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- Influence of Gob Shield Angle on Top Coal Recovery Ratio 综放支架掩护梁角度对顶煤回收率的影响
- Improving Top Coal Recovery Ratio in Full-mechanized Sublevel Caving Faces by Long-hole Controlling Presplitting Blasting Technology 利用深孔控制预裂爆破技术提高综放工作面顶煤回收率
- top coal recovery ratio 顶煤采出率
- The top coal's recovery ratio in fully-mechanized sublevel caving face controls the stowing degree of the goaf, thereby influences the stability of hard and massive overlying roof. 摘要综放采场顶煤放出率控制着采空区的充填状况,从而影响着大厚度坚硬顶板的稳定性。
- It is key problem to raise the top coal recovery rate of the fully mechanized sublevel caving mining. 提高顶煤放出率是综放开采的一个重大课题,预注水弱化顶煤是解决这一问题的有效方法之一。
- Measures to Raise Recovery Ratio of Resources in Working Face of Fully Mechanized Top Coal Caving 提高综放工作面回采率的措施
- STUDY ON RELATIONSHIP BETWEEN ROOF STABILITY AND TOP COAL's RECOVERY RATIO DURING CYCLIC WEIGHTING IN FULLY-MECHANIZED SUBLEVEL CAVING FACE 综放采场周期来压阶段顶板结构稳定性与顶煤放出率的关系
- Study on relationship between roof stability and recovery ratio of top coal at first weight period in fully-mechanized sublevel caving face 综放采场初压阶段顶板稳定性与顶煤放出率关系探讨
- top coal's recovery ratio 顶煤放出率
- Study and test for recovery rate of the top coal in fully mechanized face using caving method and the methods for raising the coal recovery rate 综放面顶煤回收率试验研究及提高回采率的途径
- Keywords coal caving mining;agglomeration;coal caving ratio;coal recovery ratio;distortion rule; 放顶煤开采;块度;放出率;煤炭回收率;变形规律;
- top coal recovery rate 顶煤采出率
- coal recovery ratio 煤炭回收率
- The standard add recovery ratio was 92.6%,RSD was(n=11)<7.5%. 标准加入回收率为92.;6%25。 变异系数(n=11)<7
- After using the fuzzy-PID control system,the stability of the refined coal quality is guaranteed and the recovery ratio is increased. 选用基于模糊理论的PID控制系统后,有力地保证了精煤质量的稳定和回收率的提高。
- CAO Yu-xunThe clean coal recovery has increased by 6.8% at Shenhua Group Co. through the recovery of clean coal lost in middlings by using middlings rewash system. 神华集团乌达矿业公司凯鸿煤化有限责任公司通过增加中煤再洗系统;回收中煤中损失的精煤;从而使精煤回收率提高了6.;8%25。
- Determined results at those conditions indicate that the RSD is 4.96% and the recovery ratio is between 99.3% and 104%. 加标回收率为99.;3%25-104
- To enhance recovery ratio, it is necessary to have a better understand on the micro-heterogeneity of reservoir. 要提高这部分油层的采收率,必须加强对储层微观非均质性的认识。
- The minimum detection limit of this method is 1.5 Bq/L, The precision is 10% , The recovery ratio is 97% - 100% . 方法的检测限为1.;5Bq/L;精密度为10%25;放化回收率为97%25-100%25。
- After reducing smelt spent lithium ion battery in arc furnace,the recovery ratio of cobalt and coppe... 用电弧炉还原熔炼后;钴回收率78.;63%25;铜回收率81