|
|||||
|
|
| 隧道围岩压力和锚杆轴力的特性分析 | |
| 引用本文： | 俞文生,刘学增,周敏.隧道围岩压力和锚杆轴力的特性分析[J].现代隧道技术,2010,47(1). |
| 作者姓名： | 俞文生 刘学增 周敏 |
| 作者单位： | 1. 江西交通工程咨询监理中心,南昌,330008 2. 同济大学建筑设计研究院,上海,200092 3. 同济大学地下建筑与工程系,上海,200092 |
| 摘 要： | 结合江西武吉高速公路隧道15个典型断面的监测信息.分析围岩压力和锚杆轴力的稳定值和稳定时间变化规律.结果表明,锚杆未能充分发挥支护作用,应加强锚杆锚固力;隧道位置、施工方法及围岩级别对围岩压力和锚杆轴力的稳定时间有影响.利用围岩压力经验公式计算值与实际监测值进行比较,分析了经验公式对实际隧道工程的适用性.结果表明,深浅埋法计算值比实测值大;系数法和普氏法计算值与实测值相近,但计算结果有赖于参数的选取;泰沙基法计算深埋隧道的围岩压力误差较大.考虑隧道埋深和围岩级别的影响,获得围岩压力与隧道埋深的乘幂关系,以及围岩压力与围岩级别的指数拟合公式.通过监测数据获得的一些规律性结论,可为隧道结构设计和结构计算提供参考. |
| 关 键 词： | 公路隧道 施工监测 围岩压力 锚杆轴力 稳定分析 |
Characteristic Analysis of Rock Pressures and Rock Bolt Forces Based on Monitoring |
|
| Yu Wensheng,Liu Xuezeng,Zhou Min.Characteristic Analysis of Rock Pressures and Rock Bolt Forces Based on Monitoring[J].Modern Tunnelling Technology,2010,47(1). | |
| Authors: | Yu Wensheng Liu Xuezeng Zhou Min |
| Institution: | Yu Wensheng1 Liu Xuezeng2 Zhou Min3 (1 Jiangxi Communication Engineering Consultation Supervision Center,Nanchang 330008,2 Architecture Design , Research Institute of Tongji University,Shanghai 200092,3 Department of Geotechnical Engineering of Tongji University,Shanghai 200092) |
| Abstract: | Variation of stable values and stable time of rock pressures and rock bolt forces was analyzed based on monitored data of 15 typical sections in Jiangxi Wuji highway tunnel. It was found that rock bolts were understressed and stable time of rock pressures and rock bolt forces were affected by tunnel overburdens, construction method and rock grades. The applicability of empirical formula to practical engineering was analyzed after comparing calculated values of rock pressures with measured ones. Results obta... |
| Keywords: | Highway tunnel Monitoring Rock pressure Rock bolt forces Stability analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |