T/JXYX 0001-2024 Safety Technical Regulations for Tailings Pond Cofferdam in Jiangxi Province

Scope

Scope: This document specifies the basic requirements, investigation and design, construction and acceptance, operation and management, and safety inspection for the use of model bags to fill tailings and build dams in tailings ponds of metal and non-metal mines in Jiangxi Province. This document applies to tailings ponds in metal and non-metal mines in Jiangxi Province that use model bags to fill tailings and build dams. The model bag filling and tailings damming process is mainly used for tailings damming, creating dry beaches in the pond, flood control projects, and increasing the storage capacity of tailings ponds. Main technical content: 4.1 The qualifications for the investigation, design, construction, and supervision of model bag dams shall meet the qualification requirements for tailings pond construction in Jiangxi Province. 4.2 For tailings ponds using model bag damming, their classification, structure grade, flood control standards, and minimum safety factors for slope stability against landslides shall comply with the requirements of GB 39496. 4.3 When using model bags to dam the tailings pond beach, the damming elevation rate shall be controlled. 4.4 Before model bag damming, a model bag damming test shall be conducted on-site and the test results shall be submitted. 4.5 The tailings filled into the model bags shall be fluid, with a particle size of ≤0.005mm accounting for no more than 10%. 4.6 The model bag materials shall be resistant to aging, corrosion, water permeability, sand retention, and siltation. For permanent model bag dams, the longitudinal and lateral tensile strength of the model bags shall not be less than 30 kN/m; for temporary model bag dams, the longitudinal and lateral tensile strength shall not be less than 20 kN/m; and other performance indicators shall comply with the requirements of GB/T 17641. 4.7 The height of each period of model bag damming shall be controlled within 10 m, and the height of each sub-dam sha

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