| 大跨度浅埋软弱围岩隧道施工工法比较 |
| Comparison of Construction Methods for Large span Shallow Weak rock Tunnel |
| 投稿时间：2012-01-06 |
| 中文关键词:隧道 浅埋 大跨度 双侧壁导坑法 微台阶留核心土法 |
| 英文关键词:tunnel shallow large span dual sidewall drift method micro steps with core soil method |
| 基金项目: |
|
| 摘要点击次数: 1679 |
| 全文下载次数: 2942 |
| 中文摘要: |
| 针对大跨度浅埋软弱围岩隧道施工问题，分析了双侧壁导坑法和微台阶留核心土法的技术特点和适用条件，双侧壁导坑法施工在控制围岩变形及地面沉降方面优于三台阶法,且产生的围岩塑性区较小,微台阶留核心土法在施工进度、资源利用、造价、工序转化及施工难度方面具有优势。结合工程实例，证实仅在围岩具有自稳能力并且可以机械开挖时，可以优先采用微台阶留核心土法，其它条件下宜采用双侧壁导坑法。 |
| 英文摘要: |
| Analyses are made of the technical characteristics and application conditions of dual sidewall drift method and micro steps with remaining core soil method for large span shallow weak rock tunnel construction. The dual sidewall drift method is better than the three step method in the control of the surrounding rock deformation and land subsidence and produces smaller plastic zone. Micro steps method has its advantage in construction schedule, resource utilization, cost, process transition, and the difficulty of construction. With an example, it is confirmed that priority can be given to the use of micro steps with remaining core soil only when the surrounding rock has a homeostatic capacity and mechanical excavation is feasible. The dual sidewall drift method should be used under other conditions. |
| 张永利.大跨度浅埋软弱围岩隧道施工工法比较[J].石家庄铁道大学学报(自然科学版),2012,(1):68-70. |
| 查看全文 下载PDF阅读器 |
|
| 关闭 |