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- Keywords Slicer;Low coal seam;Mining practice; 刨煤机;薄煤层;开采实践;
- It was discovered that the gallium is more than marginal grade in content and enriched in lower coal seam and floor, and occurs mainly in diaspore. 发现样品中镓的加权平均含量超过边界品位，并在煤层下部和底板岩石中显著富集，其主要地质载体为硬水铝石。
- Keywords low coal seam;backstopping technique;Jinpushan Coal Mine; 煤薄层;回采工艺;晋普山煤矿;
- Research and Practice of Backstopping Techniques Adopted in 9# Low Coal Seam of Jinpushan Coal Mine 晋普山煤矿9%23薄煤层回采工艺研究与实践
- Mining Application of DBT Full Automation Slicer Technology in the Low Coal Seam of Xishan DBT全自动化刨煤机技术在西山薄煤层开采应用
- Measures to Improve Coal Quality in Mining of Low Coal Seams 薄煤层开采中提高煤质的措施
- low coal seam 薄煤层
- 150 times of water bursting had happened since the lower coal seam was mined in 1965. 摘要肥城矿区自1965年开采下组煤以来，曾先后发生过150余次出水。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- Complex coal seam roof and floor conditions made stope support system low stiffness,poor stability and a very adverse the exploitation environment. 复杂的煤层顶底板条件使得采场支护系统刚度低、稳定性差,开采环境十分恶劣。
- The severe inclined thick coal seam,being its special geological storage conditions,is weakly extracted and the recovery rate is comparatively low. 急倾斜特厚煤层因其特殊的地质赋存条件,导致开采强度小,资源回收率低。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- A good brand and marketing advantage: The company now has developed the mine Jurassic coal seam produced with a low ash, high heat and other significant advantages. 良好的品牌和市场优势:公司目前拥有的矿井所开发的侏罗系煤层出产的煤炭具有低灰、高发热量等显著优点。
- Gas drainage in high gassy coal seam with low gas permeability is always an hard solved significant technology problem in the process of safety production. 高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题。
- 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。
- The coal seam of fully mechanized top-coal caving face 1151(3) in Xieqiao coal mine of Huainan mining area is soft and loose,and is of low permeability and poor wetting condition. 基于淮南矿区谢桥煤矿1151(3)综放面,煤层松软、渗透性低、湿润性差的特殊条件,采用煤层注水工艺技术降尘,在注水孔布置方式及参数、注水孔封孔工艺、注水工艺等方面采取一定的技术措施。
- 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。
- Analysis on the Principle of Making Complete Sets of Equipment on the Working Faces of the Coal Planer and Its Practicability in the Low Coal Seams 刨煤机工作面设备配套原则及在薄煤层的实用性浅析
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
