沟槽弯度对尾矿库溃决矿浆运动特性影响研究

doi:10.16265/j.cnki.issn1003-3033.2020.02.009

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (2): 54-59.doi: 10.16265/j.cnki.issn1003-3033.2020.02.009

沟槽弯度对尾矿库溃决矿浆运动特性影响研究

刘克辉¹ 实验师, 吴冬明^**1, 蔡海¹, 敬小非¹ 教授, 李开放², 康钦容³

1.重庆科技学院安全工程学院,重庆 401331;
2.西南油气田分公司重庆气矿垫江作业区,重庆 408300;
3.武汉工程大学兴发矿业学院,湖北武汉 430074

收稿日期:2019-11-23 修回日期:2020-01-09 出版日期:2020-02-28 发布日期:2021-01-25
通讯作者: **吴冬明(1994—),男,河南信阳人,硕士研究生,研究方向为边坡和尾矿库等地质灾害。E-mail:1004065602@qq.com。
作者简介:刘克辉(1974—),女,四川内江人,硕士,实验师,主要从事地质灾害和矿山安全等方面的研究。E-mail:99531792@qq.com。
基金资助:
国家自然科学基金资助(51974051,51804222);重庆市基础与前沿研究计划项目(cstc2018jcyjAX0231);重庆科技学院项目(ckhqzz2008005,ZZSB2019013);重庆科技学院安全工程学院科技创新项目(YKJCX1820703,YKJCX1820704)。

Study on influence of groove curvature on movement characteristics of slurry in tailing dam collapse

LIU Kehui¹, WU Dongming¹, CAI Hai¹, JING Xiaofei¹, LI Kaifang², KANG Qinrong³

1. College of Safety Engineering, Chongqing University of Science & Technology, Chongqing 401331, China;
2. Chongqing Gas Field Dianjiang Operation Area, Southwest Oil and Gas Field Branch, Chongqing 408300, China;
3. Xingfa School of Mining Engineering, Wuhan University of Technology, Wuhan Hubei 430074, China

Received:2019-11-23 Revised:2020-01-09 Online:2020-02-28 Published:2021-01-25

摘要/Abstract

摘要： 为研究尾矿库溃坝发生后,下游沟槽弯曲度对尾矿库溃决矿浆运动特性的影响,采用自主研发的尾矿坝溃决物理模型试验装置,模拟不同沟槽弯曲度下(30、60、90°)尾矿坝溃决过程,并开展试验,分析溃决矿浆沿程淹没高程、冲击力及流速变化。结果表明:增大沟槽弯曲度,弯曲断面处矿浆淹没高程增加,且高程整体趋势为“小-大-小”,呈非线性增加;矿浆流经弯道后,矿浆冲击力在弯曲断面处均呈“断崖式”减小,且沟槽弯曲度越大,减小值越大;矿浆流速与沟槽弯度大小呈负相关性,且弯曲度越大,过弯后流速越小。

关键词: 尾矿坝溃决, 矿浆运动, 沟槽弯曲度, 运动特性, 相似模拟试验

Abstract: In order to study influence of groove curvature in lower reaches on slurry's movement characteristics after tailing dam break, dam break process was simulated and experimented at different bending degrees (30, 60, 90°) of grooves by adopting independently developed physical model test device, and changes of submerged elevation, impact force and flow velocity of outburst slurry were analyzed. The results show that when groove curvature increases, submerged elevation of slurry at curved section will increase non-linearly in an overall "small-large-small" trend. After slurry flows through bend, its impact force will decrease in a "cliff-like" form at bending section, and the larger bending degree is, the larger reduction will be. Flow velocity of slurry is negatively correlated with groove curvature, and the larger curvature is, the smaller it will be after the bend.

Key words: tailing dam break, slurry movement, groove curvature, movement characteristics, similarity simulation test

中图分类号:

X936

刘克辉, 吴冬明, 蔡海, 敬小非, 李开放, 康钦容. 沟槽弯度对尾矿库溃决矿浆运动特性影响研究[J]. 中国安全科学学报, 2020, 30(2): 54-59.

LIU Kehui, WU Dongming, CAI Hai, JING Xiaofei, LI Kaifang, KANG Qinrong. Study on influence of groove curvature on movement characteristics of slurry in tailing dam collapse[J]. China Safety Science Journal, 2020, 30(2): 54-59.

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沟槽弯度对尾矿库溃决矿浆运动特性影响研究

Study on influence of groove curvature on movement characteristics of slurry in tailing dam collapse

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