| 深井大跨度切眼施工方式研究 |
| |
| 引用本文： | 阚甲广,张农,李桂臣,王成,张冬华.深井大跨度切眼施工方式研究[J].采矿与安全工程学报,2009,26(2). |
| |
| 作者姓名： | 阚甲广 张农 李桂臣 王成 张冬华 |
| |
| 作者单位： | 中国矿业大学矿业工程学院,煤炭资源与安全开采国家重点实验室,江苏徐州,221116 |
| |
| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，国家重点基础研究发展规划(973计划)，煤炭资源与安全开采国家重点实验室开放研究基金 |
| |
| 摘 要： | 为了掌握大跨度切眼不同成巷方式对巷道围岩稳定性的影响,本文结合淮南谢一矿深井大跨度切眼支护难题,采用数值模拟研究了一次成巷、二次成巷与三次成巷3种开挖方式下切眼围岩变形特点与应力分布特征,研究结果表明:一次成巷、二次成巷底鼓小,但顶板下沉量大,且切眼周围应力集中程度很高,塑性区范围较大,三次成巷开挖方式切眼顶板下沉量较小、围岩塑性区较小,三次成巷更有利于围岩稳定.在谢一矿511C(3)大跨度切眼(8.4 m)采用三次成巷方式进行了现场试验,采用高强度锚杆锚索组合支护系统维护深井大跨度切眼,矿压观测表明,围岩变形在控制范围内,锚网支护结构可靠.
|
| 关 键 词： | 采矿工程 深井大跨度 三次成巷 矿压规律 |
Analysis of Excavation Method of Large Span Open-Off Cut in Deep Mine |
| |
| KAN Jia-guang,ZHANG Nong,LI Gui-chen,WANG Cheng,ZHANG Dong-hua.Analysis of Excavation Method of Large Span Open-Off Cut in Deep Mine[J].Journal of Mining and Safety Engineering,2009,26(2). |
| |
| Authors: | KAN Jia-guang ZHANG Nong LI Gui-chen WANG Cheng ZHANG Dong-hua |
| |
| Affiliation: | School of Mines;State Key Laboratory of Coal Resource and Mine Safety;China University of Mining & Technology;Xuzhou;Jiangsu 221116;China |
| |
| Abstract: | In order to master the effect of construction condition on stability of surrounding rock of large span open-off cut,we numerically simulated the characteristics of stress distribution and surrounding rock deformation of the open-off cut under the construction condition of once-tunneling,twice tunneling,and three-times tunneling so as to solve the problem of large span open-off cut in deep mine of Xieyi coal mine in Huainan.The result shows that 1) both the once tunneling and twice tunneling have a small flo... |
| |
| Keywords: | mining engineering large span in deep mine three times tunneling strata behavior regularity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
