10 最近の大規模水力発電所建築について

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  • 10) BUILDING OF MAJOR HYDROELECTRIC POWER HOUSES IN RECENT YEARS
  • 最近の大規模水力発電所建築について
  • サイキン ノ ダイキボ スイリョク ハツデンショ ケンチク ニ ツイテ

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This paper deals with the design and construction of the hydroelectric power house buildings adopted for recent major projects, namely, TAGOKURA, SAKUMA, OKUTADAMI and MIBORO, which have been carried out by the Electric power Development Co. during the past 10 years. A description of these follows in three sections: (1) TAGOKURA power station is one of the most tptyical storage plants, and its power house has been placed immedeately below the dam. The power house design, therefore, whether in planning or construction, was intimately associated with the actual construction of the dam. Careful consultation of the civil, mechanical, electrical and architectural engineers and the drawing up of a program was necessary allowing for weather, including such phenomena as heavy snowfalls, floods and, last but not least, reasonable longterm economy. In this section what has been done on TAGOKURA power house design and construction from project stage until completion, is discussed. (2) SAKUMA switching station has been placed alongside the power house on its roof slad to economize valuable ground area. This arrangement, instead of conventional lattice members, reguired the plain framing member whose H shaped cross-section was small compared with the structure as a whole. And then, a specially designed joint has allowed rigid connection by means of a pre-stressed tension bolt. (3) OKUTADAMI & MIBORO power houses have been built deep underground. To make them just as comfortable as surface stations, careful consideration had to be given to the design of the ventilating system. In this section the factors of basic design conditions such as surrounding rock temperature and other considerations peculiar to the underground stractures, are described. In summary, the building of power houses can only be accomplished by the close co-operation of engineers with the architect or architectural engineer advising towars a harmonious overall design and layout of the facilities. This paper is an approach to the ideas behind today's power house.

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