About 160 samples of coal,pyritic coal balls,coal seam gangue,clay,corn,capsicum and drinking water were collected from endemic fluorosis area of Zhenxiong and Weixin county to determine the fluorine content,distribution pattern and source in this fluorosis area.
中毒区的拌煤黏土中氟含量一般在367-2 435 mg/kg,但以含氟量超过600 mg/kg的高氟拌煤黏土为主,平均含氟量为1 084。
The contents in the clay and the mixture of coal and clay reach to 2 239×10-6 and 863.
8×10-6,低于中国煤和美国煤中氟的背景值;拌煤黏土和煤泥混合物中氟的质量分数很高,分别为2 239×10-6和863。
Effect of freeze-thaw cycles on dynamic strength of fly ash soils;
冻融循环对粉煤灰土动强度的影响
Tests on composite material from easy liquefaction fly ash and easy freezing silty clay according to dry weight 1:2 are conducted to investigate the dynamic properties of fly ash soils for roadbed filling.
为研究粉煤灰土作为路基填料的可行性,把易液化的粉煤灰和易冻胀的粉质黏土按干重1:2混合,通过冻融循环后的动三轴试验,研究了粉煤灰土的动力特性,得出了动强度和循环荷载次数及冻融循环次数的数量关系,以及动模量与动应变及冻融循环次数的关系曲线。
By a seies of dynamic cyclic triaxial shear tests on middle-liquidity limit sility clay and fly ash soils(1:2) of roadbed fillings,the dynamical characteristics of middle-liquidity limit sility clay and fly ash soils(1:2) are analyzed and Compared.
通过对路基填料粉质中液限粘土和粉煤灰土的动力循环荷载试验,分析了粉质中液限粘土和粉煤灰土1:2的动力特性,并进行了比较,得出了动剪强度与循环荷载次数间的变化规律,动模量与动应变的关系表达式,粉煤灰土1:2动剪强度好于粉质中液限粘土,可以作为路基填料。
Glomus zaozhuangianus, a new species of Glomus from coal mine soil in south-western Shandong of China is described.
在鲁西南煤矿土中分离到球囊霉属一新种——枣庄球囊霉。
In order to break the monopoly,a lot of Chinese merchants in Guangzhou fought for the kerosene market by making native kerosene in 1930s.
为打破这种局面,30年代时大批广州华商通过炼制土制煤油,力图与外商三公司争夺广州煤油市场。
Assembled reinforced-concrete supports for roadways in coal mines
GB248-1964装配式钢筋混凝土煤矿巷道支架
Waste from anthracite coal mines, consisting of fine coal, coal dust, and dirt.
无烟煤废渣无烟煤煤矿的废弃物，由细粒无烟煤、煤尘和尘土构成
Methods Plant; Distribution Plant, coke, bauxite, pig iron.
洗选精煤；经销精煤、焦炭、铝矾土、生铁。
A BRIEF SUMMARY OF A TEST ON FLY ASH CONCRETE OF COAL WHARF OF LONGKOU, SHANDONG PROVINCE
山东省龙口煤码头粉煤灰混凝土试验小结
Effects of Weathered Coal on Soil Properties in Open-Cast Mine Area
风化煤施用对露天煤矿区复垦土壤性质的影响
Study on Stabilization of Soils with Enzyme X-22 and White Lime-Fly Ash;
用坚土酶和熟石灰粉煤灰加固土壤的研究
The Study of Land Use and Cover Change in the Large-Scale Open Coal Mine Area of the Loess District;
黄土区大型露天煤矿土地利用/覆盖变化研究
A Research of the Changes in Coal Bunker Land Use and Land Cover in Western Henan;
豫西煤仓土地利用与土地覆盖变化研究
The Reutilization Approach of the Discarded Land Rresource of Large-scale Opencast Mine in Loess Area;
黄土区大型露天煤矿废弃土地资源再利用途径
Application and Research of Metakaolin in the Coal Mine Shotcrete
偏高岭土在煤矿喷射混凝土中的应用研究
Discussion on characteristics of high strength fly ash concrete and concrete with ground slag
浅谈高强粉煤灰混凝土和矿粉混凝土的性能
Relationships between plant and soil at Haizhou mine waste dump in Fuxin
阜新海州露天煤矿排土场植被与土壤环境关系
Applied technical specification for high-lime fly ash concrete
高钙粉煤灰混凝土应用技术规程
I found some pieces of coal in the sacks of dust!
“我在土袋子里发现了几块煤。”
Technical code for design of flyash concrete for hydraulic structures
水工混凝土掺用粉煤灰技术规范
cutting machine,for coal, earth or rock, self-propelled
自动推进煤、土壤或岩石切割机
Fly ash used for cement and concrete
GB/T1596-1991用于水泥和混凝土中的粉煤灰
Technical specification for fly-ash concrete in port engineering
港口工程粉煤灰混凝土技术规程