Aiming at the problem of surrounding rock difficult to control for deep and large section chamber of manned aerial cableway in a coal mine,secondary support of the whole section is proposed.Based on FLAC2D nu-merical simulation,it's found that the most suitable time for secondary support is the turning point from violent deform-ation stage to gentle deformation stage.Bolt (cable)pre -tightening force should be properly matched in anchor nets support.After the whole section secondary support being applied to manned aerial cableway chamber,the deformation degree of the chamber surrounding rock decreases,so the surrounding deformation is effectively controlled.%针对某矿架空乘人装置人车深部大断面硐室围岩控制难度大的问题，提出了二次全断面支护方法，基于 FLAC2D 数值模拟得出了二次支护在变形剧烈阶段到变形平缓阶段的拐点进行为宜，锚网支护中锚杆（索）预紧力应合理匹配，对架空乘人装置人车硐室实施二次全断面支护后，硐室围岩变形量小，围岩变形得到有效控制。
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