黄土高原山区城镇边坡地质灾害风险分级系统--以吉县吉昌镇为例

随着山区城镇建设规模的扩张,城镇边坡风险评价与分级成为亟需开展的一项研究工作,同时,对于山区城镇土地利用规划、地质灾害防治决策等具有重要现实指导意义。该文以吉县吉昌镇为例,在前人研究的基础上,开展黄土高原城镇边坡地质灾害风险分级系统研究,通过完善、优化城镇边坡危险性评价指标,采用数理统计学方法重新厘定城镇边坡危险性与危害性的评分分级标准,进而依据建立的城镇边坡地质灾害风险分级矩阵表确定边坡的风险级别,探索建立黄土高原山区城镇边坡地质灾害风险分级系统,为山区城镇土地利用规划、建设以及地质灾害风险防控提供技术支撑。

Risk Classification System of Slope Geo-hazards of Mountainous Town in Loess Plateau:Taking Jichang Town of Jixian County for Example

With expansion of mountainous urbanization construction,study on risk assessment and classification of town slopes has to be carried on,which has important guiding significance for land-use planning,prevention and control of geo-hazards in mountainous towns.Based on the previous studies,study on risk classification system of town slopes geo-hazards in loess plateau has been carried out.In this article,the assessment factors of slope hazard has been improved and optimized,and the classification standard of the hazard and consequence of town slope geo-hazards has been determined afresh,and then risk level of town slopes has been obtained according to the established risk classification matrix of town slopes geo-hazards.eventually,risk classification system of slopes geo-hazards of mountainous towns in loess plateau has been set up,which provides land-use planning and construction,risk prevention and control of geo-hazards in mountainous towns.