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- Mining protective coal seam 开采保护层
- protective coal seam mining 保护层开采
- Numerical Simulation Study on Effects of Overlying Rock and Seam Far Way From Protective Coal Seam 远程下保护层开采煤岩体卸荷效应模拟研究
- Abstract: The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No.3 shaft are approached. 文摘:分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素,探讨了预防煤层的自燃着火的开采技术措施。
- The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No.3 shaft are approached. 分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素,探讨了预防煤层的自燃着火的开采技术措施。
- protective coal seam 保护层
- Usually for mining maximal coal resources,repeated mining is used especially in specially thick coal seam. 为了最大限度的开采煤炭资源,通常进行复采,尤其是特厚煤层。
- Water-coal mixture burst is a new mine disaster in exploiting steeply inclined thick coal seam mining. 摘要急倾斜厚煤层开采时发生的水煤体溃泄是一种新的矿井灾害。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- The example of the large dip angle and the coal seam group is the Yuexu area in Tangshan Mining Filiale. 大倾角、煤层群采煤设计以开滦唐山矿业分公司重点衔接区域岳胥区-680水平采区为设计对象。
- The Taiyuan Formation No.16 coal seam in Yanzhou coal mining area is researched with the micro study method systematically. 用微观研究的方法,对兖州矿区太原组16号煤层的煤相进行了研究。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- This study provides a scientific method about studying the gas content of the coal seam unmined and provides the basic data about the safe mining. 这为未开采煤层瓦斯含量的研究提供了科学方法,并为该煤矿的安全开采提供了基础资料。
- Mining on conditions that ponding at the same layer of Yongquan mine area,the method and relative technical parameters of leaving the safety protective coal rock pillar are introduced. 介绍了阳泉矿区在有同层积水威胁情况下开采,留设安全保护煤岩柱的方法和有关技术参数。
- Based on analysis of sedimentary facies of coal measures in Tiefa mining area, the erosion zones in the coal seam No.4 in Dalong mining area ar... 在对铁法矿区煤系沉积相分析的基础上,利用煤层顶板砂体等厚图对大隆井田4%23煤层中的冲刷带进行了预测;揭示了铁法矿区煤层冲刷带的总体分布规律。
- The caving of hard top coal of 4-2# coal seam in Tongchuan Jiaoping Coal Mining Area seriously impacts the production efficiency of the mine. 铜川焦坪矿区4-2%23煤层坚硬顶煤垮落破碎难题是严重影响矿井生产效益的"瓶颈"。
- Part roof fall accident cause is analyzed in flase top mining in No.5 Coal Seam of Pinggang Coal Mine.The prevention and cure measures are pointed out. 通过对平岗煤矿5%23煤在托伪顶回采时发生的局部冒顶事故原因的分析,提出了解决该问题的防治措施。
- 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。