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  

CT IDENTIFICATION OF KARST ROCK STRUCTURE DAMAGE AND DIAGNOSIS,FORECASTING AND EARLY WARNING OF GROUND COLLAPSE AND WATER INRUSH IN TUNNEL——A CASE STUDY OF YANGPENG TUNNEL OF BEIJING-ZHUHAI EXPRESSWAY IN NORTHERN GUANGDONG

作　　者：黎华清[1] 卢呈杰[1] 甘伏平[1] 喻立平[1] 甘文华 

机构地区：[1]中国地质科学院岩溶地质研究所,广西桂林541004 [2]广东金东建设工程公司,广东广州510080

出　　处：《岩石力学与工程学报》2014年第4期763-771,共9页Chinese Journal of Rock Mechanics and Engineering

基　　金：西南岩溶地区水文地质环境地质综合研究与信息系统建设项目(1212011121157)

摘　　要：以京珠粤北高速公路洋碰隧道为例,利用孔间电磁波透视及Color-CT层析成像技术,通过物理、数学、岩体非线性、计算机数据处理、岩溶地质学方法,针对隐伏碳酸盐岩岩体结构损伤(缺陷)特征、规模、具体位置的原位探测识别试验。结果表明,孔间电磁波透视及Color-CT层析成像技术和方法揭示了碳酸盐岩由岩体细微结构损伤的裂隙为最小识别单元,由最小单元发展成为岩溶通道从深部向岩面贯通,从而导致地面塌陷、隧道岩溶突水、涌泥的地质灾害。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.

关 键 词：隧道工程 贯通结构面 岩体非线性 岩溶隧道突水 岩溶地面塌陷 电磁波射线 

分 类 号：U45[建筑科学—桥梁与隧道工程]