| 8.5 m大采高工作面矿压显现规律数值模拟研究 |
| |
| 引用本文： | 吴建军,肖江,杨浩,郝强强,张思达.8.5 m大采高工作面矿压显现规律数值模拟研究[J].中国煤炭,2019(4):72-76. |
| |
| 作者姓名： | 吴建军 肖江 杨浩 郝强强 张思达 |
| |
| 作者单位： | 西安科技大学能源学院;教育部西部矿井开采及灾害防治重点实验室;神东煤炭集团有限责任公司上湾煤矿 |
| |
| 摘 要： | 研究浅埋巨厚煤层大采高综采工作面矿压规律和支架阻力,是实现安全高效开采的前提。根据煤岩的力学性质,运用数值模拟软件FLAC3D,从工作面顶板位移和应力变化特征、采场覆岩的空间变形破坏和运移特征和工作面支架阻力变化3个方面,研究了特厚煤层与厚煤层的矿压规律和支架阻力变化异同点。结果表明,工作面顶板位移随推进度呈近似线性变化,推进到130～140 m达到极限值,随后趋于稳定。应力变化出现明显的分区现象;采场覆岩空间整体呈现"O"型下沉破坏,地面出现锅底型式台阶;工作面支架阻力呈现大小交替的周期规律型变化,最大阻力相近。经过对工作面矿压规律和支架阻力的数值模拟分析,确定了厚煤层与特厚煤层在矿压及支架阻力变化方面具有相似的规律变化,而在来压步距和最大阻力值等整体数值方面特厚煤层比厚煤层呈现更大增长趋势。
|
| 关 键 词： | 特厚煤层 数值模拟 大采高 矿压规律 支承阻力 |
Research on numerical simulation of mine pressure behavior laws of 8.5 m mining height work face |
| |
| Wu Jianjun,Xiao Jiang,Yang Hao,Hao Qiangqiang,Zhang Sida.Research on numerical simulation of mine pressure behavior laws of 8.5 m mining height work face[J].China Coal,2019(4):72-76. |
| |
| Authors: | Wu Jianjun Xiao Jiang Yang Hao Hao Qiangqiang Zhang Sida |
| |
| Affiliation: | (School of Energy Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Shangwan Mine,Shendong Coal Group,Ordos,Inner Mongolia 017209,China) |
| |
| Abstract: | Wu Jianjun;Xiao Jiang;Yang Hao;Hao Qiangqiang;Zhang Sida(School of Energy Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Shangwan Mine,Shendong Coal Group,Ordos,Inner Mongolia 017209,China) |
| |
| Keywords: | extra-thick coal seam numerical simulation large mining height mine pressure law support resistance |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
