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- Research on Complete Equipment of Fully-mechanized Mining and Caving Faces in Hard Thick Coal Seams 坚硬厚煤层综放工作面设备配套技术的研究
- Keywords hard thick coal seam;longwall top-coal caving;blasting parameters;fractal theory;recovery; 坚硬厚煤层;综放开采;爆破参数;分形理论;采出率;
- Research on the Technology of complete Sets of Equipment at the Fully-mechanized Coalface with Coal Caving under the Hard Thick Coal Seam 坚硬厚煤层综放工作面设备配套技术研究
- hard thick coal seams 坚硬厚煤层
- hard thick coal seam 坚硬厚煤层
- For decades the thick coal seams underneath it made Saarland a pawn in the power-games of Germany and France. 几十年来,萨尔州地下厚厚的煤层使得该州成为德国和法国权利游戏中的有利工具。
- When the organic fragments are abundant,then low ash,thick coal seams can be formed as allochthonous coal. 由于有机碎屑物质的密度低,在二次搬运和沉积过程中经过重力分异,有机碎屑通常富集在扇体顶部,形成异地煤层。
- 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。
- The safety system of extremely thick coal seam is built and the extremely thick coal seam with coal bumping tendency in Qianqiu coal mine is extr... 在此基础上建立了适合义煤千秋矿巨厚煤层冲击地压防治的安全开采体系;成功地进行了巨厚煤层的综放开采;从而为有冲击倾向巨厚煤层的安全开采提供了成功范例.
- 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。
- The equipment of mining overall height of thick coal seam in one times in Daxing Coal Mine and experiences of production manage am introduced. 介绍了大兴矿厚煤层一次采全高回采工作面的装备情况及生产管理方面的经验。
- 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。
- Shallow-reserved hard and thick coal seam 浅埋硬厚煤层
- To meet the needs of the development of shearers in heavy duty and thick coal seam,the megawatt low-speed high-torque drive unit test system is required. 针对采煤机向大功率、厚煤层方向发展的需求,研制开发低速大扭矩传动装置试验系统。
- Combining with the actual situation in Qianqiu coal mine, the technology for comprehensive gas treatment in spontaneously inflammable and specially thick coal seam is introduced. 结合千秋煤矿实际情况,介绍了易自燃特厚煤层瓦斯综合治理技术。
- Taken Xinhe Colliery 3101 workface as the concrete condition, phenomenon law of underground pressure in great-inclined thick coal seam mechanized top coal caving is studied. 本文以新河煤矿3101工作面为具体条件,研究了大倾角厚煤层综放开采矿压显现规律。
- To meet the requirement of mining technology innovation, as a developing trend, mining roadways in thick coal seams of Xinglongzhuang coal mine should be totally located in coal seam. 由此提出,为不断适应采煤工艺变革的要求,“全煤采区巷道布置方式”将是兴隆庄煤矿“厚煤层采区巷道布置方式”的发展趋势。
- Due to the special natural reserve conditions of steeply inclined short_interval thick coal seams,it is difficult to adopt mechanical mining and have severe influence between different coal seams. 急倾斜近距离厚煤层因其特殊的赋存条件,导致难以实行机械化开采且开采时煤层间相互影响严重。
- The thicker coal seams are located in a 10-15 kmwide belt along which the channel meanders. 较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。