摘要
位于砂岩地层上的堆积层斜坡是重庆开县广大农村居民的主要生活生产场所,其位移变形直接关系着住户的生命财产安全.根据现场调查指出人口密度大、过度开垦是导致斜坡变形的重要人为因素.通过专业监测资料分析和实地调研,揭示出该类斜坡具有阶段性蠕滑、位移在雨季增长明显的变形特点,滑面通常位于土岩接触面或堆积层中黏粒含量较高且相对隔水的层面.这些结论可为地质灾害治理和西南地区城镇建设提供依据.
The mass of countrymen are living on the deposit slopes at sandstone bedrock in Kaixian,Chongqing.The deformation of slopes affects severely the safety of lives and properties of the inhabitants.On the basis of field investigation,it is shown that the man-made reason of slope deformation is population explosion and excessive reclamation.According to the analysis of professional monitoring data and field investigation,it could be illuminated that the deformation of slopes is intermittently developing,and the displacement increases remarkably in rainy season;and the slip surfaces always exist on the interface of the upper deposit and bedrock,or in the zone of deposit soil where clay content is large and it is not relatively penetrative.These conclusions could be inferred for geological hazards mitigation and town constructions in Southwest China.
出处
《三峡大学学报（自然科学版）》
CAS
2011年第5期50-53,共4页
Journal of China Three Gorges University：Natural Sciences
基金
三峡大学青年科学基金(0620090034)
关键词
砂岩
堆积层
斜坡
变形规律
成因机制
sandstone
deposit
slope
deformation properties
formation mechanism
