摘要
合肥县地质环境条件复杂,土质滑坡发育给合肥县带来了较大的经济损失。区内共发育滑坡109处,主要是浅表层的小型土质滑坡。在合肥县野外地质灾害调查研究的基础上,通过对县内滑坡统计分析,县内土质滑坡多分布于县西北、东北、西南各乡镇。土质滑坡发育规律除与碳酸盐岩与碎屑岩情况有关外,还与碳酸盐岩、碎屑岩的分化难易程度有关;地质构造对滑坡发育具有控制作用,由于堆积层结构松散,厚度比较小;降雨能够快速渗入到坡体内部,在一定的降雨量和降雨强度下,滑坡稳定性得到降低;人类工程活动对境内土质滑坡的发育的影响主要体现在人工切坡,水电站蓄水的影响也不容小觑。
Because of the complex geological environment conditions in Zunyi County ,the soil landslide development has brought great economic loss to this county .There are 109 landslides in the study zone ,which are mainly shallow and small landslides .Based on the field investigtion of the geological disasters and the statistical analysis of the soil landslides in Zunyi County ,it is known that the soil landslides are mainly located in the northwest ,northeast and southwest of the county .The development of the soil landslides are not only related to the distribution of the carbonate rocks and clastic rocks in the zone ,but also related to the difficult degree of their decomposition .The geological structure has the control action to the development of the landslides ,and the thickness of the accumulation layer is relatively small because of its loose structure .The rainfall can fast infiltrate to the internal of the slope ,and in a certain rainfall amount and intensity , the slope stability will be reduced .The effects of human engineering activities on the soil landslide development in the territory would mainly reflect in artificial slope-cutting ,in addition ,the effect of the water storage in hydropower station could not be underestimated .
出处
《水利与建筑工程学报》
2014年第2期140-144,共5页
Journal of Water Resources and Architectural Engineering
基金
贵州省国土资源厅科技项目(黔国土资地灾资字20102224019号)
关键词
合肥县
土质滑坡
发育规律
地质构造
Zunyi County
soil landslide
development law
geological structure
