【摘 要】
：
为了研究隧道空洞的存在对隧道承载特性的影响,易引起隧道坍塌、裂缝以及渗漏水等灾害,通过对三条基线周边收敛、围岩内部多点位移的数据分析,探讨了周边收敛、围岩多点位移
【机 构】
：
重庆大学土木工程学院,林同棪国际工程咨询(中国)有限公司,
论文部分内容阅读
为了研究隧道空洞的存在对隧道承载特性的影响,易引起隧道坍塌、裂缝以及渗漏水等灾害,通过对三条基线周边收敛、围岩内部多点位移的数据分析,探讨了周边收敛、围岩多点位移指导隧道信息化施工的作用及有空洞出现时收敛曲线的变化规律;结果表明从曲线的变化可以研究空洞存在的可能性;利用探底雷达在有可能出现空洞的地方做现场试验,通过Matlab小波分析对雷达信号进行处理验证了这种可能性的存在,在初衬期间及时对隧道空洞进行治理,可避免在二衬或者营运时处理花费更大的代价.
In order to study the influence of the tunnel cavity on the bearing characteristics of the tunnel, it is easy to cause the tunnel collapse, cracks and seepage water disaster. Based on the data analysis about the convergence around the three baselines and the multi-point displacements in the surrounding rock, Multi-point displacement guide the role of tunneling information construction and the change rule of the convergence curve when there is a hole. The results show that the possibility of void exists from the change of curve. By using bottom-dip radar to do field test in the possible hole, The radar signal processing by Matlab wavelet analysis verifies the existence of this possibility, and the timely treatment of the tunnel cavities during the initial lining can avoid costly disposal in the second lining or operation.
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