基于块体理论分析方法中的矢量分析方法，编制计算程序研究地震时程曲线下的块体稳定性。具体的研究思路是：首先输入所需的结构面与临空面信息，然后根据有限性定理和可动性定理判断有限性和可动性，在块体可动的基础上，再找出块体在自重以及地震荷载共同作用下的滑动模式（单面滑动或双面滑动），最后求出块体在该滑动模式下的安全系数，得到动安全系数时程曲线。将画块体程序加入其中，以便于为考虑黏聚力时提供接触面面积以及块体体积等相关信息。  

The block stability based on earthquake time-history curve is studied by computation program. Vector analysis of block theory is adopted for programming. The detailed approach involves the following procedures: input the required information of structural planes and free faces, and subsequently determine the finiteness and mobility of the block according to finiteness theorem and mobility theorem. If the block is movable, find out the sliding mode of the block (single face sliding or double face sliding) under the combined action of dead weight and seismic loads. Finally compute the safety factor under that sliding mode and draw the time-history curve of dynamic safety factor. In addition, a block drawing program is added to obtain information regarding the contact area between each face and the volume of the block required for the computation when the cohesion between the blocks is considered.