Web GIS在省级防汛指挥决策信息服务子系统中的应用研究

随着Web技术与GIS技术的迅猛发展,设计开发基于Web GIS的大型防汛指挥信息服务系统已变为可行与必须。结合黑龙江省防汛指挥信息服务子系统的设计开发实际,研究使用基于B/S体系的Arc IMS作为Web GIS的解决方案;研究解决应用Arc IMS中的几个关键技术问题:以正向与反向信息查询为例,研究设计信息查询的数据流程;为便于空间数据的管理与应用,研究图层的划分与组织方法;为达到经济与实用的目的,研究不同比例尺地图的无视觉差切换;为按用户要求表现地图,研究如何编写地图配置文件。还给出了这些关键技术在实际设计开发中的应用效果。     

单二块稠油油藏剩余油分布规律研究及应用

活跃边底水稠油油藏高轮次吞吐以后，由于受储层非均质性，开采方式，油藏边底水，射孔井段等因素影响。剩余油分布规律复杂，蒸汽吞吐开采效果变差。通过对活跃边底水稠油油藏高轮次吞吐阶段剩余油分布规律和影响因素的研究，利用新钻井，定向侧钻，扶停产井完善井网，采用补孔扩射调整注汽产液剖面，注氮气或注氮气加化学剂控制水锥等手段，改善了高轮次吞吐稠油油藏开发效果，在单家寺稠油油藏应用后取得了较好的成效。     

基于C-C方法的Lyapunov指数计算

识别混沌是对非线性时间序列进行分析，预测，控制的基础，克服已有文献用Lyapunov指数识别混沌时计算Lyapunov指数的不足，用C－C方法计算相空间重构的参数，然后利用混沌的遍历性及定义，提出计算最大Lyapunov指数的新方法，典型实例证明新算法的高效性与正确性。     

Current horizontal strain field in Chinese mainland derived from GPS data

Introduction In the years when the reliable data could not be obtained and in the analysis of strain property and magnitude in history, the intensity, property and activity pattern of strain field were mainly inferred on the bases of geometric characters of surface traces and behaviors (especially the faults) as well as the characteristics of petrology (XIE, et al, 1993; Molnar, Tapponnier, 1975, 1977; Tapponnier, Molnar, 1977; FU, et al, 2000). However, they are the averaged results accumu…     

一种新的优化灌溉制度算法——自由搜索

应用现有典型算法求解灌溉制度优化设计模型时,由于各种算法本身存在着不足,可被接受的模型最优解往往不能够被成功搜索到。自由搜索(Free Search,FS)是一种新的优化算法,对其进行了适当改进,针对灌溉制度优化设计模型实例,在不同的可供水量下,应用FS算法对该模型进行求解。结果表明,FS算法表现出良好的稳健性和收敛性;与以往的动态规划逐次逼近法(DPSA)、遗传算法(GA)及混沌算法(CA)对该实例的寻优结果相比,FS算法提高了寻优精度。FS算法原理简单,操作简便,是一种较好的优化灌溉制度的新方法。     

深埋特长雪峰山公路隧道工程地质勘察技术研究

雪峰山隧道为深埋特长隧道。在该隧道的勘察过程中运用了大量高新技术,并开展了科研工作,对隧道围岩特性、地质构造、地应力场及岩爆、涌水量、围岩稳定性等与隧道设计、施工密切相关的问题均作出了准确的判断和预测。本文论述了一些新的勘察技术及科研成果,这些勘探与评价技术对其它深埋特长隧道有较好的借鉴作用。     

长株潭城镇密集区范围的界定

通过借鉴国内外各类城镇群体范围界定的相关经验,从整体规模、中心城镇规模、一般城镇规模、区际联系度等4个方面选择多个指标,对长株潭城镇密集区范围进行了界定,将长沙市、株洲市、湘潭市、岳阳市、益阳市的17个县(市、区)列入长株潭城镇密集区范围,并在此基础上,针对密集区内存在的城镇分割发展与地方保护主义、产业同构与重复建设、行政牵制与无序竞争等问题,从行政区划的调整、规划体系的协调、经济空间的整合、基础设施网络的完善等4个方面提出了对长株潭城镇密集区进行有机整合的思路和观点。     

