文中阐明了这种复变应力函数迭加解法的基本原理，并用此方法计算了双孔、三孔和四孔边裂纹板的若干数值例子。
The basic principles of the method are described, and some numerical examples of the radial cracks appearing at the boundary of twin, three and four circular holes are calculated.
由迭加原理，可分离出任一单个裂纹面在无限大板中的虚拟应力，从而求出有限或无限域中各条裂纹的应力强度因子值。
By the principle of superposition fictitious stress on any individual crack surface in infinity can be resolved and also its value of stress intensity factor in infinity or finite body is obtained.
文中还用光测数据迭加原理确定了弹性应力阶段洞室围岩在各种荷载作用下的最终成果，避免了模型由于同时加载困难所带来的单独施加荷载所造成的繁琐量测和计算。
Using the principle of photoelastic data superposition, the author defined the net effects of stress in wall rocks of the cave under all kinds of load. This avoided the trouble…
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