软岩层 meaning in Chinese

incompetent bed
soft digging
soft formation

Study on computation method for casing load induced by soft rocks
软岩层引起的套管外载计算方法研究
Effect of soft rock controlled entirely on structural stability of preparatory workings , adjoining rock
控制软岩层对采准巷道围岩结构稳定的作用
The general rule of fissure development in low dip soft - hard interbedding rock mass is described , and then based on this the dam foundation seepage is simulated with dual - medium model , and the influence of unstratabound fissure and waterproof curtain is discussed
摘要阐述了缓倾软硬互层状岩体中裂隙发育的一般规律，在这个基础上采用双重介质模型对层状坝基渗流进行了模拟，讨论了软岩层中切层裂隙的发育以及嵌入软岩帷幕对坝基渗流场的影响。
Through analysis , we can conclude that when the unstratabound fissure in the soft layer cannot form the connected pathways the waterproof curtain that extended into soft layer is validity ; and when the connected pathway can be formed , the effect of the waterproof curtain is finite
分析可知，当软岩层中不存在可以形成上下游贯穿通道时，延伸嵌入软岩的帷幕对坝基渗流的作用是有效的；当存在通过切层裂隙形成的上游贯穿通道时，延伸嵌入软岩的帷幕对坝基渗流的作用则是有限的。