coarse gravel 中文意思是什麼
coarse gravel
解釋
粗礫石-
A layer of coarse gravel is often placed around the drain tile.
常常在排水瓦管周圍鋪一層粗石礫。 -
Coarse gravel or crushed rock laid to form a bed for roads or railroads
道碴用來鋪公路或鐵路路基的粗砂礫或碎石 -
The cushion layer for the dam is constructed with the material prepared mainly with natural sandy gravel and mixed with proper amount of pebble and coarse sand
大壩墊層料採用以天然砂礫料為主、摻入小石和粗砂以調整級配的方式生產。 -
5. for frozen erosion the good measure is to cut slop and lining with coarse gravel ; meanwhile, adjust the canal operating to less the frozen
（ 5 ）對于凍融和凍脹較為嚴重的渠段則宜採用削坡后鋪碎石護岸；為減輕凍融侵蝕，同時採取適當的調度方式。 -
Railway jacking bridge engineering passing through sand pebble ( gravel ) layer, because it is a complex loose coarse fragment accumulation layer, the roadbed must be reinforced
摘要鐵路頂橋工程中遇到砂卵（礫）石層時，因砂卵（礫）石層是一種復雜鬆散粗碎屑堆積層，因此必須對鐵路路基進行加固。 -
Coarse grained soil is composed of sand and gravel, stone residual, blasted stones etc., which has a characters of less cohesive force among grains and strong ability of water penetration. it is a kind of soil of loose grain structure with better utilization properties in the engineering
粗粒土是指砂礫石、砂卵石、石渣、爆破開採的石料等粗顆粒土石混合料，具有粗顆粒間粘結力小、透水性強的性質，是一種鬆散的顆粒狀結構，具有良好的工程使用性能。 -
Then, using the large - scale coarse grained soil test system, the relative density and direct shear characteristics of sand - gravel mixtures in different size distribution were tested. and the soc affecting mechanism derived from non - uniform granular material was discussed. the phenomenon can be observed that, along with the increase of non - uniform degree, the accumulate structure will become more complex, and the sliding resistance among sands will grow accordingly
在此基礎上，利用大型粗顆粒實驗系統，測定不同非均勻系數沙石材料的相對密度和直剪特性，探討了顆粒非均勻程度對自組織臨界性影響的具體物理力學機制：隨著非均勻度的增大，散粒堆積體的顆粒結構空間分佈堆積方式的多樣性增大，顆粒滑動的摩擦耗能增加。
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