The way to protect excavations and soil of the earth from pollution by mine waters

 

(57) Abstract:

The method consists in the fact that the drilling hole fans operate conveyor and ventilation drifts at a distance from each other equal to the step of lowering the rocks of the immediate roof, with long well before the fan is brought to the upper cavity Weber in the arch collapse or subsidence of rocks, and the short - to the bottom of the cavities. After this binding, the solution is served in the well and fill them oral Weber. The result is improved stability of the rocks, close cracks and stops the migration of water in production, and in the direction of the earth's surface. 3 Il.

The invention relates to the mining industry, namely the way to protect excavations and soil of the earth from pollution by mine waters in mining of coal with full or partial mined-out space.

There is a method of protecting mining by drilling hole fans inside arch collapse or subsidence of rocks from the haulage and ventilation drift and subsequent torpedoing wells for lava (1). However, when using this method, the cavity between the rocks are filled with water, which then falls through the cracks in the mountains is the procedure breed are fixed in the immediate vicinity of the reservoir in the immediate roof. Other cavity within the arch collapse or subsidence of rocks can be filled mine with water.

The closest technical solution of the method is a method of protection of excavations and soil of the earth from pollution by mine waters, including the drilling of the hole fans inside arch collapse or subsidence of rocks. In this way the roof of the workings serves fastening solution.

The essence of the invention is that the way to protect excavations and soil of the earth from pollution by mine waters, which includes the drilling of fans cementing wells of the conveyor and ventilation drifts over the lava inside arch collapse or subsidence of rocks and the flow of solution into the wells, fans cementing wells take at a distance from each other equal to the step of lowering the rocks of the immediate roof, with a long hole in the fan lead up to the upper cavity Weber in the arch collapse or subsidence of rocks, and the short - to the bottom of the cavities.

Filling of all cavities Weber, located at different heights from the reservoir within the arch collapse or subsidence of rocks, prevents the water. The distance between the fans, equal step of lowering the rocks of the immediate roof, stopping the pad from sliding the major cracks, the water levels from one horizon to another can rise to the earth's soils. Water migration in production, and in the direction of the surface stops.

The proposal is illustrated by drawings. In Fig. 1 shows a plan of the extraction field: Fig. 2 is a cross-section of the field, a-a, Fig. 3 is a longitudinal section of the field, B-B.

The method is as follows.

From haulage 1 and vent 2 drifts Buryats fans wells 3 different lengths falling within the cavity Weber 4, located at different heights from the reservoir. Drilling begins at 5 lava laid over mined-out space 6. The distance between the hole fans take equal step of lowering the rocks of the immediate roof and the angle of the wells in the goaf side is equal to the average angle 7 the base of the arch collapse or subsidence of rocks 8. After drilling 3 they serve fastening solution, which enters the cavity Weber, filling the possible receivers of mine water.

The implementation of the method is illustrated by example to determine the maximum length of the well based.

< / BR>
where ll- half the length of the face;

- coefficient taking into account the strength then the components in the formula: ll= 50 m = 0,8 (data practices), = 65.

Then the maximum length of the wells will be about 22 m, which is achievable in these drilling conditions.

The sources of information.

1. Mashkovtsev I. L. the Technology of underground coal mining (the manual. - M.: Publishing house of UDN, 1983, - 79 C.)

2. Shirokov A. P. bolting and pisacreta. - M.: Niepold. Review, 1978, S. 32.

3. N. And.Melnikov. Holding and fastening mining. - M.: Nedra, 1988, S. 317-318.

The way to protect excavations and soil of the earth from pollution by mine waters, including the drilling of wells for the lava inside arch collapse or subsidence of rocks and the flow of solution into the wells, wherein the wells are drilled from the conveyor and ventilation drifts fans at a distance from each other equal to the step of lowering the rocks of the immediate roof, with a long hole in the fan lead up to the upper cavity Weber in the arch collapse or subsidence of rocks, and the short - to the bottom of the cavities.

 

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