摘要
分析了浆体的物理特性和输送装置特性,应用非线性优化方法,在已知泵的配置、输送浓度与管材的条件下,以输送每立方米土所用费用单价的最小值作为目标函数,以浆体的悬浮性和整个浆体输送系统的工作点等作为主要约束条件,建立了浆体输送管道的管径优化数学模型。费用单价为年费用与年输送量的比率,年费用着重考虑了与管道直径密切相关的管道材料年折算费用和年泵站运行费用。数值计算得到的最优管径为0.8957m,管内流量为3.134m3/s,管道的最终厚度为2.6×10-3m。与多方案优选法管径计算结果0.9m相比,所述方法的计算结果准确,计算量小。
In terms of nonlinear optimization method, this paper presented a mathematical model with respect to the diameter optimal design for slurry transportation pipeline. In the condition that pumps configuration, slurry concentration and pipeline material were known, the minimum of unit price per cubic meter of transporting earth was taken as objective function. In the model, unit price was equal to the ratio of annual expenditure to annual transport quantity. For the annual expenditure, the annual cost of pipeline material and the annual operation cost of pumps were considered, which had a close relation to the pipe diameter. Based on detailed analysis of the physical property of slurry and the characteristic curve of transport equipment, the suspension property of slurry and the operating point of whole transportation system were taken as mainly constraint conditions. The numerical-computational results show that the optimal diameter and the flow of the pipe and the final value of the pipe thickness equal 0. 895 7 m, 3. 134 m3/s and 2. 6×10 -3 m respectively, compared with the computational diameter 0.9 m of multi-scheme optimization method, the diameter is more accurate.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2005年第2期61-64,共4页
Journal of Traffic and Transportation Engineering
关键词
管道运输
管径设计
非线性优化
浆体输送
Computational methods
Costs
Mathematical models
Optimization
Pumps
