| 马宁,张新.基于激光扫描和数值模拟的大型溶洞顶板稳定性评价研究[J].贵州地质,2023,40(1):88-94 |
| 基于激光扫描和数值模拟的大型溶洞顶板稳定性评价研究 |
| Stability Evaluation of Large Cave Roof Based on Laser Scanning and Numerical Simulation |
| 投稿时间：2022-11-23 |
| DOI： |
| 中文关键词: 三维激光扫描 有限元建模 稳定性分析 溶洞 |
| 英文关键词:Three-dimensional laser scanning Finite element modeling Stability analysis Karst cave |
| 基金项目:贵州省教育厅青年科技人才成长项目(黔教合KY 字[2016]177)。 |
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| 中文摘要: |
| 随着岩溶地区城镇建设、房地产开发的快速发展，岩溶地基稳定性成为房屋工程建设施工的关键问题之一。针对目前溶洞顶板稳定性分析经验的不足，本研究依托某房建施工项目，在钻孔勘探以及三维激光地质扫描工作的基础上，基于有限元模拟软件建立了溶洞数值分析模型，且按实际情况楼房和车库荷载对溶洞顶板进行稳定性分析，根据顶板最大主应力数据判断溶洞稳定性是否满足房建荷载要求，并据此提出合理施工意见。结果表明，三维激光地质扫描可为后期数值模拟提供很好的基础，有限元计算结果拟通过半定量计算进行验证，发现结果与数值模拟结果相接近，该方法使分析结果更接近实际情况，工作方法和研究成果可为相似地质条件下溶洞顶板稳定性评价提供参考。 |
| 英文摘要: |
| With the rapid development of urban construction and real estate development in karst area，the stability of karst foundation has become one of the key problems in housing constructionAiming at the shortcomings of the currently karst cave roof stability analysis，this study based on a housing construction project，the three-dimensional geological scanning laser drilling exploration and analysis on the basis of 1:1 cave was built based on the finite element software simulation entity model，and according to the actual situation of additional buildings and garages load，to the safety of the roof stability analysis，and according to the maximum compressive principal stress data judgment cave roof stability whether meet the requirements of housing load，and accordingly puts forward reasonable constructionThe results show that 3d laser geological scanning can provide a good basis for the later numerical simulation，and the results are verified by semi-quantitative calculation，which is consistent with the numerical simulationThis method makes the analysis results closer to the actual situation，The working method and research results can provide reference for similar geological structure projects |
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