张呼铁路施工振动对长城文物影响研究

Study on the Influence of Zhangjiakou-Hohhot Railway Construction Vibration on the Great Wall Cultural Relics

近年来随着高速铁路的快速发展,铁路施工引起的振动问题越发凸显。如果不采取减缓措施,施工振动可能会对铁路周边文物产生损坏。依托张呼铁路下穿长城烽火台施工期间的振动监测,分析论证铁路施工期间的振动对临近文物的影响。针对张呼铁路大尖山一号隧道施工期间的振动速度和地面沉降量进行监测,结果表明:张呼铁路隧道爆破施工时,长城烽火台测点振动未超出振动允许速度限值;地表沉降主要集中在下台阶开挖施工过程中,隧道下穿烽火台时,隧道上方监测点位有0~7 mm左右的累计下沉变化量,下沉变化量满足地表总沉降变形控制标准。

In recent years, with the rapid development of high-speed railway, the vibration caused by railway construction has become increasingly prominent. If the mitigation measures are not taken, the construction vibration may damage the cultural relics around the railway. Relying on the vibration monitoring during the construction of Zhangjiakou-Hohhot railway crossing the Great Wall beacon tower, this paper analyzes and demonstrates the influence of the vibration during the railway construction on adjacent cultural relics. Monitoring the vibration speed and ground settlement of the No. 1 tunnel in Dajianshan of Zhangjiakou-Hohhot railway shows that the vibration of the nleasuring point of the Great Wall beacon tower does not exceed the allowable vibration speed limit during the blasting construction of Zhangjiakou-Hohhot railway tunnel. The ground subsidence is mainly concentrated in the excavation process of the lower step. When the tunnel goes through the beacon tower, tile monitoring point above the tunnel has accunlulated subsidence variation of about 0 - 7 ram, and the subsidence variation meets the control standard of the total ground subsidence deformation.