大坝变形监测中大地水准面的局部变化

Local variation of geoid in deformation monnoring of lare dam

大坝水库水位的升降改变了地球的局部重力场,导致大坝附近大地水准面形状的局部变化。本文计算了这种局部变化,并分析和讨论了所算得的结果。

The fluctuation of lage flam reservoir Water level changes the local gravitational field of the earth.This causes the local variation of the form of geoid at the vicinity of lage dams.The paper calculates this Kind of local variation, The calculated results are analyzed and disccussed.