primary planning

According to several types of tower for 500 kV transmission conductors and 1 000 kV EHV electrical distance the author has given a primary planning for suspension transposition tower,small frame strained transposition tower,self-support transposition tower,door-shaped transposition tower and discrete typ.

根据500 kV输电线路几种导线换位塔型的运行经验和1 000 kV特高压的电气距离,初步规划出直线换位塔、小构架耐张换位塔、自身式换位塔、门型换位塔和分立式换位塔,并进行了技术经济比较。

The application of physical prospecting method in primary design of building project;

物探方法在土建项目初步设计中的应用

In thispaper,the roles and functions of the Soviet Union from selecting the site of factory, geological surveyof plant area, experiment for pumping up water, ore experiment, coking plant experiment, initial designto the building of construction base during the preparation and primary design to the building of con-structi.

文章从选择厂址、厂区工程地质勘察、扬水试验、矿山勘探、矿石试验、炼焦试验、初步设计和施工基地工程建设等诸方面,综述苏联在包头钢铁基地筹建和初步设计时期所起的作用,展示其冶金技术向中国转移的过程。

The article proves the rationality of the adjustment of scheme at the stage detail design compared with the scheme at the primary design stage from the concept of natural ecological protection,construction convenience and safety,and security,maintenance and reparation in operation process,in order to offer a reference for bridge design engineering.

从交通部自然生态保护理念、施工方便、安全以及运营过程中的安全、养护、维修等各方面论证了施工图设计阶段较初步设计阶段方案进行了调整是合理的,可供桥梁设计工程参考借鉴。