Drilling and sampling for big aperture air down-hole hammer in sand and gravel layer

Discussion on Geological Drilling in Gravel Layer of Dongting Village Xin Jia Yuan Project

武汉东亭村新嘉源项目卵石层地质钻探技术探讨

Consequently, the classification should be adjusted according to other engineering geological characteristics of the gravel layer.

因此需要参考砾石层的其它工程地质特性对场地类别予以调整。

Practical effect of PHC piles driven into gravel layer by high-frequency vibratory hammer

卵石层中采用高频振动锤施打PHC管桩效果分析

Studies on technology of seepage-prevention curtain grouting with thick sand and gravel layer

深厚砂砾石层防渗帷幕灌浆施工技术研究

Slurry making technique of holing by churning driven in sand gravel layer

旋挖式钻孔砂卵石层条件下泥浆制作技术

The application in double liquid grouting technology in water plugging and concretion construction of sand gravel layer

双液注浆固结砂卵石层止水施工技术的应用

Destructive tests on piping failure of sandy gravel layer of river dikes

江河大堤堤基砂砾石层管涌破坏危害性试验研究

Study of the effect of slurry trench on concrete cut-off wall in deep sand gravel layer

护壁泥浆对深厚砂砾石层混凝土防渗墙影响的研究

Water Controlled Coal Mining Technology Under Cracking Strata of Super Thick Gravel Layer with High Pressurized Water

高水压巨厚砂砾层裂隙岩体下控水采煤技术

The behavior of grouting pile inserted into sand or gravel layer under axial load

嵌入砂或砂砾层中的桩底灌浆桩竖向承载性能研究

Discussion on sand and gravel layer foundation of concrete faced rockfill dam

砂卵砾石层作为混凝土面板堆石坝坝基探讨

Field test study of methods for supporting large-section inclined shaft in gravel layer

卵砾石层大断面斜井井筒支护方法现场试验研究

Construction Quality Control On Thick Gravel Layer Punch Pile

深厚卵石层冲孔灌注桩施工质量控制

A Study on Permeation Grouting in Gravel Layer and Application

砂砾层渗透注浆机理研究与工程应用

Middle Pleistocene strata: gravel layer; sand, coarse sand interbedded with gravel layers; gravel layers.

中更新世：砾石层；砂、粗砂与砾石层互层；砾石层。

Gas productivity prediction for tight sandy gravel formation in the Daqing Oilfield

大庆深部致密砂砾岩含气储层产能预测

High-pressure rotary swing grouting treatment technology for strong permeable sandy gravel complex formation

强透水砂卵石复杂地层的高压旋摆喷灌浆处理技术

Experimental Study of Frost Susceptibility of Sandy Gravel with Different Contents of Fine-grained Soil

不同掺合料砂砾石的冻胀实验研究

Settlement calculation and control analysis of sluice on deeply covered layer of sandy gravel

砂砾石深覆盖层上水闸沉降计算与控制分析彩砂涂料的特性和应用

Construction Measures of the Shield through Shallow Covering Section under Sandy Gravel Formation

砂卵石地层下盾构过浅覆土路段施工技术