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- Soft Coal Seam Winning in High Gas Area 高瓦斯区松软煤层沿顶布巷综放回采
- Research of bolting in soft coal seam with high earth stress 高地应力松软煤层锚杆支护应用研究
- Roof Control of Tunnls of Full-mechanized Caving Mining Face in Soft Coal Seam 软煤层综放工作面两巷顶板管理
- Foam Fluid's Application on Drilling in Soft Coal Seam for Gas Drainage 泡沫冲洗液在松软煤层中钻进瓦斯抽放孔的应用
- Mechanism of the rib spalling and the controlling in the very soft coal seam 极软厚煤层煤壁片帮与防治机理
- Study on technique of coal seam infusion in soft coal at Xiandewang Coal Mine 显德汪矿软煤层综采工作面煤层注水工艺研究
- Analyzing the layout and the construction of the cut in top-coal caving face of soft coal seam 软煤层综放切眼布置设计及施工工艺探析
- Top coal caving technology in high inclination-angled soft coal seam with hard roof and soft bottom 坚硬顶板软煤软底大倾角综放开采技术
- Innovation and Application of Deep-hole Drilling Technology in Outburst Soft Coal Seam 突出松软煤层深孔打钻工艺的创新与应用
- Applied Study of Secondary Support Technique for Development Roadway in Soft Coal Seam 软煤层开拓巷道二次支护技术的研究
- Keywords three soft coal seam;concentrated force;creeping way;infusing water to prevent outburst; 关键词三软煤层;集中应力;蠕变状态;注水防突;
- The study on coal face stability and movement behavior of the overlying rock strata of longwall top-coal caving in the soft coal seam 极软煤层综放面围岩稳定性离散元模拟
- Experiment of supporting with meshing and bolting for entry driving along gob side within soft roof, soft floor and soft coal seam 煤层沿空掘巷锚带网支护的应用研究
- Soft coal burns with more flames than hard coal. 烟煤燃烧时火焰较无烟煤多。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- But the pubic only has soft coal, no any char. 可公家只有烟煤，没有干炭。”
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- We also supply blind coal and soft coal from China and Indonesia. 煤炭产品主要是无烟煤与有烟煤等。
- 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。
- 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。
