斜坡应力分布的系统测试与反演分析

SYSTEMATIC STRESS TEST BASED BACK ANALYSIS OF STRESS DISTRIBUTION IN SLOPE

采用简易、快速、经济的洞壁应力恢复法对某工程边坡勘探平硐洞壁应力场作了系统测试,并采用FLAC2D软件对测试成果作了斜坡初始应力的反演分析。结果表明,斜坡应力场随深度变化具有明显分带性,应力量值随硐深曲线具有典型的驼峰式特征,与理论分析结果相符,表明该方法能较好地应用于斜坡应力场的系统测试和研究。成果对认识斜坡岩体的变形破裂及卸荷特征等具有重要意义。

The exploration adits wall stress field of one engineering slope was systemically tested, adopting the stress restoring method with simplicity, expeditiousness and economy. According to test result, the slope stress field was back - analyzed by FLAC^2D. The result indicated that the slope stress field had distinct zonation in depth. The curve of stress magnitude in depth had typical hump characteristic, which corresponds to the theoretical analysis. The outcome is of significance to examine the deformation, cracking and relief of the slope.