共查询到20条相似文献，搜索用时 15 毫秒
1.
With the using of new full 3 - D interpretative technology, the carefully interpretation of the micro - amplitude structures and faults by the reprocessed 3 -D seismic data in IES (Interactive Exploration System) interpretative system of Sun workstation is obtained. Because of the application of the well - advanced predictive technique for reservoir lithological changes, the predictive accuracy rate of drilling for 31 wells drilled in 1996 achieved 100 % and the economic and social benefits are desirable. 相似文献
2.
GUO Qingxia 《东北亚地学研究》2002,(2)
ＩｎｔｒｏｄｕｃｔｉｏｎＸｕｊｉａｗｅｉｚｉＢａｘｉｎ(ＸＢ)ｏｉｌｆｉｅｌｄｉｓｓｉｔｕａｔｅｄｉｎｔｈｅｓｏｕｔｈｏｆＤａｑｉｎｇｏｉｌｆｉｅｌｄ .Ｔｈｅｐａｙｚｏｎｅ ,Ｐｕｔａｏｈｕａｒｅ ｓｅｒｖｏｉｒ ,ｗｈｉｃｈｉｓｗｉｔｈｓａｎｄ -ｓｈａｌｅｓｅ 相似文献
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孙传文 《中国海洋湖沼学报》1997,15(1):7-18
IwrRODUcrIONNearsurface2-Dand3-DinhomogeneousdistortionsinMTdatamakeitdimculttointerpretMTdataevenwhentheregionalorbasinstruCturescanbetreatalas1-dfornsionalnyohmann,l975,Weide1t,l975,Wannamakeretal.,l984,LaTormcaetal.,l986,Zhang,l987,TorresWhrdinetal.,l992).Inthelasttwentyyears,2-Dand3-DmodelinghavebeenaanmPlishedbyusingnumricalmethods.Afteranalyringthesefor-wardmodelingresultS,wenowdeariyunderstandthemaorphySica1meCanisrnsasultingfromthesedistortionsofnear6urfaceinhomogeneities(Pa… 相似文献
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OpenGL 3维管线衔接处绘制的研究 总被引：2，自引：0，他引：2
3维管线建模与可视化是构建数字城市及实现管线管理信息系统中不可缺少的重要组成部分.本文介绍了利用初始点集构造管线衔接处3维模型的基本步骤,着重对OpenGL 3维管线复杂衔接处3维建模的关键问题进行了探讨.最后用实验对本文提出的理论进行了验证.实验表明,利用简单3维几何变换及基准面旋转的方法可以高效便捷地实现各种复杂管线衔接处的3维可视化,并在实际运用中取得了较好的效果. 相似文献
5.
房地不动产具备天然的立体特性,在三维空间中对其进行准确刻画是当前城市地上地下综合开发的关键问题,国内外学者已经提出了各类房地不动产数据模型,旨在解决房地不动产的管理与权利空间的三维表达问题。分析国内外学者的研究成果发现,国外学者提出的房地不动产数据模型多以地籍为核心展开,不能完全适用于我国的房地不动产管理;而国内学者虽兼顾了地籍和房产,但忽略了建筑实体、建筑空间与产权空间的关系,无法将房地不动产信息与建筑物信息模型（Building Information Modeling,BIM）整合,不利于房地不动产的精细化管理。针对以上问题,本文提出了基于IFC（Industry Foundation Classes）标准扩展的房地一体化三维不动产数据模型,并通过实例验证了该模型在我国房地不动产管理上是可行的。研究结果表明,本文提出的模型正确表达了各类建筑对象和产权对象,既可以支持业务相关的关联关系的查询,也支持GIS常见拓扑关系的查询和表达,该模型除了能表达符合我国体制的房地不动产对象外,还关联了BIM模型中的建筑构件、建筑空间, 为城市建设与运维管理提供技术模型支持。 相似文献
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《山地科学学报》2015,(5)
Using a combination of close-range photogrammetry and three-dimensional(3-D) limit equilibrium theory, a determination method for the shear strength parameters of rock-soil mixture is presented. A close-range photogrammetry method is used for measurement of the 3-D terrain of the experimental target. Auto CAD Lisp and EXCEL VBA are used to perform 3-D limit equilibrium analysis of the stability of sliding mass and perform backanalysis of shear strength parameters. The presented method was used to determine the shear strength parameters of rock-soil mixtures at the Liyuan Hydropower Station. The 3-D terrain of sliding surface could be measured notably well using of closerange photogrammetry. The computed results reveal that the cohesion and friction angle of rock-soil mixtures were 3.15 k Pa and 29.88o for test A, respectively, and 4.43 k Pa and 28.30o for test B, respectively, within the range of shear strength parameters, as determined by field and laboratory tests. The computation of shear strength parameters is influenced by the mesh grid number, especially the cohesion of the rock-soil mixture. The application of close-range photogrammetry can reduce the siteworks and improve the computational efficiency and accuracy. 相似文献
9.
