|
|||||
|
|
| 岩体开挖卸荷过程力学特性研究 | |
| 引用本文： | 胡海浪,刘军,黄秋枫.岩体开挖卸荷过程力学特性研究[J].水力发电,2011,37(4). |
| 作者姓名： | 胡海浪 刘军 黄秋枫 |
| 作者单位： | 1. 四川大渡河双江口水电开发有限公司,四川,马尔康,624000 2. 二滩水电开发有限责任公司,四川,成都,610051 3. 国电大渡河金川水电建设有限公司,四川,金川,624100 |
| 摘 要： | 基于岩体开挖卸荷过程中力学参数变化理论,建立卸荷岩体有限元分析模型,运用ADINA有限元分析软件对岩体进行三维卸荷数值仿真研究.结果表明,岩体在开挖卸荷过程中,岩体的弹性模量、粘聚力和内摩擦角等力学参数随开挖卸荷量的增大而减小,但不是从初始值一直减小到零,而是随岩体的裂隙、结构面张开扩展到一定程度后,保持一定的量级不再减小. |
| 关 键 词： | 有限元 岩体开挖 卸荷过程 力学特性 |
Mechanical Characteristics of Rock Mass during Excavation and Unloading Process |
|
| Hu Hailang,Liu Jun,Huang Qiufeng.Mechanical Characteristics of Rock Mass during Excavation and Unloading Process[J].Water Power,2011,37(4). | |
| Authors: | Hu Hailang Liu Jun Huang Qiufeng |
| Affiliation: | Hu Hailang1,Liu Jun2,Huang Qiufeng3(1.Sichuan Dadu River Shuangjiangkou Hydropower Development Co.,Ltd.,Maerkang 624000,Sichuan,China,2.Ertan Hydropower Development Co.,Chengdu 610051,3.Guodian Dadu River Jinchuan Hydropower Development Co.,Jinchuan 624100,China) |
| Abstract: | The finite element analysis model for unloading rock mass is set up based on the changing theory of mechanical parameters during the excavation and unloading of rock mass,and the three-dimensional numerical simulation for the model is conducted by ADINA.The simulations show that the elastic modulus,cohesion and internal friction angle of rock will reduce with the increase of excavation quantity,but not reduces to zero from initial value and will keep in a certain order of magnitude when the rock cracks and ... |
| Keywords: | finite element rock excavation unloading process mechanical characteristic |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |