铁路隧道围岩监控测量技术的应用

Application of Surrounding Rock Monitoring Measurement of Railway Tunnel

为掌握铁路隧道围岩和支护动态,保证施工全过程的安全性和有效性,降低对地面既有构筑物造成不良影响的可能性,优化支护参数及支护效果,需要进行全方位监控量测量。在大宝山隧道工程施工中,通过全站仪等测量设备,对铁路隧道围岩的拱顶下沉、地表沉降及围岩断面等进行监测。此案例的监测实践表明,在铁路隧道施工中,加强隧道围岩监控量测,是掌握隧道围岩的稳定性及施工安全的重要方法。高效的围岩监控量测,可为铁路隧道施工方案的调整,施工措施的制定提供有效的参考和指导,从而更好地保证施工质量,促使铁路隧道施工任务顺利完成。

In order to master the dynamics of surrounding rock and support of railway tunnel,ensure the safety and effectiveness of the whole construction process,reduce the adverse impact on the existing structures on the ground,and optimize the supporting parameters and effects,it is necessary to carry out all-round monitoring and measurement.Based on the actual situation of Dabaoshan Tunnel Project,the vault subsidence,surface subsidence and surrounding rock section of railway tunnel are monitored by the equivalent measuring equipment of total station.It is concluded from practice that in railway tunnel construction,strengthening the monitoring and measurement of tunnel surrounding rock is an important method to master the stability and construction safety of tunnel surrounding rock.Efficient monitoring and measurement of surrounding rock can provide effective reference and guidance for the adjustment of railway tunnel construction scheme and the formulation of construction measures,so as to better ensure the construction quality and to promote the railway tunnel construction efficiently,safely,orderly and smoothly.