北京碰河寺沟泥石流成因及综合防治对策

北京地区泥石流主要分布在密云区北部、怀柔区中部、延庆区东部及房山、门头沟区西部地区。北山泥石流受区域构造和山势走向所控制,总体呈北东向展布,其无论爆发频率、活动规模及发育密度均为北京山区之首位。研究区位于密云区东北部,为北山地区的一条老泥石流沟,曾在1976年发生过泥石流活动,支沟沟口处赵洪全一家房屋被冲毁,其它损失情况不详。2011年7月24日,碰河寺沟主沟发生特大山洪,将进村道路冲毁、毁坏房屋数十间、冲毁良田、果木上百株,造成造成巨大的经济损失,进行治理已是迫在眉睫。

Causes of debri flow in Penghesi and comprehensive control measures for prevention,Beijng

Debris flows in Beijing is mainly distributed in the north of Miyun district, the middle of Huairou district, the east of Yanqing district, and the west of Fangshan and Mentougou district. The debris flow in Northern Mountain is controlled by the region and the mountains, and it''s north east to the exhibition, and it''s the first of the mountains in Beijing, no matter the frequency, the size of the activity and the density of the growth.The studied area, located in the northeast of Miyun district, is an old debris flow gully in the north mountain district. In 1976, debris flow occurred. On July 24,1, a huge mountain flood occurred in the main ditch of Penghesigou, which washed out dozens of roads, destroyed dozens of houses, destroyed more than 40 mu of good farmland and destroyed hundreds of trees, resulting in huge economic losses.