Top coal caving mining technique in thick coal seam beneath the earth dam

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• 作者：Wenbing Guo^a ; ^b ; Yi Tan^a ; ^{517237667@qq.com} ; Erhu Bai^a
• 关键词：Earth dam ; Thick coal seam ; Top coal caving mining ; Harmonic mining ; Mining damages and protection
• 刊名：International Journal of Mining Science and Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：27
• 期：1
• 页码：165-170
• 全文大小：1585 K
• 卷排序：27

文摘

It is important to study the mining technology under structures for raising the coal resources recovery ratio. Based on the geological and mining conditions, the top coal caving harmonic mining technique in thick coal seam beneath the earth dam was put forward and studied. The 5 factors such as the panel mining direction, panel size, panel location, panel mining sequence and panel advance velocity were taken into account in this technique. The dam movement and deformation were predicted after the thick coal seam mining and the effects of mining on the dam were studied. By setting up the surveying stations on the dam, the movement and deformation of the dam were observed during mining. By taking some protective measures on the dam, the top coal caving mining technique in thick coal seam beneath the earth dam was carried out successfully. The study demonstrates that harmonic mining in thick coal seam is feasible under the dam. The safety of the earth dam after mining was ensured and the coal resources recovery ratio was improved.