以某在建高速公路隧道施工过程中遇到的采空区处理为依托,探讨了隧道穿越采空区的探测与处理技术。对探地雷达应用于隧道施工过程中的采空区探测技术进行了系统的总结;利用ANSYS软件对2种预备的支护方案进行数值模拟和分析,推荐了具体的支护方案;分析了采空区对隧道的影响,给出了具体的设计方案和施工原则;将施工过程中监控量测的数据信息和仿真模拟数值进行对比分析,对处理的结果进行了评价。结果表明:在经济上合理、技术方面可行而又满足施工进度要求的情况下采用钢拱架和墩台对采空区进行支护,并用轻型材料填充的处理方法,能较好地控制隧道的变形和位移。
Based on exhausted area treatment of a highway tunnel under construction , the detection and treatment technology of tunnel through exhausted area was discussed .The theory and method of using ground penetrating radar to detect the exhausted areas during construction were systematically summarized .Numerical simulation and analysis were used on the two types of reinforcement schemes by ANSYS software , and the detailed reinforcement scheme was recommended .The effect of exhausted area on tunnel was analyzed ,and the detailed designing scheme and construction principles were given .The measuring values and simulation values in construction were comparatively analyzed ,and the treatment result of the exhausted areas was assessed .The results indicate that based on the economical technology being feasible ,reasonable and meeting the requirements of construction progress ,the use of steel frame and pier to support the exhausted area and filling with lightweight materials can better control the deformation and displacement of the tunnel .