|
|||||
|
|
| 立井井壁温度应力特征分析 | |
| 引用本文： | 刘金龙,陈陆望,王吉利.立井井壁温度应力特征分析[J].岩土力学,2011,32(8):2386-2390. |
| 作者姓名： | 刘金龙 陈陆望 王吉利 |
| 作者单位： | 1. 合肥学院建筑工程系,合肥,230022 2. 合肥工业大学资源与环境工程学院,合肥,230009 3. 中国科学院武汉岩土力学研究所,武汉,430071 |
| 基金项目： | 安徽省高等学校省级自然科学研究项目(No.KJ2008B259); 住房和城乡建设部研究开发项目(No.2010-K3-7) |
| 摘 要： | 基于弹性理论,推导得到了立井内外壁温度差引起的温度应力解答。数学分析表明,立井内壁温度高于外壁温度时,温度应力分量σθ与σz在内壁处取得最大值,在外壁处取得最小值。温度应力分量σz随着立井的弹性模量E、泊松比μ、膨胀系数αf、立井深度z的增大而增大,随着温差ΔT=Tb?Ta的增大而减小。进一步分析表明,温度应力导致立井内壁处最先发生破裂,这与大量实际立井破裂现象完全吻合。诱发立井破坏的因素中,温度应力的权重大于立井自重荷载的权重,可见温度应力是导致立井破裂的重要因素。 |
| 关 键 词： | 立井 温差 温度应力 破裂 |
| 收稿时间： | 2011-02-22 |
Characteristic analysis of temperature stresses of shaft wall |
|
| LIU Jin-long,CHEN Lu-wang,WANG Ji-li.Characteristic analysis of temperature stresses of shaft wall[J].Rock and Soil Mechanics,2011,32(8):2386-2390. | |
| Authors: | LIU Jin-long CHEN Lu-wang WANG Ji-li |
| Institution: | 1. Department of Civil Engineering, Hefei University, Hefei 230022, China; 2. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; 3. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
| Abstract: | Based on the theory of elasticity,the analytic solution of temperature stress of shaft wall of coal mine is deduced.It is shown that when the temperature of inwall is higher than that of ectotheca of shaft wall,the temperature stresses and get maximal values at inwall and minimal values at ectotheca.Temperature stress will become larger with increases of elastic modulus E,Poisson's ratio,coefficient of dilatation and depth of shaft wall z separately;while temperature stress will decrease with increase of te... |
| Keywords: | shaft temperature difference temperature stress failure |
| 本文献已被 CNKI 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 | |