文章简要介绍了斜井全断面变径滑模结构、工作原理和主要技术性能指标。针对三峡工程永久船闸地下输水系统斜井具有数量多、长度短、体型复杂、边墙高度逐渐变化等特点。混凝土施工采用全断面变径滑模新工艺，斜井直段一次浇筑成型，洞身高度变化在滑升过程中自动完成，并收到显著的经济效益和社会效益。

The construction, principle and main technical performance of the full-face variable diameter slipforms of inclined shafts are concisely introduced. In underground water conveyance system for Three Gorges Project's permanent lock, the inclined shafts are large in number, short in length, complex in structure, changeable in height and so on. Some new techniques of the full-face variable diameter slipforms are taken in concrete construction. The inclined shafts are accomplished with single-pass pouring practice and the change of height is finished automatically with slipping. Its economic and social effect is obvious.