The horizontal section top coal caving in steep seam is different from the gently inclined seam.
急斜煤层水平分段放顶煤开采与缓斜煤层不同,工作面沿煤层厚度的水平线布置,长度短。
The mine adopts a coal demolish feebleization technique beforehand to implement top coal caving.
沈阳蒲河矿, 在煤层硬度系数f=2~3, 并含有夹矸层的复杂煤层中, 采用顶煤预爆破弱化技术, 成功地实施了放顶煤开采。
Based on the physical phenomenon that the amount of the gamma ray radiation in rock is different from the amount of the gamma ray radiation in coal,the paper puts forward the method for coal rock detection in top coal caving.
基于岩层与煤层中存在的自然γ射线具有显著差异的特性 ,提出了用自然γ射线方法解决综采放顶煤开采放煤过程煤矸识别问题 ;分析了煤矿煤岩中自然γ射线分布特征及该方法的适用性 ;探讨了动态煤矸分界监测可行性和顶煤落放规律对煤矸识别的影
sublevel undercut caving method
分段下部掏槽崩落开采
induced block caving
阶段人工崩落开采法
The results show that the great plastic yield areas and pull failure areas are formed in the base structure with caved area extends.
结果表明,随矿岩崩落开采,崩落区下方岩层出现较大范围的塑性破坏区和拉破坏区。
Mechanism of capping rock collapse by no-pillar sublevel caving
无底柱分段崩落法开采顶板围岩崩落机理
Development of MCAI Courseware for Sublevel Caving;
无底柱崩落采矿法的MCAI课件的开发
Establishment of the Ventilation System of Sublevel Caving in Polylevel Mining
多中段开采分段崩落法通风系统的建立
MODEL TEST STUDY OF DEEP-HOLE INDUCED CAVING IN MINING ENVIRONMENT REGENERATION
开采环境再造深孔诱导崩落模型试验研究
sublevel blast-hole method
深孔分段崩落采矿法
Study on the Influence of the Shapes of Draw Bodies with Different Widths of Drift in Caving Method
崩落法开采中进路宽度对放出体形态的影响研究
A VISCO-ELASTIC MODEL FOR ANALYSIS OF GROUND SUBSIDENCE DUE TO UNDERGROUND MINING BY PILLARLESS SUBLEVEL CAVING METHOD
无底柱分段崩落法开采地表移动分析的粘-弹性力学模型
Mining design procedures of the deep mining process sublevel caving stoping method
无底柱分段崩落采矿法回采设计方法
top slicing combined with ore caving
下向水平分层崩落采矿法
Experimental Research on Small Segment Caving Mining Method in Qianhe Gold Mine
前河金矿小分段崩落采矿法试验研究
The masonry of the old building began to crumble.
旧楼房的砖石结构开始崩落。
The Research of Stope Blasting Parameter in Sublevel Caving Method with Large Space between;
大间距无底柱分段崩落法回采爆破参数的研究
Mining Theoretical Great Breakthrough of Sublevel Caving Method
无底柱分段崩落法采矿理论的重大突破
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
Control of the Stability of Drift of Non-pillar Sublevel Stoping in Gangli Iron Mine
港里铁矿无底柱分段崩落采矿中巷道稳定性控制