辽宁东部山区近几年来越来越频繁地发生一种灾害性的重力侵蚀:山坡和山谷源头整块的土层和风化壳在暴雨作用下突然下滑,成群出现,并伴随着刺耳的呼啸声,当地人称之为啸山。啸山的发生不仅本身成为一种山地灾害,它的产物还为泥石流的活动提供了物质和水的来源,有些甚至直接转化为泥石流活动。啸山的直接触发因素是暴雨。大多数啸山出现在一个降雨过程中一小时最大雨强产生的后期(也有提前或迟后出现的)。啸山临近时,呼啸声似飞机低空惊过一般,并能感觉到门窗的震动,啸山处原本没有泉水的地方会突然涌出大量的地下水,有些甚至形成1—2米高的水柱。随着一声轰呜,泥浆冲天而起,石 A mountainous region in the eastern part of Liaoning Province has experienced a more and more frequent gravitational erosion of gravity in recent years: the entire mass of soil layers and weathering crusts at the source of hillsides and valleys suddenly fall in the presence of heavy rains and appear in groups with harsh whistling sound , Locals called Xiaoshan. The occurrence of Xiao Mountain not only itself becomes a mountain disaster, but also its products provide a source of material and water for debris flow activities, some of which are even directly converted into debris flow activities. The direct trigger for howling is heavy rains. Most of the withering hills occur in the late (or earlier or later) one-hour maximum rainfall intensity during a rainfall. Howling approaching, whistling sound like a plane scared the general low, and can feel the vibration of doors and windows, where there is no springs where the sudden gush of plenty of groundwater, and some even form 1-2 meters high water column. With a roar, the mud sky, stone