To deeply research the theory of locating the missing ore beds through faults on complicated geological conditions
复杂地质条件下过断层寻找断失盘矿层理论研究
Sulfur ore bed occurrence in submember of the No.
自然硫矿层在汶口组二段上亚段,泥质灰岩-含泥灰岩-含云灰岩-石膏岩韵律层中的白云岩-石膏岩层段发育。
A new calulating formula for analyzing key elements of seam position and pattern;
矿层位态要素解析计算新公式
Characteristics of displacement and derformation of rockmass and horizontal ore layer(abbreviated as HOL below) in No.
对于金川二矿区1#矿体水平矿层近年来随开采逐渐变薄而日渐突出的变形及稳定问题,采用FLAC3D软件对二矿围岩及水平矿层在开采过程中的位移及变形特征进行了分析。
The lime-stone rocks bed up against the coal.
石为岩层紧靠着煤矿层。
layer,(eg of coal,between layers of other materials,eg rock,clay)
（夹层中的） 层（如石层、黏土层之间的煤层）;矿层.
a pay streak.
含有开采价值的矿层
pockets of manganese in the rock;
岩石中含有锰的矿层；
They extract coal from seams
他们从矿层中采煤。
The Main Chromitite Seam and the Merensky Reef do not outcrop well.
主铬铁岩矿层及麦仑斯基矿层出露不好。
An area in which deposits of coal are found.
煤矿区发现煤矿层的区域
Study on Cation- exchange Capacity of Core from Sandstone Uranium Deposits
砂岩铀矿层矿石阳离子交换容量研究
Knowledge of the occurrence of chromite deposits is likewise incomplete.
对于铬铁矿矿层产状的了解同样是不完整的。
Conference on Shallow (Small) Oil and Gas
浅层(小)油矿和气矿会议
horizontal cut and fill stoping
水平分层充填采矿法
Coal seams intermixed with iron ore.
煤层和铁矿混杂在一起。
Research on Mining Method of Thin and Multilayer Ore Bodies That Sloped Slowly of Yunnan Dayao Copper Mine;
云南大姚铜矿多层缓倾斜薄矿体采矿方法研究
Significance of the Deep Ore Prospecting in Henan Sandaozhuang W-Mo Deposit
河南三道庄钨钼矿区深部下层矿的找矿意义
The Middle Cambrian Tianpeng Formation has high background value of metallogenetic element, which is the advantageous ore source horizon.
田蓬组地层成矿元素高背景值,为有利之矿源层。
A very popular mine, with rocks for both low and high leveled miners.
深受矿山、头都偏低,高层次的矿工.
CHARACTERISTICS AND CONITROLLING FACTORS OF STRATABOUND ORE DEPOSITS IN DEVONIAN SYSTEM, NANLING REGION, CHINA
南岭泥盆系层控矿床特征及控矿条件
Investigation On Switching To Other Production Of The Thin Coal Seam Mines Of Yankuang Group;
兖矿集团薄煤层矿井转产途径的探讨