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   mining costs 的翻译结果: 查询用时:0.198秒
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mining costs
相关语句
  采矿成本
     Increasing advance interval to reduce mining costs
     加大进路间距降低采矿成本
短句来源
     The optimization method of structure parameters for sublevel caving method without floor pillar was discussed in theory, through the success experience of similar mines at home and abroad, and by the practical analysis of Meishan iron mine, it was shown that increasing the stope advance interval for was an effective way to reduce mining costs.
     从理论上探求了无底柱分段崩落法采矿结构参数的优化方法,并通过国内外同类矿山的成功经验,以及梅山铁矿的实例分析,说明了加大采场进路间距,是降低采矿成本的有效方法。
短句来源
     According to the practice of the first phase output of 600,000t/a in Xinqiao Pyrite Mine and high mining costs,and the issues of optimum technical plan in first phase extend engineering,the measures of reducing production costs,and improving comprehensive utilization of mineral resource are provided in this paper.
     结合新桥硫铁矿一期坑采 6 0万t/a生产中存在的采矿成本高 ,一期延深工程需要进一步优化技术方案等问题 ,提出了如何通过加强技术管理降低生产成本 ,提高矿产资源综合利用的措施
短句来源
     The experimental study on the beforehand control-roof downward slicing all-round mining jointly operated by Kunming University of Science & Technology and Tong-guan-shan Copper Mine is made which reaches the goal to upgrade the production capacity, increases the ore recovery, lowers the ore dillution, reduces mining costs and improves mine benefits.
     介绍了昆明理工大学与铜官山铜矿共同合作进行的预控顶下向分层全面采矿法试验研究 ,达到了提高生产能力、增加矿石回收率、降低贫化、减少采矿成本、增加矿山效益的目的
短句来源
     In the paper,in terms of the real situation of the open pits,the parameters of drilling and blasting are studied under the complex condition and the complex geological situation in open pits beach by applying controlled blasting, so that it guarantees the safety of the prime tunnel beneath the blasting place,the stability of the lasting road and the high slope, reduces ore dilution rate, lump rate, mining costs, and it brings a better project profit.
     利用控制爆破理论,结合实际情况,研究在复杂环境和复杂地质条件下露天采矿场台阶穿爆参数,以确保紧邻爆区正下方主平硐的安全,永久性公路与高边坡的稳定,降低矿石的贫化率、大块率和采矿成本,提高效益。
短句来源
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  “mining costs”译为未确定词的双语例句
     Based on analysis of mining costs, a formula for calculating the optimum length of fully mechanized longwall faces is derived and the relationship between the longitudinal length of the blocks and the cost of relocation of the face equipments and also that of driving of headings are listed.
     作者通过对采煤成本的分析,推导出综采工作面经济上最佳长度的计算公式,并列出了工作面连续推进方向长度与搬家倒面费和采准巷道掘进费的函数关系式。
短句来源
     For small working place and large quantity water flush in deep mining, upper banch understripping, and no deep dewatering in Shilu open pit mine,the mining efficiency declined, mining costs increased largely, and loss in economy.
     石铜业公司露天矿的深部开采因作业面积狭小、涌水大,上部台阶欠剥多,深部疏干排水工程未开展等因素的影响而出现效率下降,开采成本大幅上升,经营亏损。
短句来源
     Based on ores deposit condition,it makes some exploratio n about how to improve mining efficie ncy,enhance stope roof and rock press safety management,make the roof or bottom p illar effectively and safely,decre ase ores loss and povertification,r educe mining costs,recover mineral resou rces as much as possible.
     根据矿体赋存条件,就如何提高采矿工效,加强采场顶板、采场地压安全管理,有效安全地回采顶底柱,降低矿石损失贫化与采矿作业成本,最大限度地回收矿产资源,作了一些探讨。
短句来源
     Based on the study of the prices of mining outputs and the analysis of the uncertainties of mining costs and revenue,and by means of Option Pricing Theory(OPT),an dynamic programming model is developed to provide a helpful approach and quantitative tools for mining projects evaluation and investment.
     在充分研究了矿产品价格的运行模式和矿业投资项目成本和收益的不确定性的基础上 ,应用实物期权理论和方法 ,建立了矿业工程项目投资价值评价和投资决策模型 ,为矿山投资决策提供了新的思路和决策方法
短句来源
     The cage ears for hoisting in mine will increase mining costs because of wearing heavily.
     矿井提升罐笼罐耳,由于磨损严重,增加了采煤成本。
短句来源
  相似匹配句对
     Increasing advance interval to reduce mining costs
     加大进路间距降低采矿成本
短句来源
     On Mining Science
     采矿科学刍议
短句来源
     operational costs.
     4、运行成本。
短句来源
     ECOLOGICAL MINING
     生态矿业
短句来源
     Crashing Costs
     粉碎费用
短句来源
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  mining costs
Declining trends in average ore grades, increasing mining costs and environmental considerations will ensure that this situation will remain in the foreseeable future.
      
