Mine drainage in flat and pitching mining of coal deposits with combined method

FIELD: mining engineering.

SUBSTANCE: mine drainage during flat and pitching mining of coal deposits with combined method includes sewage and drainage ditches of mine workings, drain sumps, pumpsets on the lower mine and open-cast horizons, pumping stations with or without drain sumps on the upper mine horizons sublevels, drain sumps and disinfection of mine waters on the surface system, connected into a single complex by a network of pipelines with stop valves. In underground drain sumps, located on the lower mine workings horizons, gravity growths of underground mine water come from the gutters of underground mine workings through underground water pre-treatment complexes, which serve to separate large and suspended particles up to 0.15 mm and immiscible liquids and floating objects with a density below water by mechanical and electrophysical methods. Then, they are delivered by the pumpsets to the drain sump, located on the lower horizon of open-cast, where they are mixed with the mine growth of open mine workings and by pumping units, located on the sides of open-cast or floating pontoon is delivered to the deep water purification complex on the surface, from where, purified and disinfected using mechanical, physical chemical methods, it flows into the surface drain sump and, after sludge, is discharged onto the terrain or external water bodies.

EFFECT: increasing the degree of mine waters cleaning and wear resistance of equipment, ensuring elimination of multistage, reducing capital costs.

3 cl, 1 dwg

 



 

Same patents:

FIELD: mining.

SUBSTANCE: method involves collection of underground water to manifold (17) around development zone (26) of ore (8) deposit (7) so that cone of depression (27) is formed owing to operation of rings (14) of upward discharge wells (15) drilled out of drain annular mine working (6). Inflow is supplied from manifold (17) of mine working (6) by gravity via pipeline (18) of development mine working (4) to sump (19) of well shaft (1) for cleaning and accumulation. Then, some part (28) of accumulated inflow is supplied by means of pump (22) of well water drainage via pipeline (21) to surface (9) into closed pipeline (20), and from it to water bearing horizon (3) through pumping wells (10) pre-drilled from surface (9) within cone of depression (27), thus providing such pumping mode that pumping flow rate Q3 is less than pumping-out flow rate Q0, and heads H3 of underground water in the propagation area of pumped water are less than heads H0 out of this area, i.e. they provide the compliance with conditions Q3<Q0 and H3<H0.

EFFECT: providing environmentally safe utilisation of technogenic drainage water.

1 ex, 6 dwg, 1 tbl

FIELD: mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.

SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and from pit bottom; performing explosions in wells surrounding kimberlite pipe perimeter and carrying-out hydraulic fracturing from wells drilled from pit bottom to create jointed subvertical and subhorizontal rock fissured zones, which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.

EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.

FIELD: mining, particularly mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.

SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and performing explosions through regular system from pit bottom to create joined subvertical annular and subhorizontal rock fissured zones which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.

EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.

FIELD: mining, particularly to reduce ejection of underground water flowing into mine during mining operations to ground surface.

SUBSTANCE: method involves receiving and collecting of mine inflow, which enters mining zone from cone of depression along mine tunnels; cleaning mine inflow; accumulating thereof in underground water accumulation means and delivering mine inflow into water-bearing seam. Mine inflow is supplied out of cone of depression located outside of mining zone in direction of water-bearing seam depression line to provide water return in operating mine tunnels, wherein distance between lower edge of cone of depression and point of mine inflow supply must be not less than width of mine inflow spreading in water-bearing seam. Mine inflow to be discharged from water accumulation means is supplied to intermediate sump and then is filtered in water-bearing seam due to intermediate sump location in water-bearing seam. Mine inflow is supplied to underground or land-based intermediate sump.

EFFECT: increased efficiency of hydrological regime recovery and improved ecological safety due to landscape conservation and enhanced industrial safety due to elimination of underground gas accumulation in dewatered water-bearing seams.

4 cl, 3 dwg

The invention relates to the construction and mining and can be used in mining and underground construction

The invention relates to hydraulic construction and can be used for dewatering sandy soils during construction of engineering structures

FIELD: mining, particularly to reduce ejection of underground water flowing into mine during mining operations to ground surface.

