| 西部浅埋硬厚煤层顶煤弱化技术与落放规律研究 |
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| 引用本文： | 富强.西部浅埋硬厚煤层顶煤弱化技术与落放规律研究[J].煤矿开采,2005,10(4):1-4,44. |
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| 作者姓名： | 富强 |
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| 作者单位： | 天地科技股份有限公司,开采所事业部,北京,100013 |
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| 基金项目： | 国家科技部“十五”攻关资助项目（2003BA612A-11-1） |
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| 摘 要： | 通过理论分析与数值计算,研究了浅埋硬厚煤层综放开采顶煤的冒放性和散煤落放煤矸分界。提出了相应的顶煤弱化技术方案,并结合现场工业性试验,验证了方案的可行性。研究发现,支架上方松散顶煤存在“落放”两个过程,由于支架放煤口见矸点的周期性上下浮动,采空区煤损具有一定的周期性。
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| 关 键 词： | 浅埋硬厚煤层 综放开采 顶煤弱化 煤矸分界 |
| 文章编号： | 1006-6225（2005）04-0001-04 |
| 收稿时间： | 2005-05-30 |
| 修稿时间： | 2005-05-30 |
Research on the weakening technology and the drawing law of top-coal in western shallow-reserved hard and thick coal seam |
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| FU Qiang.Research on the weakening technology and the drawing law of top-coal in western shallow-reserved hard and thick coal seam[J].Coal Mining Technology,2005,10(4):1-4,44. |
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| Authors: | FU Qiang |
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| Abstract: | Based on the data of theoretical analysis and numerical calculation, the paper studies on the caving ability and drawing degree of top-coal in shallow-reserved hard and thick coal seam adopted longwall with top-coal caving mining. Different top-coal weakening technologies are suggested and proved to be effective in field tests and a new concept of loosing top-coal falling and caving is also put forward in this paper. Study indicates the loss of top-coal in gob has periodicity as the periodically moving of the first caving rock in the loosing coal-rock mixture above the drawing opening of hydraulic support. |
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| Keywords: | Shallow-reserved hard and thick coal seam Longwall with top-coal caving Top-coal weakening Interface of drawn rock and coal |
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