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- medium and thick coal seam 中厚煤层
- 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。
- Shallow-reserved hard and thick coal seam 浅埋硬厚煤层
- Gas Control on Caving Mining Face of Single and Thick Coal Seam 单一厚煤层放顶煤工作面的瓦斯治理
- On Properties of Loose and Deformation of the Coal around Roadway Dug in Loose-soft and Thick Coal Seam 煤巷围岩松动变形对边掘边抽的影响分析
- Current situation of the fully mechanized mining technology relating to large cutting height and thick coal seam 厚煤层大采高综采技术现状
- TESTING STUDY ON MINING OF WATERPROOF COAL PILLARS IN THICK LOOSE BED AND THICK COAL SEAM UNDER ULTRATHIN OVERLYING STRATA 厚松散层及超薄覆岩厚煤层防水煤柱开采试验研究
- STUDY ON SUPPORTING TECHNOLOGY OF ROADWAY ALONG GOB AREA IN ASOFT AND THICK COAL SEAM WITH FULLY-MECHANIZED SUBLEVEL CAVING SYSTEM AND ITS APPLICATION 软煤层综放沿空巷道支护技术研究及其应用
- Research on the weakening technology and the drawing law of top-coal in western shallow-reserved hard and thick coal seam 西部浅埋硬厚煤层顶煤弱化技术与落放规律研究
- 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.
- Such yarn is suitable for medium and thick fabrics, such as Zhongping cloth, gabardine, khaki and so on. 此类纱线适于中厚织物，如中平布、华达呢、卡其等。
- 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。
- High efficiency iron powder low hydrogen type electrode which is suitable for welding key structure of medium and thick plate. 低氢型药皮高效铁粉焊条,适于焊接重要的中厚板结构,可提高熔敷效率。
- 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。
- One of the crucial elements influencing the rock burst is the structure of roof rock stratum, especially the flinty and thick sandstone roof over the coal seam. 顶板岩层结构,特别是煤层上方坚硬、厚层砂岩顶板是影响冲击矿压发生的主要因素之一。
- Step to incress output rate of fully mechanized top coal caving in extra toughness and thickness coal seam 提高高韧性特厚煤层综放开采采出率措施
- 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。
