Abstract: This review shows that the formula specified in SYJ14-85 is not suitable for calculating thrust forces of fixing concrete blocks on pump station 8uction and discharge lines。The analysis of stress 8tate of fixing blocks enable to simplify a ealcu1a-tion model and to set up an equation of pipeline flexure containing nine unknown. A computer program is developed and calculation examples are given. The r esults show good agreement with finite element method and demonstrate the effectiveness of this new formula for better thrust caIculation.