倾斜巷道或采煤工作面,顶板不仅对支架施加垂直方向的压力,而且还有使支架倾斜向下滑动的推力。为使巷道稳固,支架应有一定的迎山,即支架和顶底板垂直线保持一个向上倾斜的角度。迎山角的大小,与巷道坡度及顶板岩性有关。一般煤层倾角每增加6～8°支架沿倾斜方向可以上仰1°,但最多不得超过9°。 一、测定原理 设煤层倾角为α,支架与重垂线有夹角γ,迎山角β(如图所示)。则巷道倾角与重垂线夹角和迎山角有关系:α=β+γ Tilting roadways or coalfaces, the roof not only applies vertical pressure to the bracket, but also the thrust that slides the bracket downward and slides downward. In order to make the roadway stable, the bracket should have a certain amount of welcoming, that is, the vertical line of the bracket and the top plate should maintain an upward tilt angle. The size of the hill, with the roadway slope and roof lithology. For every 6 to 8 ° increase of general coal seam inclination, the supporter can be tilted by 1 ° along the tilting direction, but the maximum can not exceed 9 °. First, determine the principle Set the coal seam inclination α, bracket and the heavy vertical line has an angle γ, Ying Shan angle β (as shown). Then the roadway angle and heavy vertical angle and the hill has a relationship: α = β + γ