摘要
滑坡裂缝是滑坡在形成和发展过程中一种重要的伴生现象,在滑坡运动过程中,裂缝代表了滑体表层的一种变形形迹。通过对甘肃舟曲锁儿头滑坡多年表面裂缝变形和降雨量监测数据的汇总分析,结果发现,锁儿头滑坡裂缝累积位移时程曲线具有非线性变化特征,裂缝变形速率具有较大的空间和时间变异性,滑坡裂缝月位移量与月降雨量之间具有较好的对应关系。监测数据显示,滑坡体长期处于蠕变状态。
The crack is mainly accompanied with the procegs of formation and development of landslide, which represents the deformation feature of surface layers of land sliding body. The monitoring data of crack deformation and rainfall of Suo＇ertou land-slide in Zhouqu county of Gansu Province for years are analyzed. The results indicate that the relation between cumulative dis-placements of cracks and time is characterized as nonlinearality, and the deformation rate of cracks shows a large spatial and tem-poral variability. The monthly displacement of cracks is closely correlated with the monthly rainfall. Therefore, the Suo＇ertou landslide body remains in state of creep for a long time.
出处
《人民长江》
北大核心
2013年第3期33-35,43,共4页
Yangtze River
基金
国家自然科学基金项目(41072213
0801212)
中央高校基本科研业务费专项资金(lzujbky2011-7)
关键词
滑坡裂缝
降雨量
预测预报
锁儿头滑坡
舟曲
landslide crack
rainfall
prediction and forecast
Suo＇ertou landslide
Zhouqu
