1)recovery ratio回采率
1.Ways on improving top coal recovery ratio in fully-mechanized caving mining face;提高综放工作面顶煤回采率的途径
2.Influencing factors and improving methods for recovery ratio of sub-level caving coal blasting mining;炮采放顶煤回采率影响因素与提高方法
3.For coal bed of f=3,the research should focus on the lump coal rate;for coal bed of f=4-6 and above,the research should focus on enhancing the recovery ratio.对于f=3左右的煤层,重在研究提高块煤率;f=4-6及以上的煤层,重在研究提高回采率。
英文短句/例句
1.It shall see to it that the recovery rate and impoverishment rate in mining and recovery rate in ore-dressing meet the design requirements.矿山企业的开采回采率、采矿贫化率和选矿回收率应当达到设计要求。
2.Adopting a Number of Effective Measures to Increase Coal Resources Recovery Rate;采取各项有效措施 努力提高煤炭资源回采率
3.Calculation Method of Annual Mining Recovery Index in Mining Enterprise;谈矿山企业制定年度开采回采率指标的方法
4.Increasing Rate of Coal Mining with Improving Coal Caving Technology at Fully Mechanized Face改进综放工作面放煤工艺提高回采率
5.(2) difficult prop (supporting) management, much resource loss and low recovery;(2) 支柱(护)管理困难，资源损失多，回采率低；
6.Tax and Fees Collection Measure of Enhancing Total Recovery Coefficient of Coal Mining;提高煤炭资源总回采率的税费征收方式
7.Increasing of ore recovery rate and decreasing of ore loss & dilution rate in the case of pillarless sublevel caving浅析无底柱分段崩落法提高矿石回采率
8.The Significance of Ratio of Mining Recovery and Its Influences on Charge of Compensation Tax for Mineral Resources;开采回采率系数的意义及其对矿产资源补偿费影响的探讨
9.This method can improve the ore extraction rate and reduce the ore dilution rate and has been found to be a rational mining method for the mine.该方法提高了矿石的回采率，降低了矿石的贫化率，为矿山寻找出一条合理的开采方法。
10.Probe into Improving Recovery Ratio of Caving Coal at π Steel Beam Caving Coal Face by Deep Hole Pre-Fracture Blasting深孔预裂爆破提高π型钢梁放顶煤回采率可行探讨
11.The rate of extraction for coal resources shall be determined by the department in charge of the coal industry under the State Council in light of the different resources and mining conditions.煤炭资源回采率由国务院煤炭管理部门根据不同的资源和开采条件确定。
12.The improvement of recovery rate of gold and copper by using flash flotation采用闪速浮选提高金、铜的选矿回收率
13.Study on top-coal recovery in full-mechanized by similarity simulation综放开采顶煤回收率的相似模拟研究
14.Optimizing Mining Design Technics and Improving Resource Rate of Recovery优化开采设计工艺 提高资源回收率
15.Research on Relationship of Mining Height and Recovery of Top-coal in Full-mechanized Caving Mining综放开采割煤高度与顶煤回收率相互关系研究
16.Second Mining Is an Effective Way for Small and Medium-sized Coal Mines to Increase the Coal Recovery Rate复采是中小煤矿提高煤炭回收率的有效途径
17.A Design of Digital Video Collector, Communication, Replay System with Wavelet;一种基于小波变化编码的视频低速率采集、传输和回放系统的设计
