三峡库区湖北段降水时空分布与滑坡灾害的关系

发布时间：2018-08-29 11:37

【摘要】：在分析三峡库区湖北段滑坡灾害发育规律的基础上,结合三峡库区湖北段1980-2010年不同时间尺度降水的时间和空间分布特征,得出持续性降雨与暴雨是影响三峡库区湖北段滑坡地质灾害发育的敏感因子。结果发现:三峡库区湖北段滑坡发生区域性强,且库区湖北段降水量的分布与滑坡地质灾害发生的年内变化相一致;库区内多雨中心位于库区鹤峰附近;根据三峡库区降水量分布图,结合库区地质环境,建议将库区强降雨地区作为地质灾害重点防护区和监测区,尽可能以最小代价确保库区稳定性;此外,通过对滑坡灾害与不同时段不同降水类型的相关系数分析,进一步验证前期降水量的累积和强降雨是三峡库区湖北段发生滑坡地质灾害的重要诱因。
[Abstract]:Based on the analysis of the development of landslide disaster in Hubei section of the three Gorges Reservoir area, the temporal and spatial distribution characteristics of precipitation in different time scales from 1980 to 2010 in Hubei section of the three Gorges Reservoir area are analyzed. It is concluded that continuous rainfall and rainstorm are sensitive factors to the development of landslide geological hazard in Hubei section of the three Gorges Reservoir area. The results show that the landslide occurrence in Hubei section of the three Gorges reservoir area is strong, and the precipitation distribution in Hubei section of the reservoir area is consistent with the annual variation of landslide geological hazard, and the rainy center in the reservoir area is located near Hefeng in the reservoir area. According to the precipitation distribution map of the three Gorges reservoir area and the geological environment of the reservoir area, it is suggested that the heavy rainfall area in the reservoir area should be regarded as the key protection area and the monitoring area for geological hazards, and the stability of the reservoir area should be ensured at the lowest possible cost. Through the correlation coefficient analysis between landslide disaster and different precipitation types in different periods, it is further proved that the accumulation of precipitation in the early stage and the strong rainfall are the important inducements of landslide geological hazard in Hubei section of the three Gorges Reservoir area.
【作者单位】：湖北省气象局湖北省气象信息与技术保障中心;湖北省气象局武汉中心气象台;
【基金】：基金项目:“三峡库区地质灾害防治监测预警工程专业监测系统”(SXJC-3ZJ1D3)
【分类号】：TV223;TV697.3

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