Numerical Calculation of Equivalent Cell Permeability Tensors for General Quadrilateral Control Volumes

A new method for upscaling fine scale permeability fields to general quadrilateral-shaped coarse cells is presented. The procedure, referred to as the conforming scale up method, applies a triangle-based finite element technique, capable of accurately resolving both the coarse cell geometry and the subgrid heterogeneity, to the solution of the local fine scale problem. An appropriate averaging of this solution provides the equivalent permeability tensor for the coarse scale quadrilateral cell. The general level of accuracy of the technique is demonstrated through application to a number of flow problems. The real strength of the conforming scale up method is demonstrated when the method is applied in conjunction with a flow-based gridding technique. In this case, the approach is shown to provide results that are significantly more accurate than those obtained using standard techniques.     

桩土接触面单元参数分析

桩的抗拔特性与接触面的特性密切相关，正确选定接触面的力学参数对于分析桩的抗拔机理有重要意义。根据桩土接触面点面接触模型和库仑摩擦变形原理，在10组土－结构（钢、混凝土）剪切摩擦试验分析的基础上，对桩土接触面摩擦参数的取值问题进行了研究，得到了一些结论，对于桩土接触面力学参数正确取值有一定的参考价值。     

GEOCHEMICAL EFFECTS OF MAJOR ELEMENTS DURING FLUID-ROCKS INTERACTION IN MARINWOBO FAULT IN THE SOUTH MARGIN AREAS OF ALTAI MOUNTAINS

There are four types of metamorphic rocks in the Marinwobo fault, i. e, cataclasite, mylonite,mictosite and migmatitic granite, and the formation of these rocks is due to the progressive metamorphism of the pyroclastics. The fluids play a very important role in the metamorphic process of these rocks in the Marinwobo fault, the most important feature is that the fluids not only result in the migration of the major elements of the deformation rocks, but also result in the volume loss of the deformation rocks in the deformation process. Thus the migration laws of the major elements in different stages of the progressive metamorphic process are discussed according to mass balance equations. Finally, the quantitative analysis of the mass loss and volume loss of the different rocks the in Marinwobo fault is discussed in this paper.     

四川省房屋建筑易损性研究

研究房屋建筑易损性特征是防震减灾工作必不可少的环节之一，本文通过对多年工作的系统总结，得出四川省不同地区的房屋建筑易损性矩阵，全省房屋建筑抗震性能总体水平不高，这是造成地震灾害加重的主要原因之一，随着经济发展实力的提高，适当提高全省房屋建筑抗震设防水平可大大减轻特别是中强地震所造成的经济损失。     

漾濞地震震源位置分析

采用一致的地震震相和台网布局，应用昆明数字地震台网资料，对2002年月1月4日－1月7日的漾濞地震及序列作进一步核定，得出了更精确的地震震源位置，并作出三维空间图。     

数字化射线照相技术对轻物质的判断

本文介绍了数字化射线照相技术对轻物质进行判断的方法。经实践证明，该方法是合理和有效的，可大大增强对轻物质的识别能力，是一种非常可行的识别技术。     

2001年四川省雅江-康定6.0级地震烈度考察及发震构造背景雏议

2001年2月23日四川省发生的6.0级地震，其宏观震中位于雅江县与康定县之间的高山峡谷地带．极震区烈度可达Ⅷ 度，Ⅷ 度区、Ⅶ 度区和Ⅵ 度区面积分别为180km2，1472 km2和3998 km2，等震线分布总体形态呈椭圆形，长轴近南北向．震区建筑物普遍受损，极震区山地灾害较为严重．初步分析认为，此次地震的发生与理塘断裂和玉农希断裂的长期活动有关，主干断裂活动造成的地壳应力调整和集中，最终在块体内部的次级断裂上释放而产生地震．      

企业地震预警系统应用研究

在充分调研国外地震预警系统现状的基础上，进行了地震预警系统的研究，研制了相应的数据分析软件。采用数字化观测技术、GIS技术等高新技术，在中国石油天然气股份有限公司大连分公司建立了地震预警试验系统，并将该地震预警系统与地震应急系统相连，为今后开展类似工作积累了经验。     

Early Yanshanian post-orogenic granitoids in the Nanling region Petrological constraints and geodynamic settings

Early Yanshanian magmatic suites predominate absolutely in the Nanling granite belt. They consist mainly of monzogranite and K-feldspar granite. There occur associations of early Yanshanian A-type granitoids (176 Ma-178 Ma) and bimodal volcanic rocks (158 Ma-179 Ma) in southern Jiangxi and southwestern Fujian in the eastern sector of the granite belt and early Yanshanian basalts (177 Ma-178 Ma) in southern Hunan in the central sector of the belt. Both the acid end-member rhyolite in the bimodal volcanic rock association and A-type granitoids in southern Jiangxi have the geochemical characteristics of intraplate granitic rocks and the basic end-member basalt of the association is intraplate tholeiite, while the basaltic rocks in southern Hunan include not only intraplate tholeiite but also intraplate alkali basalt. Therefore the early Yanshanian magmatic suites in the Nanling region are undoubtedly typical post-orogenic rock associations. Post-orogenic suites mark the end of a post-collision or late orogenic event and the initiation of Pangaea break-up, indicating that a new orogenic Wilson cycle is about to start. Therefore it may be considered that the early Yanshanian geodynamic settings in the Nanling region should be related to post-orogenic continental break-up after the Indosinian orogeny and the break-up did not begin in the Cretaceous.     

基于Exchange Server 5.0前兆网络邮件系统的建立

各省地震局 95 - 0 1- 0 2地震信息网络项目采用的邮件系统是基于 IRIX 6 .5操作系统的Netscape Mail Server2 .0 ,由于其应用与管理有局限性 ,笔者进行了基于 NT系统的 ExchangeServer5 .0邮件系统的应用研究 ,详细论述了基于 Exchange Server5 .0的黑龙江省地震前兆信息网络邮件系统的安装及配置过程 ,得出该网络邮件系统有管理方便、功能强大的结论