三峡二期工程大坝混凝土浇筑过程模拟系统

三峡二期大坝混凝土施工模拟系统采用先进的计算机技术，结合二期工程实际情况和技术要求，并融入以往混凝土施工经验，对三峡二期大坝混凝土施工过程进行了模拟。该模拟系统可对混凝土的浇筑过程进行计算和记录，对大坝建设任何时段的形象进度，浇筑量等进行快速查询。

Simulation system of dam concrete pouring process of Three Gorges Project in the second stage

The simulation system for dam concrete construction of the Three Gorges Project in the second stage is designed to simulate the whole process of the dam concrete construction of the Three Gorges Project in the second stage. It adopts the advanced computer technology and also combines the actual conditions and technical requirements of the second stage project and the accumulated concrete construction experience. This system can calculate and record during the concrete pouring and can make quick inquiry about the image progress and pouring volume of dam at any time interval. It also can dynamically display the construction process in two or three dimensional way. It is expected that this system can enhance efficiency of over thousand times. It has significant importance on concrete construction directions and decisions. essel Oil spill Remote sensing Surveillance Environmental managementGESS Multi point Support Pattern of a High Precision, Lightweight Rectangular Mirror$$$$ WU Qing Wen (School of Mechatronic, Harbin Inst. of Tech., Harbin 150001)TAO Jia Sheng, SONG Zhao Hui (Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Changchun 130022 )Abstract The devolopment of lightweight, high resolution, visible light space remoter with wide view field has been treated as a key project to the space optics researchers. The multi point support technique of a high precision, rectangular mirror is investigated. The research method is stated emphatically. Key Words:Rectangular mirror, Support, Surface figure