According to simulation test and mathematical derivation, this article proposes out a method to establish fracture permeability indicating chart.
根据模拟实验，通过数学的推导，提出一种编制裂缝渗透率指示图的方法。
2
Based on tbe test results, a hypothesis indicating the process of failure of rare-reinforced concrete in two-stages bas been given, and the method of its calculation is also proposed.