北京通州区“7·21”特大暴雨灾害与城市水土保持

Heavy rainfall disaster on July 21,2012 in Tongzhou district in Beijing and urban soil and water conservation

2012年7月21日发生在北京市的"7·21"特大暴雨引起了社会的广范关注,北京通州区作为北京重点发展新城之一,在这次特大暴雨中也遭受了严重的灾害。通过分析通州区"7·21"特大暴雨灾害发生的原因,根据水土保持新法规,提出通州区城市建设从源头控制水土流失、提高城市雨水管网利用率,综合利用渣土资源、提高土石方利用率,减少地面硬化率、提高植被覆盖率以及充分利用雨洪资源、提高城市建设雨洪利用率等水土流失防治对策,以期为城市建设防灾减灾提供参考。

Heavy rainfall disaster on July 21,2012 in Beijing had aroused wide concerns in China.Tongzhou district,being one of the key development cities in Beijing municipality,suffered a serious disaster in this heavy rail.This paper gives a series of measures on urban soil and water conservation from new views and practices of soil and water conservation in order to provide ideas and practices for disaster prevention and mitigation in urban regions.It includes control of soil erosion source and utilization of surface runoff comprehensive utilization of dregs and soil resources of earth and stone reducing the ground hardening rate and increasing vegetation coverage and utilization of rainwater resources.