trachyandesite yield higher positive ε_Hf(t) values (+6.3 to +12.0) and model ages (T_DM2) between 860 Ma and 453 Ma, which indicates that the magmas were generated by a newly accreted continental crustal source. Moreover, some of the volcanics are relatively high in MgO contents. These characteristics indicate that the volcanic magmas were derived from the partial melting of delaminated lower crust and mixing with mantle materials. Combining these data with previous studies, we suggest that the magmatism in the central GXR was governed by extension due to the closure of the PAO and the back‐arc extension associated with the southward subduction of the MOO plate (western GXR, near the Erguna Block).     

高活性粉煤灰注浆材料的防渗特性及 在帷幕灌浆工程中的应用

高活性粉煤灰注浆材料与普通水泥注浆相比较,具有颗粒细、渗透性好、结石率高,强度可靠,耐久性好,成本低等优点,适用于岩土工程的防渗加固处理。实践证明,高活性粉煤灰注浆材料用于水库在坝的帷幕灌浆有较好的防渗抗渗效果,能显著提高坝基的防渗质量,是一种较为理想的防渗注浆材料。     

联合北斗优选MW组合和无几何相位组合实时探测和修复三频周跳

针对使用B1和B2频点组成的MW观测值受噪声误差和电离层延迟误差影响较大的问题,提出使用B2和B3频点观测值组成弱电离层超宽巷MW组合的方法。联合优选的北斗MW组合和2个弱电离层的无几何相位组合（1,0,－1）和（0,1,－1）进行周跳探测和修复实验。结果表明,采用B2和B3频点观测值组合的MW组合伪距噪声更小、探测精度更优,有利于周跳的探测和修复。     

无人机LiDAR系统在不动产测绘中的应用

结合无人机LiDAR系统特点,详细描述了无人机LiDAR系统技术工作原理、无人机LiDAR系统误差来源,并对无人机LiDAR系统在1∶500不动产测绘项目中的应用进行技术方法试验。成果的平面绝对位置、相对位置两项数学精度均满足相关规范和设计要求,提高了工作效率,增加了项目收益,为在同类项目中推广应用提供参考。     

气候变化对椪柑病害发生的影响及防治

利用从江县1981~2005年5~10月逐日温度、降水、蒸发及持续降雨日数等气候资料,对气候变化诱发椪柑果树发生黄龙病病害进行研究。结果表明,5月下旬旬平均气温和6月上、中旬旬平均气温超过27℃、5月下旬至6月各旬降水蒸发差为正值以及持续降雨日数超过5天是椪柑夏梢发生黄龙病病害的主要因子,5月上、中旬旬平均温度、旬降水蒸发差对黄龙病病害发生的影响不明显。春末夏初高温高湿是椪柑果树夏梢发生黄龙病病害的重要条件。     

谱分析的CLEAN方法及其在激变变星TT Ari短周期振荡分析中的应用

对适用于非等间隔时间序列的一维ＣＬＥＡＮ谱分析方法进行了研究。用模拟信号进行了检验,证实了它也适用于有噪声的序列,但谱质量和噪声强度密切相关,把这种方法应用到激变变变星ＴＴ Ａｒｉ的测光资料分析中,检测到近２０ｍｉｎ周期的准周期振荡。     

集聚信息 构建指挥监测中心

本文对上海市规划和国土资源行业指挥监测中心的总体情况、系统框架、运行环境、特色功能等内容进行了简要的介绍,对指挥监测中心系统建设中的涉及数据仓库建设及更新机制、车辆实时指挥调度、海量数据存储、快速浏览展示等实现方式进行了详细的介绍。     

岩溶充填物突出机理与防治

随着岩溶矿山开拓面的不断延深和排水量的不断增大,地下水位将持续下降。由于受到地下水垂直渗流的冲刷作用,岩溶充填物不断向深部运移与沉积。当巷道揭露储泥溶洞时,岩溶充填物便迅猛喷泻突出,造成突泥事故。为能引起从事岩溶矿山生产建设人员的重视,作者探讨了岩溶充填物突出的必要条件、突出机理及防治突出事故的措施。