三峡工程一期围堰施工技术综述

三峡工程一期围堰全长２６４９ｍ，工程量大，工期紧。在施工中从技术角度选取了风险决策抢填试验段；优选石料料场并应用硐室爆破技术开采石料；改进围堰防渗结构和施工技术；优化改进围堰施工方案和细部结构，使一期土石围堰工程提前１０个月顺利建成。一期围堰经过３年运行和洪水考验，工程质量良好，为三峡工程大江截流创造了良好条件。     

三峡工程环境可持续性简评

从生态环境的观点看，最好在大坝应以最小的环境代价换取最大的社会、经济效益，并尽可能地改善流域生态环境，三峡工程环境可持续性优良与否，可一类指数得到总体判断。     

Parallel computations of 3D flows in resin transfer molding

In this work, fast 3D non-isothermal mold flow simulation programs that take advantage of the new generation parallel supercomputers such as Cray C90 and TMC CM-5 are developed and evaluated. The codes are based on the FE/CV formulations and utilize “overfill and redistribute scheme” to enhance the flow front movement. They rely on recently developed fast iterative solvers: the generalized minimal residual solver and the quasi minimal residual solver. In the examples, the performance of the iterative solvers and the overfill and redistribute scheme is evaluated, and a 3D simulation using 104,000 HEXA8 element mesh is performed.     

学习大别山经验 以大农业为基础 搞好三峡库区农村移民工作

本文结合大别山区湖北罗田、英山和安徽金寨三县的经验，进一步阐明了开发性移民方针的正确性和坚定走以大农业为基础安置农村移民的路子，以及如何立足于本地资源建立和发展区域性支柱产业等问题     

FRAME3D: Interactive,three-dimensional display of earthquake hypocenters

This paper describes a method for vector-graphics, three-dimensional display of point locations specified by latitude, longitude, and depth and the application of this method to the display of earthquake hypocenters. A three-dimensional image of earthquake hypocenters seems to be a powerful tool in the tectonic interpretation of seismicity. For example, the zone of earthquakes between a subducting and overriding plate, the “Benioff zone”, may differ significantly from a simple inclined plane. Such Benioff zone morphology would be difficult to analyze using other display techniques, yet it may be important in understanding the tectonics. Other applications of this method, such as display of interpreted, digitized seismic lines, crustal models, well-log picks and tie lines, are possible with minor modifications to the given program.     

核电站模拟器在三里岛事件后的新要求和新发展

本文介绍了美国三里岛事件后核电站控制室设备的改进对核电站模拟器的新要求、模拟器本身在三里岛事件中所暴露的不足及随后模拟软件的新发展,也简略地介绍了目前模拟器在世界范围的发展动向。     

长江三峡工程移民的关键技术问题

三峡工程总工期１７年，最终动迁人口１２０万。三峡工程移民社会问题敏感、政策性强、技术经济问题复杂。笔者历经长江三峡水库移民调查、论证、可行性研究、投资包干、限额规划等阶段，指出了移民环境容量的核心问题是解决农村移民的生产安置问题，分别论述了移民规划设计阶段划分、移民补偿与发展、投资包干、限额规划、山城建设、地质勘探等关键技术问题。     

三维空间广义旋转方程与立体显示

本文描述三维图象(或数据)显示中绕图象中心旋转360°,倾斜90°的三维空间坐标变换广义旋转方程。给出了基于这一方程出发设计的立体显示坐标变换电路。     

CAD and Management of Construction Projects

The increasing interest in computer‐aided design (CAD) has prompted research that is aimed at identifying the opportunities for construction managers and building contractors. It has been found that the use of CAD systems in the U.K. is mainly confined to the production of detailed drawings. Indeed, most of the systems used are 2‐D drafting tools and incapable of supporting the integration of even modest amounts of nongraphical (construction) data. On the other hand, many 3‐D modeling systems have the potential to integrate construction data, although they appear to be almost ignored. The use of 3‐D modeling systems is considered to be the most suitable vehicle for successfully integrating these data. However, this is likely to necessitate the introduction of separate databases, preferably of the relational type. The use of 3‐D modeling systems in assessing the construction implications of outline designs also presents interesting possibilities and is discussed.     

内燃机排气消声器性能的三维有限元计算及分析

首先用三维有限元法计算出消声器的四端子参数，然后利用所求得的四端子参数预估消声器的性能，克服了由于高次波影响，一维理论计算公式在高频区计算不准确的缺陷，也克服了二维有限元法不适用于非对称结构消声器的缺陷，取得了计算结果、理论分析与试验值吻合的良好效果。在此基础上，对扩张式消声器最高有效上限频率及扩张室长度对消声器性能的影响进行了讨论，其结论对消声器设计有一定的参考价值。