基于垂直条分法改进计算式的库岸滑坡滑速分析-《山地学报》

文章信息/Info

Title:: Sliding Velocity Analysis of Reservoir Bank Landslides Based on the Improved Vertical Slice Method

作者:: 黄锦林;钟志辉;张明飞;; 1．广东省水利水电科学研究院，广东广州510630；
2.广东省岩土工程技术研究中心，广东广州510630；
3. 武汉大学土木建筑工程学院，湖北武汉430072；
4.华南理工大学土木与交通学院，广东广州510641

Author(s):: HUANG Jinlin; ZHONG Zhihui; ZHANG Mingfei; 1. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510630, China;
2. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510630, China;
3. School of Civil and Architectural Engineering, Wuhan University, Wuhan, 430072, China;
4. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China

Keywords:: reservoir bank landslide; sliding velocity calculation; vertical slice method; improved formula; Egongdai ancient landslide

摘要:: 在潘家铮山地滑坡垂直条分法滑速计算式的基础上,考虑库水阻力及受水作用后底摩擦系数减小的影响,推导出适合库岸滑坡滑速分析的垂直条分法改进计算式。利用该式,分析了鹅公带古滑坡失稳工况下的滑动结果,并比较了两种算法的差异。结果表明,鹅公带古滑坡蓄水失稳滑动后的最大水平滑速约8 m/s,两种算法的结果有一定差异。垂直条分法改进计算式考虑了库岸滑坡滑动过程中受库水作用的影响,计算结果更符合实际,能提高库岸滑坡滑速计算精度。

Abstract:: Based on the Pan Jiazheng vertical slice method formula and considering the water resistance and the decrease of friction coefficient after the water influence, this paper proposes an improved formula of vertical slice method that is feasible to analyze the sliding velocity of landslides near reservoir. With this formula, this paper analyzes the sliding velocity of Egongdai ancient landslide under unstable situation, and compares the difference of those two methods. The results shows that after water storage, the maximum horizontal velocity of Egongdai ancient landslide is about 8 m/s when it is sliding, and the results by the two methods are some different. Having considered the water influence during sliding, the results by the improved formula of vertical slice method is more close to the reality, which can enhance the accuracy of the sliding velocity calculation for reservoir landslides. This research has some important reference values to the sliding velocity analysis of reservoir landslides.

备注/Memo:: 收稿日期(Received date)：2012-03-10；改回日期(Accepted) : 2012-05-08。
基金项目（Foundation item）：广东省水利科技创新基金（2009-36）资助。\[ Supported by Guangdong Water Conservancy Science and Technology Innovation Fund (Grant No. 2009-36). \]
作者简介（Biography）：黄锦林（1971-），男，江西省赣县人，博士，教授级高级工程师，主要从事水利水电工程及防洪减灾研究工作。\[Huang Jinlin(1971)， male， come from Gan county， Jiangxi province，Ph d， professorlevel senior engineer， mainly engaged in water conservancy and hydropower engineering and the flood control and disaster reduction.\]E-mail：hjl@gdsky.com.cn