河南科技大学学报：自然科学版

地面沉降的模拟计算属于灰色问题,灰色系统模型有多种,选择合适的沉降量与时间的关系模型对模拟计算而言是很重要的,将某市地面沉降数据分为大样本和小样本序列,分别使用GM(1,1)和灰色线性回归组合模型进行了建模、预测和精度分析。研究结果表明,利用小样本数据和灰色线性回归组合模型进行模拟计算精度更好。

Ground subsidence simulation is a grey system analysis.Grey system model includes many kinds,so it is important that the suitable subsidence-time relational model is selected.Based on the large sample and small sample series of ground subsidence data in a city,the modeling,forecasting and accuracy analysis have been carried out by use of the GM(1,1) mode and the grey-linear regression combination model respectively.All the work involved in this paper indicates that the ground subsidence simulation is more accurate by use of small sample series data and the grey-linear regression combination model.