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输入完成后,监测点位移与震前相比增加了0.5~1.0 cm.各个监测点的位移时程曲线间的差异主要体现在波动幅值上,主厂房边墙B和C处位移波动幅值较小,与主厂房顶拱A处的最大位移差达到1.6 cm,表明主厂房衬砌结构有较大相对变形;主变洞3个监测点位移幅值均较大,但相互之间的差值较小,说明主变洞衬砌结构主要是整体变形. 混凝土材料抗拉强度远小于抗压强度,因此拉裂破坏是混凝土材料常见的破坏形式.取......
粒石英集合体呈脉状或团粒状集合体交代岩石,或沿岩石裂隙充填交代岩石.硅化后使岩石颜色变浅,硬度变大.硅化强烈时,可见几乎全由石英构成的硅化脉,经常可见其与碳酸盐化,绢云母化等蚀变共同出现(见图3(a)). 2) 绢云母化.蚀变作用普遍,主要表现为岩石中的长石蚀变为绢云母,绢云母呈细小鳞片状定向排列(见图3(b)).经常与硅化和黏土化相伴生. 3) 碳酸盐化.主要表现为方解石等碳酸盐类矿物呈粒状集合...Al2O3作为惰性矿物进行计算. 4.2 计算结果分析 元素分析测试工作在澳实矿物分析检测(广州)有限公司完成.主量元素采用硼酸锂熔融,X线荧光光谱分析法测定,检出限为0.01%.不同岩层主量元素质量分数测试结果见表2.微量元素采用四酸消解,质谱/光谱仪综合分析法测定,检出限为0.01 μg/g.不同岩层微量元素质量分数测试结果见表3.稀土元素采用硼酸锂熔融,采用等离子质谱定量法测定......
; (37) where A, C, D and E are reactants, G and H are products, B is inert gas, and F is a by-product. As a complex chemical process, a total of 53 variables are available, where......
from wastewater by Versatic10/Mextral984H system[D]. Beijing: General Research Institute for Nonferrous Metals, 2014. [37] DAMBIES L, JAWORSKA A, ZAKRZEWSKA- TRZNADEL G, SARTOWSKA B. Comparison......
A. Barnett shale gas production, Fort Worth Basin: issues and discussion[J]. AAPG Bulletin, 2007, 91(4): 523-533. [26] CURTIS J B. Fractured shale-gas systems[J]. AAPG Bulletin, 2002, 86(11......
weight vector is calculated by root square value method. The identification matrix of the evaluation model is built in Eq.(22): (22) The index weight vector is obtained: WA–B= [0.233, 0.392... rings [J]. KSCE Journal of Civil Engineering, 2019. DOI: 10.1007/s12205-019-1509-9. [6] SONG K I, CHO G C, CHANG S B. Identification, remediation, and analysis of karst sinkholes in the longest railroad......
]. Journal of Central South University, 2018, 25(11): 2802-2818. [34] UKRITCHON B, YINGCHALOENKITKHAJORN K, KEAWSAWASVONG S. Three-dimensional undrained tunnel face stability in clay with a linearly......
pores are well developed in the fine siltstones (Figures 6(b) and (e)). Th-rich minerals, such as xenomorphic monazite, and rutile, are developed in intracrystalline pores or interstitial......
distance 由图16(a)可以看出:不考虑渗滤效应的理论计算结果小于真实扩散距离,但整体上又大于有效扩散距离,平均偏大6.1%,波动范围为-32.32%~46.58%.由图16(b)可以看出:考虑渗滤效应的理论计算结果小于真实扩散距离(除S11,S13和S14这3个异常点外),且小于不考虑渗滤效应的理论计算结果,但整体上大于有效扩散距离,平均偏大5.1%,波动范围为-32.55%~28.39%.考......
wind turbine with a follow drive variable pitch[J]. Journal of Southwest University of Science and Technology, 2016, 31(2): 106-110. [16] REZAEIHA A, KALKMAN I, BLOCKEN B. Effect of pitch angle......