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

1、

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

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2、

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。

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3、

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

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4、

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

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5、

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

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6、

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

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7、

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

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8、

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

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9、

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

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10、

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

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11、

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

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12、

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

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13、

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

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14、

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

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15、

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。

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16、

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

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17、

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

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18、

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

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19、

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

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20、

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

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