水頭坡降 的英文怎麼說
中文拼音 [shuǐtóupōjiàng]
水頭坡降
英文
water table gradient-
It is concluded : the determination of the center spacing may be conducted under the permissible elevation of the exit line of seepage surface on slope surface downstream. in the end, the author has analysed the seepage field what the holes are placed two rows along the slope height
另外，在對比多種孔距的方案分析結果的基礎上，得出結論：排水孔孔距變化對邊坡滲流場沿邊坡走向方向水頭分佈影響明顯，布設排水孔應根據目標降深確定排水孔孔距。Cour and silting characteristics of debris flows - because of resistance decrease due to supernormal pore water pressure, intermittent debris flows can be accelerated on mild slope in the superimposable processes of several debris flows
?泥石流的沖淤變化特性?泥石流多陣迭加過程中出現超載孔隙水壓力使龍頭阻力降低，在緩坡上能夠加速運動，說明泥石流龍頭迭加具有加速效應。The primary contents are as follows : ( 1 ) based on the fundamental seepage physical equation, the basic differential equation of saturated - unsaturated seepage in porous mediums has been deduced, in which the pressure head is the fundamental unknown quantity. a calculated model for analysis of saturated - unsaturated seepage field with the boundary condition of rain infiltration also has been developed
總體說來，本文主要從以下幾個方面開展了研究： （ 1 ）由基本滲流物理方程出發，以壓力水頭為基本未知量推導多孔介質三維飽和?非飽和滲流微分方程，在此基礎上分析了邊坡在有降雨入滲條件下滲流的定解條件和計算模型。The author has analysed the seepage behavior of the fields in slope with the major parameter of the drain hole diameter and the length of hole. it is concluded that within the usual diameter of the hole, the size of the hole diameter has only minor influence on the field and the length of hole has more distinct influence. the author has analysed the effect of the center spacing change on the seepage field
其次，本文利用排水子結構法模擬排水孔，對排水孔孔徑、孔長多種布設方案的滲流場分佈對比分析，認為在通常可能取值的孔徑范圍內，孔徑變化對排水孔排水效果有影響，但影響較小；提出了孔徑選擇的原則；排水孔排水效果對排水孔孔長變化比較敏感，排水孔布設長度的選取應根據邊坡處治需要降低水頭的沿邊坡傾向方向的邊坡范圍來確定。分享友人