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- The main coal seam of Taiping colliery is 11~# coal seam with a thickness of 1.5 m. 太平煤矿主采11%23煤层;煤厚1.;5 m
- The sulfur occurrence,content and genetic feature in the main coal seams,Buya Coal Mine,are analyzed with the macroanalysis,microanalysis and coal chemical m ethods. 从宏观、微观和煤化学几个方面,研究了新疆和田县布雅煤矿一号井田主采煤层中硫的赋存形态、含量、变化规律及成因。
- The paper has quantitatively studied the evolution history of coalbed methane(CBM) of main coal seams in Liulin Mining Area of Hedong Coalfield by using numerical simulation method. 运用数值模拟方法对河东煤田柳林矿区主煤层煤层气地质演化史进行了定量模拟研究。结果表明:研究区内煤层气演化史可分为三个阶段。
- Application of Magnetic Prospecting in Detecting the Boundary of Magmatite Intruded into Main Coal Seam 磁法在探测侵入主采煤层岩浆岩边界中的应用
- main coal seam 主煤层
- Its main mineable coal seam belongs to very thick coal seam.The coal seam texture and coal rank configuration are generally very complex. 主采煤层属巨厚煤层,其煤层结构和煤种结构一般都很复杂,按不同煤种进行分层开采,有利于煤炭资源合理利用。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- The main key stratum that is made up of the hard stratum covering over the coal seam has a great influence on rock burst. 摘要煤层上覆坚硬厚层岩层组成的主关键层对冲击矿压的发生具有强烈的影响。
- The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar. 第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上,其隔水性能影响到防水煤柱的合理留设。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated. 计算了沁水盆地3号煤层的高斯曲率。
- The coal spontaneous combustion in the goaf is one of the main coal disasters. 采空区煤炭自燃火灾一直是我国煤矿的主要灾害之一。
- Factors affected coal seam permeability change and its law is analyzed. 分析了煤层透气性变化的影响因素及变化规律。
- The outburst-proneness of 6# coal seam are studied with five indexes. 采用5种指标对该矿6%23煤层冲击倾向性进行了实验研究。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- Shanxi,Shaanxi,Inner Mongolia-China's main coal producers-chiefly rely on railway to ship out their output. 煤炭生产和供应以山西、陕西、内蒙古西为主；“三西”煤炭外运以铁路运输为主。
- The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed. 摘要论述了高斯曲率法预测煤层天然裂隙发育区的基本原理和方法。
- Shanxi, Shaanxi, Inner Mongolia-China's main coal producers-chiefly rely on railway to ship out their output. 煤炭生产和供应以山西、陕西、内蒙古西为主；“三西”煤炭外运以铁路运输为主。
- It is China's main coal, steel and textile industral base with a concentration of nationally well-known enterprises. 是全国重要的煤炭、钢铁、纺织工业基地，是众多全国知名企业集中地。
- Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over. 摘要突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。
