| 立井回填及悬吊管竖向荷载的试验研究 |
| |
| 引用本文： | 宋雷,刘新良,杨维好,刘俊鹏,王新强,刘振兴. 立井回填及悬吊管竖向荷载的试验研究[J]. 中国矿业大学学报, 2010, 39(5) |
| |
| 作者姓名： | 宋雷 刘新良 杨维好 刘俊鹏 王新强 刘振兴 |
| |
| 作者单位： | 1. 中国矿业大学,深部岩土力学与地下工程国家重点实验室,力学与建筑工程学院,江苏,徐州,221008
2. 西北核技术研究所,陕西,西安,710024 |
| |
| 基金项目： | 国家自然科学基金，"十一五"国家科技支撑计划项目，冻土工程国家重点实验室开放基金项目 |
| |
| 摘 要： | 采用模型试验方法,给出了立井回填的过程中出现填料突沉问题的相似准则.通过物理模拟,再现了泥浆夹层的形成与破坏过程,指出泥浆夹层结构的破坏导致填料突沉,进而导致悬吊管竖向荷载的突然增加;为模拟填料突沉,在试验装置底部设置气囊,以底囊排空模拟井中填料的突沉,获得了井中流体、填料级配变化条件下的悬吊管竖向荷载,并推算出原型中的竖向荷载可达40.44MN,足以拉断悬吊管;文中提出采用柔性管接头、减小管土间摩擦系数、优化填料工艺等方法,可有效控制悬吊管的竖向荷载.
|
| 关 键 词： | 立井回填 突沉 竖向荷载 模型试验 泥浆夹层 |
Experimental Study of Shaft Filling and Vertical Loads on a Pendant Pipe |
| |
| SONG Lei,LIU Xin-liang,YANG Wei-hao,LIU Jun-peng,WANG Xin-qiang,LIU Zhen-xing. Experimental Study of Shaft Filling and Vertical Loads on a Pendant Pipe[J]. Journal of China University of Mining & Technology, 2010, 39(5) |
| |
| Authors: | SONG Lei LIU Xin-liang YANG Wei-hao LIU Jun-peng WANG Xin-qiang LIU Zhen-xing |
| |
| Affiliation: | SONG Lei1,LIU Xin-liang2,YANG Wei-hao1,LIU Jun-peng2,WANG Xin-qiang1,LIU Zhen-xing2 (1.State Key Laboratory for Geomechanics & Deep Underground Engineering,School of Architecture & Civil Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China,2.Northwest Institute of Nuclear Technology,Xi'an,Shaanxi 710024,China) |
| |
| Abstract: | Model experiments were conducted to determine the criteria associated with sudden sinking of shaft-well-filling.A mud sandwich was formed and its failure was studied.Subsidence of the upper deposit was caused by destruction of the mud sandwich,which then led to an abrupt increase in the vertical load on the pendant pipe.Subsidence of a deposit in the shaft-well was simulated by installing a bladder at the bottom of the model.Emptying the bladder simulates the sudden subsidence of a shaft-well deposit.Vertic... |
| |
| Keywords: | shaft filling sudden sinking vertical load model testing mud sandwich |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
