应用PC-1500计算机作共轭剪节理的主应力轴图解

在探索构造形变与应力状态之间的关系时，可借助点上具有代表性的共轭的两组剪节理（或 张节理等）面产状，确定主应力轴的方向、大小及剪切角．用ＰＣ—１６００袖珍计算机具有在２分钟 内自动完成主应力轴分析图解和计算的功能，从而代替费时、麻烦的手工操作．本文阐明： （１）应用赤平极射投影原理作主应力轴分析图解和计算的方法、原理； （２）源程序的设计及其应用说明； （３）手工操作与计算机编图、计算的结果图示对比及误差评述。由此得出结论：应用ＰＣ－１５００计算机实现编图、计算自动化，具有速度快、精度高的优点，是构造地质工作者的得力助手。

DIAGRAMMING THE PRINCIPAL STRESS AXIS OF CONJUGATE SHEAR JOINTS WITH MINI COMPUTER PC-1500

In seareh after the relationship between tectonic deformation and stress, the method of examining the occurrence of two groups of conjugate shear jo- ints ( or, tension joints)typical on the spot can be utilized for the determina- tion of the direction, size and shear angle of a principal stress axis. Diag- ramming and calculating the principal stress axis can be performed by means of a minicomputer PC-1500 automaically in 2 minutes instead of manually. This paper deals with: 1.diagramming and calculating the principal stress axis by stereoptic projection principle, 2.Assembling source program and explaining its use, and 3.Contrasting the results obtained of the programming and calculation by manual operation with those by computer's operation, and making remarks on deviations Thus, we may come to the conclution: Automatized mapping and calculation with a minicomputer PC-1500,which is high in accuracy and speed, is very helpful to the geologists who major in tectonics.