Abstract: According to the characteristics of stable occunence， thick ore body , gentle dip angle，high-garde and short north-south trend d ore body in Jinchanghe Lead-Zinc，the high stage large diameterdeep hdle side caving and subsequent filling mining method is selected , at the same time，the mining.technology of the mining method is described). In axder to ensure the reliability and rationality of sahe useof the mining method in the production process ,the stability analysis and demonstration of 15 m widestrip two-step stoping ( one-step stoping pillar , two-step stoping room) is simulated by FL.AC software.Simulation results show that using the method d mining every other , the plastic disturbance area of sur-rounding rock around the goaf is smal , and the whole area is stable after each 15m wide-strip has mined ,which proves that the mining method has the advanftages of salety , high efficiency and low cost ， and hascertain feasibility and rationality.The research results provide a theoretical basis for the safe and efficientproduction of the mine.

Key words: ｈｉｇｈ-ｓｔａｇｅ, ｗｉｄｅｓｔｒｉｐ, ｓｔａｂｉｌｉｔｙ, ｃｅｍｅｎｔｅｄｆｉｌｌｉｎｇｂｏｄｙ, ｌａｒｇｅｄｉａｍｅｔｅｒｄｅｅｐｈｏｌｅｓｔｏｐｉｎｇ