陕西煤炭2026，Vol.45Issue(8)：137-143,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.0821
特厚煤层顶煤放出规律及工艺优化
Release law and process optimization of top coal in extra-thick coal seams
段卓然 1蒋军军 1张广辉 1李哲2
作者信息
- 1. 煤炭科学技术研究院有限公司,北京 100013||煤矿灾害防控全国重点实验室,北京 100013
- 2. 中国矿业大学 能源与矿业学院,北京 100083
- 折叠
摘要
Abstract
To address the key technical challenge of low top coal recovery rate in China's fully mechanized top coal caving mining process,we investigate the impact of various mining parameters on top coal recovery efficiency and explores process optimization strategies.Using discrete element numerical simulation software,a computational model was developed to analyze the movement and extraction patterns of top coal under different drawing intervals and release methods.The findings indicate that,compared with a one-cut-one-release method,the two-cuts-one-release and three-cuts-one-release methods significantly improve top coal recovery.Based on actual mining conditions,the two-cuts-one-release method yields the best results.Additionally,the double-wheel staggered release method outperforms the other three methods in terms of top coal recovery rate.Coordinated optimization of drawing intervals and methods is an effective approach to enhance top coal recovery rates in fully mechanized top coal caving faces.For the specific mine conditions discussed in this study,the recommended combination is the"two-cuts-one-release"interval paired with the"double-wheel staggered"release method.This combined approach can significantly boost top coal recovery rates.关键词
特厚煤层/顶煤回收率/放煤步距/放煤方式Key words
extra thick coal seam/top coal recovery rate/drawing interval/coal caving method分类
矿业与冶金引用本文复制引用
段卓然,蒋军军,张广辉,李哲..特厚煤层顶煤放出规律及工艺优化[J].陕西煤炭,2026,45(8):137-143,7.
