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中南大学学报(自然科学版)

Journal of Central South University

第49卷    第10期    总第290期    2018年10月

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文章编号:1672-7207(2018)10-2561-07
基于流体动力学的膏体料浆动水压力研究
张爱卿1,吴爱祥1,王贻明1,王洪江1,尹升华1,王正英2

(1. 北京科技大学 土木与资源工程学院,北京,100083;
2. 临沂会宝岭铁矿有限公司,山东 临沂,277712
)

摘 要: 基于流体动力学,借鉴泥石流冲击力的研究成果,建立膏体料浆动水压力力学模型,以某膏体充填矿房为工程实例,开展膏体料浆对充填挡墙作用力的现场监测试验,分析膏体料浆动水压力的变化规律。研究结果表明:假定膏体料浆可稳定流动,当膏体料浆的密度和浓度一定时,塑性黏度不变,膏体料浆的平均流速与阻力坡降和膏体料浆高度的幂呈正相关,膏体料浆动水压力与阻力坡降的幂和膏体料浆高度的4次幂呈正相关;固结作用对膏体料浆动水压力有较大的影响,现场试验三期充填过程中,二期充填时膏体料浆动水压力对充填挡墙作用十分显著,距充填挡墙底部2/3处最大动水压力超过最大静水压力。

 

关键字: 动水压力;膏体料浆;力学模型;动力学;充填挡墙

Study on hydrodynamic pressure of paste slurry based on fluid dynamics
ZHANG Aiqing1, WU Aixiang1, WANG Yiming1, WANG Hongjiang1, YIN Shenghua1, WANG Zhengying2

1. School of civil and resource engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Linyi Huibaoling Iron Ore Co., Ltd., Linyi 277712, China

Abstract:Based on fluid dynamics and the research achievements of debris flow impact, paste slurry formula of hydrodynamic pressure was established. Using a room of paste filling mining as an engineering example, the monitoring test of the paste of filling slurry retaining wall force field was conducted, and the hydrodynamic pressure change rule was analyzed and the correctness of the theoretical formula was verified. The results show that with the assumption that paste slurry can steadily flow, when the density and the concentration of the paste slurry are certain, plastic viscosity is constant, and the average flow velocity and resistance of paste slurry grade and paste slurry high power are positively correlated, paste slurry hydrodynamic pressure and resistance grade power and four times the height of power of paste slurry are positively correlated. Consolidation effect has a great influence on the hydrodynamic pressure of the paste slurry, field test three times in the filling process, the secondary when filling paste slurry hydrodynamic pressure on retaining wall filling effect is very significant, is apart from the pack at the bottom of the retaining wall, the maximum dynamic water pressure value more than 2/3 of the maximum hydrostatic pressure, verify the correctness and rationality of theoretical formula.

 

Key words: hydrodynamic pressure; paste slurry; mechanical model; dynamics; filling retaining wall

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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