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干法赤泥堆场蒸发能力计算与分析 被引量:2
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作者 田跃 《轻金属》 CSCD 北大核心 2009年第11期17-22,共6页
为了减少环境污染,改赤泥湿法堆存为干法堆存,将是今后新建和改、扩建赤泥堆场的主要发展方向。控制赤泥的含水量,使赤泥能像堆土一样自堆积起来,是干法堆存的关键,也是干法赤泥堆场设计的技术关键。目前我国干法赤泥堆场的设计经验和... 为了减少环境污染,改赤泥湿法堆存为干法堆存,将是今后新建和改、扩建赤泥堆场的主要发展方向。控制赤泥的含水量,使赤泥能像堆土一样自堆积起来,是干法堆存的关键,也是干法赤泥堆场设计的技术关键。目前我国干法赤泥堆场的设计经验和资料很少,本文作者根据设计实践,提出综合气象条件,从堆场蒸发量和赤泥界限含水量两方面着手,解决干堆赤泥的设计问题。文章用大量的数据介绍了赤泥的力学状态与含水量之间的关系,分析了气候对赤泥的影响,研究了堆场蒸发能力与赤泥堆积能力之间的关系,给出了评价干法赤泥堆场堆积能力的方法。 展开更多
关键词 赤泥堆场 干法设计 堆积能力 赤泥含水量 气象条件
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Improved plane layout of stabilizing piles based on the piecewise function expression of the irregular driving force 被引量:3
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作者 LIU Wen-qiang LI Qun +3 位作者 LU Jian LI Chang-dong YAO Wen-min ZENG Jiang-bo 《Journal of Mountain Science》 SCIE CSCD 2018年第4期871-881,共11页
The paper presents an improved plane layout for stabilizing piles based on a proposed piecewise function expression for the irregular driving force. Based on the specific morphological characteristics of a highway lan... The paper presents an improved plane layout for stabilizing piles based on a proposed piecewise function expression for the irregular driving force. Based on the specific morphological characteristics of a highway landslide, the piecewise function is used to calculate the irregular driving force by dividing the landslide into several sub-areas.Furthermore, the reasonable layout range and pile spacing can be obtained based on the piecewise function expression of the irregular driving force and on relevant research results of the plane layout for stabilizing piles. Therefore, an improved plane layout of stabilizing piles is presented in consideration of a piecewise function expression of the irregular driving force. A highway landslide located in eastern Guizhou Province, China, is analyzed as a case study using the proposed method. The results demonstrate that the theory presented in this paper provides improved economic benefits and can reduce the requirednumber of stabilizing piles by 28.6% compared with the conventional plane layout scheme. 展开更多
关键词 Highway landslide Driving force Piecewise function Stabilizing pile Plane layout
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Glass formation,thermal and mechanical properties of ZrCuAlNi bulk metallic glasses 被引量:1
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作者 C.E.BORJA I.A.FIGUEROA +3 位作者 O.LOZADA-FLORES M.ESTRADA G.A.LARA-RODRIGUEZ J.A.VERDUZCO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第6期1157-1165,共9页
The glass forming ability, thermal and mechanical properties of some Zr Cu Al Ni bulk metallic glasses were analyzed. The compositions of the alloys were theoretically determined with the dense packing and kinetic fra... The glass forming ability, thermal and mechanical properties of some Zr Cu Al Ni bulk metallic glasses were analyzed. The compositions of the alloys were theoretically determined with the dense packing and kinetic fragility index models. Cylindrical and conical ingots were produced by copper mould suction-casting under Ar atmosphere. The conical ingots were characterized by means of X-ray diffraction in order to determine the glassy structure. It was found that both alloys have a critical glassy diameter, Dc, of 3 mm. Thermal behaviours were investigated by differential scanning calorimetry at heating rates of 0.5, 0.67 and 0.83 K/s. The gamma parameter γ, supercooled liquid region ΔTx, and reduced glass transition temperature Trg, of the experimentally obtained glasses indicated high glass forming ability. The glassy compositions showed a fragility index of ~40 GPa. The compression test of the investigated alloys was carried out at a strain rate of 0.016 s^-1, obtaining a elastic modulus of ~83 GPa, total deformation of ~5%, yield strength of 1.6 GPa and hardness of 4 GPa. It was concluded that the use of the dense packing and kinetic fragility index models helped to predict glass-forming compositions in the family alloy investigated. 展开更多
关键词 bulk metallic glass glass formation ability fragility index packing efficiency suction casting
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玩沙、捡石去!
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《科幻世界画刊(小牛顿)》 2009年第6期48-53,共6页
相信你一定曾在海边玩过沙或在河边捡过石头吧,而你是不是曾想过,为什么海边有些地方都是大石头,有些地方却是小石头或泥沙?其实这和河流的侵蚀、搬运、堆积能力有很大关系。想知道更多吗?那就让我们来做些实验吧。
关键词 石头 实验 河流 侵蚀 搬运 堆积能力
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