安徽省铜陵市枞阳县火山岩地区滑坡形成机理与防治策略研究

A study on formation mechanism of landslides in the volcanic rock area of Zongyang County,Tongling City,Anhui Province and the control strategy

通过本次1∶50 000地质灾害风险调查评价,总结了枞阳县火山岩地区滑坡的形成机理,并提出相应的防治策略。研究表明:降水、地形坡度和岩性是影响枞阳县火山岩地区滑坡的主控因素。研究区滑坡主要分布在相对高程低于10 m、地形坡度介于10°~25°的中-高丘微地貌、侏罗系-白垩系火山岩系出露区、月平均降水量大于120 mm、人口密度为300~500人/km2的区域。建议枞阳县火山岩地区滑坡治理应采用以治水为主,拦挡工程、抗滑工程为辅的防治策略。本研究结果可为枞阳县火山岩地区滑坡防治提供一定借鉴。

Based on the 1∶50000 geological hazard risk investigation and evaluation,the formation mechanism of landslides in the volcanic rock area of Zongyang County was summarized,and the corresponding prevention and control strategies were put forward.The results show that precipitation,topographic slope and lithology are the main factors affecting the landslide in the volcanic rock area of Zongyang County.In the study area,landslides are mainly distributed in the areas with relative elevation lower than 10 m,medium-high hill micro-topography with topographic slope between 10°and 25°,areas with outcrops of Jurassic-Cretaceous volcanic rocks,areas with average monthly rainfall greater than 120 mm,and areas with population density of 300~500 people/km2.It is suggested that the control strategy of landslide in the volcanic rock area of Zongyang County should be based on water control,supplemented by arresting works and anti-sliding works.The results of this study can provide some reference for landslide control in the volcanic rock area of Zongyang County.