Mechanisms of Interaction Between an Arch Dam and Abutment Slope Using Physical Model Tests
Mechanisms of Interaction Between an Arch Dam and Abutment Slope Using Physical Model Tests
复制标题
利用物理模型试验研究拱坝与坝肩坡相互作用的机制
DOI：
10.1007/s00603-017-1321-0
复制
发表时间：
2018-08
影响因子：
6.2
通讯作者：
Zheng Hong
中科院分区：
文献类型：
--
作者：
Sun Guanhua;Lin Shan;Cheng Shengguo;Sui Tan;Li Chunguang;Zheng Hong
在西南地区，大型水电工程中高陡边坡的稳定性问题已成为制约建设和运行安全的关键技术难题。通过物理模型试验研究了拱坝在施工阶段、蓄水阶段和结构面强度弱化阶段与坝肩边坡相互作用的机理。(1)在开挖阶段，前期开挖对巨型岩块影响显著，后期开挖影响相对较小。(2)在蓄水阶段，坝基承受水力荷载。因此，巨大的岩块在拱拱推力作用下远离边坡。(3)在结构面强度弱化阶段，结构面两侧发生相对位移，块状岩块发生轻微滑移。坝体应变与正常蓄水阶段略有不同。下游平面大部分处于张拉状态，说明左岸坝肩基岩强度下降，导致坝体向山体、河床和坝顶顶部变形。
In southwestern China, the stability of high-steep slopes in large-scale hydropower projects has become a key technical challenge that constrains the safety of construction and operation. Based on a geological survey of the large-scale rock block in the Jinping-I Hydropower Station left bank, the entire system of the dam and its abutment slope is defined as the study subject. The mechanisms of interaction between the arch dam and the abutment slope during the construction stage, the impoundment stage and the structural plane strength-weakening stage are investigated using physical model tests. (1) During the excavation stage, the early-stage excavation has a significant impact on the huge rock block, whereas the impact of later-stage excavation is relatively small. (2) During the impoundment stage, the dam foundation is under hydraulic load. Therefore, the huge rock block moves away from the slope due to the arch thrust. (3) During the structural plane strength-weakening stage, both sides of the structural planes develop a relative displacement, and the massive rock block slips slightly. Moreover, the strain of the dam is slightly different from the situation in the normal impoundment stage. The majority of the downstream plane is under tension, indicating that a decline in the bedrock strength of the left bank dam abutment results in deformation of the dam towards the mountain body, the riverbed and the top part of the dam crest.
登录
查看更多内容
影响因子：
2.8
作者：
N. Xu;F. Dai;Zhong Zhou;Pengxiang Jiang;T. Zhao
通讯作者：
N. Xu;F. Dai;Zhong Zhou;Pengxiang Jiang;T. Zhao
DOI：
10.1016/s1365-1609(03)00055-8
发表时间：
2003-07
影响因子：
7.2
作者：
Jian Liu;Xiating Feng;X. Ding;J. Zhang;Deng-Ming Yue
通讯作者：
Jian Liu;Xiating Feng;X. Ding;J. Zhang;Deng-Ming Yue
影响因子：
5.5
作者：
S. Oliveira;R. Faria
通讯作者：
S. Oliveira;R. Faria
DOI：
--
发表时间：
2010
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Chang Qiang
通讯作者：
Chang Qiang
锦屏一级水电站岩质边坡关键块体理论及应用中超静定块体稳定性分析
影响因子：
7.4
作者：
Guanhua Sun;Hong Zheng;Yaoying Huang
通讯作者：
Yaoying Huang