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| 消力池底板块的失稳破坏机理及其防护措施 | |
| 引用本文： | 刘沛清,刘心爱,李福田.消力池底板块的失稳破坏机理及其防护措施[J].水利学报,2001,32(9):0001-0010. |
| 作者姓名： | 刘沛清 刘心爱 李福田 |
| 作者单位： | 1. 北京航空航天大学流体所 2. 中国水利水电科学研究院水利部 3. 中国水利水电科学研究院 |
| 摘 要： | 本文根据国内外一些高坝消力池和水垫塘失事破坏的调查资料，说明了脉动压力在引起破坏中的作用。从理论上分析了脉动压力的基本特征及其分布规律、板块上脉动上举力的产生机理，论证了脉动上举力是导致消力池底板揭底破坏的主要原因。论述了合理设置止水设施、排水设施以及锚固措施等对防止破坏的效果，讨论了计入脉动荷载的底板块稳定性设计准则，提供了消力池底板块的设计和防护参数。 |
| 关 键 词： | 消力池 底板块 设计准则 |
| 文章编号： | 0559-9350(2001)09-0001-09 |
| 修稿时间： | 2000年8月7日 |
Failure mechanism of bottom plate in stilling basin and countermeasure for protection |
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| LIU Pei-qing,LIU Xin-ai,LI Fu-tian.Failure mechanism of bottom plate in stilling basin and countermeasure for protection[J].Journal of Hydraulic Engineering,2001,32(9):0001-0010. | |
| Authors: | LIU Pei-qing LIU Xin-ai LI Fu-tian |
| Affiliation: | 1.Beijing University of Aeronautics and Astronautics; 2.Ministry of Water Resources; 3.China Institute of Water Resources and Hydropower Research |
| Abstract: | Based on the case study of stilling basin failure happened to several high dams, the important role of pressure fluctuation in causing failure is demonstrated. The basic characteristic and distribution of pressure fluctuation acting on the plate and formation of uplift force are theoretically analyzed to explain the effect of pressure fluctuation. Water stop, drainage system and anchoring are recommended as countermeasure to prevent the floor from uplifted. The design criterion of stilling basin floor referring to pressure fluctuation is proposed. |
| Keywords: | stilling basin plate design criterion |
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