基于大型物理模型试验的高位滑坡涌浪坝面爬高时空分布特征分析  

Spatial and Temporal Distribution Analysis of Surge Dam Face Climb Induced by High-Landslide Based on the Large-Scale Physical Model Experiment

作　　者：张洋洋 冯业林 陈世壮 易魁 黄青富 汪华晨 王环玲[1,2] ZHANG Yangyang;FENG Yelin;CHEN Shizhuang;YI Kui;HUANG Qingfu;WANG Huachen;WANG Huanling(Geotechnical Research Institute,Hohai University,Nanjing 210098,China;Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China;PowerChina,Kunming Engineering Corporation Limited,Kunming 650051,China;Huaneng Lancang River Hydripower Inc.,Kunming 650214,China)

机构地区：[1]河海大学岩土工程科学研究所,南京210098 [2]河海大学岩土力学与堤坝工程教育部重点实验室,南京210098 [3]中国电建集团昆明勘测设计研究院有限公司,昆明650051 [4]华能澜沧江水电股份有限公司,昆明650214

出　　处：《三峡大学学报（自然科学版）》2024年第2期15-20,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金重点项目(51939004);云南省重大科技专项计划项目(202202AF080004);中国华能集团有限公司科技项目(HNKJ22-H107);国家重点研发计划项目(2017YFC1501100)。

摘　　要：对库坝区高位滑坡涌浪坝面爬高的时空分布特征研究是大坝工程设计和工程安全的重要课题.本文针对澜沧江GS水电站梅里石H_(3)滑坡开展了大型三维物理模型试验,探究了不同滑体方量和弗劳德数下涌浪坝面爬高时空分布特征.研究结果表明,坝面上各测点涌浪爬高的首波波形具有一致性,波动周期也基本相同,但在次波之后波形发生改变并出现较大差异.通过多元线性回归分析,对滑体方量、弗劳德数与滑坡涌浪坝面爬高之间的关系进行经验拟合.通过坝面涌浪爬高公式的逆推,确定了坝前首浪入射角度,并将计算结果与试验资料对比,进而确定了坝面首浪入射方向.滑坡涌浪的坝面爬高存在相异性的特点,位于首浪入射方向上的测点坝面爬高高于偏离首浪入射方向的测点坝面爬高,且首波入射角度越大,坝面爬高相异性越不明显.The study on spatial and temporal distribution characteristics of high landslide surge dam face climb in reservoir dam area is an important project for dam engineering design and engineering safety.In this paper,a large-scale three-dimensional physical model test was carried out for Meilishi H_(3)landslide in GS hydropower station,Lancangjiang.The spatial and temporal distribution characteristics of the surge cresting height at different landslide volume and Froude number were investigated in depth.The results of the study show that,the first waveforms of the surge climb at each measurement point on the dam face are consistent and the fluctuation periods are basically the same,while the waveforms change a lot after the first wave.The relationship among the slide volume,Froude number,and landslide surge height above the dam face is empirically fitted by multiple linear regression analysis.The angle of incidence of the first wave in front of the dam is determined by inverse extrapolation of the dam face surge climb equation,and the calculation results are compared with the test data to determine the direction of incidence of the first wave at the dam face.The dam face climb height of landslide surge is characterized by phase anisotropy.The dam face climb height of the measurement point located on the first wave incidence direction is higher than that deviated from the first wave incidence direction.The larger the angle of the first wave incidence is,the less obvious the phase anisotropy of the dam face climb height is.

关 键 词：滑坡涌浪 物理模型试验 时空分布特征 坝面爬高相异性 首浪入射方向 

分 类 号：P642.2[天文地球—工程地质学]