| 摘要 |
FIELD: construction.SUBSTANCE: filter strip is used as a waste-water treatment facility, directly adjacent to the railway embankment. Essence of the invention is that the device for removing water is designed as a three-layer tape-shaped filter strip with a width of 1000 mm, placed along the road bed of the railway embankment. The first layer with a height of 145-150 mm is made of rubble. The second main filter layer with a height of 500 mm is made of a sorbent. A perforated geomembrane is placed between the first and second layers. The third supporting layer of the filter strip with a height of 145-150 mm is made of rubble. Perforated pipes are laid inside the third supporting layer. The pipe axes are perpendicular to the axis of the railway embankment. One end is outside the tape-shaped filter strip. Drain water filtered from the ballast layer of the railway embankment enters into the catch-water drain. Thus, the proposed device for water discharge from the ballast layer of the railway embankment allows to clean the surface-water flow from coarse and fine suspended matter, adsorb the dissolved oil products and heavy metal ions using the suitable sorbent, perform the continuous quality monitoring of cleaned drain water.EFFECT: improvement of the efficiency of the surface-water flow cleaning with constant monitoring of the cleaning quality.1 dwg |
