拱形洞室围岩内岩爆的计算机模拟与控制方法

借用GDA软件来模拟开挖周边的应力重分布，在此基础上，重点分析了拱形洞室的拱顶、拱肩、两侧及底角的应力分布与岩爆的关系。并提出如何依据dσ3/（σ1-σ3）大小与正负来分析和估计岩爆位置，因为应力差σ1-σ3可表征岩石的变形与静态破坏，而最小主应力增量dσ3的大不可表征抵抗这种变形与破坏的能力。结果是拱肩与底角会出现岩爆。分析结果得到了加拿大某矿山的岩爆发生位置实际资料所验证。最后，提出了如何利用预裂爆破方法使岩爆从拱肩迁移到洞室底角。     

The free jet as a means to improve water quality: Destratification and oxygen enrichment

Rivers, lakes, and coastal waters are chaotic systems — physical, chemical, and biological parameters influence their development. Each parameter itself is influenced by the system. Human interaction has led to fast eutrophication. Oxygen input and artificial mixing have been considered as tools to overcome the biggest problems of fish kills, algal blooms, and bad odour. The favoured technology for destratification and oxygen input so far is the bubble curtain. This technology has been applied successfully in several cases. But often, this technology could not be implemented because of high investment and operating costs.

Alternatively, the free jet is discussed as an efficient and low investment and operating cost technology. The free jet may transport oxygen-rich water from the surface down into the hypolimnion, thereby destratifying a water system. A free jet entrains on its way down even more oxygen rich and warm epilimnic water. This water will finally — if some mixing with the cold hypolimnic water occurs — be transferred to the metalimnion. The density differences will make this water travel long distances.

The energy input may be very low and the objective must not be to totally overturn a system. A jet started in early spring may help a lake to have a deep enough epilimnion, relatively large in volume in respect to the hypolimnion, and the normal wind will recirculate the water transferring enough oxygen to the deeper part, thus expanding the fish habitat and enabling benthic fauna. Literature also shows that the occurrence of massive algal blooms may be reduced.

The oxygen efficiency can be multifold compared to standard technologies.     

在MAPINFO中实现地质勘查科研成果管理

主要介绍了在"科研项目成果管理数据库系统"项目中MAPBASIC编程方法,使有关地理信息在GIS软件中显示、应用,达到项目管理图文并茂的效果.     

地震活动的三维动画演示系统

详细介绍了辽宁数字遥测地震台网利用C语言、3DSMAX软件开发的地震活动的三维动画演示系统。     

短水准绘图软件的研制

详细介绍了地震台短水准绘图软件的开发过程及其特点和应用效果。     

勘探坑道施工技术辅助设计软件的开发

针对地质勘探坑道掘进施工技术的特点，论述了勘探坑道掘进施工技术辅助设计软件的系统需求分析、功能模块组成以及软件的整体设计思路，同时阐述了目前软件的开发过程和现状，最后对软件的应用前景进行了预测。     

RSMAP遥感图像处理软件应用

遥感技术在区域地质调查领域已经有着越来越广泛地应用，遥感图像处理的好坏直接影响到遥感在区调中的应用效果。本文以一个应用实例对RSMAP遥感图像处理软件作了一个全面的测试。     

使用Ghost自动备份和恢复操作系统

当计算机出现非法操作、死机、运行缓慢、病毒或者操作的失误,导致硬盘上的数据丢失和系统崩溃如此类问题时,采用Ghost软件自动备份和恢复操作系统。     

2002年12月下旬宁夏持续低温天气成因分析

本文主要通过发生在山西境内的一次强对流天气过程,简单介绍2003年3月份移植的敏视达气象应用软件包在强对流天气方面的应用。     

对象构件化多层分布式GIS体系结构模型研究

分析了目前GIS工程应用开发中常用的软件系统体系结构 ,提出了一种对象构件化的多层分布式GIS体系结构 ,并对其进行了深入分析