露天煤矿倒堆条件下底部薄煤层柱式回采工艺研究

采矿与安全工程学报 ›› 2015, Vol. 32 ›› Issue (1): 73-77.

露天煤矿倒堆条件下底部薄煤层柱式回采工艺研究

中国矿业大学矿业工程学院，煤炭资源与安全开采国家重点实验室，江苏徐州 221116

收稿日期:2013-07-08 出版日期:2015-01-15 发布日期:2015-03-09
作者简介:马力(1986—），男，黑龙江省集贤县人，博士研究生，从事露天采矿和矿山爆破工程方面的研究。
基金资助:
国家自然科学基金重点项目(51034005）；教育部博士点基金项目(20100095110019）；江苏省普通高校研究生科研创新计划项目(CXLX13_950）

Study on pillar mining technique for bottom thin coal seam in surface coal mine adopting stripping technology

Received:2013-07-08 Online:2015-01-15 Published:2015-03-09

摘要/Abstract

摘要： 为了解决抛掷爆破-拉斗铲倒堆工艺条件下底部薄煤层的回采难题，根据倒堆工艺作业特征提出了露天薄煤层柱式回采工艺。推导出了薄煤层开采剥采比的计算公式，确定了适宜回采薄煤层的岩煤高度比，分析了露天薄煤层柱式回采工艺对工作线长度的要求。通过对黑岱沟露天煤矿9#煤回采参数的分析及现场应用，得出：在工作线长度为2 200 m时，每条采掘带可回收煤炭资源37.2万t，获得直接经济效益6 128万元；同时，对露天矿生产能力影响较大，如要兼顾生产能力要求和9#煤的资源回收，需在6#煤采至端帮时适当舍弃部分9#煤。

关键词: 露天开采, 抛掷爆破, 薄煤层, 柱式回采工艺

Abstract: In order to solve the problem of excavating thin coal seam beneath under the condition of casting blast and dragline stripping technology at the bottom of the surface coal mine, the surface pillar mining has been proposed according to working features of stripping technology. The stripping ratio formula of thin coal seam has been deduced, and the optimum ratio of rock height to coal height has been determined, the requirement to work line of the surface pillar mining has been analyzed as well. After analyzing excavating parameters of the pillar mining technology and its application in the 9th coal seam of Heidaigou surface coal mine, the results show that more than 372 thousand tons can be excavated during the working line is 2 200 m, and it can bring 61.28 million RMB. Meanwhile, the approach has a great influence on capacity, and part-length of 9th working line should be discarded when the 6th coal is extracted to the end-slope with considering production capacity requirement and the 9th coal resource recovery.

Key words: surface mining, casting blast, thin coal seam, pillar mining technology

马力，李克民，彭洪阁，丁小华，肖双双. 露天煤矿倒堆条件下底部薄煤层柱式回采工艺研究[J]. 采矿与安全工程学报, 2015, 32(1): 73-77.

MA Li，LI Kemin，PENG Hongge，DING Xiaohua，XIAO Shuangshuang. Study on pillar mining technique for bottom thin coal seam in surface coal mine adopting stripping technology[J]. Journal of Mining & Safety Engineering, 2015, 32(1): 73-77.

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