轉”英文”版..thx

2008-03-13 7:13 pm
1. 片石氣冷措施 - 片石氣冷路基是在路基墊層之上設置一定厚度和空隙度的片石層,因片石層上下介面間存在溫度梯度,引起片石層內空氣的對流,熱交換作用以對流為主導,利用高原凍土區負積溫量值大於正積溫量值的氣候特點,加快了路基基底地層的散熱,取得降低地溫、保護凍土的效果。

2. 碎石(片石)護坡或護道措施 - 在路基一側或兩側堆填碎石或片石,形成護坡或護道。碎石(片石)護坡空隙內的空氣在一定溫度梯度作用下產生對流,寒季碎石(片石)內空氣對流換熱作用強烈,有利於地層散熱,暖季碎石(片石)內空氣對流作用減弱,對熱量的傳入產生遮罩作用,減少了暖季的傳熱,達到了降低地溫、保護凍土的效果

3. 通風管措施 - 在路基內橫向埋設水準通風管,冬季冷空氣在管內對流,加強了路基填土的散熱,有利於降低基底地溫,提高凍土的穩定性

4. 熱棒措施 - 熱棒是利用管內介質的氣液兩相轉換,依靠冷凝器與蒸發器之間的溫差,透過對流迴圈來實現熱量傳導的系統。青藏鐵路有32公里路基採用了熱棒措施

5. 此外還有遮陽棚、隔熱保溫、基底換填、路基排水、路橋過渡段、橋涵基礎等等。

回答 (1)

2008-03-13 7:37 pm
✔ 最佳答案
The slabstone □cold measure - slabstone □cold roadbed is
□□above □sets at the certain thickness and the spatial 隙度
slabstone in the roadbed □, because the slabstone □about lies
between a surface □existence □gradient, causes the slabstone
□□spatial □□class, □hands over □the function to □to flow
□the host □, is bigger than the □□size using the plateau
□earth □□□□size □the period of five days especially □,
sped up the roadbed basis □disperses □, obtains reduces □,
guarantees □□the earth effect.

2. crushed stones (slabstone) □the slope either □a measure - one
□or □□the pile fills in the crushed stone or the slabstone in
the roadbed, forms □the slope or □the road. Crushed stone
(slabstone) □slope crevice □spatial □□lives □the class under
the certain □gradient function, the cold season crushed stone
(slabstone) □spatial □□flows □□the function □fiercely, is
advantageous □disperses □, 暖季 the crushed stone spatially to
the place (slabstone) □□□flows the function □to be weak,
□□the quantity □enters □the fresh shade function, □has been
short 暖季 □□, □arrived reduced □, guarantees □□the
earth effect

3. □tubes measures - □□to bury □Shui?tong in the
roadbed the □tube, winter Leng Kong? in the tube □□class, added
□the roadbed earth fill to disperse □, was advantageous to reduces
the basis □, enhanced □the earth qualitatively □

4. □good measures - □sticks are □lies between using the
tube □□the fluid □□□, depends upon the condenser □steams
□□□difference, passes □□flows □the circle
□□□□quantity □□department □. The Qinghai and Xizang
□road had 32 kilometers roadbeds □to use □the good measure

5. in addition □has obstructs □the awning, separates
□guarantees □, the basis □fills in, the subgrade drainage, Lu??
crosses the section, □contains the base □and so on.
參考: me


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