水库蓄水对库岸边坡稳定性的影响-《郑州大学学报(工学版)》

文章信息/Info

Title:: Study on influence of water impounding on Jiudianxia reservoir landslide

作者:: 宋丹青1; 王丰2; 梅明星3; 刘鹏飞4; 1.上海交通大学船舶海洋与建筑工程学院,上海,200030;2.河南大学生命科学学院,河南开封,475004;3.东南大学土木工程学院,江苏南京,210096;4.河南大学黄河文明与可持续发展研究中心,河南开封,475004

Author(s):: Song Danqing1; Wang Feng2; plum star3; Liu Pengfei4; 1.School of Marine and Architectural Engineering, Shanghai Jiaotong University, Shanghai, 200030; 2.School of Life Sciences, Henan University, Kaifeng, Henan, 475004; 3.School of Civil Engineering, Southeast University, Nanjing, Jiangsu, 210096; 4. Research on Yellow River Civilization and Sustainable Development, Henan University Center, Kaifeng, Henan, 475004

Keywords:: water impounding; reservoir bank landslide; stability; Jiudianxia reservoir

摘要:: 水库蓄水使库岸边坡稳定性变化较大,以甘肃省九甸峡库区燕子坪(28#)滑坡为例,采用GPS对滑坡的位移进行定期监测,分析蓄水对库岸边坡稳定性的影响规律,并采用边坡熵的方法进行验证.分析结果表明:①蓄水过程可分为3个阶段,包括蓄水位0~70 m,70~100 m和100~130 m 3个阶段,且每个蓄水阶段对滑坡的影响程度不同.②蓄水位100~115 m与115~130 m两个蓄水范围内滑坡的稳定性受影响程度不同.③采用边坡熵的方法验证蓄水与库岸滑坡稳定性的关系是适用的,对于其他类似研究可以提供借鉴作用.

Abstract:: The landslide stability is affected by the reservoir impoundment in a large degree, taking an exam-ple of Yanziping(28#)Landslide of Jiudianxia reservoir in Gansu province. The landslide displacement was monitored by using GPS regularly for analyzing the law of the landslide stability affected by the the impound-ment, and the law is validated by using the method of slope entropy. The results show that:(1) the process of impoundment can be divided into three stages including the 0~1/2 , 1/2 to 3/4 and 3/4 above the stage of the storage level,which is affected to different influence degrees;(2) the landslide stability is affected at dif-ferent levels between the range of water levelⅠ(100 m~115 m) andⅡ(115 m~130 m) in different degree;(3) it is suitable that the relationship between impoundment and the stability of reservoir bank landslide is val-idated by using the method of slope entropy with being provided by other similar studies.