喀斯特岩体结构损伤的CT识别及地面塌陷与隧道突水诊断预报预警——以京珠粤北高速公路洋碰隧道为例

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Abstract The Yangpeng tunnel in Northern Guangdong province on the expressway from Beijing to Zhuhai was investigated for the in-situ detection and recognition of the characteristics，the sizes and the specific locations of concealed structural damages(defects) of the carbonate rocks using the technologies of electromagnetic wave perspective imaging between holes and Color-CT tomography imaging. The results from the electromagnetic wave perspective imaging between holes and the Color-CT tomography imaging suggest that the fracture of the fine structural damage in the carbonate rocks is the minimum recognition units. The minimum recognition units are developed into karst tunnels linking the deep rock surface，and thus leading the geological disasters of ground collapse and inrushing of water and mud in the tunnel.

Key words： tunnelling engineering through structural surface nonlinearity of rocks water inrush in karst tunnel karst ground collapse electromagnetic rays

Received: 28 June 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I4/763

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