地震作用下尾矿库溃坝过程模型试验及加固方案

doi:10.16265/j.cnki.issn1003-3033.2017.02.017

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (2): 92-97.doi: 10.16265/j.cnki.issn1003-3033.2017.02.017

地震作用下尾矿库溃坝过程模型试验及加固方案

金佳旭¹ 讲师, 崔红志¹, 梁冰² 教授, 周克林², 冀文明^3,4 高级工程师

1 辽宁工程技术大学土木与交通学院,辽宁阜新 123000
2 辽宁工程技术大学力学与工程学院,辽宁阜新 123000
3 辽宁工程技术大学矿业学院,辽宁阜新 123000
4 内蒙古自治区安全生产监督管理局,内蒙古呼和浩特 010010

收稿日期:2016-11-21 修回日期:2017-01-07 出版日期:2017-02-28 发布日期:2020-11-22
作者简介:金佳旭 (1984—),男,辽宁阜新人,工学博士,讲师,主要从事尾矿库安全与环境方面的研究。E-mail:jjx_605@163.com。
崔红志 (1993—),男,安徽芜湖人,硕士研究生,主要研究方向为尾矿库安全与环境。E-mail:hzcui2016337@163.com。
基金资助:
国家自然科学基金青年基金资助(51504123);辽宁省教育厅一般项目(L2015211)。

Model-based study on collapse of tailing sreservoir dam under earthquake action and reinforcement scheme

JIN Jiaxu¹, CUI Hongzhi¹, LIANG Bing², ZHOU Kelin², JI Wenming^3,4

1 School of Civil Engineering and Transportation, Liaoning Technical University, Fuxin Liaoning 123000, China
2 School of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China
3 School of Mine, Liaoning Technicial University, Fuxin Liaoning 123000, China
4 Administration of Work Safety of Inner Mongolia Autonomous Region, Huhhot Inner Mongolia 010010, China

Received:2016-11-21 Revised:2017-01-07 Online:2017-02-28 Published:2020-11-22

摘要/Abstract

摘要： 为研究地震作用下一般尾矿库的动力特性及破坏规律,探寻坝体加固方法,开展尾矿库概化模型振动台试验。由振动台提供水平动力,利用加速度传感器、激光位移传感器、动态数据采集系统及高速相机等设备获取坝顶加速度、位移及变形数据,分析尾矿库溃坝原因,提出坝体加固方案。试验结果表明,受地震荷载作用的尾矿坝,在坝体坡面2/3处出现“抛掷”现象;加速度放大系数随坝体高程变化不明显,随峰值加速度增加而递减;当峰值加速度达到0.4 g时,尾矿库经历液化、滑移、开裂,最终导致溃坝;溃坝后的泥浆沿下游不断演进直至停滞,堆积形态呈三角形;在坝底打抗滑桩加固能提高坝体的稳定性。

关键词: 尾矿库, 地震, 溃坝, 振动台, 模型试验, 加固

Abstract: In order to study the dynamic characteristics and failure law of general tailings reserviors under earthquake action, and explore the method of dam reinforcement, model-based experiments were carried out by using a shaking table. Data on crest acceleration, displacement and deformation were collected by accelerometers, laser displacement sensors,a dynamic data acquisition system and a high speed camera. The results show that there is a “throwing” phenomenon in the two-thirds of dam slope under seismic load,that the acceleration amplification coefficient is not affected significantly by the elevation of the dam, and decreases with the increase of the peak acceleration, that when the input peak acceleration reaches 0.4 g, the tailing reservoir undergoes liquefaction, slipping and cracking, which eventually leads to dam-break,that after the breaking, the mud continuously evolves along the downstream until stagnation, and the accumulation is triangular,and that the tailings reserviors dams' stability can be improved obviously by driving anti-slide piles into the earth at the dam bottoms.

Key words: tailings reservoir, earthquake, dam-break, shaking table, model test, reinforcement

中图分类号:

X936

金佳旭, 崔红志, 梁冰, 周克林, 冀文明. 地震作用下尾矿库溃坝过程模型试验及加固方案[J]. 中国安全科学学报, 2017, 27(2): 92-97.

JIN Jiaxu , CUI Hongzhi , LIANG Bing , ZHOU Kelin , JI Wenming. Model-based study on collapse of tailing sreservoir dam under earthquake action and reinforcement scheme[J]. China Safety Science Journal, 2017, 27(2): 92-97.

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地震作用下尾矿库溃坝过程模型试验及加固方案

Model-based study on collapse of tailing sreservoir dam under earthquake action and reinforcement scheme

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