Evaluation on Dyke Safety Affected by Trenchless Pipeline Engineering

Trenchless pipeline engineering will form an excavation disturbed zone around piping, and the zone will lead to groundwater flow variation and affect dyke safety. According to an actual engineering example, taking account of such unfavorable factors as highest flood stage and river channel erosion, a groundwater numerical simulation model is built for simulating the maximum groundwater hydraulic gradient. Based on the critical hydraulic gradient method and the safety coefficient recommended by relevant criterion, the quantitative analysis on the possibility of pipeline engineering induce infiltration destruction is study.