A 3-D morphological approach on spatial form and cultural identity of ethnic mountain settlements: Case from Guizhou,China 总被引：1，自引：0，他引：1
Ethnic mountain settlements are living heritage of varied vernacular cultures. The preservation of both the built form and the intangible socio-cultural associations with them are global concern in process of urbanization, and in the notion of sustainable development. However, there is a lack of multi-dimensional and cross-cultural quantitative research in settlement morphology, making it difficult to guide practice effectively. Therefore, this study focuses on exploring an automatic or semi-automatic quantification and classification method for the morphological identity of ethnic mountain settlements. We introduce and combine 3-D morphological indicators with existing 2-D indicators to build and test three different sets of indication systems for semi-automatic classification for the settlements' ethnic attribute basing on spatial morphology. Taking the Miao, Dong, and Tunpu(Han) ethnic settlements in Guizhou province, southwest China as research samples, we applied factor analysis and hierarchical clustering methods to compare the classification accuracy under the three systems using data from topographic map, field investigation map, satellite imageries, and ethnography or local chronicle. The results showed that, the 3-D indication system has succeeded in semi-automatic quantification and classification of settlement morphology and ethnic identity by greatly increasing the classification accuracy to 96.30%, which is a huge improvement compared with the basic 2-D indication system(42.59%) and the advanced 2-D indication system(61.11%). The settlement samples are further divided into two sub-types with significant morphological differences in each major ethnic category under the 3-D indication system. We then discussed the potential improvement and future large-scale application of this method with the help of machine learning and other smart techniques. We hope to provide a comprehensive quantitative perspective and a more scientific reference for the future preservation and sustainable development of the massive and diverse vernacular heritages across the world. 相似文献
10.
3维虚拟地球技术发展与应用 总被引：1，自引：0，他引：1
随着遥感技术、计算机技术和网络技术的发展,在应用需求牵引下,以GoogleEarth为代表的3维虚拟地球得到迅速发展和应用.对此,主要讨论了几个主要3维虚拟地球系统及特点.结合地理信息服务技术的发展趋势,介绍了自主研制的开放式虚拟地球集成共享平台GeoGlobe及其应用特点,阐述了虚拟地球技术与应用的发展趋势. 相似文献
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应用微动台阵法在江汉平原和长江大堤开展应用实验。结果表明,空间自相关法比频率-波数法结果更为稳定;通过变换台阵的尺寸可以探测浅至数米深至数百米的地下结构信息;利用台阵在空间上的平移观测可获取地下二维及三维的结构信息。 相似文献
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A stochastic two-dimensional Fornasini-Marchesini's Model Ⅱ (2-D FMM Ⅱ) with multiplicative noise is given,and a filtering algorithm for this model, which is optimal in the sense of linear minimum-variance, is developed. The stochastic 2-D FMM Ⅱ with multiplicative noise can be reduced to a 1-D model, and the proposed optimal filtering algorithm for the stochastic 2-D FMM Ⅱ with multiplicative noise is obtained by using the state estimation theory of 1-D systems. An example is given to illustrate the validity of this algorithm. 相似文献
15.
CHUDongsheng LIANGMeng SHIXin ZHANGLing 《中国海洋大学学报(英文版)》2004,3(1):106-110
1 Introduction Inrecentyearstherehasbeengrowingresearchin terestinthetwo dimensional (2 D )systemtheory .The 2 Dsystemsmayfindapplicationsinareassuchasmarineseismicdataprocessingandimageprocessing .Althoughmoreandmorevaluableresultshavebeengained ,mos… 相似文献
16.
������С���˷�������ά����ת���е�Ӧ�� 总被引：9，自引：4，他引：5
????о???????С???????????С????????????С????????????????е???????????????????????????????У??????????????????μ?????????????????????????????????С???????????????е????????A??????????b??????????????????????????????????????????LS????????????????С?????????????????????????????????? 相似文献
17.
The classical 1-D vertical advection-diffusion model was improved in this work.The main advantages of the improved model over the previous one are:1) The applicable condition of the 1-D model is made clear in the improved model,in that it is substantively applicable only to a vertical domain on which two end-member water masses are mixing.2) The substitution of parameter f(z) in the equation of the classical 1-D model with end-member fraction f1^z makes the model more precisely and easily solved.3) All the terms in the improved model equation have specific physical meanings,which makes the model easily understood.Practical application of the improved model to predict the vertical profiles of dissovled oxygen and micronutrients in abyssal ocean water of the North Pacific proved that the improvement of the 1-D advection-diffusion model is successful and practicable. 相似文献
18.
王西文 《地球科学与环境学报》1989,(1)
B K Bhattachryya(1975)推导的求磁性体质心的矩谱公式理论严谨,计算速度快,并且有不需要预先知道磁性体磁化率的特点。在该公式的基础上,本文对求质心的各种影响因素作了细致讨论,推导出了提高求解质心精度的改正公式。 相似文献
19.
This paper discusses numerical methods for modelling cathodic protation (CP) using Boundary ElementMethods(BEM) for CP design analysis in comparision with the traditional methods and presentsseveral mathematical models (for CP design in 3-D infinite area) solvable by using BEM withmicrocomputer. 相似文献
20.
The practice has proved that it is an economic and effective method to investigate placer gold deposit by using multi-level information sources of remote sensing and multi-variate analysis methods, especially for the area with a sparse population and difficult condition like the Da Hinggan Mountains, China.The information sources used in our work includes Landsat TM, aerial infrared photography and their mosaic image maps and enlarged photos with different scales. According to statistic data, in the study area the gold-bearing rocks are mainly granite, alaskite, granodiorite and some old metamorphic rocks. On gold-bearing geological structures, the fault zones in the four directions (NE, NNE, NW and EW) are obvious, in which NNE and EW are the most key fault zones. On fluvial geomorphology the flow courses stored placer are in the tributaries of the 4th and 5th levels, especially in straight or slight curve reaches. On the basis of analysis the interpretative signs were set up, and the interpretative wo 相似文献