We used the scheme of one settlement joint between the erection bay and the generator hall and no settlement joint among the four unit blocks, so that the integrity of the powerhouse was improved and the length dimension was reduced. And the fields such as the transformer field, GIS switching station, outgoing line frame platform, etc. were stratified layout;so that the height space was fully used. By these measures, the powerhouse layout was reasonable and compact, and the problem of diversion-type powerhouse layout on the narrow V-shaped river valley was effectively resolved. The civil engineering quantity of powerhouse and back slop was also reduced.%本工程采用“四机一缝”方案，提高厂房的整体性，减小了厂房的长度尺寸；同时对主变场、 GIS开关站及出线构架平台等场地进行分层布置，充分利用向上空间；使厂房布置合理紧凑，有效解决了引水式地面厂房在“V”型窄河谷的布置问题，减小了厂房和后边坡的土建工程量。
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