Hasan Muhammad, Su Lijun, Cui Peng, Shang Yanjun
State Key Laboratory of Mountain Hazards and Engineering Resilience, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China.
Joint Research Center on Earth Sciences, China, CAS-HEC, Pakistan, Islamabad, China.
Sci Rep. 2025 Jan 9;15(1):1403. doi: 10.1038/s41598-025-85626-7.
The stability criterion based on the characterization of rock masses can be used to advance deep underground engineering projects. A key geomechanical criterion in geotechnical engineering is rock quality designation (RQD), which assesses risk for engineering design success criteria. Time, cost, and credibility constraints make it difficult to accurately estimate RQD. Point-scale data makes engineering design less precise and confusing, while traditional drilling for RQD estimation are expensive and time-consuming. An innovative geophysical approach to 2D and 3D RQD estimation is presented in this study. It provides easier, faster, and cheaper access to geomechanical volumetric data. So far, no other work has used non-invasive CSAMT to estimate RQD over 1 km depth in a highly diverse rock setting. The suggested approach provides a more precise and thorough evaluation of the rock's integrity for the effective installation of the neutrino detector 700 m below ground. The results are significant because they help us make sense of complicated geological situations, estimate the likelihood of early collapse, and build deep underground structures safely, steadily, and affordably. Our approach leads to more objective indices, helps in the development of more accurate geotechnical structures, and reduces inconsistencies between appropriate geomechanical models and sparse data.
基于岩体特征的稳定性准则可用于推进深部地下工程项目。岩土工程中的一个关键地质力学准则是岩石质量指标（RQD），它评估工程设计成功标准的风险。时间、成本和可信度限制使得准确估计RQD变得困难。点尺度数据使工程设计不够精确且令人困惑，而传统的用于RQD估计的钻探既昂贵又耗时。本研究提出了一种用于二维和三维RQD估计的创新地球物理方法。它提供了更简便、快速且廉价的获取地质力学体积数据的途径。到目前为止，还没有其他工作在高度多样化的岩石环境中使用非侵入性可控源音频大地电磁法（CSAMT）来估计超过1公里深度的RQD。所建议的方法为有效安装地下700米深处的中微子探测器提供了对岩石完整性更精确和全面的评估。这些结果意义重大，因为它们有助于我们理解复杂的地质情况，估计早期坍塌的可能性，并安全、稳定且经济地建造深部地下结构。我们的方法能得出更客观的指标，有助于开发更精确的岩土结构，并减少合适的地质力学模型与稀疏数据之间的不一致性。
