| 地球膨胀构造动力物理模拟的相似性研究 |
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| 引用本文： | 陈志耕,刘泰峰,冯朝军,孙广丽.地球膨胀构造动力物理模拟的相似性研究[J].地球物理学报,1996,39(Z1):95-104. |
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| 作者姓名： | 陈志耕 刘泰峰 冯朝军 孙广丽 |
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| 作者单位： | 河北地质学院应用地球物理系, 石家庄 050031 |
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| 摘 要： | 按照地球膨胀学说进行全球构造动力物理模拟的相似性研究，得到了膨胀地球岩石层弹性球壳力学模型的方程分析相似准则和地幔物质沿膨胀裂谷通道上涌流动的方程分析相似准则．按照各相似准则的约束，计算得到了满足与膨胀地球原型相似的模型参数：膨胀初始半径为０．４６ｍ；原始岩石层的厚度、密度分别为３×１０－３ｍ和（１．２－１．８）×１０ｋｇ／ｍ３，其强度为１０４Ｐａ；原始地球膨胀内压为４．２５×１０４Ｐａ；原始地表重力为－１．２５×１０－２Ｎ／ｋｇ；上涌物质密度、粘度分别为１．２×１０２ｋｇ／ｍ３和２×１０２Ｐａ·ｓ；原始地幔物质上涌厚度、速度和加速度分别为２．５×１０－２ｍ，２．０×１０－３ｍ／ｓ和３×１０２ｍ／s2．由此表明材料物性等条件能够较好地满足原型要求的模型条件．
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| 关 键 词： | 地球动力 地球膨胀 物理模拟 |
| 收稿时间： | 1996-06-24 |
THE HOMOPLASTIC RESEARCH OF PHYSICAL SIMULATION OF EARTH′S EXPANSIVE TECTONIC DYNAMICS |
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| CHEN ZHI-GENG,LIU TAI-FENG,FONG CHAO-JUN,SUN GUANG-LI.THE HOMOPLASTIC RESEARCH OF PHYSICAL SIMULATION OF EARTH′S EXPANSIVE TECTONIC DYNAMICS[J].Chinese Journal of Geophysics,1996,39(Z1):95-104. |
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| Authors: | CHEN ZHI-GENG LIU TAI-FENG FONG CHAO-JUN SUN GUANG-LI |
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| Affiliation: | Hebei College of Geology, Shijiazhuang 050031, China |
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| Abstract: | In this Paper, according to the theory of earth's expansion, the preliminary research of physical simulated experiment of spheric tectonic dynamics is conducted, the homoplastic standards with elastic globalar shell model of expansive lithosphere is established, the homoplastic standard of mantle's substance gushing from rift ralley is also extablished.On the basis of homoplastic standards, typical simulated parameters are caculated, the values are satisfied with the earth's expansive original shape. The preliminary expansive radius （r） is 0.46m, the thickness of original lithosphere （h） is 3×10-3m, the density of original lithosphere （ρ） is （1. 2-1. 8） × 102 kg/m3, the intensity of original lithosphere （σ） is 104Pa, the internal expansive pressure （P） is 4. 52×104Pa, the earth's surface original weight （g） is -1. 25×10-2N/kg, the density of gushing substance （ρg） is1. 2×102 kg/m3, the viscosity of gushing substance （μ） is 20Pa·s, the gushing thickness （H） is 2. 5×10-2m,the gushing speed （u） is 2.0×10-3m/s, the gushing acceleration （α） is 3×102m/s2 These typical values show that the present technology, equip-ment and material are adaptable to the simulated conditions of earth's expansive tectonic dynamics. |
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| Keywords: | Geodynamics Earth expansion Physical simulation |
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