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| 余吾煤业轨道大巷破碎围岩控制技术 | |
| 引用本文： | 王政行,柏建彪,马长乐,赵培,景超.余吾煤业轨道大巷破碎围岩控制技术[J].煤矿安全,2012,43(4):49-52. |
| 作者姓名： | 王政行 柏建彪 马长乐 赵培 景超 |
| 作者单位： | 1. 中国矿业大学矿业工程学院,江苏徐州,221008 2. 山西潞安集团余吾煤业公司,山西长治,046103 3. 河南永煤集团有限公司,河南永城,476600 |
| 基金项目： | 煤炭资源与安全开采国家重点实验室自主研究课题资助项目，江苏高校优势学科建设工程资助项目，全国博士学位论文作者专项资金资助项目 |
| 摘 要： | 分析了破碎围岩弱面、水蚀、构造应力、大断面等因素对余吾煤业+400 m水平轨道大巷围岩变形破坏的影响,论述了轨道大巷两帮破坏诱发顶板变形的围岩破坏特征,进一步阐述了采用注浆加固减小帮顶围岩塑性区,锚杆支护提高了围岩的自承能力的锚注联合控制技术。矿压观测结果表明,注浆加固围岩弱面后,锚杆锚索初期快速承载,围岩最大表面位移约23 mm,控制效果显著。 |
| 关 键 词： | 轨道大巷 破碎围岩 破坏特征 锚注联合支护 |
Control Technology for Broken Surrounding Rock in Main Roadway of Yuwu Coal Industry |
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| WANG Zheng-hang,BAI Jian-biao,MA Chang-le,ZHAO Pei,JING Chao.Control Technology for Broken Surrounding Rock in Main Roadway of Yuwu Coal Industry[J].Safety in Coal Mines,2012,43(4):49-52. | |
| Authors: | WANG Zheng-hang BAI Jian-biao MA Chang-le ZHAO Pei JING Chao |
| Affiliation: | 1.School of Mining Engineering,China University of Mining and Technology,Xuzhou 221116,China; 2.Yuwu Coal Industry Co.,Ltd,Shanxi Lu’an Mining Group,Changzhi 046103,China; 3.Henan Yongcheng Coal Industry Group,Yongcheng 476600,China) |
| Abstract: | This paper analyzed the impact of the broken surrounding rock weak planes,water erosion,tectonic stress,a large cross-section and other factors on the surrounding rock deformation and failure of Yuwu coal industry +400 m level track main roadway,discussed the surrounding rock failure characteristics that track roadway two sides failure led to roof deformation,and elaborated furtherly the bolting and grouting combined control technology,in which grouting could reduce surrounding rock plastic zone of two sides and roof and anchor bolting improve self-supporting capacity of surrounding rock.The result of mine pressure observation showed that after grouting reinforced surrounding rock weak planes,in initial stage,bolt and anchor cable beard load quickly,the maximum surface displacement was about 23 mm,and the control effect was remarkable. |
| Keywords: | track main roadway broken surrounding rock failure characteristics combined supporting of bolting and grouting |
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