Determining Range of Saturated Ground around Leakage Pipeline Using Unsteady Seepage Numerical Analysis

Xing Gao Li; Chao Jie Duan

doi:10.4028/www.scientific.net/AMM.204-208.609

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Determining Range of Saturated Ground around...

Determining Range of Saturated Ground around Leakage Pipeline Using Unsteady Seepage Numerical Analysis

Abstract:

It is of great significance to estimate the range of saturated ground around leakage pipelines when tunneling near the pipelines. The range of saturated ground can be determined from the distributions of the water content and pore-water pressure in ground around the leakage pipelines. The leakage pipeline being modeled as an injection well, a series of unsteady seepage numerical analysis is performed to understand the effects of the internal water pressure of pipelines on the range of saturated ground surrounding the pipelines, and computation results show the exponential relationship between them. In the unsteady seepage analysis, the hydraulic conductivity function and the volumetric water content function must be determined beforehand to get reasonable results of the range of saturated ground.