接触带巷道非等时距变形量预测方法分析

Analysis on Prediction Method for Non-equal Interval Roadway Deformation in Contact Zone

针对接触带巷道监测试验采集到的变形数据序列的非等时距问题,分别运用分段三次Hermite插值和嵌入时间影响因子Δt并重构模型背景值两方面分析了接触带巷道非等时距变形量的建模方式,建立了非等时距预测模型,通过同一组非等时距监测值的计算验证表明,含Δt的非等时距Verhulst模型更适用于接触带巷道围岩变形量预测,预测精度由勉强合格提高到好。

The monitoring test data of the roadway in contact zone was non-equal interval. Aimed at this problem, the modeling ways were analyzed based on piecewise cubic Hermite interpolation, as well as the impact factor At and reconstituted the background value. Accordingly, two non-equal interval prediction models were established. Calculated by the same set of monitoring value verified that, the Verhulst model, which involved the impact factor At, was more suitable for the deformation prediction of roadway in contact zone, and its prediction accuracy varied from barely qualified to optimal.