粘土层

通过改进刮刀钻头解决硬塑粘土层钻孔施工的难题

Surmounting Difficulties of Boring in Hard Plastic Clay Stratum Through Improving Drag Bit

不整合是由不整合面及其上、下岩石三部分组成，在空间上具有三层结构，即不整合面之上的岩石、不整合面之下的风化粘土层以及风化粘土层之下的半风化岩石。

Unconformity generally consists of unconformity interface , overlying rocks and underlying rocks , and is spatially characterized by three stratal structures , consisting of rocks above the unconformity interface , weathered clay below the unconformity interface , and semi-weathered rocks under the weathered clay .

尾矿库中U、Th和~（226）Ra在亚粘土层的垂向迁移

U , th and ~ ( 226 ) ra vertical migration in sub-clay from an uranium tailings impoundment

科尔沁沙地中部沙质灌溉农田土壤全N和有机C含量的垂直分布呈锯齿状，表现为明显的多‘峰谷’性，这种变化与土壤的粘土层/有机质层和沙层交错分布的特点有关。

The vertical distribution of organic C and total N contents in irrigated cropland soil presents a pattern of fluctuation with the alteration of clay / organic layer and sandy layer .

同时，在风化壳中发现Cu富集特征，Cu含量达到0.5%，由于Cu赋存在高岭石粘土层中，容易提取，可能是Cu矿重要的找矿层位。

Content of Cu is up to 0.5 % . Cu is easily extracted by chemical method due to Cu preserved in the kaolinite clay . Therefore , the horizon of basalt weathering crust may be an important prospecting horizon .

由于该场地下方粘土层的渗透系数很小，污染物的迁移距离在30cm～40cm左右，能较有效地防止垃圾中污染物的快速下渗迁移。

With small infiltration coefficient , migration distance of pollutants was 30 ~ 40 cm , which prevented infiltration of pollutants to ground .

三角洲的形成晚期为海边洼地或沼泽地，形成一套厚为20～25m的以淤泥为主的软粘土层。

The delta has been finally evolved into coastal pots or morass , forming a set of 20m to 25m thick and soft clay beds composed of muck .

介绍了常见的用于垃圾填埋场的防渗材料，以工程实例探讨了垃圾填埋场防渗层的结构设计及其优化方案，并对HDPE膜的焊接和粘土层的施工作了介绍。

The article introduces common impermeable materials used in landfills and discusses structural design and optimization of impermeable layer of landfills based on real projects . It also describes welding of HDPE membrane and formation of clay layer .

祁东矿表土240～280m，为一特厚粘土层段。

There is a special thick clay of about 240 ~ 280 m under the topsoil of Qidong Coal Mine .

成渝铁路典型路基边坡由砂泥岩互层及其风化带组成，顶部为2～5m的砂粘土层。

The typical subgrade slope of Chengdu Chongqing railway is made of sandstone mudstone layers and its weathering zones are covered by a sand layer with a thickness of 2 ~ 5 m.

遍布全球的K／T界线粘土层不仅存在着铱的丰度异常，其它铂族元素的含量也异常高，并且基本上保持着类似与地外物质中的丰度分布模式。

In the K / T boundary layers at all parts of the world , not only was there tremendous iridium anomaly , but the contents of other platinum group elements were enriched multiply as well . Additionally , the distribution patterns of PGEs were essentially consistent with extraterrestrial matter .

负载后的PdPcS和表面活性剂共存于粘土层间，极大地抑制了它的聚集。

The incorporated PdPcS , coexisted with the intercalated surfactant in the clay interlayers , greatly restrained its aggregation .

本文基于Merchant模型分别推导了自由应变条件和等应变条件下打穿软粘土层的竖向排水井地基粘弹性固结问题解析解，同时考虑了井阻和涂抹作用的影响。

The rigorous solutions are derived for the consolidation problems of soils with drain wells through soft clay layer by use of the Merchant model under both free strain and equal strain conditions and in consideration of the effects of both well resistance and smear action .

PTB之下14cm处火山成因的粘土层25层的年代，现在定为（252·4±0·3）Ma（Mundil等，2004）。

( 2004 ) the age of volcanogenic clay bed 25 , 14 cm below the PTB , is now set at ( 252.4 ± 0.3 ) Ma .

南端有320.6m隧道穿越软流塑淤泥质粉质粘土层，覆土厚度8～9m，穿越地面建筑群和地下管线网。

320.6m of the tunnels at the south part go through soft flowing mucky silty clay and underground pipelines , with an overburden thickness of 8 ~ 9m .

粘土层孔材料处理含铬废水的研究

Study on the treatment of chromium - containing wastewater with rectories

列车荷载作用下饱和软粘土层内的力学响应

Dynamic response of saturated soft clay soil under load of train

深部厚粘土层内井壁工程地质特征分析

Engineering geological properties of deep-thick bedded clay around the shaft wall

硬塑性红粘土层斜井高效爆破技术研究

Study on Blasting Techniques of Oblique Well in Stiff-plastic Red Clay

铁催化剂流化床合成的石脑油馏分粘土层间镶嵌金属络合物催化剂&均相催化剂多相化的一种模式

Hydrocol naphtha fraction clay-intercalated metal complex Catalyst-a model of homogeneous catalyst heterogenization

天津是个沿海城市，广泛存在着软弱性粘土层。

Tianjin is a coastal city with extensive soft cohesive soil layers .

浅谈混凝土与粘土层的摩阻力

Discussion on frictional force of concrete & adhesive soil level

淤泥质粘土层地基处理两种设计方案比较

The Comparison of Two Kinds of Mud Clay Ground Reinforce Method s

冻结井深厚粘土层施工实践

Shaft Construction by Freezing Method in Thick Clay Strata

粘土层钻井中的井帮规整性分析

Regularity of shaft wall when penetrating through clay layers

粘土层间金属络合物催化剂及其分子识别催化作用

Clay-intercalated Metal Complex Catalysts and Their Molecular Recognition Catalysis

软粘土层上的油罐差异沉降陕北石油秩序

Differential settlement of oil storage foundation on soft clay

硅铝－氧化物－硫酸盐型风化壳风化粘土层-半风化岩石型不整合的矿物学、地球化学特征

Mineralogical and Geochemical Characteristics of Unconformity Structure with Weathered Clay and Sapropelic Rock

钻孔灌注桩穿越碎石粘土层的工程实践

The Engineering Practice of Drilled Grout Hole Palisade Passing Through the Shattered Clay

我国东南沿海地区广泛分布着深厚的软弱粘土层。

Soft clays are widely distributed in the coastal area of the southeast China .