Macro-micro Evolution Characteristic Function of Solidified Loess under the Effects of Dry-wet Cycles [PDF]
[Objective] To reveal the durability of solidified loess slope protection in long-term service. [Methods] Under the condition of dry-wet cycles, direct shear, permeability mechanical tests of solidified loess were carried out to study the evolution law ...
CHANG Zhou +6 more
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Calculation method of dewatering settlement in saturated loess stratum [PDF]
In the construction of underground engineering with complex surrounding environment, reasonable prediction and evaluation of the influence of precipitation on the surrounding environment is a key problem to control the feasibility of the project.
Guohua DENG +4 more
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Correlation between soil-water characteristic curve and collapsibility in undisturbed loess [PDF]
This study investigates the correlation between the soil-water characteristic curve (SWCC) of undisturbed loess and its collapsibility. Undisturbed loess soil samples, obtained from depths up to 30 meters below the surface in Chang’an District, Xi’an ...
Haiman WANG +3 more
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Experiment and modeling of soil-water characteristic curve of unsaturated residual soil [PDF]
, 2014 土-水特征曲线是指基质吸力与含水率或饱和度的关系曲线。土-水特征及其相关数学模型可用于非饱和土性质如渗透系数和抗剪强度模型的建立。通常,土-水特征曲线仅有脱湿曲线。笔者详细讨论了初始含水率、干密度、竖向应力及干湿循环对脱湿曲线的影响。采用滤纸法测试了厦门地区残积土的土-水特征曲线(SWCC)及滞回环。结果表明,初始含水率对SWCC影响较小,最优含水率干侧试样SWCC的进气值小,滞回环小;湿侧试样的进气值大,滞回环大;最优含水率试样的滞回环居中。初始干密度对SWCC有显著影响,低干密度试样SWCC进气值小,
陈东霞, 龚晓南
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, 2010 深海表层海泥车辆地面力学特性是开发大洋矿产资源-多金属结核采矿车的理论基础。该文深入研究深海表层海泥样品和陆地二种膨润土的物理性质,确定深海表层模拟海泥的原料,分析深海表层海泥和模拟海泥的物理力学参数,配制出具有极高含水量、极小内摩擦角、高液限、高塑性、大孔隙比、低强度和低重度等深海表层海泥特性的模拟海泥,根据车辆地面力学理论,开展多种平板在垂直方向上的海泥载荷-沉陷实验和不同节距、不同齿高、不同齿形和不同齿宽的履带齿板在水平力作用下的海泥剪切应力-位移实验,深入分析实验数据 ...
李力, 李庶林
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Preparation of high-density iron soft magnetic materials by HVC technology [PDF]
, 2016 High density green compacts of annealed iron powder with a density of 7.70 g·cm-3 were prepared by high velocity compaction(HVC) combined with powder annealing.
DONG Guo-qiang +5 more
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Effect of Supercritical Carbon Dioxide (SCCO2) on the mechanism of change in pore and fracture structure of coal with different moisture content [PDF]
When the CO2 in a supercritical state (SCCO2) is released from deep coal seams, it reacts with minerals in coal, changing the porosity of coal, which in turn affects the effect of CO2 sequestration in coal seams and the effect of increasing methane ...
Lei HAN +4 more
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Experimental study on optimizing ratio of EICP solution to reinforce red mudstone filler based on response surface method [PDF]
In order to explore the effects and mechanisms of the urease-induced calcium carbonate precipitation (EICP) technology on the solidification of red mudstone fillers, urease is extracted from soybean, and the ratio of EICP solution is optimized by the ...
YU Yunyan, GUO Qiuyue, CUI Wenhao, DING Xiaogang, DU Qianzhong, QI Guobin
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, 2018 甲醇重整制氢微反应器是一种实现高效氢燃料电池的在线供氢的有效方法。该文以切削加工的铜纤维为原材料,结合低温固相烧结技术,制造形成具有渐变孔隙率结构作为催化剂载体的新型多孔铜纤维烧结板(PCFSS),采用两层浸渍方法负载Cu/Zn/Al/Zr四元体系催化剂。用扫描电镜(SEM)进行微观形貌分析。改变反应空速(GHSV)和反应温度,对几种不同孔隙率结构的微反应器,测试分析了制氢性能。结果表明:相比于80%的均匀孔隙率多孔铜纤维烧结板,以进口端到出口端孔隙率为90%~70 ...
俞炜 +4 more
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Distribution characteristic and formation process of bubbles in foaming slag in a converter [PDF]
, 2016 Foaming slags at the top at the beginning of deslaggging, in the lower portion at the end of deslagging, and at the bottom after deslagging were taken with a sample scoop at the end of dephosphorization in the converter slag-remaining and double-slag ...
BAO Yan-ping, LI Xiang, LIN Lu, WANG Min
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