| 砂土质隧道围岩内摩擦系数的试验研究 |
| |
| 引用本文： | 王玉锁,王明年,陈炜韬,魏龙海.砂土质隧道围岩内摩擦系数的试验研究[J].岩土力学,2008,29(3):741-746. |
| |
| 作者姓名： | 王玉锁 王明年 陈炜韬 魏龙海 |
| |
| 作者单位： | 西南交通大学,土木工程学院,成都,610031 |
| |
| 摘 要： | 砂土的内摩擦系数tan(Φ)与砂土质围岩稳定性有直接的关系.从影响砂土质围岩坑道稳定性因素及围岩稳定性分级的角度出发,探讨了与砂土质隧道围岩稳定性相关的内摩擦系数tan(Φ)的影响因素,发现砂土的细粒(d＜0.075 mm)含量对其有较显著的影响,二者呈负相关;砂土相对密实度Dr并非完全是越大而内摩擦系数tan(Φ)也越大,还与细粒含量及软硬状态有关;采用细粒含水率而不是砂土含水率的方法来评定潮湿砂土的tan(Φ)的影响是较为合理的方法,并总结了细粒含水率对tan(Φ)的影响规律.
|
| 关 键 词： | 隧道 围岩分级 砂土 内摩擦系数 细粒含量 土质 隧道围岩稳定性 内摩擦系数 试验 研究 surrounding rock tunnel sandy soil friction coefficient internal research 规律 方法 含水率 硬状态 细粒含量 非完全 相对密实度 负相关 发现 |
| 文章编号： | 1000-7598-(2008)03-0741-06 |
| 收稿时间： | 2006-07-14 |
| 修稿时间： | 2006年7月14日 |
Test research on internal friction coefficient of sandy soil tunnel surrounding rock |
| |
| WANG Yu-suo,WANG Ming-nian,CHEN Wei-tao,WEI Long-hai.Test research on internal friction coefficient of sandy soil tunnel surrounding rock[J].Rock and Soil Mechanics,2008,29(3):741-746. |
| |
| Authors: | WANG Yu-suo WANG Ming-nian CHEN Wei-tao WEI Long-hai |
| |
| Institution: | School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China |
| |
| Abstract: | The internal friction coefficient ( )of sandy soil exactly exerts influence on the stability of sandy soil surrounding rock. From the perspective of influencing factors of the stability of sandy soil surrounding rock and the stability classification of surrounding rock, this paper explores the influencing factors of internal friction coefficient which are related to the stability of sandy soil surrounding rock. It is discovered that the content of fine granules ( 0.075 mm) of sandy soil has distinct influence on the internal friction coefficient of sandy soil. The relationship between the compactedness and internal friction coefficient is not always a direct ratio which is relevant to the content of fine granules of sandy soil and water content of fine granules. It is held that it is more rational to adopt the water content of fine granules rather than water content of sand soil to access the internal friction coefficient of moist sandy soil. This article also makes a conclusion for the influencing rules of the water content of fine granules on the internal friction coefficient of sandy soil. |
| |
| Keywords: | tunnel surrounding rock classification sandy soil internal friction coefficient content of fine granules |
| 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 |
|
