Abstract: In deep mining, the excavation disturbance is large. Such factors of excavation disturbance as strength of surrounding rock of roadway, horizontal distance, vertical distance have been discussed in this paper, adopting monitoring and numerical simulation results. The result indicates that the increase of the rock internal friction angle and cohesion can weaken disturbance effect of the roadway, while tensile strength is almost not affected to the excavation disturbance; in the roadways when the distance exceed 5 times of theirs diameter condition, compared to vertical distance, the increase of the horizontal distance can significantly weaken the excavation disturbance of soft rock roadways; In vertical direction, The distribution of the excavation disturbance effect is different accordingly. When early roadway is located above the later roadway, increase in the horizontal distance can weaken the excavation disturbance effectively. On this basis, the determination method is proposed for optimal spatial relationship of roadways, which has certain significance on engineering practice.

Key words: roadway group, excavation disturbance, horizontal distance, vertical distance, lithology of surrounding rock