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process was accomplished. The results show that in three thickening test stages of mud bed height 25, 45 and 70 cm with the same rake shear ratio 15 r/min, the amount of aggregates diameter over 100 μm... diameter decreases as shear time mud bed height increases, and the aggregate densification accelerates with mud bed height rises. As the function of effective aggregate diameter, the effective hinder......
Effects of Lanthanum on Microbial Biomass Carbon andNitrogen in Red Soil 朱建国1,曾青1,李振高1,曹志洪1,谢祖彬1,褚海燕1 (1.Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences,) Abstract:The result of soil culture experiment shows that lanthanum has inhibitory effect on the microbial biomass C and N in red soil, and the inhibition is strengthened with increasing......
Influence of Exogenous Lanthanum on Fertility Parameters of Red Soil and Paddy Soil 朱建国1,曾青1,曹志洪1,张雅丽1,谢祖彬1,褚海燕1 (1.Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences,) Abstract:The effects of exogenous La on the fertility parameters such as cation exchange capacity (CEC), exchangeable basic cations, and exchangeable acidity in red soil......
一种新的自适应RED算法张士娟,孙金生摘 要:主动队列管理算法(RED)存在很多问题,如参数难以配置,对负载变化敏感等,为此采用控制理论的方法改进RED算法,提出一种基于比例控制的自适应RED算法,PRED.仿真结果表明该算法的稳定性好,队列的稳态值不受负载变化的影响.与已有的几种主动队列管理算法的性能比较表明,PRED算法的性能明显优于ARED,PI控制,DRED,SRED和REM几种算法.关键词:网络;拥塞控制;主动队列管理;控制理论;......
:1672-7207(2019)11-2773-10 Model on variable weight-target approaching for risk assessment of water and mud inrush in intrusive contact tunnels LI Zhaoyang1, 2, WANG Yingchao1, 2, LIU Yang2, JIAO Qinglei2...; Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China) Abstract: For the risk assessment of water and mud inrush in intrusive contact tunnels, a new model was proposed......
): 723-728. CHEN Changfu, ZHU Shimin, MAO Fengshan, et al. Characterization and modelling of coupled consolidation-creep behavior of red clay[J]. Journal of Engineering Geology, 2019, 27(4): 723-728. [17] 孙......
and the resistance coefficient calculation formula were derived in which the effect of creep was considered. To study the characteristics of surrounding rock strength of red sandstone in tunnel lining design,taking Shanghai-Kunming high-speed railway Diantangbian tunnel as a support project, the resistant coefficient of this red sandstone was calculated with or without creep effect. The results show......
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; 文章编号:1672-7207(2018)10-2533-12 Prevention structure assessment method against water and mud inrush in karst tunnels and its application HUANG Xin1, LIN Peng1, XU Zhenhao1, 2, 3... assessment method(PSAM) against water and mud inrush in karst tunnels was proposed through statistical and theoretical analyses based on disaster sources and prevention structure of water and mud inrush......
