| 综放开采覆岩“两带”高度的计算公式及适用性分析 |
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| 引用本文： | 许延春,李俊成,刘世奇,周霖. 综放开采覆岩“两带”高度的计算公式及适用性分析[J]. 煤矿开采, 2011, 16(2) |
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| 作者姓名： | 许延春 李俊成 刘世奇 周霖 |
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| 作者单位： | 中国矿业大学(北京)资源与安全工程学院,北京,100083 |
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| 基金项目： | 国家"973"计划支持项目,2010年国家安监总局关键技术重点科技项目 |
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| 摘 要： | 当前所依据的《三下采煤规程》中没有预计综放开采工作面覆岩破坏高度的经验公式,为了合理留设特厚煤层综放开采工作面露头区安全保护煤岩柱,有必要建立适用于综放开采工作面覆岩导水裂缝带和垮落带高度计算的经验公式。依据项目的实测"两带"成果,并且收集了40余个"两带"孔的综放开采工作面不同硬度类型覆岩的"两带"高度数据,采用数理统计回归分析的方法,得出了适用于综放开采工作面中硬、软弱覆岩条件下的"两带"高度计算的经验公式,并进行了实用性分析。研究成果对含水层下特厚煤层综放开采工作面浅部安全开采和保护煤岩柱的合理留设有指导意义和实用价值。
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| 关 键 词： | 综放开采 “两带”高度 计算公式 适用性 |
Calculation Formula of "Two-zone" Height of Overlying Strata and Its Adaptability Analysis |
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| XU Yan-chun,LI Jun-cheng,LIU Shi-qi,ZHOU Lin. Calculation Formula of "Two-zone" Height of Overlying Strata and Its Adaptability Analysis[J]. Coal Mining Technology, 2011, 16(2) |
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| Authors: | XU Yan-chun LI Jun-cheng LIU Shi-qi ZHOU Lin |
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| Affiliation: | XU Yan-chun,LI Jun-cheng,LIU Shi-qi,ZHOU Lin(Resources & Safety School,China University of Mining & Technology(Beijing),Beijing 100083,China) |
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| Abstract: | There is not experiential formula for predicting breakage height of overlying strata over full-mechanized caving mining face in current Regulation.It is necessary that setting up experiential formulae for predicting two-zone height of full-mechanized caving mining face to instruct protective pillar design.Based on observation result and data from 40 boreholes in full-mechanized caving mining faces with different hardness surrounding rock,experiential formulae of two-zone heights fit for medium-hard and soft... |
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| Keywords: | full-mechanized caving mining two-zone height calculation formula applicability |
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