延庆地区水头村泥石流形成条件及发展趋势
Formation conditions and development trend of debris flow in Shuitou Village,Yanqing area,Beijing
牛海威 1孙永彬 1李启亮 2王诜 2李婧玥3
作者信息
- 1. 中核地质科技有限公司,河北 石家庄 050002;核工业航测遥感中心,河北 石家庄 050002;河北省航空探测与遥感技术重点实验室,河北 石家庄 050002;高分辨率对地观测系统河北数据应用技术支持中心,河北 石家庄 050002
- 2. 中核地质科技有限公司,河北 石家庄 050002;核工业航测遥感中心,河北 石家庄 050002;高分辨率对地观测系统河北数据应用技术支持中心,河北 石家庄 050002
- 3. 中核地质科技有限公司,河北 石家庄 050002;核工业航测遥感中心,河北 石家庄 050002;河北省航空探测与遥感技术重点实验室,河北 石家庄 050002
- 折叠
摘要
水头村泥石流沟是延庆地区典型沟谷型泥石流沟之一,具易发性高、危险性大的特点,严重威胁下游水头村村民.本文以水头村泥石流沟为研究对象,通过精细调查与GIS统计分析,获取了该流域降雨、地形地貌、物质来源等信息,对泥石流流域分区特征和形成条件进行研究,综合14个识别因子,确定了该泥石流沟的发展阶段,并预测其发展趋势,通过单沟泥石流堆积区公式预测了该流域最大危险区,并提出了防治措施建议.研究表明:水头村泥石流沟内松散堆积物动储量达27.96万 m3,其中以残坡积和冲洪积为主要物源;该泥石流属于暴雨-沟谷型-支沟群发型泥石流沟,发展阶段处于形成期,最大危险区面积为0.737 km2,威胁沟口水头村住户21户59人和红水公路350 m.建议采用定期巡视+局部物源稳固+清理排导槽相结合的防治措施.研究成果可为该区泥石流灾害防治提供基础数据支撑和科学依据.
Abstract
The debris flow gully in Shuitou village is one of the typical gully debris flow gullies in Yanqing area.Based on debris flow gully head village as the research object,through careful investigation and statistical analysis of GIS,obtained the basin rainfall,landform,the material source of information,formation conditions,such as the characteristics and formation conditions of debris flow valley division,comprehensive 14 recognition factor,determining the development stage of the debris flow gully,and predicted its development trend,The most dangerous area is predicted by the formula of single gully debris flow accumulation area and the prevention and control measures are proposed.The results show that the dynamic reserves of loose deposits in shuitou village debris flow gully reach 279 600 m3,of which the residual slope deposit and alluvial diluvial deposit are the main sources.The debris flow belongs to the type of rainstorm,gullies and branch gullies.The development stage is in the formation stage.The maximum danger area is 0.737 km2,threatening 21 households and 59 people of Gulou Slotou Village and 350 m of Hongshui road.It is suggested to adopt the prevention and control measures combining regular patrol,local source stabilization and cleaning of the channel.The research results provide basic data sup-port and scientific basis for debris flow disaster prevention and control in this area.
关键词
泥石流/形成条件/识别因子/发展趋势Key words
debris flow/formation condition/recognition factor/the development trend引用本文复制引用
基金项目
北京市延庆区泥石流沟精细调查与评价项目(0747-1761SITCN426-4)
出版年
2024
NETL
NSTL
万方数据