As strain ellipsoid is a three-dimensional object,it s not convenient in dissecting geologic structure.
应变椭球体常作为一种解析地质构造的几何手段而被广泛地应用,但应变椭球体是三维空间体,在解析地质构造问题时常显不便,且无法作定量分析。
This paper introduces and perfects five methods for rock volume change estimation:if the axial rstio of finite strain ellipsoid a:b:c and longitudinal strsin of anyone direction with its direction cosines l,m and n is known,then estimate the volume change;under plane strain,method to estimate volume change;under non-plane strain.
简要地介绍了估算岩石体积变化的５种方法：在可能求得岩石有限应变椭球体真实大小的情况下计算岩石体变的方法；在平面应变状态下求岩石体变的方法，非平面应变状态下岩石体变的估算方法；利用岩石中有关元素的含量变化求岩石体变的方法；利用岩石中有关矿物的含量变化求岩石体变的方法。
