A falling accumulation lies in the K43+040-K43+210 segment of a road, some big blocks falling from the bed rock back of the accumulation mainly compose it.

• 堆积体位于四川某公路K43+040-K43+210段岷江左岸,其物质组成主要是后缘基岩崩塌形成的粒径较大的块体,架空现象明显。