廖小辉, 王雅南, 刘浩, 等. 2020.关于龙游石窟23号古地下洞室23-1号斜坡柱稳定问题的讨论[J].工程地质学报, 28(6): 1439-1447. doi: 10.13544/j.cnki.jeg.2020-097.
    引用本文: 廖小辉, 王雅南, 刘浩, 等. 2020.关于龙游石窟23号古地下洞室23-1号斜坡柱稳定问题的讨论[J].工程地质学报, 28(6): 1439-1447. doi: 10.13544/j.cnki.jeg.2020-097.
    Liao Xiaohui, Wang Ya'nan, Liu Hao, et al. 2020. The engineering scientific of the No.23-1 inclined rock pillar in No.23 cavern in the ancient underground rock caverns in Longyou[J]. Journal of Engineering Geology, 28(6): 1439-1447. doi: 10.13544/j.cnki.jeg.2020-097.
    Citation: Liao Xiaohui, Wang Ya'nan, Liu Hao, et al. 2020. The engineering scientific of the No.23-1 inclined rock pillar in No.23 cavern in the ancient underground rock caverns in Longyou[J]. Journal of Engineering Geology, 28(6): 1439-1447. doi: 10.13544/j.cnki.jeg.2020-097.

    关于龙游石窟23号古地下洞室23-1号斜坡柱稳定问题的讨论

    THE ENGINEERING SCIENTIFIC OF THE No.23-1 INCLINED ROCK PILLAR IN No.23 CAVERN IN THE ANCIENT UNDERGROUND ROCK CAVERNS IN LONGYOU

    • 摘要: 龙游石窟是一个大型的古地下洞室群,具有重要科学和文物价值。为论证古人在龙游石窟23号古地下洞室的洞口设置23-1号斜坡柱的科学性,开展了稳定问题的相关研究。通过对23号洞的地形地貌、地层、构造、地震等方面开展现场地质调查、三维激光扫描和电镜扫描、X射线衍射试验,分析了23-1号斜坡柱岩体的微观性质。结合岩石的物理力学试验和数值反分析方法,反演分析获得了23-1号斜坡柱的物理力学参数。在以上研究的基础上,通过采用假想相同平均截面,同体积的直立岩柱代替原有的23-1号斜坡柱,利用FLAC3D软件对比分析了两种不同岩柱的洞体力学特征。研究结果证明了古人设置23-1号斜坡柱明显优于直立的同体积岩柱,有利于洞室的稳定性,由此论证了古人设置倾斜岩柱的科学性。这一科学发现对现代采矿工程、地下空间的开发与利用、岩土工程的设计与施工具有重要的参考价值。

       

      Abstract: The large ancient underground rock caverns in Longyou is an important component of grotto cultural. It has important scientific and engineering value. In order to prove the scientific of No.23-1 inclined rock pillar, A series of studies were carried out. The topography, landform, stratum, structure and earthquake were investigated and analyzed. The cavern was scanned by using Leica C10. The microscopic rock properties was analyzed by using electron microscope scanning tests and X ray diffraction tests. The physical and mechanical properties of rock mass were analyzed through the mechanical tests and the back analysis of numerical simulation. On this basis, the comparative analysis was carried out by using FLAC3D between No.23-1 inclined rock pillars and the hypothetical vertical rock column with the same volume and average section. The research results confirmed the scientificity of No.23-1 inclined rock pillars. It has important reference value for modern mining engineering, development and utilization of underground space, design and construction of geotechnical engineering.

       

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