钻孔应变观测点到地面载荷干扰源最小“安静”距离的理论分析

THEORETIC STUDIES ON THE SHORTEST‘QUIET’DISTANCE BETWEEN BOREHOLE STRAIN OBSERVATORY SITE AND SURFICIAL MECHANICAL DISTURBANCE SOURCES

河流、湖泊、仓库和铁路,是几种主要影响钻孔应变观测的地面载荷变化干扰源。针对这些干扰影响分别建立了不同的模型,提出了针对一定的干扰限定指标,估计观测点到干扰源的最小“安静”距离的方法。

Rivers,lakes,large storages and railway are some of the main disturbance sources to affect the strain field of borehole strain observatory due to loading and unloading on the surface. In this paper,the corresponding models are established for each of these disturbance sources,respectively,in order to determine the shortest‘quiet’ distance between the site of borehole strain observatory and the sources.