SUBSTANCE: method involves receiving and collecting of mine inflow, which enters mining zone from cone of depression along mine tunnels; cleaning mine inflow; accumulating thereof in underground water accumulation means and delivering mine inflow into water-bearing seam. Mine inflow is supplied out of cone of depression located outside of mining zone in direction of water-bearing seam depression line to provide water return in operating mine tunnels, wherein distance between lower edge of cone of depression and point of mine inflow supply must be not less than width of mine inflow spreading in water-bearing seam. Mine inflow to be discharged from water accumulation means is supplied to intermediate sump and then is filtered in water-bearing seam due to intermediate sump location in water-bearing seam. Mine inflow is supplied to underground or land-based intermediate sump.

EFFECT: increased efficiency of hydrological regime recovery and improved ecological safety due to landscape conservation and enhanced industrial safety due to elimination of underground gas accumulation in dewatered water-bearing seams.

4 cl, 3 dwg

FIELD: mining, particularly mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.

SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and performing explosions through regular system from pit bottom to create joined subvertical annular and subhorizontal rock fissured zones which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.

EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.

FIELD: mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.

SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and from pit bottom; performing explosions in wells surrounding kimberlite pipe perimeter and carrying-out hydraulic fracturing from wells drilled from pit bottom to create jointed subvertical and subhorizontal rock fissured zones, which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.

EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.

FIELD: mining.

SUBSTANCE: method involves collection of underground water to manifold (17) around development zone (26) of ore (8) deposit (7) so that cone of depression (27) is formed owing to operation of rings (14) of upward discharge wells (15) drilled out of drain annular mine working (6). Inflow is supplied from manifold (17) of mine working (6) by gravity via pipeline (18) of development mine working (4) to sump (19) of well shaft (1) for cleaning and accumulation. Then, some part (28) of accumulated inflow is supplied by means of pump (22) of well water drainage via pipeline (21) to surface (9) into closed pipeline (20), and from it to water bearing horizon (3) through pumping wells (10) pre-drilled from surface (9) within cone of depression (27), thus providing such pumping mode that pumping flow rate Q3 is less than pumping-out flow rate Q0, and heads H3 of underground water in the propagation area of pumped water are less than heads H0 out of this area, i.e. they provide the compliance with conditions Q3<Q0 and H3<H0.

EFFECT: providing environmentally safe utilisation of technogenic drainage water.

1 ex, 6 dwg, 1 tbl

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive substances (ES) charges formation in wells and can be used during blasting upward boreholes charging, regardless of their watercut degree, on underground mining works for extraction of minerals. Method of blasting upward boreholes charging, including live primer location in well upper part with subsequent well filling with ES and formation, or not, of stemming below ES. In well upper part above live primer drain cavity is created, by arranging plug with drain tube in well, wherein tube lower end, after charge formation, is located below charge.

EFFECT: invention allows to ensure stability of ES charge column under conditions of large water influx.

1 cl

FIELD: mining engineering.

SUBSTANCE: mine drainage during flat and pitching mining of coal deposits with combined method includes sewage and drainage ditches of mine workings, drain sumps, pumpsets on the lower mine and open-cast horizons, pumping stations with or without drain sumps on the upper mine horizons sublevels, drain sumps and disinfection of mine waters on the surface system, connected into a single complex by a network of pipelines with stop valves. In underground drain sumps, located on the lower mine workings horizons, gravity growths of underground mine water come from the gutters of underground mine workings through underground water pre-treatment complexes, which serve to separate large and suspended particles up to 0.15 mm and immiscible liquids and floating objects with a density below water by mechanical and electrophysical methods. Then, they are delivered by the pumpsets to the drain sump, located on the lower horizon of open-cast, where they are mixed with the mine growth of open mine workings and by pumping units, located on the sides of open-cast or floating pontoon is delivered to the deep water purification complex on the surface, from where, purified and disinfected using mechanical, physical chemical methods, it flows into the surface drain sump and, after sludge, is discharged onto the terrain or external water bodies.

EFFECT: increasing the degree of mine waters cleaning and wear resistance of equipment, ensuring elimination of multistage, reducing capital costs.

3 cl, 1 dwg

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