基于与围岩相互作用的冻结壁弹性设计理论

杨维好; 杨志江; 韩 涛; 张 驰; 柏东良

基于与围岩相互作用的冻结壁弹性设计理论 English Version

杨维好^1,2,
杨志江^1,2,
韩涛¹,
张驰¹,
柏东良¹

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，江苏徐州 221008; 2. 中国矿业大学力学与建筑工程学院，江苏徐州 221008

基金项目: 国家科技支撑计划项目 (2006BAB16B01)

详细信息

作者简介:
杨维好 (1966 – ) ，男，安徽省淮南市人，博士，教授，博士生导师，主要从事特殊凿井技术方面的科研与教学工作。

中图分类号: TD265.3; TD262.1 1
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出版历程
- 收稿日期: 2010-12-20
- 发布日期: 2012-03-29

Elastic design theory of frozen soil wall based on interaction between frozen soil wall and surrounding rock

1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China ; 2. School of Mechanics and Civil Engineering, China University of Mining & Technology, Xuzhou 221008, China

摘要

摘要: 冻结壁设计理论是冻结法凿井技术的核心之一。传统的冻结壁厚度弹性设计公式在冻结壁与围岩的弹性模量之比小于 10 时有较大的误差。为了更合理地设计冻结壁，考虑了开挖卸载作用以及冻结壁与围岩的相互作用，建立了一个更符合实际的力学模型；推导出了其弹性解析解；分析了冻结壁与围岩的应力和位移变化规律；讨论了冻结壁厚度的设计方法；基于 Tresca 强度条件和 Mises 强度条件，分别建立了新的冻结壁厚度弹性设计公式。分析比较表明，新公式较传统的冻结壁厚度弹性设计公式更合理，更节省。
- 冻结壁 /
- 围岩 /
- 相互作用 /
- 弹性分析 /
- 设计理论
Abstract: The design theory of frozen soil wall is one of the core technologies for mine shaft freezing sinking. The conventional elastic design formula for the thickness of frozen soil wall has large errors in case the modulus ratio of frozen soil wall to surrounding rock is less than 10. Taking into account the effect of excavation unloading and the interaction between frozen soil wall and surrounding rock, a more practical mechanical model is established for a more rational design of frozen soil wall. Its analytical solutions of elasticity are derived. The variation laws of stresses and displacements in frozen soil wall and surrounding rock are analysed. The design methods for the thickness of frozen soil wall are discussed. Based on Tresca strength condition and Mises strength condition respectively , two new elastic design formulae for the thickness of frozen soil wall are put forward. Analyses and comparisons show that the proposed formulae are more reasonable and more economical than the traditional elastic design formula for the thickness of frozen soil wall.
- frozen soil wall /
- surrounding rock /
- interaction /
- elastic analysis /
- design theory

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参考文献(5)

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