粗砾

粗砾和卵石应质地坚硬，耐久。

Shingle and cobble rock shall have flinty structure and be durable .

对于降雨量较大的地区，采取用水泵抽水的方式来供给草坪或用作其它用途。因此选择粒径较大的粗砾作为储水系统的材料。

In the bigger amount of rainfall area , it takes the way which pumps water with the water pump to supply the lawn or to serve as other uses .

在模型试验的基础上，建立了静力触探的锥尖阻力与公路桥涵台背回填中粗砾砂的相对密实度的经验公式。

Based on the results of model tests , two experiential equations are set up about the cone resistance of the static cone penetration and the relative density of coarse sand filled in the back of bridge and culvert .

常常在排水瓦管周围铺一层粗石砾。

A layer of coarse gravel is often placed around the drain tile .

笔者收集了在中、粗、砾砂地层中打设夯扩桩的一些原始资料，通过对这些数据的对比统计分析，得出了一些有益结论。

According to the comparison and statistic analysis of the tamping extended pile data in the middle , coarse and gravel sand stratum , significant conclusion has been obtained in this paper .

粗粒含量对砾质土工程性质影响的研究

Influence of Coarse Grained Content on Engineering Properties of Gravelly Soil

认识到苏里格气田盒8段砂质辫状河沉积的各类砂岩中，只有粗砂岩和含砾粗砂岩相才能形成有效储层，而中、细砂岩为非储层。

Only the coarse grained and conglomeratic sandstones in the braided channel sandy sediments can be effective sandstones , while the medium and fine grained sands would be invalid .