纤蛇纹石纳米管的水热合成与表征

采用水热法进行了纤维蛇纹石的合成研究,通过改变反应温度、反应体系pH值合成了多个样品,并利用X射线衍射仪、透射电子显微镜、扫描电子显微镜和红外光谱仪等手段对合成样品的物相、结构和形貌进行表征,分析表明在180℃～220℃、pH值为10.39～13的水热体系中均能够合成纤蛇纹石结构纤维;在220℃、pH值为13的条件下合成晶型最好、纤维最长的纤蛇纹石纳米管,其内径约6 nm～8 nm、外径约30 nm～35nm,长约200 nm～400 nm。     

基于GIS的城镇土地定级研究——以益阳市为例

城镇土地定级估价是城镇土地管理的基础性工作，有助于促进土地资源的高效配置和经济的快速发展。根据城镇土地定级因素所具有的空间特征和相关性，采用了地理信息系统（GIS）的技术和方法，运用空间数据库存贮、管理和操作各类与城镇土地定级有关的信息和数据，建立了一个城镇土地定级信息系统，并结合益阳城区土地定级的实践，对城镇土地定级的有关理论与方法进行研究。     

Determination of active units with different kinematic property and their activity pattern in North China based on the data from GPS remeasurements

Based on the high-accuracy data obtained from the GPS measurements carried out in 1992, 1995 and 1996, the isochronous active units with different kinematic property inside the North China area have been distinguished, 4 active units and 1 transition zone with distinct differential movement have been determined. They are Ordos-Yinshan unit, Yanshan unit, Shanxi-Hebei-Shandong (Jin-Ji-Lu) unit, Jiaodong-Liaoning-Shandong (Jiao-Liao-Lu) unit and Yanshan-Hebei (Yan-Ji) transition zone. The relative movements among the neighboring units in this period have been given. 1 The compressive movement between Ordos-Yinshan unit and Yanshan unit is not obvious with an amount of 0.4±1.3 mm/a. 2 Jin-Ji-Lu unit moves E40°S off the Ordos-Yinshan unit and the magnitude is 4.4±1.0 mm/a. 3 Relative to the Yan-Ji transition zone of differential movement, Yanshan unit shifts W38°N with a value of 2.4±1.3 mm/a and Jin-Ji-Lu unit moves eastward 35° by south with an amount of 2.3±0.9 mm/a. 4 Jin-Ji-Lu unit has a tensional left-lateral movement of 4.7±1.4 mm/a in the direction of E37°S relative to Yanshan unit. 5 Some area near Tanlu belt which is located in the southern part of Jin-Ji-Lu block has a southward movement 14° by west with a magnitude of 1.5±1.1 mm/a off the Jin-Ji-Lu unit. 6 Relative to Jin-Ji-Lu unit, Jiao-Liao-Lu unit has a trend of clockwise movement with a tensional right-lateral motion at the north end which neighbors Yanshan unit and a compressive motion at the south end. It should be noted that the errors given in the paper are obtained based on the divergence among the displacements of the sites in the unit, rather than the value calculated from the displacement error of the sites. The analyzed results indicate that: 1 Shanxi tectonic zone and Yan-Ji transition zone are the major tectonic active zones to show the frame and magnitude of interior relative movement in North China area, and others are the secondary tectonic active zones; 2 The complete horizontal deformation in the North China area is not homogeneous nor successive; 3 The kinetic model of North China area might be "mantle dragging plus boundary coupling". Foundation item: The National Key Basic Research Project Mechanism and Prediction of Continental Earthquakes (G1998040700).