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), and the expression of V(x) was presented as Eq.(2) [17]. (2) where c......
on stability test for fully mechanized mining support with large mining height [C]//Proceedings of the Second International Symposium on Mining Technology, Jixi, Heilongjiang, China: Science Press, 2001: 246-251......
气石化,叶腊石化,高岭土化,碳酸盐化,钾化,其中硅化与成矿关系最为密切.根据矿脉穿插关系及矿物共生组合,矿石组构等特征,将大垄铅锌矿床成矿过程划分为3个阶段.1 石英-多金属硫化物阶段(Ⅰ):典型矿物组合为石英+闪锌矿+方铅矿±黄铁矿±黄铜矿,闪锌矿为棕褐色,呈浸染状,块状,条带状和细脉状产出.2 石英-黄铁矿-闪锌矿阶段(Ⅱ):以石英+黄铁矿+闪锌矿组合为标志,闪锌矿为浅黄色,呈浸染状,条带状和...科学与信息物理学院流体包裹体实验室进行,使用仪器为英国产Linkam THMS-600型地质用冷热台,仪器可操作的温度范围在-196~600 ℃之间.经校准,温度范围为-196~30 ℃时,精度为0.1 ℃；温度范围为30~600 ℃时,精度为1 ℃.本次实验主要通过显微冷热台测定了包裹体的均一温度,水溶液包裹体的冰点温度或二氧化碳络合物的熔化温度,利用BROWN[6]的FLINCOR计算机程序......
layout pattern was adopted; Figures 5(b) and 6(c) show that when the cutters are arranged on the cutter- head in a circumferential direction, they are restricted by many constraints. According......
, 2014, 47(6): 2225–2238. DOI: 10.1007/s00603-013-0528-y. [12] CARRANZA-TORRES C. Analytical and numerical study of the mechanics of rockbolt reinforcement around tunnels in rock masses [J]. Rock......
体或浸染状交代安山岩等火山岩中的角闪石,辉石和斜长石矿物(见图3(c))；或呈脉状交代岩石.蚀变强烈时方解石脉较宽,在矿带内经常可见碳酸盐类矿物组成的脉和硅化脉与矿石矿物伴生,碳酸盐化与矿化关系十分密切. 4) 黏土化.工作区内普遍存在,主要表现为岩石中长石蚀变成黏土矿物组合,蚀变后岩石呈土状,镜下矿物表现较脏,其经常与绢云母化伴生,黏土化之后难以辨别原岩矿物. 5) 绿泥石化.工作区内较为普遍...上升,SiO2质量分数减少；远矿蚀变多发生绿帘石化,绿泥石化,碳酸盐化；近矿蚀变围岩轻重稀土分馏最强,远矿蚀变围岩轻重稀土分馏减弱；近矿蚀变围岩主要富集U和Th等高场强元素,多强烈亏损Ba和Sr等大离子亲石元素,其中La,Ce,Sr,Nd,Zr,Sm和Y元素从近矿围岩中组分流失而在远矿围岩处相对富集,具备火山-次火山热液矿床地球化学与围岩蚀变特征. 关键词:东珺铅锌银矿床；质量平衡；围岩蚀变；标准......
of the edges easier. The crack opening was photographed before and after ICR treatment at a magnification of 50×. Figure 8(b) shows the side view of the original crack and Figure 8(c) shows the equivalent......
] CHEN Quan-yuan, LUO Zhou, HILLS C, XUE Gang, TYRER M. Precipitation of heavy metals from wastewater using simulated flue gas: Sequent additions of fly ash, lime and carbon dioxide[J]. Water Research......
加熔剂的形式脱除砷.KUCHARSKI[15]采用碳酸钠熔剂,通过控制铜液含氧量,熔剂加入时间等工艺条件,碳酸钠熔剂以喷入的形式添加到铜液中,砷以砷酸钠的形式从铜液中脱除.然而,阳极铜中钠含量过高,在后续的电解中会影响电解液的饱和度,进而影响电解铜的质量,因此,碳酸钠熔剂不建议大量多次的使用.此外,学者们也采用了碳酸钾,碳酸锂以及生石灰[16]作为熔剂脱除砷的技术,也具有较好的脱砷效果. 3... and radiochemical analysis[J]. Journal of Nuclear Materials, 2005, 345(1): 19-30. [36] KUO Y M, CHANG J E, JIN C H, et al. Vitrification for reclaiming spent alkaline batteries[J]. Waste Management, 2009, 29(7......
J. Cent. South Univ. (2020) 27: 3544-3566 DOI: https://doi.org/10.1007/s11771-020-4509-5 Numerical simulation research on response characteristics of surrounding rock for deep super-large section chamber under dynamic and static combined loading condition FAN De-yuan(范德源)1, LIU Xue-sheng(刘学生)1, 2,......
