共查询到20条相似文献，搜索用时 31 毫秒
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高精度、高分辨率三维地震技术在我国多数矿区,不仅可以控制落差大于等于5m的断层,而且对大于1/2波长的地质异常体也具有较高精度的识别能力。以淮北矿区某煤矿为例,应用叠前时间偏移二次处理技术、地震属性技术及多属性聚类分析等方法,获得了研究区令人鼓舞的从未有过的对开采有重要工程价值的地质成果,证实了所用技术的先进性以及三维地震资料二次处理解释的必要性。 相似文献
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An automatic generation method of geological cross-sections in dredging engineering based on 3D geological solid models is presented.The 3D geological models are built applying the non-uniform rational B-splines(NURBS) technique,and a 2D profile can be calculated and generated automatically through Boolean operation to meet the demands of dredging projects.Moreover,an automatic marking method for geological attributes is put forward based on database technology,and the geological attributes include the profile name,scale,horizontal and vertical relative coordinates,geological lithology,and 2D standard lithology legend.At the same time,the automatic marking method can also provide an interactive mode for geological engineers to edit and modify the profile in the modeling system.Practical engineering applications show that the automatic generation method is a simple,flexible,fast and precise visual graphics rendering process that can create 2D standard profiles automatically and efficiently.This method also provides a convenient support tool for geological engineering digital analysis. 相似文献
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为了降低采集过程中各种噪声干扰以及老数据的磁带掉粉等因素造成的地震数据异常,处理与地层性质无关的抖动和毛刺干扰.采用时序RBF神经网络在线重构的方法.结果表明：在保留实际信息的前提下能有效的去除地震数据中的异常,使地震相与实际的地质体更加贴近.该方法具有很好的灵活性、及时性和低耗性,重构后的数据更加有利于后期解释工作和油气藏的描述. 相似文献
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Due to the complex nature of multi-source geological data, it is difficult to rebuild every geological struc-ture through a single 3D modeling method. The multi-source data interpretation method put forward in this analysis is based on a database-driven pattern and focuses on the discrete and irregular features of geological data. The geological data from a variety of sources covering a range of accuracy, resolution, quantity and quality are classified and inte-grated according to their reliability and consistency for 3D modeling. The new interpolation-approximation fitting construction algorithm of geological surfaces with the non-uniform rational B-spline （NURBS） technique is then pre-sented. The NURBS technique can retain the balance among the requirements for accuracy, surface continuity and data storage of geological structures. Finally, four alternative 3D modeling approaches are demonstrated with reference to some examples, which are selected according to the data quantity and accuracy specification. The proposed approaches offer flexible modeling patterns for different practical engineering demands. 相似文献
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袁辉亚 《商丘职业技术学院学报》2007,6(5):56-58
在山区地形复杂、沟壑纵横条件下，采用三维高分辨地震勘探技术，查明了曹窑东井深部采区构造分布情况，为优化深部采区设计，合理布置采掘工程，提供了较为明确的地质资料． 相似文献
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XING Yu-zhong FAN Tai-liang ZHENG Li-hui 《浙江大学学报(A卷英文版)》2006,7(11):1904-1910
INTRODUCTION Several fields in Liaohe Basin are host to frac- tured hydrocarbon oil reservoir, fractures are consid- ered to influence productivity significantly in these reservoirs, which not only form a large part of the overall porosity, but also are responsible for the po- tential reservoir volume. More importantly, the frac- ture system facilitates permeability and flow. Ce- mented and closed fractures act as barriers to flow, whereas open fractures intersected by the wellbore may in… 相似文献
