[1]吴波,朱文华,徐世祥,等.近邻高压充水溶洞隧道爆破施工围岩损伤研究[J].福建理工大学学报,2025,23(03):220-227.[doi:10.3969/j.issn.2097-3853.2025.03.003]
　WU Bo,ZHU Wenhua,XU Shixiang,et al.Study on surrounding rock damage in tunnel blasting construction near high-pressure water-filled karst caves[J].Journal of Fujian University of Technology;,2025,23(03):220-227.[doi:10.3969/j.issn.2097-3853.2025.03.003]
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近邻高压充水溶洞隧道爆破施工围岩损伤研究
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《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第23卷
期数:
2025年03期
页码:
220-227
栏目:
出版日期:
2025-06-25

文章信息/Info

Title:
Study on surrounding rock damage in tunnel blasting construction near high-pressure water-filled karst caves
作者:
吴波; 朱文华; 徐世祥; 郑卫强; 林一石; 黄勇华; 林孝明
东华理工大学
Author(s):
WU Bo;  ZHU Wenhua;  XU Shixiang;  ZHENG Weiqiang;  LIN Yishi;  HUANG Yonghua;  LIN Xiaoming
School of Civil and Architectural Engineering, East China University of Technology
关键词:
隧道施工; 爆破裂纹; 充水溶洞; 围岩损伤; 防突厚度
Keywords:
tunnel construction;  blast cracks;  water-filled caves;  surrounding rock damage;  anti-outburst thickness
分类号:
U455.6
DOI:
10.3969/j.issn.2097-3853.2025.03.003
文献标志码:
A
摘要:
为了研究隧道爆破施工近临高水压溶洞对围岩稳定性的影响，以龙潭村隧道为工程基础，利用LS?DYNA 软件，构建了近邻高压充水溶洞隧道爆破施工数值模型，通过分析数值计算结果，得到了隧道掌子面与高压充水溶洞相对距离及不同溶洞尺寸对围岩损伤的影响规律。基于爆破裂纹发展趋势建立隧道围岩突水判据，确定了隧道围岩防突体安全厚度。研究结果表明，在高静水压力作用下，当溶洞尺寸一定时，随着与隧道掌子面相对间距的增加，溶洞对隧道的影响逐渐减弱;当相对间距一定时，溶洞尺寸越大对隧道的安全影响越严重;同时根据溶洞与隧道之间的中夹岩是否通过爆破裂纹贯通，得到了隧道围岩的最小抗突厚度。
Abstract:
This research aims to study the influence of high water-pressure karst cave on the stability of surrounding rock in tunnel blasting construction. Focused on the Longtan Village Tunnel project, it employs ANSYS/LS-DYNA software to construct a numerical model for tunnel blasting near neighboring high-pressure water-filled karst caves. Analyzing simulation results, the study finds out the influence of the relative distance between the tunnel face and high-pressure karst caves, along with the effects of varying cave sizes on surrounding rock damage. By establishing criteria derived from the trends in blasting-induced crack development for tunnel water bursting, the research determines the safety thickness of the water bursting prevention layer in the tunnel’s surrounding rock. The results reveal that, under the influence of high hydrostatic pressure and a constant cave size, the impact of caves on the tunnel diminishes gradually as the relative distance from the tunnel face increases. Additionally, with a consistent relative distance, larger caves exert a more pronounced safety impact on the tunnel. Concurrently, the study establishes the minimum water bursting prevention thickness of the tunnel surrounding rock based on whether the caves and the tunnel face are penetrated by blasting-induced cracks.

参考文献/References:

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更新日期/Last Update: 2025-06-25