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首页> 外文会议>International Conference on Material Science and Engineering >Uplift Model Analysis for Shallow Overlaying Slurry Shield Tunnel Based on Time-Varying Behavior of Cement Grouting Material
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Uplift Model Analysis for Shallow Overlaying Slurry Shield Tunnel Based on Time-Varying Behavior of Cement Grouting Material

机译：基于水泥灌浆材料时变行为的浅层覆盖泥浆屏蔽隧道隆起模型分析

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As a necessary and key procedure of shield technology, synchronous grouting affects ground layer deformation, and controls the tunnel uplift and ground subsidence, usually exerting negative influence on underground engineering construction and surrounding buildings. This paper establishes the 2D uplift model of the soil and lining by ABAQUS, based on a static buoyancy varying with solidification of grout and dynamic buoyancy produced by grouting pressure. The effect of buoyancy on lining is simulated in the lining and soil through a series of specific magnitude of interference fit. Effectiveness of the model is validated by comparison of data measurement of South Hongmei Rd. tunnel with predicted results for vertical displacement of ground surface. East line of South Hongmei Rd. tunnel with super large diameter is chosen for the simulation and central burial depths vary as a key parameter. The results show t4hat the differences between predictions and data measurement are limited, hence providing a basis of numerical analysis for the design and optimization of shallow slurry shield tunnel with super large diameter.
机译：作为屏蔽技术的必要和关键程序，同步灌浆影响地层变形，控制隧道隆起和地面沉降，通常对地下工程建设和周围建筑的负面影响。本文根据静态浮力改变，建立了Abaqus的土壤和衬里的2D隆起模型，从而改变了通过灌浆压力产生的灌浆和动态浮力的凝固。浮力对衬里的影响通过一系列特定的干涉配合模拟衬里和土壤。通过比较南红梅RD的数据测量来验证模型的有效性。隧道具有预测结果的地面垂直位移。南红梅·卢比的东线。选择具有超大直径的隧道，用于模拟，中央埋藏深度随着关键参数而变化。结果显示了T4HAT的预测和数据测量之间的差异是有限的，因此为具有超大直径的浅浆料屏蔽隧道的设计和优化提供了数值分析的基础。

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