三峡永久船闸建筑物变形特性分析

Deformation Analysis for the Permanent Shiplock of Three Gorges Project

通过对三峡永久船闸建筑物及其基础的变形监测和遥测数据分析,揭示了其变形特性,即闸首和闸室墙变形主要受开挖形成的边坡岩体时间效应和岩体年周期变化的影响,船闸运行过程中闸室充、泄水的影响不大。闸首和闸室墙年变化幅度为3.59 mm-4.23 mm,全衬砌式结构的闸墙变形明显小于半衬砌式混合式结构的闸墙。在抽水方式有水调试时,闸墙受充、泄水的影响变化幅度小于1 mm;在运行初期,闸墙受充、泄水的影响变化幅度小于0.5 mm;闸墙在充、泄水后最大不可逆变形小于0.06 mm。各项变形实测数据均小于设计容许值,说明船闸建筑物及其基础的运行态势良好。

By analysis of the data of deformation of the shiplock structures and foundation from observation and remote measurement, the characteristics of the deformation of the shiplock is revealed, that is, the deformation of the lock head and lock wall is mainly influenced by the time-effect of the excavated slope and the annually cyclic variation of rock, not by the filling and emptying of water of the shiplock. The annually cyclic variation value of the lock head and lock wall is between 3.59 mm and 4.23 mm. The value of deformation of the entirely lined wall is obviously smaller than that of the half-lined one. In water-filling debugging, the value of deformation caused by filling and emptying of water is within 1 mm; in the early running course, the value is within 0.5 mm, and the maximum inresearble value is within 0.06 mm. Kach of the observed deformation data is smaller than the designed tolerable value, indicating that the state of the shiplock structures and foundation is good.