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汉语拼音：ní shí liú

山区爆发的饱含泥沙、石块的特殊洪流。多发生于地质构造复杂，坡度较大，碎石、泥沙丰富的山区。突发性的暴雨往往是促使泥石流发生的动力条件。大的泥石流在短时间内能运移成百万立方米的泥沙、碎石以至巨大的石块，破坏性很大。

1. 山地在特大暴雨或大量冰雪融水冲击下，突然爆发的饱含大量泥沙、石块的洪流。多见于半干旱山地高原区。历时虽短暂，但来势凶猛，具有极大的破坏力。

   《人民日报》1981.4.9：“1950年的秋天，暴雨之后的 门头沟区 清水河 流域曾发生过泥石流。洪水卷着土沙石块奔腾而下，土地被冲毁，村庄消失了。”

• Latest reports say that mud slides buried entire villages.

  最新报道说泥石流掩埋了整个整个的村庄。

• There are unconfirmed reports of several small villages buried by mudslides.

  据未经证实的报道说，几个小村庄被泥石流吞没了。

• The mud - rock flow submerged the whole village.

  泥石流埋没了整个村庄.

• The top of the flow were armoured with boulders.

  泥石流的顶部布满了漂砾.

• These tiny debris - flow deposits formed on freshly excavated embankments of the California Aqueduct.

  这些细小的泥石流沉积是在新开凿的加利福尼亚渠的大堤上形成的.

• Some investigators maintain that large boulders must be supported by turbulence within a viscous debris flow.

  有些调查者认为大漂砾是通过粘性泥石流中的涡流搬运的.

• The snout and the top of the flow behind the snout, typically were armoured with boulders.

  泥石流的鼻部及鼻后的顶部都布满了漂砾.

• One of the characteristics of lava and debris valleys is a U - shaped transverse profile.

  熔岩流及泥石流谷的特点之一是横剖面为U型.

• Such estimate of viscosities do give us some concept of the sluggishness of debris flows.

  这种对泥石流粘度的估计确实给我们提供了一些泥石流惰性方面的概念.

• Several had escaped the mudslide by running to higher ground.

  有几人因及时跑到地势较高的地区从而免遭泥石流掩埋.

• Listen for rumbling sounds that might indicate an approaching landslide or mudflow.

  听见隆隆的声音可能预示着新一次即将来临的滑坡或泥石流.

• A trickle of flowing mud may precede a larger flow.

  很小的一股泥石流可能会先于更大的流量.

• Imprisoned lake, under Canada rainstorm, mountain massif landslide mud - rock flow.

  堰塞湖, 加之下暴雨, 山体滑坡的泥石流.

• The landslide mainly distributed in Cretacic sandrock area in Helong city.

  和龙市地质灾害主要为泥石流,其次是崩滑灾害.

• Mud and rockslides have blocked a number of highways in the Northwest.

  泥石流已经使西北部部分高速公路瘫痪.