Window-type drainage well and construction method thereof

Abstract

The invention discloses a window-type drainage well and a construction method of the window-type drainage well. The window-type drainage well comprises a well casing and a well base. The well casing is provided with a well wall. The well wall is provided with a drainage window. The inner wall of the drainage window is of a circular truncated cone shape. The drainage window is provided with a reducing pipe. The outer wall of the reducing pipe is matched with the inner wall of the drainage window. A cage is arranged in an inner cavity of the reducing pipe and matched with the inner wall of the reducing pipe, the cage is filled with a filtering device, and a first ring flange is arranged on the outer side of the reducing pipe. The first ring flange is connected with a second ring flange, and the second ring flange is connected with a seepage collection device. Or a blind ring flange is fixed on the first ring flange. The construction method of the window-type drainage well comprises the steps of excavating to form a well base foundation, manufacturing the well base, manufacturing the well casing, placing the cage, the filtering plate, coarse sand bags and gravel bags in the reducing pipe, wherein the coarse sand bags and the gravel bags are wrapped in geotechnical cloth, and connecting the first ring flange with the second ring flange or the blind ring flange. According to the window-type drainage well and the construction method of the window-type drainage well, a window can be blocked off, and the window-type drainage well can be further transformed into a seepage collection well; the window-type drainage well is flexible in use and capable of integrating two functions, thereby reducing investments.

Description

technical field [0001] The invention relates to a drainage well, in particular to a window-type drainage well for tailings pond backwater or tailings pond with small catchment area to discharge flood. Background technique [0002] Drainage well is one of the important structures of mine tailings facilities. Most of the rain and snow water and tailings clarified water falling in the catchment area of ​​tailings pond pass through it, and then are discharged out of the pond through structures such as drainage culverts or tunnels to ensure that the tailings The mine dam will not be flooded and the tailings clarified water will be returned to the concentrator for reuse. When the discharge capacity of the drainage structure required by the tailings pond is small, the window type drainage well is generally used. The window-type drainage well is built at one time, and there are drainage windows at different elevations on the well wall. The well has the advantages of good structural...

AI Technical Summary

Problems solved by technology

When installing concrete plugs on the drainage window, it is necessary to move the concrete plug from the shore to the ship, and then install it from the ship to the drainage window of the drainage well.

When the construction deviation of the concrete plug is large, it may not be installed, and the sealing performance is poor

Images