一、泥石流的整体观山区铁路的沿河段和沿山麓段,常通过泥石流呈片状或带状发育的地区。这些地区的泥石流或沿河谷一岸或沿山麓集中分布,堆积扇相邻很近。它们或者两翼相连成花边状,甚至相互掩盖汇为一个大扇;或者沿河谷两岸犬牙交错分布;或者夹河对峙,使主河往复变迁及沿河两岸山体坍 First, the overall view of the debris flow Mountain railway along the river and along the foothills, often through the debris flow was flaky or ribbon-shaped areas. Debris flow in these areas is either concentrated along the banks of the valley or along the foothills, and the accumulation fans are adjacent to each other. They are connected with two wings in the form of lace, or even cover up each other as a large fan; or along the valley staggered distribution; or Jiahe confrontation, so that the main river to reciprocate and the collapse of the mountains along the banks