基于瞬时流的库水变幅对岸坡稳定性的影响研究

杨家城 宋彦辉

杨家城, 宋彦辉. 2018: 基于瞬时流的库水变幅对岸坡稳定性的影响研究. 工程地质学报, 26(s1): 665-671. doi: 10.13544/j.cnki.jeg.2018206
引用本文: 杨家城, 宋彦辉. 2018: 基于瞬时流的库水变幅对岸坡稳定性的影响研究. 工程地质学报, 26(s1): 665-671. doi: 10.13544/j.cnki.jeg.2018206
YANG Jiacheng, SONG Yanhui. 2018: STUDY ON THE INFLUENCE OF RESERVOIR WATER FLUCTUATION ON BANK SLOPE STABILITY BASED ON TRANSIENT FLOW. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 665-671. doi: 10.13544/j.cnki.jeg.2018206
Citation: YANG Jiacheng, SONG Yanhui. 2018: STUDY ON THE INFLUENCE OF RESERVOIR WATER FLUCTUATION ON BANK SLOPE STABILITY BASED ON TRANSIENT FLOW. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 665-671. doi: 10.13544/j.cnki.jeg.2018206

基于瞬时流的库水变幅对岸坡稳定性的影响研究

doi: 10.13544/j.cnki.jeg.2018206
基金项目: 

中国电建集团西北勘测设计研究院有限公司项目(镇安抽水蓄能电站工程边坡稳定性研究)资助

详细信息
    作者简介:

    杨家城(1995-),男,硕士生,主要从事岩土加固与测试及地质灾害防治研究.Email:759086857@qq.com

    通讯作者:

    宋彦辉(1968-),男,博士,教授,博士生导师,主要从事地质工程教学与研究工作.Email:dcdgx30@chd.edu.cn

  • 中图分类号: TU411.92

STUDY ON THE INFLUENCE OF RESERVOIR WATER FLUCTUATION ON BANK SLOPE STABILITY BASED ON TRANSIENT FLOW

  • 摘要: 库岸边坡发生失稳破坏大多与库水变幅有关,为了有效指导岸坡设计和防治工作,本文以陕西镇安抽水蓄能电站上库区一边坡为研究对象,利用Rocscience Phase2有限元软件,基于瞬时流模拟库水快速升降时坡体内渗流-应力耦合场,并采用SSR自定义搜索功能对迎水坡和背水坡分别计算稳定性后发现:在水位升降速度不变的条件下,当水位上升时,背水坡的安全系数持续减小,而迎水坡的安全系数先减小后增大,但两侧坡体均未发生破坏;当水位下降时,背水坡安全系数同样持续减小,但未发生破坏,迎水坡的安全系数也在持续减小,但在水位下降19 m时骤减,最终破坏。在水位升降幅度不变的条件下,当升降速度变化时,背水坡安全系数基本没有变化;当水位上升速度增大时,迎水坡安全系数逐渐增大,当水位下降速度增大时,迎水坡安全系数逐渐减小。建议水库运营时,库水下降幅度不宜超过18m;若要满足发电量要求并确保边坡不会发生失稳破坏,可将正常蓄水位抬升12m后进行发电。
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出版历程
  • 收稿日期:  2018-06-01
  • 修回日期:  2018-07-18
  • 刊出日期:  2018-10-31

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