深厚覆盖层防渗墙安全监测关键技术研究

防渗墙工程是地下隐蔽工程,其施工质量和运行性状直接影响水库大坝安全和效益的发挥,为评估防渗墙的施工质量和工作性状,实现预期的防渗效果和使用寿命,需要对防渗墙进行有效监测。本文总结了国内深厚覆盖层防渗墙监测技术进展,对深厚覆盖层防渗墙监测设计原则、监测仪器选用和布设要点、难点、监测结果分析方法和考虑因素进行了分析,并给出了进一步提高仪器成活率和监测精度的对策建议,对深厚覆盖层防渗墙更好地进行安全监测具有参考价值。

Research on key safety monitoring technology of deep overburden cutoff Wall

The impermeable wall project is an underground hidden project,and its construction quality and operation characteristics directly affect the safety and benefit of the reservoir dam.In order to evaluate the construction quality and working characteristics of the impermeable wall and realize the expected impermeable effect and service life,it is necessary to effectively monitor the impermeable wall.In this paper,the progress of monitoring technology for deep overburden cut-off wall in China is summarized.The design principles of monitoring for deep overburden cut-off wall,key points and difficulties of monitoring instrument selection and layout,analysis methods of monitoring results and factors to consider are analyzed,and countermeasures and suggestions for further improving the survival rate and monitoring accuracy of the instrument are given.It has reference value for better safety monitoring of deep overburden impervious wall.