Seepage drainage method for tailing dam and seepage drainage pipe for use therein
A technology for tailings dams and seepage drainage pipes, applied in excavation, soil protection, construction, etc., can solve the problems of difficult construction, easy downward displacement, small seepage area, etc., and achieve low construction and maintenance costs, Good water permeability, ensure the effect of water permeability
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[0019] A method for drainage of tailings dam, comprising the following steps:
[0020] Drilling, including laying of drill pipes: on the tailings dam, use a horizontal directional drilling machine to drill holes according to the specified depth, angle, and direction to form a tunnel from the lower part of the dam body to the upper part of the dam body; at the same time, lay the drill pipes on the tailings In the borehole of the dam body;
[0021] Pipe pulling, including drainage pipe laying: connect the drill pipe laid in the tailings dam body with the end exposed outside the dam body to a reamer. To facilitate the laying of the drainage pipe in the next step, the reamer is connected with a universal joint, and the universal joint is connected with the head end of the special drainage pipe through a clamp, and then the drilling rig extracts the drill pipe from the tailings dam body, thereby The special drainage pipe is dragged into the tunnel drilled on the tailings dam;
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