| 地下工程中支架和围岩相互作用的突变模型 |
| |
| 引用本文： | 赵常洲,李占强,魏风华,陈铁林.地下工程中支架和围岩相互作用的突变模型[J].岩土力学,2005,26(Z1):17-20. |
| |
| 作者姓名： | 赵常洲 李占强 魏风华 陈铁林 |
| |
| 作者单位： | 中国地质大学 南京水利科学研究院 北京 |
| |
| 摘 要： | 建立了支架和围岩相互作用的突变模型,利用支架刚度和围岩的弱化刚度模量研究了围岩的突变失稳。研究结果从理论上解释了新奥法的支护原理。利用突变模型定量地给出了突变失稳的关键点。当围岩的变形量达到变形关键点以后,围岩就进入了散体区。变形关键点的大小是围岩-支架系统内部因素决定的,与外界条件无关。
|
| 关 键 词： | 突变 围岩 支架 相互作用 |
| 收稿时间： | 2005-01-03 |
Catastrophe model of support and surrounding rock of underground engineering |
| |
| ZHAO Chang-zhou,LI Zhan-qiang,WEI Feng-hua,CHEN Tie-lin.Catastrophe model of support and surrounding rock of underground engineering[J].Rock and Soil Mechanics,2005,26(Z1):17-20. |
| |
| Authors: | ZHAO Chang-zhou LI Zhan-qiang WEI Feng-hua CHEN Tie-lin |
| |
| Institution: | 1.China University of Geosciences, Beijing 100083, China; 2. Nanjing Hydraulic Research Institute, Nanjing 210024, China |
| |
| Abstract: | A catastrophe model of support and surrounding rock interaction is established. Catastrophe instability of surrounding rock is studied by using support stiffness and softening stiffness modulus of surrounding rock. The model gives rational theoretical basis of new Austrian tunnelling method. The key point of catastrophe instability is quantified. Support and surrounding rock become discrete material when its displacement get the key point. The key point is determined by internal cause rather than external cause of support and surrounding rock. |
| |
| Keywords: | catastrophe surrounding rock support interaction |
| 本文献已被 CNKI 维普 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 |
|
