辽东山区泥石流特征及防治对策

辽宁省东部山区是我国北方地区泥石流多发区,1900~1989年的90年间,有35年发生了泥石流,共发生67次,发生频率为74.4%,平均2.6年一遇。泥石流不仅带来一时一地的重大经济损失与人员伤亡,而且还严重破坏了区域生态环境,带来土地沙化或石漠化等环境问题。泥石流主要集中在盛夏的7~8月,丹东地区的北部山区为多发区。介绍了泥石流时空分布特征及其形成原因,提出了预防与植物措施、工程措施相结合的防治对策。

Characteristics of Mud-Rock Flow in Mountain Area of Eastern Liaoning and Countermeasures for Prevention and Control

The mountainous area in the eastern Liaoning Province is a frequently-occurring region of mud-rock flow in northern China.During 90-year period from 1900 to 1989,there altogether 67 mud-rock flow happened in 35 years and the frequency is 74.4%,averaging once in every 2.6 years.The mud-rock flow would not only cause severe economic losses and heavy casualties,but also seriously destroy the ecological environment of the region and cause environmental issues of desertification or rock desert.The mud-rock flow mainly happens in the summer of July and August.The mountainous area in the northern Dandong is a frequently-occurring region.The paper introduces the characteristics of temporal and spatial distribution and cause of formation and puts forward countermeasures for prevention and control and combination of prevention and measures of vegetation and engineering works.