概率积分法沉陷预计的边缘修正模型

针对概率积分法沉降变形预计曲线边缘收敛过快的问题,以2个不同主要影响半径的单元下沉盆地按一定比例的组合表示边缘修正模型的单元下沉盆地,按照叠加原理建立了地表移动盆地内任意点的沉降、变形预计模型,并根据多个观测站实测数据反演概率积分法及其边缘修正模型参数,建立了修正模型参数与概率积分法参数之间的统计关系。实例分析结果表明,边缘修正模型的预计结果更接近于现场实际,具有较高的实用价值。

Edge-amended model of probability-integral method for subsidence prediction

To solve the problem of quick convergence on the edge of subsidence and deformation curves predicted by probability-integral method, the unit subsidence basin was described as the sum of two unit basins with different main influential radii according to a certain proportion, then, edge-amended prediction model for subsidence and deformation of an arbitrary point in the ground movement basin was estab- lished via superposition principle ; Field data of the observation stations were adopted to inverse parameters of probability-integral method and its amended model, and the statistical relationships between the parameters were set up. Example analysis shows that： the edge-amended model, whose prediction values accord more with the field surveying data, could be applied in practice.