回采巷道

The roof separation is the great safe peril in bolter support roadways. 顶板离层是锚杆支护巷道最大的安全隐患之一。

The surrounding rocks of arched roadways are much more stable than that of rectangular roadways. 圆弧拱巷道围岩稳定性要远大于矩形巷道。

Other factors that may affect dam selection are roadways, fishway, locks, and log passages. 其他影响选坝的因素有道路，鱼道，船闸和筏道等。

Bridge roadways, edge girders and arches must be blasted so that they are broken at vital points. 桥上路面，边缘横梁和桥拱，都必须加以爆破，以保证在重要部位上的破碎。

Only use the allowed roadways when travelling in order to reduce the risk of colliding with people. 防止撞人,只许在允许的路线行驶