Abstract: Among the numerous factors affecting the stability of a waste dump，the stacking parame‐ ters are of great significance. Taking a newly-built waste dump as an example，this study conducts stability calculations on the proposed waste dump and optimizes and adjusts the local stacking parameters that do not meet the stability requirements. Through analysis of the calculation results shows that the most danger‐ ous sliding arc is cut out from the foot of the slope of the retaining dam at the bottom of the waste dump，in‐ dicating that the designed parameters of the retaining dam have a significant impact on the stability of the waste dump. Parameter adjustment should first target the relevant parameters of the retaining dam body at the bottom of the waste dump. The research respectively optimized and adjusted the retaining dam accord‐ ing to the scheme of increasing the height of the retaining dam body by 5 and 10 m，and used the residual thrust method to recheck and calculate the stability of the optimized and adjusted waste dump. After calcu‐ lation，the safety and stability standards of the waste dump under natural，rainy and seismic conditions af‐ ter increasing the height of the retaining dam by 10 m all meet the requirements of the specifications，and there is a certain safety reserve. This indicates that the optimization and adjustment plan is reasonable and feasible，avoiding large-scale adjustments to the design parameters of the waste dump and improving work efficiency.

Key words: stacking parameters, stability and adjustment, retaining optimization, dam body