白鹤滩特高拱坝坝基灌浆时机与抬动控制

魏鹏程; 林鹏; 汪志林; 王克祥; 黄纪村

doi:10.16511/j.cnki.qhdxxb.2019.26.046

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清华大学学报（自然科学版） ›› 2020, Vol. 60 ›› Issue (7) : 557-565. DOI: 10.16511/j.cnki.qhdxxb.2019.26.046

专题：大型水电站岩石力学与工程

白鹤滩特高拱坝坝基灌浆时机与抬动控制

魏鹏程¹, 林鹏¹, 汪志林², 王克祥², 黄纪村²

作者信息 +

Foundation grouting times and uplift control of the Baihetan super-high arch dam

WEI Pengcheng¹, LIN Peng¹, WANG Zhilin², WANG Kexiang², HUANG Jicun²

Author information +

文章历史 +

摘要

开展坝基灌浆时机与抬动控制研究，对防止大坝开裂，保证高坝长期稳定具有重要意义。通过理论、数值模拟和现场监测反馈分析，针对复杂地质条件，提出了分区等效灌浆压力向量及模型，通过控制拱坝的抬动及拉应力，该模型可以较好地控制灌浆压力并选择合适的灌浆时机。结合施工现场监测数据，建立了灌浆压力的反演分析优化函数，通过调整分区等效灌浆压力模型参数，得到最优分区等效灌浆压力向量。白鹤滩工程坝基应用表明：该方法能够较为准确地判断灌浆抬动情况并预测灌浆时机。研究结果对同类工程灌浆时机的选择与抬动变形控制具有借鉴意义。

Abstract

The grouting time and uplift control of the dam foundation need to be studied to prevent cracking and to ensure the long-term stability of high dams. A theoretical analysis, numerical simulations and an on-site monitoring feedback analysis were used to develop a partitioned equivalent grouting pressure vector and model for complex geological conditions. The model allows better control of the uplift and tensile stresses in the arch dam for better control of the grouting pressure and better chooses of the appropriate grouting times. The equivalent grouting pressure model was developed from construction monitoring data which was used to develop a feedback analysis for optimizing the grouting pressure with the optimal partitioned equivalent grouting pressure vector. The method was applied to the Baihetan dam foundation to verify that the method can accurately judge the uplift condition of the dam foundation and predict the optimal grouting timing. The study provides a valuable tool for selecting grouting times and for controlling the uplift deformation of similar projects.

导出引用

魏鹏程, 林鹏, 汪志林, 王克祥, 黄纪村. 白鹤滩特高拱坝坝基灌浆时机与抬动控制[J]. 清华大学学报（自然科学版）. 2020, 60(7): 557-565 https://doi.org/10.16511/j.cnki.qhdxxb.2019.26.046

WEI Pengcheng, LIN Peng, WANG Zhilin, WANG Kexiang, HUANG Jicun. Foundation grouting times and uplift control of the Baihetan super-high arch dam[J]. Journal of Tsinghua University(Science and Technology). 2020, 60(7): 557-565 https://doi.org/10.16511/j.cnki.qhdxxb.2019.26.046

参考文献

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基金

林鹏,教授,E-mail:celinpe@tsinghua.edu.cn

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收稿日期	出版日期
2019-06-04	2020-07-15
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2020-06-04

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