Prediction for block caving velocity of ore-rock is a complex dynamic process that relates to the caving rule and to the relation between caving and time.
矿岩自然崩落速率预测是一个涉及崩落规律和崩落与时间相依关系的复杂动态过程，通过数值模拟的方法，对流变断裂型矿岩的自然崩落规律和崩落速率进行了模拟研究。
In view of underground mining, an ore-rock stability evaluation was taken combining the fuzzy-grey-element, on the parameters that are capable to reflect ore-rock stability.
将模糊灰元与矿岩稳定性评价相结合，从地下开采的角度选取能够反映矿岩稳定性的参数进行评价。
Escondida means "hidden" in Spanish, and it refers to the fact that the copper ore body was buried beneath hundreds of meters of barren rock, and the surface geology gave no signs of its presence.
埃斯康迪达在西班牙语中有“隐藏”的意思，正暗示了铜矿的矿体埋藏在废石层下几百米深的地方，而从地表却一丝痕迹也看不出来。
Rock wool carpet is insulation and other natural basalt ore, etc as the main raw material, by high temperature melting into fine, join the amount of processing from the binder.
岩棉保温毡是以玄武岩及其它天然矿石等为主要原料，经高温熔融成纤，加入适量粘结剂加工而成的。
A mathematical theory of fuzzy probability measure has been used for solving the problems of rock mass displacements and deformations due to excavation, especially in the. mining of metallic ore.
本文将模糊数学中的模糊概率测度理论用于研究地下开挖尤其是地下金属矿开采而导致的岩体移动和变形问题。
In mining the extremely fractured thin ore body, the separation of waste rock in the conventional shrinkage stoping was replaced by the separation of the rich ore and retaining the lean ore.
对极破碎薄矿体的开采，采用了将常规的留矿法中分选废石改为分选富矿石留贫矿石的采矿方法。
Until now, some studies showed that major source of ore-forming materials come from wall rock or upper mantle.
目前，有关研究认为此类矿床成矿物质主要来源于矿床的围岩或上地幔。
Rock wool insulating tubes is basalt and other natural ore, etc as main raw materials, by high temperature melting in a fiber, stir-in binder, curing processing and is made.
岩棉保温管是以玄武岩及其它天然矿石等为主要原料，经高温熔融成纤，加入适量粘结剂，固化加工而制成的。
Practice has proved that good effects in the transport of dry cement clinker, limestone, phosphate rock, titanium iron ore, coal and slag materials.
实践证明，在输送水泥熟料、干燥的石灰石、磷矿石、钛铁矿粉、煤和矿渣等物料时效果良好。
The microclastic rock of host strata furnishes gold ore deposition with an advantageous environments.
容矿细碎屑岩石，为金的沉淀提供了有利的环境；
Copper deposits in the south east districts of Hubei province are mostly of skarn rock having simple ore properties.
鄂东南地区的铜矿床大多属于矿石性质简单的矽卡岩矿。
A revolving cylindrical sieve used for screening or sizing rock and ore.
滚筒筛一种圆筒形的可旋转的筛，用于岩石和矿石的筛分或大小测量。
By means of consulting much information, this paper proves that there is a close relation between tin ore deposit and ferromagnesian rock.
文章通过查阅大量国内外有关资料，证实了基性超基性岩与锡矿床的形成有密切的关系。
Marmatite is the guide mineral of the second ore type which appears in bedded, veined and irregular ore bodies near contact zone of magmatic rock or joint positions between faults and ore beds.
另一种以铁闪锌矿为标志，矿体呈似层状、脉状及不规则状等，靠近岩体接触带或断裂与赋矿层的交汇部位产出，代表了成矿第二世代。
Huangshilao gold mine belongs to the extra unstable ore deposit of which, the ore? Rock masses are broken and spongy with high soil containing rate.
黄狮涝金矿矿体含泥率高，矿岩体松软破碎，属极不稳固的难采矿体。
This subject introduce some common rectangle ore pillars and its advantages, and rock mechanics analysis and evaluation of rectangle ore pillars support effects.
介绍了几种常见矩形矿柱及其优点，并对矩形矿柱的支撑效果进行岩石力学分析和评价。
This paper systematically expounds rock characteristics, ore-forming process, natrium origin and natrium alteration mechanism in contacting zones of Daye iron deposit.
对于大冶铁矿内接触带钠化蚀变的岩石特征、钠质来源、动力机制、形成机理等作了比较系统的阐述。
Class c: solid mineral exploration; rock ore appraisal and testing.
丙级：固体矿产勘查；岩矿鉴定与岩矿测试。
The event is ore earthquake of rock burst type related to coal mine exploitation and mining activity, the micro-earthquake swarms belong to occasional local stress releasing.
这次微震群属于冲击地压型矿震，与煤矿开采及回采工程活动有关，属于偶发的局部应力释放。
The importance of this understanding lies that the ore controlling fracture and Lugou rock body is an integrated one and both take the same important role in exploration prediction.
这一认识的重要意义在于：控矿断裂和炉沟岩体是一个有机的整体，两者在找矿预测中应处于同等重要的地位。
The ore forming rock series should be turbidite origin.
与成矿关系密切的岩石为浊积岩成因。
Class B: areal geology survey; geophysical exploration; rock ore appraisal and testing.
乙级：区域地质调查；地球物理勘查；岩矿鉴定与岩矿测试。
Specimen of rock and ore from Mt. Tienchu.
来自天柱山的矿石标本。
PCB series crusher is used for breaking medium degree of hardness materials, such as brittle ore, rock, coal limestone, slag, etc. in chemicals, cement, building materials and electricity industries.
PCB系列锤式破碎机可供化工、泥、材、电等工业部门做中碎或细碎各种中等硬度以下的脆性矿山、石和煤、灰石、渣等。
The ore types are mainly structural altered rock type.
矿石类型主要为构造蚀变岩型。
The embankment is filled with the iron ore flaked rock in A01 segment of the flood control for Qian 'an city area near the Luanhe River, how to control the construction quality is the key.
滦河迁安市区段防洪工程第三期工程A 01标段采用天然级配铁矿剥岩土作为筑坝材料，如何控制施工填筑质量是关键。
The characters of fluid inclusions in calcite and water-rock reaction of the ore deposits was systematical studied.
系统地研究了脉石矿物方解石中流体包裹体特征及矿床的水岩反应条件。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
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