Reserve characteristics and mining costs An empirical study of the phosphate industry
      
An operational equation which takes into account the number of ventures, probability factors P1, P2, P3 and the estimated mining costs for a given region has been employed to assess the likely returns.
      
When people consider technological change and its role in reducing mining costs, they focus on the impact of such change on production processes.
      
Very large cavities in flexible geometries can be created at very low mining costs in the well-studied salt rock at WIPP.
      
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The conventional longwall mining system has been now widely adopted in underground mining of mildly dipping and thin orebodies with feeble immediate roofs in China and abroad, however, this method has defects inherent in its geomechanical properties. For instance, it suffers a comparatively higher mining cost due to large consumption of fine grade timber; moreover, the production output in tons per manshift decreases noticeably with the increase in roof pressure. With the view of overcoming...

The conventional longwall mining system has been now widely adopted in underground mining of mildly dipping and thin orebodies with feeble immediate roofs in China and abroad, however, this method has defects inherent in its geomechanical properties. For instance, it suffers a comparatively higher mining cost due to large consumption of fine grade timber; moreover, the production output in tons per manshift decreases noticeably with the increase in roof pressure. With the view of overcoming of these shortcomings, the author proposes a new conception of improvement in the filling in rooms and pillars method. A structural layout is shown to give clear idea of the methodology. Size of rooms and pillars is determined chiefly by roof characteristics. Roofs subjected to tremendous gravitational force require larger pillars with smaller rooms and vice versa. In mining process, ore is blasted and mucked out at first, then the immediate roof is shot off by retreating blast to fill the emptied rooms. Haulage of broken ore is performed by either scrapers or LHD machines depending on the dip inclination of the orebodies. Mechanical loaders are suitable to the dip less than 15°, while scrapers may be used for dip steeper than 15°. The advantages of the new method are: (1) no timber consumption, (2) higher productivity at lower cost, and (3) further improvement in ore recovery.

目前国内外一般将长壁崩落法应用于不稳直接顶板缓倾斜薄矿体。此法的缺点是:(1)由于要消耗大量的优质木材,促使矿石成本增高;(2)随着直接顶板压力增加,生产工效急剧下降。针对这一情况,笔者提出房柱分采充填法新方案的建议。直接顶板的特性影响着房柱尺寸。在此法中,一般直接顶板压力大,需要保留较小矿房和较大矿柱;相反,则可以加大矿房尺寸和缩小矿柱尺寸。在房柱中首先回采矿体,再后退崩落直接顶板,以充填空区。矿房内运搬一般根据矿体倾角不同,选用大型电耙或装载机;装载机适用于15°以下,大型电耙适用于15°以上。这种新方法的优点是:(1)不需坑木支护;(2)高产低耗;(3)矿石回采率高。

This paper deals with an analysis of parameters in regard to rational extent of working area for underground hydraulic coal mining. It expounds the functional relation between the mining cost and the parameters of the working area. A discussion is made on the interrelationship among the driving cost, capacity of hydromonitor, rate of recovery and interval between drawing headings. A preliminary study is also conducted of the relation between the capacity of hydromonitor and the distance of...

This paper deals with an analysis of parameters in regard to rational extent of working area for underground hydraulic coal mining. It expounds the functional relation between the mining cost and the parameters of the working area. A discussion is made on the interrelationship among the driving cost, capacity of hydromonitor, rate of recovery and interval between drawing headings. A preliminary study is also conducted of the relation between the capacity of hydromonitor and the distance of its nozzle from the coal face.

本文是分析地下水采方法的经济合理采垛参数。文中阐明了吨煤成本与采垛参数的函数关系。探讨了掘进成本、水枪生产能力、回采率等与回采巷间距的关系。另外,还对水枪生产能力与喷咀至煤壁距离的关系作了初步探讨。

Based on analysis of mining costs, a formula for calculating the optimum length of fully mechanized longwall faces is derived and the relationship between the longitudinal length of the blocks and the cost of relocation of the face equipments and also that of driving of headings are listed. Taking into consideration of the current mining method, the performance and price of the equipments, the labour cost, the working and management levels etc., the optimum size of the blocks of fully...

Based on analysis of mining costs, a formula for calculating the optimum length of fully mechanized longwall faces is derived and the relationship between the longitudinal length of the blocks and the cost of relocation of the face equipments and also that of driving of headings are listed. Taking into consideration of the current mining method, the performance and price of the equipments, the labour cost, the working and management levels etc., the optimum size of the blocks of fully mechanized longwall faces can be determined.

作者通过对采煤成本的分析,推导出综采工作面经济上最佳长度的计算公式,并列出了工作面连续推进方向长度与搬家倒面费和采准巷道掘进费的函数关系式。然后根据我国当前采煤方法、设备性能和设备价格、工人工资、工人操作和管理水平等条件,应用这些公式,确定了综采工作面最佳长度和连续推进方向合理长度。

 
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