徑向鬆弛 的英文怎麼說
中文拼音 [jìngxiàngsōngchí]
徑向鬆弛
英文
radial relaxation-
For the construction of single - arch tunnel within cracked surrounding rocks, 8 tunnel models are set up to study the effect of the earth pressure distribution of the various surrounding rocks due to excavation. the relationships between the loosen zone of tunnel radial earth pressure and the tunnel diameter, the characteristics of surrounding rocks and the exposed time are revealed. it is showed that the pressure loosen radius is 1. 2 ~ 2. 0 tunnel diameters and the strongly loosen radius drops to 0. 5 ~ 1. 0 one for double lane tunnel
對于單拱破碎圍巖隧道的構築問題，作者設置了8個隧道模型，研究開挖對不同隧道圍巖壓力分佈的影響，揭示了洞周徑向壓力的鬆弛范圍與洞徑、圍巖特性、裸露時間的關系，得到雙車道隧道壓力鬆弛半徑為1 . 2 2 . 0倍洞徑，強烈鬆弛區半徑為0 . 5 1 . 0倍洞徑。A discretization equation is derived by using a finite volume method in three - dimensional cylindrical polar coordinate system. algebraic equations are solved by iteration with a line - by - line method that is a combination of tdma in axial and radial directions, ctdma in tangential direction and adi method in three directions. the pressure and velocity coupling are solved with the simple algorithm
在三維圓柱坐標下，利用有限體積法推導離散方程；在軸向與徑向用三對角矩陣法（ tdma ） ，在周向採用循環三對角矩陣法（ ctdma ） ，採用交替方向亞鬆弛疊代法（ adi ）求解方程；推導同位網格下的壓力修正方程，用simple演算法處理速度與壓力的耦合；為加速收斂，採用適當的鬆弛因子。
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