摘要
兰州及周边地区广泛分布着第三系半成砂岩边坡。近年来,随着高速公路、铁路、桥梁等大型工程的建设,砂岩边坡的治理工程也迫在眉睫。由于第三系半成砂岩边坡支护理论不完善,很多治理后缓坡常在雨季出现大量滑塌;而自然界中有很多垂直的砂岩边坡、丹霞地貌却能长期稳定。本文通过总结自然稳定陡坡、丹霞地貌的稳定规律和特点,并分析了许多治理后又滑塌的工程边坡,大胆提出了借鉴稳定丹霞地貌规律进行边坡加固的理念。丹霞地貌是上世纪30年代命名的一类地貌类型。丹霞地貌是内陆盆地沉积的红色屑岩,后来地壳抬升,岩石被流水切割、溶蚀和重力崩塌等综合作用而形成的陡崖、孤立突出的塔状地形。丹霞地貌发育始于第三纪晚期的喜马拉雅造山运动。
Lanzhou and the surrounding areas are widely distributed in the Tertiary semi-sandstone slope. In recent years, with the highway, railways, bridges and other large projects, sandstone slope control project is also imminent. Due to the imperfection of the theory of the semi-sandstone slope support in the Tertiary, many gentle slopes often fall in the rainy season after governance, but there are many vertical Danxia landform can be stable for a long time. In this paper, by summarizing the stability law and characteristics of natural and steep slopes and Danxia landforms, analyzing many engineering slopes with falling after governance,boldly put forward the idea of stabilizing Danxia landform for slope reinforcement.Danxia landform is a class of landforms named after the 1930s. Danxia landform is the inland basin deposited red clastic rock, and later the crustal uplift, the rock is water cutting, dissolution and gravity collapse and other comprehensive role in the formation of the cliff, isolated prominent tower terrain. Danxia landform development began in the late Tertiary Himalayan orogeny.
出处
《中国建材科技》
2017年第4期69-72,共4页
China Building Materials Science & Technology
关键词
半成砂岩边坡
电镜扫描
裂隙
边坡滑塌
丹霞地貌
稳定直立坡
semi-sandstone slope
electron microscopy scanning
fissure
slope falling
danxia landform
stable vertical slope
