Abstract: The mining method in mine zone No.2 in Jinchuan nickel mine is continuous under cut- and -fill mining without pillars. The characteristics of mining method and high production caused the issue of filling body general stability of mine zone No.2attracting extensive attention. The article have made numerical simulation analysis of 16-line vertical pillar combined with engineering projects of 1# deposit body exploitation. The results are as follows. As the double-sublevel mining, the degree of stress concentration and the range of stress elevated zone could continue to increase. This increase lead to the vertical pillar more broken, but the vertical pillar could effectively reduce the vertical displacement of residual horizontal ore body and filling body. The mechanics function analysis of 16-line vertical pillar shows vertical pillar could effectively reduce upper body displacement. The support force of pillar is concerned with strength, and the strength is concerned with lateral pressure that pillar suffered. The strength is increased with lateral pressure increased. Therefore, enhanced the rate of roof-contact filling and improved filling body quality during filling process have contributed to the supporting capacity of 16-line vertical pillar.