18.Study on Relationship between Depositing Characteristic of Falling Waste and Top Coal Recovery in Full-mechanized Caving综放开采冒落矸石堆积特征与顶煤回收率关系研究
相关短句/例句
Recovery rate回采率
1.Using the probability of improved recovery rate,the number and extent of adjustment and the new recovery rate,recovery rate uncertainty is described.回采率是储量不确定的重要参数之一。
2.When the fully mechanized caving mining is put into practice in the medium hard coal seam,the high-pressure water injection is carried out,the coal nature is softened,the recovery rate is significantly raised.在中硬煤层中实施放顶煤开采时,对煤层打钻进行高压注水,软化煤质后回采率明显提高。
3)mining rate回采率
1.Discussion on ways to increase mining rate in fully mechanized top-coal caving working face;综采放顶煤工作面提高回采率途径的探讨
2.The several methods of increasing the mining rate of coal faces are stated from these aspects: improving the techniques of blasting coal down the roof,using suitable facilities,self-developing coal-saving machines,and making proper mining system.结合实际,系统地分析了影响轻放工作面回采率的各种因素,从改进放煤工艺增加配套设施、自行研制节煤器、合理开采设计等几个方面入手,阐述了提高轻放工作面回采率的几种途径。
3.In order to solve the contradiction of protecting the buildings on the ground and the mining rate of coal, the mining method of wide strip skip-mining is put forward by making the most of the advantages of both methods of the wide strip mining and full-pillar mining,and combined with the law of the ground move and deformation.为了解决保护地面建筑物与煤炭资源回采率的矛盾。
4)Rate of recovery回采率
5)extraction rate回采率
1.Lifting combined mining extraction rate;从多方面入手 提高综放采区回采率
2.Talking about the technology ways of lifting extraction rate;浅谈提高回采率的技术途径
6)mining recovery rate开采回采率
延伸阅读
回采率 在计算的区域（或计算范围）内采出的工业储量与报销的工业储量（即该区域的工业总储量）的百分比叫回采率；损失的工业储量与报销的工业储量的百分比叫矿石损失率。这两个指标从数量上表示地下资源的利用程度。根据计算范围的大小，可分为工作面（见回采工作面）、采区（矿块）、阶段和全矿回采率。中国矿山管理部门对不同矿床的回采率都有相应的规定，以保证资源的充分回收。非煤地下矿山常用有用成分回采率，即采出工业储量中的有用成分含量与报销工业储量中的有用成分含量的百分比来表示资源的利用程度。有用成分损失率为损失的有用成分含量与报销工业储量中的有用成分含量的百分比。 矿石损失 分设计损失和生产损失两类。前者主要是矿山设计中规定不采的各种保安矿柱。后者包括矿山生产期间因地质变化采不出的部分矿体或煤层，维护采场、巷道及地质构造破坏所保留的矿柱，因深孔位置布置不当未崩下的矿石，出矿过程遗留在底板和充填料中的损失，因废石大量混入，停止放矿留在崩落采场的损失，运输过程中的洒落损失和其他管理不善造成的损失。矿石损失除降低资源利用效果外，将增加每吨采出矿石的开拓、采准、折旧和管理等的摊销费用。大量矿石损失将缩短矿山服务年限，并可能造成冲击地压和自燃发火等隐患。 矿石贫化 采矿过程中采出的矿石因混入废石，使矿石品位降低的现象。矿石贫化将增加运输和加工费用，降低矿石加工部门的生产能力和回收率。如废石中含有有害杂质，将降低最终产品质量。 矿石损失率和贫化率 在露天开采中，两者一般在5％以下,低于地下开采很多。不同地下采矿方法的损失率和贫化率也相差很大，如充填法可能降至5％以下,而分段和阶段崩落法常大于15％。有的采矿方法如分段和阶段崩落法，减少矿石损失时，则贫化增大。20世纪50年代以来，各国广泛采用高强度、低成本的地下采矿方法开采较贫的矿体，损失和贫化指标都较高。 贫化率可根据工业矿石品位和采出矿石品位直接算出。如能直接测定采出矿石量、损失矿石量和混入废石量，可直接算出回采率和废石混入率，如不能直接测定，则用下式间接计算： 式中：Q为工业储量,c为工业储量的品位，T为采出矿石量，a为采出矿石的品位，b为混入废石的品位。在设计中，多根据条件类似的矿山来选用采矿方法的损失和贫化指标。设计规定不采的矿石，损失指标可直接算出。 降低矿石损失和贫化指标的措施 加强地质测量工作，提供可靠的地质资料；正确选择采矿方法及其构成要素；合理圈定保安矿柱；选用正确的开采顺序；及时回采矿柱和处理采空区；合理选用覆岩下的放矿方案和放矿制度;注意减少采场中和运输过程中的粉矿损失;加强生产管理和统计工作。
