|
|||||
|
|
| 预应力锚索支护参数优化研究在金川二矿区的应用 | |
| 引用本文： | 杨志强,高谦,王正辉.预应力锚索支护参数优化研究在金川二矿区的应用[J].岩土力学,2008,29(5):1361-1366. |
| 作者姓名： | 杨志强 高谦 王正辉 |
| 作者单位： | 1. 北京科技大学,北京,100083 2. 北京科技大学,北京,100083;金属矿山高效开采与安全教育部重点实验室,北京,100083 3. 金川镍钴设计研究院矿山分院,甘肃,金昌,737100 |
| 摘 要： | 针对金金川二矿区深部高应力采场巷道支护面临的困难,采用以预应力锚索为主要支护手段的综合控制技术,并在1 178 m分段巷道进行了现场试验研究.首先,基于工程经验,确定了长锚索支护的初步设计参数;然后,采用了数值分析方法,进行了正交数值试验和支护参数的优化设计,由此表明,对于Ⅲ类偏上的围岩(RMR=40)和受中等采动影响(β=1.20),预应力锚索长度应为6.5 m;对于受剧烈采动影响的1 178 m分段巷道,采用6.5 m长锚索支护,其稳定安全系数达到1.28,故5.5～6.5 m长的锚索可满足分段道的稳定要求. |
| 关 键 词： | 采场巷道 长锚索支护 数值模拟 优化设计 预应力锚索 支护参数 优化研究 金川二矿区 应用 Mine Jinchuan application parameters optimization cable prestressed 稳定安全系数 分段道 长度 采动影响 围岩 优化设计 数值试验 正交 方法 |
| 文章编号： | 1000-7598-(2008)05-1361-06 |
| 收稿时间： | 2006-09-25 |
| 修稿时间： | 2006年9月25日 |
Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2 |
|
| YANG Zhi-qiang,GAO Qian,WANG Zheng-hui.Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2[J].Rock and Soil Mechanics,2008,29(5):1361-1366. | |
| Authors: | YANG Zhi-qiang GAO Qian WANG Zheng-hui |
| Institution: | 1. University of Science and Technology of Beijing, Beijing 100083, China; 2. Key Laboratory of Ministry of Education on High Efficient and safety Mining for Metal Mines, University of Science and Technology of Beijing, Beijing 100083, China; 3. Mining Institute of Jinchuan Group Ltd., Jinchang 737100, China |
| Abstract: | Considering the support difficulty of the roadways with high stress zone in Jinchuan Mine No.2, a prestressed cable support technique is studied and adopted at 1 178 m sublevel in Mine No.2. The prime support parameters were first given with the help of engineering experiences. Then orthogonal numerical experimentation regression analyses were executed. The results show that pretressed cable with the length of 6.5 m should be used in the Ⅲ or stronger grade (with RMR of 40) surrounding rock or the tunnel affected by the mining lightly, as for the tunnel suffered from the mining seriously, cable supporting with length of 6.5 m can make the safety coefficients reach 1.28, therefore, cable with length of 5.5－6.5 m can meet the stability need of sublevel tunnel. |
| Keywords: | stope tunnel long cable supporting numerical stimulation optimization design |
| 本文献已被 维普 万方数据 等数据库收录！ | |
| 点击此处可从《岩土力学》浏览原始摘要信息 | |
| 点击此处可从《岩土力学》下载免费的PDF全文 | |