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- Keywords heavy thick coal seam;acoustic emission （AE）;complex-variable environment;large scale mined-out area;dynamical destabilization; 特厚煤层;声发射（AE）;复变环境;大尺度采空区;动力失稳;
- heavy thick coal seam 特厚煤层
- 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。
- 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。
- 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。
- The fact shows that the single leg type shield support and the technology of discharging coal in the side is an efficient method of coal mining under the condition of steep thick coal seam. 通过井下生产实践表明：单腿支撑柔性掩护支架采煤法和侧向放煤技术相结合是开采大倾角厚煤层一个新的、有效的采煤方法。
- The movement of top coal and top roof is discussed with the data observed from the caving mining of deeply inclined thick coal seam with horizontal section in Zhaogezhuang colliery of Kailuan Group. 就开滦集团赵各庄矿在急倾斜厚煤层采用水平分段开采过程中的现场观测，探讨顶煤和顶底板运移。
- By trial of fully mechanized caving in relatively thinner thick coal seam in Y.J.L.Coal Mine, the problems in mining are raised and the ways to increase its unit production are discussed. 通过对云驾岭矿较薄厚煤层综放的开采实践,提出了开采中存在的问题,并对如何提高综放工作面单产进行了探讨。
- How to select road section shape, bolting parameter and roadway construction method in large section cut in thick coal seam according to production reality and bolting theory are introduced. 根据生产实践及锚杆支护理论,论述了在厚煤层大断面切眼中,如何进行巷道断面形状、锚杆支护参数的选择及其巷道的施工方法。
- Research has been in progress round the technology difficult problem that mines in the thick coal seam of extremely soft rock and easy self-ignition of TieFa coal industry group by this thesis.1. 本论文围绕铁法煤业集团小康矿极软岩层、易自燃厚煤层开采的技术难题进行了研究。
- Through comparing calculation of two plan which are mining overall height in one times and shise mining, the optimum one suitake for thick coal seam mining in Dongrong No.3 Coal Mine is determined. 通过一次采全高和分层开采两个方案的比较计算，功定了适合东荣三矿厚煤层开采的最佳方案。
- Research has been in progress round the technology difficult problem that mines in the thick coal seam of extremely soft rock and easy self-ignition of TieFa coal industry group by this thesis. 本论文围绕铁法煤业集团小康矿极软岩层、易自燃厚煤层开采的技术难题进行了研究。
- 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。
