采矿回采率低，资源浪费较严重；
The rate of mining recovery was low, and the resource was wasted seriously.
矿石回采率大幅提高，由原来的65%提升到79%。
急倾斜煤层的回采一直存在着回采率低、采后难以管理等实际问题。
There have been some problems such as low coal recovery and difficult management after coal mining in steep seam mining method.
针对复杂型锰矿特点，探讨了露天采矿提高回采率，降低采矿成本的方法。
In terms of the characteristics of complex manganese, this paper presents an approach to increasing the recovery percentage and reducing the mining cost.
回采率是衡量矿山生产技术管理、资源综合利用水平的一项主要的经济技术指标。
Mining recovery is a main economic-technical index to measure mine enterprise's levels of production management and resources comprehensive utilization.
煤炭资源是国家的宝贵财富，是不可再生资源，要合理开采利用煤炭资源，提高回采率。
The coal resource is a precious wealth of the country, and can not rebirth. So mining and using of coal resource should be reasonable in order to increase the recovery.
胶结充填采矿法安全性好、回采率高，为矿山技术进步、提高经济效益起到了积极作用。
The security of the stoping-cemented fill method is good and the rate of extraction is high. It has made the contribution for mine in technical progress and improving economic benefits.
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。
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.
基于水化学浓度质量平衡的计算结果表明，开采井中回灌水的平均回采率约为88.5%。
The calculation results, based on mass balance of chemical concentrations, indicate that the average recovery rate of injected water in the current production well LWN-4 is about 88.5%.
现有的大倾角厚煤层开采技术存在着一系列问题，从而导致煤矿回采率低，安全性差，成本高。
There are series problems exist in the existing thick seam mining technology with large dip Angle, thus cause low extraction rate, poor safety and high cost.
除此之外，在保护规划中根据其特点，指导其共(伴)生矿产的综合利用以及采矿回采率、采收率的提高。
In addition, protection planning, in accordance with its characteristics, to guide the total, comprehensive utilization of associated minerals and mining recovery rate, recovery improved.
为了减少煤炭损失，提高回采率，在加采到底煤较厚地段时，采取背杆落底技术措施，提高了采面资源回收率。
In order to reduce the coal loss and raise recovery ratio, the technique measures of backing poles and falling the bottom are adopted. The recovery rate of face resources is raised.
本文探讨了影响煤柱稳定性的因素，提出了采用锚杆支护加固煤柱减小煤柱尺寸提高房柱式采煤回采率的技术途径。
The factors affecting coal pillar stability are discussed, and the technical way reducing coal pillar size and enhancing recovery ratio is put forward by means of rock bolting.
针对复杂型锰矿开采提出了由露天转地下联合开采技术，与其它采矿方法相比较，这种方法提高了回采率，降低了采矿成本。
Comparing other ways in recovery to promote, this article suggests that the technology from open-are to underground might reduce the cost of deploiling ore.
无底柱分段崩落法贫化大是由现行放矿方式造成的，改用不贫化放矿后可使矿石贫化率在回采率不降低情况下大幅度下降到8％以下。
High dilution for sublevel caving is caused by existing drawing mode. Using thd undilutiondrawing can greatly decrease the ore dilution below 8% without decreasing recovery.
回采率系数核定不规范、征收管理规定的法律责任过于原则等问题，不同程度地影响或制约了矿产资源补偿费的征收入库，应引起注。
Some problems should be paid more attention, for they have influence or restrict on levy compensation of mineral resources to different extent.
本文研究对减小煤柱尺寸，提高房柱式采煤回采率具有明显的理论指导意义，对解决我国生产矿区面临的不规则区段煤层开采问题具有实际意义。
These studies have evident theoretical significance to decrease coal pillar size and enhance recovery ratio, and practical importance to solve the problems of irregular seam mining in our country.
微地震监测技术对确定采场覆岩“两带”高度、预报采场顶板破坏、预测煤与瓦斯突出，从而预防灾害发生、保证煤矿安全生产并提高资源回采率等具有重要意义。
Microseismic monitoring technique is of important meaning for the safety of coal mine, the prediction of the period of mining pressure and the increase of recovery rate.
微地震监测技术对确定采场覆岩“两带”高度、预报采场顶板破坏、预测煤与瓦斯突出，从而预防灾害发生、保证煤矿安全生产并提高资源回采率等具有重要意义。
Microseismic monitoring technique is of important meaning for the safety of coal mine, the prediction of the period of mining pressure and the increase of recovery rate.
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