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It is difficult to analyze the inter-relationship for the construction layout of a reservoir project scientifically and intuitively.According to the characteristics of broad field and huge information,the modeling methods of digital terrain and solid model as well as the techniques of texture mapping and scene navigation are adopted.The simulation system is developed by C program language,which includes the functions of the interactive navigation of 3D scene,the visual inquiry of project digital model information,the storage and management of project information.A certain reservoir is taken as a case.The 3D visual analysis for the construction layout and engineering information are obtained.The proposed system is of great advantages in dealing with large amount of information and the method provides a theoretical basis and technical support for the construction layout of a reservoir project. 相似文献
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目前采用地震属性预测储层参数的方法层出不穷,但是这些方法多数是基于单变量、线性的机器学习算法,在已知样本较少的情况下精度得不到保证。为了获取高精度的储层参数,指导油气的勘探开发,迫切需要寻求一种新的方法最大限度地挖掘地震地质信息。支持向量机是以结构风险最小化原则为核心的新型机器学习算法,与传统的机器学习算法相比,其具有基于多变量、小样本、非线性和预测精度高的优点。以渤海湾SZ-361油田Ⅰ油组顶部储层参数预测为例,采用支持向量机算法,得到了较高精度的储层预测结果,证实了支持向量机算法可以应用于油气勘探领域。 相似文献
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何立新 《河北能源职业技术学院学报》2011,11(3):71-72
工作面补充地质勘探是保障高产高效的重要手段,根据单侯矿6103N综采工作面的生产实际．阐述了如何利用三维地震、瞬变电磁、坑透、电法、钻探、巷探等综合手段,探明地质构造,保证了综采工作面的高产高效,取得的经验及要吸取的教训。 相似文献
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陈朋 《湖南第一师范学报》2012,12(4):112-116
提出一种基于Voronoi图的插值算法,通过采用邻近点查询法找出待插值节点的相关邻近节点,再根据邻近节点构建局部Delaunay三角网,并据此形成局部Voronoi图,将待插值点看成一个虚拟节点更新局部Voronoi图;依据各邻居节点的Voronoi面积和观测值计算出待插值点的预测数据;最后进行模拟实验,验证算法结果。 相似文献
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基于地震反射波法超前预测系统的原理及主要技术手段,以栋梁坡隧道工程为实例,针对隧道复杂的地质条件,施工过程中将超前地质预报和地质素描调查相结合,先对隧道全段范围内地形、地层岩性等进行全面核查,然后结合核查结果运用地震反射波法预报掌子面前方的节理裂隙发育情况,围岩完整性等地质信息。开挖后验证情况与预测结果基本一致,为后续预防突水塌方等隧道地质灾害事故的发生提供数据支撑,有效保证栋梁坡隧道的施工安全。 相似文献
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爆破激发的地震波在围岩中传播时,部分地震波会被反射。隧道前方地震预报法用TSP203 Plus接收器将反射的地震波进行收集并转化为数据,利用TSPwin软件对数据进行处理,获得前方地层的地质力学参数,评估隧道掌子面前方围岩与地层情况。该方法具有预报距离远、精度高,对施工干扰小等优点。 相似文献
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国内外油气田的开发实践表明,水平井压裂可以压穿多套储层,增加单井控制储量,提高单井产量。研究表明,水平井产能随裂缝条数、长度和导流能力增加而增加,且不同油藏状况下存在最优值。减少井筒根部和端部的裂缝间距可以增加水平井产能。在水平井压裂方案设计时,应根据储层地质情况和水平井压裂施工工艺,并充分考虑裂缝参数对水平井产能的影响来进行优化设计。 相似文献
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在对水库库区地形地貌、地层岩性、水文地质条件及岩溶发育特征等分析的基础上,对水库各主要可能渗漏地段进行了初步渗漏量估算,并提出了建议处理措施,为工程设计提供了合理的依据。 相似文献
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基于CATIA的飞机结构试验加载杠杆系统参数化建模方法 总被引：2，自引：0，他引：2
介绍了基于Automation技术的加载杠杆系统参数化建模方法,使用Visual Basic开发了相应可视化建模软件。应用实例表明,软件界面友好,操作简单,只需输入试验加载点、杠杆布置等基本参数和数据文件,即可完成杠杆系统的参数化建模,从而快速地实现加载杠杆系统的参数化设计与方案展示。 相似文献
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基于FLAC3D的滑坡稳定性数值模拟分析 总被引：1，自引：0，他引：1
在介绍FLAC3D基本特点的基础上,利用FLAC3D软件对万州安乐寺滑坡在水库不同蓄水位条件下的滑坡稳定性进行了流-固耦合模拟分析研究.通过建立数值计算模型和选择合理的参数,模拟得出滑坡体的塑性区分布特征和剪应变增量集中带的发展趋势.运用三维耦合分析,对水库不同蓄水水位条件下的滑坡稳定性做出评价,为滑坡的治理提供了必要的理论依据. 相似文献
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Prediction of channel dredging volume is critical for project cost estimation. However, many proposed approximate methods are not accurate. This paper presents a novel numerical method to accurately calculate the dredg- ing volume using a 3D stratum model (DSM) and a channel surface model. First, the 3D DSM is constructed rapidly yet accurately from non-uniform rational B-splines (NURBS) surfaces through Boolean operation between a physical terrain model and a stratum surfaces model. Then, a parametric channel surface model is built from cross-section data and a channel center line using code implemented in the VC++ programming language. Finally, the volumes of different types of physical stratums can be calculated automatically and hierarchically to determine the dredging volume. Practical application shows that the DSM method is more precise and faster compared to the section method, and that the implementation of the developed software provides an interactive graphical user interface and visual presentation. 相似文献
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阐述了ArcGIS作为一种综合性处理工具在三维石油数据集中的应用。同时,在石油工业中三维可视化和分析工具的应用非常广泛,通过这些工具得到的综合数据和某个组织所拥有的其他空间数据是很难直接应用的。利用地理数据库的叠置单元块特性,复杂的三维特性能够存储在地理数据库中,并且可以通过三维立体方式在ArcGIS环境下达到可视化的效果。这就实现了通过传统通用仪器资源获得来自于地质、工程或者勘测源的标准空间数据的复杂三维对象的综合化。 相似文献