Soil side slope or tailings dam drainage construction method
A soil slope and construction method technology, applied in the field of geotechnical engineering, can solve problems such as low efficiency, large construction distance, complex construction procedures, etc., and achieve the effect of fewer operating procedures, simple construction, and convenient return of drill pipes
Active Publication Date: 2012-02-01
中冶沈勘工程技术有限公司
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Problems solved by technology
Due to the characteristics of convenient running, good orientation and large construction distance, horizontal directional drilling has been widely used in recent years, but the existing construction methods have complicated construction procedures and low efficiency.
Method used
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Embodiment Construction
[0019] A seepage drainage construction method for soil slopes or tailings dams, comprising the following steps:
[0020] Step 1 Drilling:
[0021] Fix the directional drilling machine 2 at a designated position on the tailings dam 1, and drill holes from bottom to top according to the design requirements until the design position is reached. If drilling from top to bottom is adopted, the sand stop ring may not be used when withdrawing the drill pipe .
[0022] Step 2 Install the drainage pipe:
[0023] When the hole is drilled to the designed position, the directional drilling machine 2 bit or the connecting rod of the drilling rig power head are removed, and the drill pipe 3 is directly used as the construction sleeve of the seepage pipe, and the prefabricated seepage pipe 4 is placed in the drill pipe 3 . The seepage pipe 4 is a known technology. Use PE pipe or PPR water supply pipe. The drainage holes on the pipe are arranged in a plum blossom shape. The drainage pipe 4 ...
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The invention relates to a soil side slope or tailings dam drainage construction method comprising the following steps of: drilling: drilling on a soil side slope or a tailings dam by adopting a directional drilling machine from top to bottom or from bottom to top according to the design requirement; installing drainage pipes, removing the directional drills or directional drilling machine power head connecting rods after drilling to the designed position, and placing the drainage pipes into drill stems; and retreating the drill stems: retreating the drill stems from drilled holes by utilizing the directional drilling machine one by one, and then the drainage pipes can drain off water. In the invention, due to the fact that the drill stems are used as the construction casing pipes of the drainage pipes, the construction is simple and the operation procedures are few. The back dragging resistance is small when the drill stems are retreated, and moreover, the piping phenomenon is not easy to generate in the construction process, and the construction is safe. In the construction method, for example, drilling from top to bottom, a sand stopping ring is not needed when the drill stems are retreated, the drill stems can be conveniently retreated and the construction efficiency is high.
Description
technical field [0001] The invention relates to the field of geotechnical engineering, and specifically refers to a construction method for horizontal drainage of soil slopes or metal mine tailings dams, red mud dams, power plant ash dams, and the like. Background technique [0002] At present, methods such as horizontal pipe jacking and horizontal directional drilling are often used for horizontal drainage of tailings dams, red mud dams, ash dams and soil slopes. Horizontal directional drilling has been widely used in recent years because of its convenient running, good orientation, and large construction distance. However, the existing construction methods have complicated construction procedures and low efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a soil slope or tailings dam seepage drainage construction method with simple construction procedure, convenient operation and high production efficie...
Claims
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IPC IPC(8): E02D17/20E02D3/10
Inventor 刘利华姜宏李福奎魏可峰滕海军
Owner 中冶沈勘工程技术有限公司