The way to protect the soil of the earth from pollution of mine water

 

(57) Abstract:

The invention relates to the mining industry. Well loosening rocks soil layer of lava drilled at the end of the square out space not covered by the wells from which contour extraction field excavations. The angle of inclination of wells equal to the angle of inclination of the lower or sliding rocks, the length of the wells corresponds to a possible settlement of the volume of the tank, the distance between the wells along the lava equal to 1.8 range, between the rows of wells across the lava is daily podvigina lava, and in the drain ditch bottom haulage generation set the window through which regulate the flow of water resulting from the goaf to the mine sump for pumping to the surface. Protection of the earth's soils from the mine water penetration through cracks. 3 Il.

The invention relates to the mining industry, namely to underground coal mining and the environment at the same time.

Known way to protect the soil of the earth from pollution of mine water, which in its collection through the workings of the mine in a pump groove and the pumping of mine water to the surface on the trunk [1]. The lack of pic is this and it cracked into soil of the earth, contaminating it.

The closest technical solution of the method is a method of protection of the soil by collecting mine water in wells loosening drilled in rocks, soil production [2] . The disadvantage of this method is the lack of protection of the soil of the earth from the mine water penetration through cracks as the water from the goaf just deposited.

The essence of the invention lies in the fact that wells loosening rocks soil layer Buryats of lava and from counting excavation field excavations, while the angle of wells equal to the angle lowering or falling rocks, the length of the wells corresponds to a possible settlement of the volume of the tank, the distance between the wells along the lava equal to 1.8 range, between the rows of wells across the lava is daily podvigina lava, and in the drain ditch bottom haulage generation set the window through which regulate the flow of water resulting from the goaf to the sump mine.

Drilling loosening certain length of lava in the area of the square goaf together with the wells from which contour extraction field excavations creates the effect of having the tank in question developed the first corner of the sliding rocks, increases the resistance of the tank. The distance between the rows of wells along the lava equal daily podvigina lava, due to the fact that drilling is in the area, unloaded from the reference pressure.

The choice of the distance between the wells is equal to 1.8 range, due to the fact that in this case, the coverage area of the two holes overlap on the square 0.2 radius of the well. In other cases, the overlap will not be or wells will be drilled often, which is economically disadvantageous. The presence of a window in a pump groove allows you to make an excessive flow of water evenly.

The result is this water in the pores, which dries rock above the goaf, and also allows you to close individual microcracks in rocks due to additional compression.

The proposal is illustrated by the following drawings. In Fig. 1 shows a plan of the extraction field, Fig. 2 is a cross section in the middle of the lava, I-I, Fig. 3 is a cross section of the lower haulage drift, II-II.

The method is as follows.

Of openings 1 and 2 for lava drilling of wells loosening 3 and 4 at an angle equal to the angle of sliding rocks, and a length corresponding to the possible volume of the in nformation 1, equal daily podvigina lava 7.

Water from the overlying rocks going into the loosened soil, the tank 8 on the entire surface goaf. As the filling of its surplus comes in a pump pit 9 haulage production. The uniformity of the flow of excess water is controlled by the window 10 that is installed in the groove that ahead of lava /a section II-II/.

Sources of information:

1. Shevyakov L. D., A. Bredikhin N. Mine drainage. - M.: Whiteheat, 1960.

2. Belyaev E. C. Geometric transformation and protection of the undermined areas. - M.: Nauka, 1988. - 191 S.

The way to protect the soil of the earth from pollution of mine water, including drilling a series of wells digging in rocks, soil excavations, collection of water in loosening the soil, characterized in that the wells loosening the Buryats of the workings contour extraction field and lava in developing not covered by the wells from which contour extraction field excavations, while the angle of wells is equal to the angle lowering or falling rocks, the distance between the rows of wells across the lava equal daily prodvigenie lava, the distance between the wells along the lava equal to 1.8 range, and the length Erbodi install window, which regulate the flow of water resulting from the goaf to the mine sump for pumping to the surface.

 

Same patents:

The invention relates to the mining industry, in particular to mine settling ponds, where the water clarification and dewatering the resulting precipitate
The invention relates to the mining industry and can be used in underground mining of shallow layers of minerals with a stable, powerful, watered rocks of the main roof

The invention relates to a method of drainage of irrigated fields and can be used when selecting drilling locations of wells intended for water supply

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

The invention relates to mining, mainly to the coal industry

The invention relates to the mining industry

The invention relates to the mining industry and can be used to protect the reservoir excavations in the zone of influence of the treatment works from the reference pressure, which occurs when the seam with a complete collapse of the roof rocks in the developed space

The invention relates to mining, in particular to methods of mining of bedded deposits on the development system long poles along strike

The invention relates to the field of mining, particularly underground coal mines

The invention relates to the mining industry

The invention relates to the field proud of the case, namely to the extraction of pillars of coal left about a group of celestial workings for their maintenance during operation

FIELD: mining industry.

SUBSTANCE: method includes driving of layer transporting and ventilation mines along soil and ceiling of bed, in massive and in extracted space, cutting of cleaning mines in cross-section of bed at angle of 27, mechanized delivery of coal along bed mines to coal furnaces and vertical dropping of coal to furnaces. Extraction of slanted transverse bed is performed along bed diagonals having direction to horizon at angle of 27, to provide for free sliding of coal without degradation. Delivery of coal from cleaning mine placed at angle of 60 to layer mine, to back field mine is performed by self-delivery from any place of extraction field along layer mine, field coal-lowering mine and field slanting coal furnace, being at angle of 27 to horizon. Field slanted coal furnaces are placed at distance from one another along 20 m normal. Field coal mines in form of fans of three mines are connected on field slanted coal furnaces at distance of fan start from one another of 60 m with output of mines ends to each layer mine of group of three above-lying slanted-transverse layers for whole diagonal length of extraction field at distance between mines outputs along layer soil of 60 m. Ceiling of cleaning mines may be supported without load, utilizing mechanical traction on the side of ventilation furnaces for pressing moveable support tool to layer ceiling.

EFFECT: higher efficiency.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.

EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

FIELD: mining industry.

SUBSTANCE: method includes determining gas potential of extracted bed in limits of extraction area and monitoring of relative gas-escape from extracted bed and of extracted coal with withdrawal of lava from mounting chamber. Value of primary step of main ceiling destruction is set on basis of distance from mounting chamber to point of minimal gas-kinetic coefficient values closest to it, as which coefficient relation of relative gas-escape to bed gas potential bed is taken. Value of destruction step is determined from mathematical relation, considering distance from mounting chamber to closest point of said coefficient minimal values. It is possible to construct a graph of dependence of gas-kinetic coefficient from distance between face and mounting chamber. Portions of extraction field, wherein periodical changes of gas-kinetic coefficient are observed, are related to areas of geological irregularities influence. On basis of decrease of amplitude of maximal oscillations of gas-kinetic coefficient displacement of face to exit of geological irregularities area is detected, and on basis of increase - entrance therein.

EFFECT: higher precision, higher speed of operation.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

2 dwg

Up!