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长壁工作面的开采破坏了采区周围影响区内岩体的平衡状态。位于影响区内的巷道受到的影响与巷道和采区的相对位置有关。如位于采空区上方的平巷要发生下列移动和变形: 1、岩体的整体向下移动; 2、开采使岩体内应力变化而引起的巷道周围的变形。一九七○年,德让等对长壁工作面开采时采区周围巷道变形情况的研究表明,在开采煤层上方的平巷变形的范围超过采空区之外约80米。
The mining of long -wall faces destroys the balance of rock masses in the area around the mining area. The influence of the roadway located in the affected area is related to the relative position of the roadway and the mining area. For example, the lanes located above the goaf should undergo the following movements and deformations: 1. The overall movement of the rock mass is downward; 2. The deformation around the tunnel due to the stress changes in the rock mass during mining. In 1970, a study by De Jean et al. On the deformation of the roadway around the mining area when mining longwalls showed that the deformation of the roadway above the mining seam was about 80 meters beyond the gob area.