【摘要】 针对某水电站地下厂房地下洞室群的地形地质条件,在边界上施加分布位移与分布面力两类不同边界条件下,采用7种方案模拟构造应力场,对其初始地应力进行了多元回归计算,并对回归结果进行了比较分析。结果表明:相对于在边界上施加位移的方案,在边界上施加分布面力的方案对x、y向面力分布形式的变化较敏感;在边界上施加均布位移的方案操作简单,模拟效果较好比较适合于区域性地层较平缓、岩体状况较好的工程条件。更多还原

【Abstract】 Simulation of initial stress field is discussed by ways of applying different distribution of displacement and stress on boundary under area geology and geography for underground powerhouses of a hydropower station.Adopting seven projects,the initial ground stress of the underground powerhouse has been analyzed by multiple regression analysis method.The results show that compared with the plan of applying displacement on boundary,the condition of distributed stress is sensitive;project two of distributed displacement is simplicity to operate.Moreover,the effect of simulation works well.The project of applying uniformly distributed displacement on boundary is appropriate for engineering condition of gentle stratum and intact rock.更多还原