| 地应力在石门揭构造软煤诱发煤与瓦斯突出中的作用 |
| |
| 引用本文： | 高魁,刘泽功,刘健.地应力在石门揭构造软煤诱发煤与瓦斯突出中的作用[J].岩石力学与工程学报,2015,34(2):305-312. |
| |
| 作者姓名： | 高魁 刘泽功 刘健 |
| |
| 作者单位： | (1. 安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001；
2. 安徽理工大学 能源与安全学院，安徽 淮南 232001) |
| |
| 基金项目： | 国家自然科学基金资助项目(50974004);安徽理工大学引进人才科研启动基金资助项目(ZY027) |
| |
| 摘 要： | 在基于相似模拟试验思想和地质力学模型试验新思路的基础上，在实验室搭建大型石门揭煤的煤与瓦斯突出试验平台，利用该试验平台研究石门揭构造软煤过程中煤岩应力的变化规律，同时结合数值模拟分析地应力在石门揭构造软煤诱发煤与瓦斯突出中的作用。结果表明：在石门揭煤过程中巷道前方围岩存在明显的应力集中，使煤体中积聚弹性潜能，增加煤体的瓦斯压力梯度，为突出的准备和孕育提供能量基础；发现地质构造断层附近存在明显的构造应力异常区并与由后期开挖导致的应力集中相互叠加，有利于形成自构造软煤向周围煤层深部扩展的大型突出。
|
| 关 键 词： | 采矿工程煤与瓦斯突出模拟试验地质构造石门揭煤地应力 |
| 收稿时间： | 2014-01-03 |
EFFECT OF GEOSTRESS ON COAL AND GAS OUTBURST IN THE UNCOVERING TECTONIC SOFT COAL BY CROSS-CUT |
| |
| GAO Kui;LIU Zegong;LIU Jian.EFFECT OF GEOSTRESS ON COAL AND GAS OUTBURST IN THE UNCOVERING TECTONIC SOFT COAL BY CROSS-CUT[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(2):305-312. |
| |
| Authors: | GAO Kui;LIU Zegong;LIU Jian |
| |
| Affiliation: | (1. Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry，Anhui University of Science and Technology，Huainan，Anhui 232001，China；2. School of Energy and Safety，Anhui University of Science and Technology，Huainan，Anhui 232001，China) |
| |
| Abstract: | An experimental platform to simulate the coal and gas outburst of large scale coal uncovering by cross-cut was built in laboratory based on the similarity laws and geological mechanics. The laboratory model tests and the numerical calculations were carried out to simulate the process of soft coal uncovering by cross-cut. Stress concentration exists in the surrounding rock ahead of the working face in the process of tunnel excavation. The elastic potential energy is accumulated in coal because of the stress concentration，which is the energy preparation and inoculation for outburst. The tectonic stress concentration area occurs in the vicinity of geological structure faults. The concentrated tectonic stress and the concentrated stress due to excavation superposed together lead to deeper and larger outburst in soft coal. |
| |
| Keywords: | mining engineering coal and gas outburst simulation experiment geological structure coal uncovering by cross-cut crustal stress |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩石力学与工程学报》浏览原始摘要信息 |
|
点击此处可从《岩石力学与工程学报》下载全文 |
