Isolation blocking technology for pollutants under mine

Abstract

The invention relates an isolation blocking technology for pollutants under a mine and an isolation technology for the pollutants in an underground space of a mine area, in particular to the technicalfield of isolation treatment of manually-dumped pollutant sites of roadways and goafs. During treatment of the pollutants in a downhole roadway and a goaf, the pollutants need to be isolated firstly.Underground spaces of the roadway and the goaf are large, a large amount of cement grout is prone to flow away, grouting top filling is difficult to form, the blocking effect is difficult to achieve,and mixing of the grout and the pollutants further causes the defects of large pollution treatment difficulty and high cost. The invention provides a novel roadway and goaf grouting technology, and the novel roadway and goaf grouting technology comprises the construction processes that common grouting holes (also serving as roadway and goaf exploration holes) are constructed, goaf or roadway grouting holes are constructed, floral tubes are put downward and stone is put in, and grouting is conducted. Compared with a traditional grouting technology, the novel roadway and goaf grouting technology has the advantage of small use amount of the cement grout and aggregate and further has the advantages that the grouting influence radius is small, top filling can be achieved, and impermeability ishigh.

Description

technical field [0001] The invention belongs to the technical field of isolation and treatment of artificial dumping of pollutants in coal mine roadways and goafs, and in particular relates to the isolation technology of pollutants in underground spaces in mining areas. Background technique [0002] At present, the situation of artificially dumping chemical wastes in the roadway (12) and the goaf (13) of the mine (11) occurs from time to time. Cause underground space pollution, pollutants (14) migrate with groundwater, affect the quality of groundwater, and endanger the lives and health of nearby residents. For the pollution treatment of the underground roadway (12) and the goaf (13), it is first necessary to isolate the pollutants (14) by construction anti-seepage curtains (15). The roadway (12) and the goaf (13) have large underground spaces, and a huge amount of cement slurry is prone to loss, which makes it difficult to connect the roof (26), and it is difficult to achi...

AI Technical Summary

Problems solved by technology

The roadway (12) and the goaf (13) have large underground spaces, and a huge amount of cement slurry is prone to loss, which makes it difficult to connect the roof (26), and it is difficult to achieve the plugging effect. The mixing of cement slurry and pollutants (14) will also cause pollution Disadvantages of difficult governance and high cost

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