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岩层产状对基岩滑坡的影响

发表时间:2015-06-30  浏览量:1840  下载量:827
全部作者: 杨柳,梁收运
作者单位: 兰州大学土木工程与力学学院
摘 要: 基于岩层产状与滑向的关系、岩层倾角与基岩滑坡的关系和岩层倾向与坡向夹角对滑坡的影响3个方面进行综述。结果表明:1)随着岩层倾向与滑向夹角的增大,滑坡数量先减少后增加,滑坡数量最多的夹角为0~20°之间;2)随着岩层在滑向视倾角的增大,滑坡数量呈现增加—减少—增加—减少的趋势,滑坡数量最多的视倾角为10~20°之间,最少为大于40°;3)随着岩层倾角的增大,滑坡数量呈现增加—减少—增加的趋势,边坡安全系数先减小后增大,滑坡数量最多的岩层倾角为10~20°之间;4)随着岩层倾向和坡向夹角的增大,边坡的安全系数逐渐增大,位移逐渐减小,滑坡发育数量逐渐减小;当夹角为0~10°之间时,发育的滑坡数量最多,主要为小型或中型滑坡;当夹角为10~20°之间时,发育的滑坡数量减少,但大型滑坡数量增多。
关 键 词: 地质学;基岩滑坡;综述;岩层产状;影响
Title: Effects of attitude of bedrock on bedrock landslide
Author: YANG Liu, LIANG Shouyun
Organization: School of Civil Engineering and Mechanics, Lanzhou University
Abstract: By summarizing the relationship between attitude of bedrock and slide direction, that between dip angle of bedrock and bedrock landslide, and the effect of bedrock inclination on bedrock landslide, we get the main conclusions as follow: 1) With the angle between bedrock inclination and slide direction increasing, the quantity of landslide decreases and then increases, which reaches the top when angle is 0-20� 2) With the apparent dip increasing, the quantity of landslide shows the trend of increase-decrease- increase-decrease, which reaches the top when the apparent dip is 10-20� and hit the bottom when it is more than 40� 3) With the dip angle increases, the quantity of landslide shows the trend of increase-decrease-increase, the coefficient of safety firstly decreases and then increases, the quantity reaches the top when the dip angle is 10-20� 4) With the angle between bedrock inclination and slope aspect increases, the coefficient of safety increases, displacement decreases, and the quantity of landslide decreases. When the angle is 0-10� the quantity of landslide reaches the top, where the landslide is midget-scale and medium-scale. When the angle is 10-20� the quantity of landslide decreases, where the large-scale landslide increases.
Key words: geology; bedrock landslide; review; attitude of bedrock; effect
发表期数: 2015年6月第12期
引用格式: 杨柳,梁收运. 岩层产状对基岩滑坡的影响[J]. 中国科技论文在线精品论文,2015,8(12):1209-1217.
 
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