The diameter of sand, content of plastic clastic and development of coal measures play a role in decreasing pore and development of protogenic pore between grains during diagenetic compaction.
砂岩粒径、塑性岩屑含量和煤系发育程度影响成岩压实减孔量，从而影响剩余原生粒间孔隙发育程度。
Large diameter close to the cart in front wheel, high landscape, a variety of sand soil road potholes can pass.
超大前轮，直径接近推车中的高景观车，各种沙石土路坑洼路面都能通过。
The bearing characteristic of large diameter and super-long pile in quaternary soil layer is analyzed in the case of no good bearing layer (such as rock, sand and cobble layer) and no ripe experience.
在没有良好的持力层（基岩或砂、卵石层）和成熟经验可借鉴的情况下，对第四系土层大直径超长桩（钻孔灌注桩）的承载特性进行了分析。
Based on typical engineering examples, the stability problem of base expansion of large diameter expanded-base piles in sand layer is summarized and analyzed.
结合典型工程实例，总结和分析了大直径扩底桩在砂层中的扩底稳定问题。
The quantitative relation among the threshold wind velocity of sand movement, sand diameter and the agglutinate stress of sand bed is obtained with the mentioned dimensionless variables.
经分析得到起沙风速与沙床沙粒粒径和沙床粘结力间的数量关系。
The travelling valve of the pump is designed to be closed and opened forcibly, and the pump plunger adopts equal-diameter bare pipe with a floating structure to prevent gas lock and sand sticking.
这种抽油泵柱塞游动阀采用机械强制开启和关闭的结构，柱塞为等径光管、浮动结构，可防止发生气锁游动阀、阀球关闭滞后、砂卡柱塞现象。
Meanwhile, in the case of the change of foundation thickness, the law of seepage amount, sand ring diameter, piezometric head, piping breach time etc were respectively explored.
同时，在坝基厚度改变情况下，分别探索了渗流量、砂环直径、测压管水头、管涌破坏时间等的变化规律。
Meanwhile, in the case of the change of foundation thickness, the law of seepage amount, sand ring diameter, piezometric head, piping breach time etc were respectively explored.
同时，在坝基厚度改变情况下，分别探索了渗流量、砂环直径、测压管水头、管涌破坏时间等的变化规律。
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