Influence of single-row horizontal drainage pipe layout at top of initial dam on stability of tailings dam
In order to reveal the influence of single-row horizontal drainage pipe layout at the top of initial dam on the stabili-ty of tailings dam,taking a tailings pond in Shandong as the engineering research object,the drainage pipe was equivalent to the material with specific saturated permeability coefficient.Based on Darcy's seepage law and limit equilibrium theory,the variation of safety factor with the length and permeability coefficients of drainage pipe under different dry beach lengths was studied.The quantitative relationship between the optimal length of drainage pipe and the length of dry beach was estab-lished,and the emergency rescue and disaster relief technology with the cooperative work of the drainage pipe of initial dam and the suction pump at dam top in flood season was put forward.The results show that the cooperative work technology of the horizontal drainage pipe layout at the top of initial dam and the suction pump at the top of tailings dam can effectively reduce the phreatic line position in the dam and significantly improve the stability of tailings dam.The research results provide much strong technical support for the tailings dam drainage in the flood season.
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