Based on sufficient investigation of relative field at home and abroad , combined with actual state of engineering , aimed at the characteristics of low temperature waste heat power generation , under adequate consideration of economical efficiency , the thermodynamic system models on the base of rankine - cycle , which mainly consisted of evaporator , ehd condenser and steam turbine - generator group with r11 as working fluid , were constructed after comparing the current low temperature waste heat power generation systems 文中在对国内外相关领域进行了充分调研的基础上，结合工程实际状况，针对低温余热发电特点，充分考虑经济性的前提下，对现行的低温余热发电系统进行比较，选择了以具有低沸点的r11为工质，由蒸发器、 ehd冷凝器、汽轮机-发电机组等主要部件组成的有机朗肯循环热力系统模型。
Based on the summary of the famous strength criterions or strength envelope models in last century , smp ( matsuoka - nakai ) strength criterion which is wildly used in soil mechanics is briefly introduced and then brought into the practical calculations in geotechnical engineering in this paper , namely this famous three - dimensional strength criterion is used to modify the classic rankine soil pressure theory and the formulas of the critical edge load and the critical load 本文在综述了上世纪一些著名的破坏准则和强度包线模型的基础上，简单介绍了在土力学中有广泛应用的smp (松岗?中井)破坏准则，将这一著名的土体三维破坏准则应用于岩土工程实际计算(土压力计算和地基承载力计算)中，即运用smp (松岗?中井)破坏准则修正了经典的朗肯土压力计算公式和临塑荷载、临界荷载计算公式。
