ANALYSIS ON DEVELOPMENT CHARACTERISTICS AND FACTORS OF GEOLOGICAL DISASTERS IN YANJIN COUNTY, YUNNAN PROVINCE
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摘要: 通过地质资料分析, 结合野外详细调查, 揭示盐津地区地质灾害的发育特征和影响因素。研究认为, 盐津地区滑坡多发生于第四纪松散坡积斜坡, 崩塌多发生于砂岩、页岩、泥岩软硬相间结构斜坡与灰岩高陡悬崖, 泥石流多发生于河谷沟谷; 地质灾害控制性影响因素包括地质构造、地形地貌、坡体结构和岩土体工程地质岩组, 诱发因素包括地震活动、降水和人类工程活动; 地质灾害与人类工程活动和采矿活动关系密切。研究成果对当地防灾减灾具有重要指导作用。Abstract: The geological disasters in Yanjin County in Yunnan Province are a big threat to the local people's safety and society development. By analysis on the geology data, combined with field work, we find that landslide occurs in the quaternary loose soil sediments. Collapse occurs in the slope where it consists of sandstone, shale, mudstone, and could be appeared in the high slope in the limestone area, debris flow and other landslide disasters related to earthquake, raining and human engineering activity and mining activity. The main controlling factors are geological structure, topography, slope structure and engineering geology rock group; the main inducing factors are earthquake activity, rainfall, and human engineering activity. Accurate analysis of the geological disasters factors will contribute to the work of disaster prevention and reduction.
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图 1 盐津地区地质灾害点分布
Figure 1. A distribution map of geological disasters in Yanjin district
图 4 柿子乡柿子村两河口滑坡滑床岩性与全景图
Figure 4. Slide bed lithology and panorama of Lianghekou landslide in Shizi village Shizi township
表 1 盐津地区地质灾害分布
Table 1. Geological hazard distribution in Yanjin district
乡(镇) 滑坡 崩塌 泥石流 合计 牛寨乡 11 2 0 13 滩头乡 7 2 0 9 落雁乡 15 3 0 18 中和乡 6 3 0 9 柿子乡 24 7 0 31 豆沙镇 19 10 0 29 兴隆乡 24 6 0 30 普洱镇 32 10 0 42 盐井镇 28 8 2 38 庙坝乡 51 12 1 64 合计 217 63 3 283 
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