What are the characteristics of mountain flood disaster? _ News

Seasonal, high frequency. Flood mainly under the influence of heavy rain, flood and storm occurrence in time consistent. China rainstorm mainly concentrated in May-September, thus the Flash flood disaster in China are also concentrated in May-September, especially in June-August is flood-prone.

Extremely rapid, disastrous. In mountainous areas because of high mountains and deep, dense River, rainfall quickly into water, and it brings together, velocity, a short time after the rain could lead to disaster, prediction is difficult.

Destructive, harmful. Mountain flood disasters are often accompanied by landslides and debris flow disasters, often caused by interruption of rivers, roads, bridges collapsed, farmland flooded Chong, the people of the tragedy.

Culture obviously prone to strong. Flash floods occur mainly in the mountains, hills and hillock, in particular mountain in rainfall, storm easy formed impact of water led to flash flooding, formation of torrential flood disaster.

Responsible editor: Sun Ailin SN146

I want feedback
Save a Web page

山洪灾害有哪些特点？ _新闻资讯

　　●季节性强，频率高。山洪灾害主要受暴雨的影响，因此山洪灾害的发生与暴雨的发生在时间上具有一致性。我国的暴雨主要集中在5—9月，因而我国的山洪灾害也主要集中在5—9月，尤其是6—8月更是山洪灾害的多发期。

　　● 来势迅猛，成灾快。山丘区因山高谷深，溪河密集，降雨迅速转化为水流，且汇集快、流速大，降雨后很短时间就会形成灾害，预警预报难度大。

　　● 破坏性大，危害严重。山洪灾害发生时往往伴随滑坡、泥石流等灾害，经常造成河流改道、公路中断、桥梁倒塌、耕地冲淹、房倒人亡的悲剧。

　　● 区域性明显，易发性强。山洪主要发生在山区、丘陵区和岗地，特别是位于暴雨中心区的山区，暴雨时极易形成具有冲击力的水流，导致山洪暴发，形成山洪灾害。

责任编辑：孙爱林 SN146

我要反馈
保存网页