重载铁路隧道底部围岩损伤机理分析

Damage Mechanism Analysis of Surrounding Rock at the Bottom of Heavy-load Railway Tunnel

文章以某段30吨重载铁路中的双洞隧道为例,从接触压力、水压力两方面入手,对通车前、通车一个月后、通车半年后以及通车一年后的隧道底部围岩损伤进行长期监测,明确损伤情况以及变化的规律,旨在了解相应段隧道底部围岩损伤的机理,并为相关从业人员提供经验参考。

Taking a double tunnel in a 30 ton heavy-duty railway as an example,this paper starts from two aspects of contact pressure and water pressure to carry out long-term monitoring of the surrounding rock damage at the bottom of the tunnel before,one month after,half a year after and one year after opening to traffic,to clarify the damage situation and the change rule,in order to understand the mechanism of the surrounding rock damage at the bottom of the corresponding tunnel,and to provide experience for the relevant practitioners.