RESEARCH ON CONSTRUCTION TECHNOLOGY OF LONG DISTANCE SHIELD SLAG TRANSPORT IN DEEP SHAFT
This technology mainly relies on the A2 standard project of the Pearl River Delta Water resources allocation project.The vertical height of slag discharge during the shield construction stage is 66.78 m,the effective diameter of the working well is 30.5 m,the length of the shield tunnel is 2.926 km,the inner diameter of the tunnel is 5.4m,the slope of the tunnel is 0.5％,and the shield tunnel mainly crosses Ganzhu river.The excavation of the shield tunnel is mostly weak weathered mud siltstone,the tunnel is buried 40～60 m,and the φ6280 soil pressure balance shield is used for construction.Affected by the depth and space of the working well,it is difficult to transport the slag during shield construction.The team takes overcoming difficulties as the starting point,through optimizing the slag method and improving the slag equipment,to achieve the purpose of improving production efficiency,saving construction costs and ensuring construction safety.The measures adopted can be used as reference for similar projects.
deep shaftlong distanceshield slagginghorizontal belt conveyorvertical belt conveyor
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