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针对松树镇矿＋４９０采区运输中巷围岩破碎、变形量大、维护困难的条件，应用巷帮深孔爆破卸压的应力控制法，改变巷道围岩应力分布状态，改进了巷道施工工艺和维护措施，取得了巷道维护的理想效果和经济效益。
Aiming at the conditions of rock crushing, large deformation and difficult maintenance in the transportation lane of +490 mining area in Songshu Town, the stress control method of laneway deep-hole blasting and pressure relief is applied to change the stress distribution of surrounding rock and improve the construction technology and Maintenance measures, achieved the ideal effect of roadway maintenance and economic benefits.