论文部分内容阅读
以锦屏二级为工程背景,通过对猫猫滩闸址区域内断层的统计,得到断层数量与尺度的幂律关系,并通过分段线性拟合的方法估算了断层系统的尺度-数量分维发现,当断层迹长r<0.1km时,分维D=0.4875;当断层迹长r>0.1km时,分维D=1.4961。通过该尺度律关系,结合蒙特卡洛法,推演了更小规模的节理的空间分布。运用DDA数值计算程序,分析并模拟了大水沟地下厂房的开挖过程,获得了高度节理化的由开挖引起的应力、位移变化图。
Based on the second-level project of Jinping, the power-law relationship between the number of faults and the scale is obtained through the statistics of faults in the area of the Batiansan gate. The scale-number distribution of the fault system is estimated by piecewise linear fitting The fractal dimension D = 0.4875 when the fault trace length r <0.1km, and the fractal dimension D = 1.4961 when the fault trace length r> 0.1km. Through the scale relationship and the Monte-Carlo method, the spatial distribution of the smaller joints is deduced. The DDA numerical calculation program was used to analyze and simulate the excavation process of the Dashuigou underground powerhouse and to obtain a high degree of joint deformation and stress induced by excavation.