长壁工作面过空巷顶板稳定性动态特征研究
Study on Stability and Dynamic Characteristics of Roof in Mining Face Crossing Abandoned Roadways
-
摘要: 以国内某大型矿井工作面过空巷为工程背景，在分析工作面顶板物理模型的基础上建立其稳定性力学模型，分析顶板稳定性和煤柱稳定性的关系，并通过数值计算和现场观测验证。研究表明相同条件下采高越大、控顶距越大，工作面顶板下沉量越大；工作面过空巷顶板稳定性受煤体支撑力和工作面支架支撑的影响，煤体的支撑能力又影响着顶板结构的稳定；工作面过空巷应提前使工作面与空巷走向保持倾斜、并尽量降低采高，对空巷两帮采用玻璃钢锚杆支护煤体以提高煤体承载能力，在工作面临近时采用液压支柱支护顶板。Abstract: Taking a large domestic coal mine working face crossing abandoned roadway as the engineering background, and the stability mechanics model is set up based on the analysis of working face roof physical model. On the basis of analysis of roof stability and the stability of coal pillar, and through numerical calculation and on-site observation, research shows that the greater of mining height and control distance from the top is, the greater of the roof subsidence is under the same conditions; the stability that working face passes through abandoned roadway is affected by coal body support and face support, supporting capacity and properties affect the stability of the roof structure; working face crossing abandoned roadway should keep working face and the abandoned roadway trend to tilt in advance, and try to reduce the mining height broken; FRP bolt support should be used for two walls of abandoned roadway in order to improve the bearing capacity of coal, hydraulic pillar is used to support roof when working face is close to abandoned roadway.
-
Keywords:
- abandoned roadway /
- roof /
- surrounding rock stability /
- support /
- numerical simulation
-
-
[1] 柏建彪, 侯朝炯. 空巷顶板稳定性原理及支护技术研究[J].煤炭学报,2005, 30(1):8-11. [2] 孔明俊. 回采工作面过空巷技术研究和应用[J].建井技术, 2012, 33(4): 34-36. [3] 赵斌. 高档工作面过空巷的技术方法[J].煤炭技术,2008, 27(10):23-25. [4] 蔡美峰，何满潮，刘东燕. 岩石力学与工程[M].北京：科学出版社，2002. [5] 钱铭高，石平五. 矿山压力与岩层控制[M].徐州：中国矿业大学出版社，2003. [6] 牛少卿. 长壁开采三顺槽围岩控制理论技术研究[D].太原：太原理工大学，2011. -
期刊类型引用(6)
1. 宋佳林. IPSO-TS算法在矿井通风网络风量优化中的应用研究. 矿业安全与环保. 2022(02): 78-82 . 
百度学术
2. 贾小婷. 煤矿通风安全监测系统的设计分析. 当代化工研究. 2021(16): 69-70 . 百度学术
3. 白铭波，姚亚虎，罗广，高军伟. 智能通风技术在韩家湾煤矿的研究与应用. 矿业安全与环保. 2021(05): 87-91+95 . 百度学术
4. 张燕峰. 矿井主节能通风系统的配置及其功能的实现. 机械管理开发. 2020(11): 237-238+271 . 百度学术
5. 罗广，邹银辉，宁小亮，靳妮倩君. 矿井通风网络在线监测技术研究与应用. 矿业安全与环保. 2019(05): 47-50+55 . 百度学术
6. 陈亚. 矿井通风安全监测监控系统主要技术探讨. 内蒙古煤炭经济. 2019(17): 144 . 百度学术
其他类型引用(6)
计量
- 文章访问数: 465
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 12
下载:
