【摘要】 根据龙岩1990-2006年滑坡灾害样本和地质条件资料,运用统计方法,分析研究了龙岩市滑坡灾害的时空分布特征和滑坡与降雨、地质环境条件因子的关系。结果表明,龙岩市滑坡主要发生在3-9月,4-6月为高发期,8月滑坡数最多,频发区在连城东北部和永定南部;滑坡的季节性与降雨相吻合,与累计暴雨日相关性好,暴雨强度大,灾害的影响面广;灾害发生与当天和前10 d累计降雨量关系密切,灾害强度取决于当天降雨强度和前3 d累计降雨量的大小;滑坡多发生在地质环境敏感性中等偏强区域,降雨偏弱时,敏感性偏强区灾害发生概率高。更多还原

【Abstract】 According to the landslide samples and the geological conditions data from 1990 to 2006 in Longyan,the results using statistical methods showed: landslides occur mainly from March to September in Longyan;the high-incidence months include April to June;and the highest-incidence month is August.The areas of frequency are in the Northeast of Liancheng and the South of Yongding.Seasonal landslide is consistent with the rainfall.There is a good correlation between seasonal decline and accumulated rain days.If the rainfall is strong,the area of disaster is larger.The landslides match quite well with the cumulative rainfall of that day and ten days before.The rainfall intensity and the cumulative rainfall before three days are the most important factors.Landslides occur mainly in the regions with medium to strong sensitivity of geological environment.When the rainfall is weak,it is of high probability in the area with strong sensitivity.更多还原