The initial construction of earth pressure balance shield is one of the key links in the construction and has high safety risk. When there are important pipelines in the shield starting section, the deformation of the...The initial construction of earth pressure balance shield is one of the key links in the construction and has high safety risk. When there are important pipelines in the shield starting section, the deformation of the stratum is required to be high and the shield starting process is required to be strict. Therefore, the important pipelines should be protected before the shield construction, and the control of tunnel line type, shield driving parameters and posture should be strengthened during the construction. Through an engineering example, the paper introduces a construction technology for shield starting section to pass through important pipeline groups. Through pipeline protection and shield construction control, the smooth passage of shield is ensured, which can provide reference for similar engineering construction.展开更多
文摘The initial construction of earth pressure balance shield is one of the key links in the construction and has high safety risk. When there are important pipelines in the shield starting section, the deformation of the stratum is required to be high and the shield starting process is required to be strict. Therefore, the important pipelines should be protected before the shield construction, and the control of tunnel line type, shield driving parameters and posture should be strengthened during the construction. Through an engineering example, the paper introduces a construction technology for shield starting section to pass through important pipeline groups. Through pipeline protection and shield construction control, the smooth passage of shield is ensured, which can provide reference for similar engineering construction.
