纸质出版:2018
移动端阅览
[1]梁冰,王堃,姜利国,董擎,王俊光.尾砂压缩固结特性试验及e-P曲线模型分析研究[J].防灾减灾工程学报,2018,38(01):109-117.
梁冰, 王堃, 姜利国, et al. Experimental Research on Compressibility and Consolidation Characteristics of Tailings and e—P Curve Model Analysis[J]. 2018, 38(1): 109-117.
[1]梁冰,王堃,姜利国,董擎,王俊光.尾砂压缩固结特性试验及e-P曲线模型分析研究[J].防灾减灾工程学报,2018,38(01):109-117. DOI: 10.13409/j.cnki.jdpme.2018.01.015.
梁冰, 王堃, 姜利国, et al. Experimental Research on Compressibility and Consolidation Characteristics of Tailings and e—P Curve Model Analysis[J]. 2018, 38(1): 109-117. DOI: 10.13409/j.cnki.jdpme.2018.01.015.
为探索压实度K和含水率ω对铅锌尾砂压缩固结特性的影响
采用WG三联高压固结仪对铅锌尾砂开展了标准固结试验
基于修正后的e—P曲线分析模型来分析铅锌尾砂的压缩固结特性。结果表明:(1)压缩系数av1-2随K增大而减小。当ω<ωopt时
av1-2在0.0340.092 MPa-1间波动;当ω≥ωopt时
av1-2随ω增大而增大。ω≥15%时
尾砂属中压缩性土;ω<15%时
尾砂属低压缩性土。(2)固结系数Cv随K增大而降低
随ω增大而先增大后减小
ω=9%时Cv最大。(3)修正了e—P模型并优化模型参数
验证了模型的正确性与合理性。该研究结果为尾矿库(坝)的稳定性分析提供了试验和理论基础
为尾矿库的安全运行与回采利用提供科学依据。
To investigate the influence of bulk factor(K)and moisture content(ω)on the compressibility and consolidation characteristics of lead-zinc tailings
the WG triple high-pressure consolidation apparatus was adopted to carry out standard oedometer tests on lead-zinc tailings.The characteristics of compressibility and consolidation of lead-zinc tailings were analyzed based on the modified e—Pcurve analysis model.The results indicate that:(1)the compression coefficient av1-2 decreases as K increases.Whenω<ωopt
av1-2 fluctuates between 0.034 MPa-1 and0.092 MPa-1;Whenω≥ωopt
av1-2 increases asωincreases.Whenω≥15%
the tailings are categorized as compressible soil.Coefficient of consolidation Cvdecreases as Kincreases and with the increase ofω
it increases first and then reduce.Whenω=9%
Cvreaches maximum.The e—P model is modified and the model parameters are optimized.The correctness and rationality of the model is verified.The research results provide experimental and theoretical basis for stability analysis of tailings ponds
which provides a scientific reference for the safe operation and recycling of tailings ponds.
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