Research on the Mechanism of Ground Deformation Induced by Shield Tunnelling under the Influence of Leakage from Pressurized Water Supply Pipelines
Current research on the leakage range of pressurized water supply pipelines in sandy clay strata and the interaction between pipeline leakage and shield tunnelling that induces ground deformation is still inadequate to meet engineering needs.To address this,a combination of model tests and numerical simulations was used to ex-plore the leakage impact range,ground deformation mechanisms,and disaster prevention and control measures un-der the interaction of pipeline leakage and shield tunnelling.Various parameters,including pipeline water pressure and leakage duration,were tested under multiple working conditions in the pressurized pipeline leakage model ex-periment.Results indicate that the leakage range increases exponentially over time,and the degree of change is posi-tively correlated with water pressure.Furthermore,a refined finite element numerical model considering the effects of pipeline leakage was established to study the impact of leakage duration and other factors on tunnel and surrounding soil deformation,leading to corresponding disaster prevention measures.
Shield tunnelPressurized water supply pipelineLeakageUnsaturated soil
万方数据
维普
