| 深土地压及对冻结壁厚度的影响 |
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| 引用本文： | 赵晓东,周国庆,徐志伟.深土地压及对冻结壁厚度的影响[J].岩土工程技术,2008,22(6):281-285. |
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| 作者姓名： | 赵晓东 周国庆 徐志伟 |
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| 作者单位： | 中国矿业大学深部岩土力学与地下工程国家重点试验室,江苏徐州,221008 |
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| 基金项目： | 国家自然科学基金重点项目"深厚表土层中人工冻结法凿井基础研究(50534040)"，国家科技支撑计划重点项目"深厚冲积层冻结法凿井技术(2006BAB16B01)"，江苏省普通高校研究生科研创新计划项目"深厚表土高压静止土压力系数试验研究(CX08B_103Z)" |
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| 摘 要： | 在对深厚表土中地压计算公式总结的基础上，根据冻结凿井的施工力学行为过程探讨了深厚表土中地压特点；通过深部重塑土的高压Ko固结水平加（卸）荷试验，获得了挤压（松弛）应力Ps与水平挤压（松弛）位移占之间的关系式，并进一步分析了忽略挤压（松弛）应力Ps造成的深土地压及冻结壁厚度的计算误差；对深厚表土的地压应根据冻结凿井施工过程确定，以避免重大工程事故。
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| 关 键 词： | 深厚表土 地压 冻结壁厚度 误差 |
Earth Pressure in Deep Soils and Influences to Thickness of Frozen Wall |
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| Zhao Xiaodong,Zhou Guoqing,Xu Zhiwei.Earth Pressure in Deep Soils and Influences to Thickness of Frozen Wall[J].Geotechnical Engineering Technique,2008,22(6):281-285. |
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| Authors: | Zhao Xiaodong Zhou Guoqing Xu Zhiwei |
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| Institution: | Zhao Xiaodong, Zhou Guoqing, Xu Zhiwei (State Key I.aboratory for Geomechanies and Deep Underground Engineering,CUMT,Xuzhou Jiangsu 221008 China) |
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| Abstract: | Based on summing up earth pressure calculating formulas in the deep and thick soils,the properties of earth pressure are presented according to the construction process of freezing engineering. In addition,the relations between extrusion （relaxation） displacement and extrusion （relaxation） stress Ps are obtained from horizontal loading （unloading） tests of remodeled deep soils experienced high pressure Ko consolidation and the calculating errors of earth pressure as well as thickness of frozen wall caused by neglecting P., are investigated too. The results indicate that earth pressure in deep and thick soils should be selected in accordance with the construction process of freezing engineering in order to avoid project accident. |
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| Keywords: | deep and thick soils earth pressure thickness of frozen wall errors |
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