在构造解析中,对地质构造的面理和线理进行组构分析,往往要涉及到求解赤平图中的极密中心产状和最佳拟合π圆。其图示和计算原理,兰姆赛(Ramsay,1967)已作了系统介绍。本文只是对其计算过程进行简化,利用可编简单程序的电算器,直接代入产状数据,即可又准又快地求得极密中心产状和π圆产状,使计算回避了用赤子网操作和读数的繁琐工序,效率较兰姆赛法提高10倍以上。 In the tectonic analysis, the texture analysis and geophysical analysis of the tectonics are often involved in solving the extremely dense center shape and the best fitting π circle in the Chiping diagram. Its illustration and calculation principle, Ramsay (1967) has made a systematic introduction. This article only simplifies the calculation process, the use of simple programs can be programmed directly into the production data, you can accurately and quasi-quasi-fast center and the output of π-like output, the calculation to avoid the use of Red subnet operation and reading of the tedious process, the efficiency of more than 10 times more than the Lambs match.