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- Compared to normal ore drawing,the eccentricity of ellipsoid,the viscosity resistance and inner friction amo... 散體顆粒受振運動(dòng)是一種不規則、復雜和隨機的運動(dòng),具有分形特征,對其進(jìn)行了分形分析和模擬。
- Based on making a study of them, the single cut-off grade for ore drawing is regarded as les... 通過(guò)研究分析,認為單一截止品位放礦方法與其他兩種方法相比,在理論上沒(méi)有優(yōu)勢和發(fā)展潛力。
- Based on the technical and economical index, an optimal decision for the cutoff grade of ore drawing is presented. 在獲取礦石技術(shù)經(jīng)濟指標的基礎上，對截止放礦品位進(jìn)行了優(yōu)選政策。
- Cut-off grade method has been used to control the ore drawing in non-pillar sublevel caving mining both in and outside China. 采用無(wú)底柱分段崩落采礦法,國內外一直采用截止品位放礦法來(lái)控制出礦。
- Taking Jingtieshan Mine as an example,the peper deals with several problems with applying non-dilution ore drawing mw thod. 以鏡鐵山礦為例研究了無(wú)貧化放礦方式在礦山應用的若干問(wèn)題。
- Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing.Non-dilution ore drawing is most ideal drawing mede. 研究表明，造成無(wú)底柱分段崩落法來(lái)出礦石貧比大的根本原因在于采用了不合理的截止品位放礦方式，無(wú)貧化放礦是無(wú)底柱分段崩落法最為理想的放礦方式。
- In the light of the problems in the nonpillar mining, the formation and principles of the wide spacing and the low lean ore drawing process are presented. 針對無(wú)底柱采礦存在的問(wèn)題,闡述了大間距與低貧化工藝的形成及原理,采用該結構及工藝是降低產(chǎn)品成本的有效方法。
- In order to seek reasonable cut-off grade for ore drawing in subdrifting and caving without sill pillar, the relative researchers have put forward various theories and methods. 為尋求無(wú)底柱分段崩落采礦法合理的放礦截止品位,眾多研究者進(jìn)行了大量的研究,提出了多種理論和方法。
- Continuous mining for ore drawing and hauling in stope is one of the important achieve-ments in the research area of continuous mining technology in China. 采場(chǎng)出礦運礦連續作業(yè)，是近年來(lái)我國在連續工藝技術(shù)研究領(lǐng)域中所取得的重大成果之一。
- Research on continuous ore drawing and haulage equipment for underground metal mines has widely been done in main foreign countries with mining industry. 國外主要礦業(yè)國家對地下金屬礦山連續出礦運礦設備進(jìn)行了深入的研究。
- The low dilution mode of ore drawing requies that ore quality management be suited to the feature of ore and rock movement during ore drawing in sublevel caving. 無(wú)底柱分段崩落法低貧化放礦方式要求限制廢石漏斗在出礦口的破裂。
- Aceording to the diffcrent conditions of mines applied non-sill sublevel caving method,various programmes for application of non-dilution ore drawing mothod are presented. 并根據無(wú)底柱分段崩落法礦山的不同情況，提出了各種應用無(wú)貧化放礦的實(shí)施方案。
- After analyzing the movement law of ore drawing body,the basic parameters of sublevel mine in a gold mine are calculated by the experiment result of single model and surface model in a lab. 介紹了無(wú)底柱分段崩落法放礦基本原理,利用室內單體模型和平面模型的放礦試驗,分析了放礦體的流動(dòng)規律,并據此確定了某金礦無(wú)底柱分段崩落法的基本結構參數。
- This paper introduces in detail three of the probability distribution equations corresponding to ore drawing under infinite, semi-infinite and dip-wall boundaries in caving system. 發(fā)現三類(lèi)邊界條件下的顆粒移動(dòng)概率均可用正態(tài)分布函數表示，其方差值與層面高度成冪函數關(guān)系（）。
- He hasn't the willpower to stop eating so much. 他缺乏意志力，克制不住自己的貪吃。
- I stop with my brother while I am in Beijing. 我去北京總是住在哥哥家里。
- Tell that joker to stop using my parking space. 叫那個(gè)家伙不要占用我的停車(chē)場(chǎng)。
- YZZ vibration flow aiding machine is a newly developed ore drawing device, which is devised on the basis of the theory of autogenuous synchronization and directional vibro excitation. 采用自同步定向激振理論設計,將重力自溜與振動(dòng)出礦融為一體的YZZ型振動(dòng)助流器,具有分節組合、大傾角、無(wú)側板的結構特點(diǎn)。
- He interposed himself between them to stop them fighting. 他擠進(jìn)兩人中間，阻止他們打架。
- Stop your useless chatter and listen to what Roy is saying. 你們的閑談停一停，聽(tīng)聽(tīng)羅伊說(shuō)什麼。
