摘要
云南大关县主要地质灾害类型有滑坡、崩塌、泥石流和不稳定斜坡等,其中以滑坡和崩塌为主.调查与数据统计表明,滑坡多发生在第四系成因的松散土体中;崩塌多发生在碎屑岩、碳酸盐岩构成且地质构造发育的陡坎、陡崖部位;大气降雨是形成地质灾害的重要诱发因素,多雨年份和每年的雨季是地质灾害的多发季节;不合理的人类工程活动诱发了地质灾害的发生.
The main geolog ical hazards in Daguan County include landslide,land fall,unstable slope and mud-rock flow,among which the landslide and land fall are the major ones. It is indicated that most landslides mainly occur in the Quaternary sediments,and land falls take place in steep slopes and cliffs of clastic rock or carbonate rocks with well-developed geological structures. The rainfall usually triggers geological hazards,hence there are more geo-hazards happened in rainy season sand in years with heavy rainfall. Some human engineering activities like mining,have similar influence on the geological hazards.
出处
《河南科学》
2014年第1期79-82,共4页
Henan Science
基金
云南大学中青年骨干教师培养计划(21132014)
云南省教育部"春晖计划"科研项目(Z2008-1-65001)
云南大学地质研究所联合资助
关键词
地质灾害
发育规律
滑坡
崩塌
geo-hazard
developing patterns
landslide
land fall
