高水压作用下隧道结构监测措施研究

Research on Monitoring Measures of Tunnel Structure under High Water-Pressure

水害是影响隧道正常运营最为显著和严重的环境灾害因素,一直受到隧道工程界的关注。在众多的影响隧道结构服役安全的隧道病害中,水害的发生几率要远远高于其他病害。依托铁峰山2号隧道工程开展运营期隧址区内水体压力变化监测措施的设计与实施研究,并通过对隧道周边围岩体内水压力的监测,监控水压力变化特征,为判断隧道服役性态和预测隧道水害的发生提供必要的支持。观测数据表明,所采取的防排水措施是合理的,监测措施是可行的。

The water in a tunnel is an environmental disaster factor to affect tunnel＇s normal operation remarkably and severely, and is always in attention. Of the diseases of tunnel which could affect tunnel structures service safety, the probability of water hazard is far highly than other one of the tunnel diseases. Both during construetion and in operation of tunnel, the prediction of water hazard is the key part of tunnel water prevention and drainage engineering. In combination with Tiefengshan Tunnel No. 2, the monitoring measures of water pressure in the tunnel in operation were designed and carried out. And by the monitoring on the water pressure in the tunnel, the changing features of the water pressure to help estimate the tunnel service status were acquired and the probability of water hazard was predicted. The measured data show that the measures for water prevention and drainage are rational and the monitoring measures feasible.