地质雷达探测引水隧洞工程质量实例与分析

Example and Analyses about Detection for Engineering Quality of Diversion Tunnel by GPR

隧道是工程建设中不可缺少的一部分,其工程质量事故主要表现为衬砌脱空、开裂,混凝土强度不足和回填土不密实等,地质雷达可以连续快速地对其隐患进行无损探测,提供准确的工程质量信息。通过引水隧洞工程质量探测实例,合理的选择了介电常数和天线中心频率,结合引水隧洞工程地质条件,成功地探明了隧洞存在的隐患,为事故的处理提供了可靠的依据。

The tunnel is an important component in an engineering construction. The problems of its engineering quality mainly behave as the delamination and cracking of concrete liner, lower strength of concrete and uncompacted backfill etc. GPR is an advanced detecting technology and can make detection without damage for its hidden troubles continuously and quickly, so as to provide the exact information of engineering quality. Through the practical example of engineering quality detecting for a diversion tunnel by using GPR, the media-electricity constant and anterma center frequency are choosed reasonably, and the hidden trouble in the tunnel are detected successfully to provide the reliable bases for accident treatment.