Combined method development suite of coal seams

 

(57) Abstract:

Purpose: combined method development Suite of coal seams relates to the mining industry. The essence: a combined method of mining coal seams includes open and underground extraction technology of coal, with underground development of coal seams or areas beyond the contours of the career fields that begin after opening their outputs under load or haulage horizons previously worked podathey rock ledges for Stripping operations using working platforms ledges as ventilation horizons and opening haulage (conveyor) horizons underground works or deeper ledges quarry, or by conducting an inclined burndown stratum to be mined by underground methods. 3 Il.

The invention relates to the mining industry, and is intended for testing suites coal seams using open pit and underground technology of mining operations.

Known open-underground mining of mineral deposits, including the excavation of minerals in the open way, i.e. with the use of Stripping and transporting helpful the technical nature of the present invention is a method of joint open pit and underground technology of mining in the development of mineral deposits, the essence of which is that the Suite of steeply dipping strata minerals include testing the main thick layers and layers that are deposited in its hanging wall side, open way, and layers that are deposited in the supine side, underground method [2] notch formations underground method is story or sublevel caving to break them open with formation of stable zones of backfill materials, and after uglubki public works on the horizons below the worked by underground methods of podathey produce the notch mercanery pillars.

The disadvantage of this method of development (prototype) is that by underground methods are developed only those layers (low power), which lie in the supine side of the Suite, and are almost in isolation from public works, and the opening and operation of these layers is carried out through extensive underground workings with all the cost of underground mining technology coal.

The aim of the invention is to eliminate said drawbacks of the prototype, which is achieved by the fact that when mining Suite steep and inclined layers with the use of combined technologies, including outdoor and underground methods of extraction SINAUT to produce after opening their outputs under load or haulage (conveyor) horizons, previously worked podathey (floors), rock ledges for Stripping operations using the working area of the ledges as ventilation horizons and opening transport horizons underground works or deeper ledges quarry, or by carrying out incline (slope) for the stratum to be mined by underground methods, while underground (basement) way to work out the layers that are deposited not only in the supine side, suites, but also in the hanging.

In Fig. 1 shows the scheme of development of mining operations in the career field, represented by four steep layers: one powerful (core) layer M and three layers WITH1WITH2and C3average power (from 1.3 to 3.5 m); Fig. option 2 open-pit and underground mining Suite sloping layers; Fig. 3 the same plan (fragment).

Trace the development of mining when mining Suite abrupt layers to the level of the fifth horizon. On the first two horizons (the ledges) excavation of coal is conducted only on a powerful layer M In the conduct of Stripping on the top bench during recess powerful stratum of M on W horizon is opening the upper part of the accompanying reservoir2located in the rocks lying flank of the main reservoir M is in formation drifts 2, driven on the length of the extraction field in that and the other side of the crosscut 1. The roadway 2 and crosscut 1 equipped with conveyor transport or transport. With drifts 2 or directly from the soil of the first ledge, which revealed the formation WITH the2, drilled wells for site preparation layer to wastewater treatment works. Sewage treatment works are well-known in the technology of underground work ways depending on the geological conditions of the coal seam and surrounding its lateral rocks: with the breaking of coal long wells, using panel ceilings, plows and excavation machines in the complex with light mechanized roof supports or without mounting and fencing bottom space. Proven areas of the reservoir WITH2on the second ledge filled with barren rocks from Stripping operations on the first ledge. When excavation of the reservoir M III on the horizon, the exposed areas of the layer WITH3crosscut 3 and formation drifts 4 to the level of the third ledge with further underground development and delivery of coal produced in the third horizon of public works.

With the development of mining dredging powerful layer M on the fourth horizon (the sequence number of the horizons shown in the circuit layer M, the same numbers the better exposed layer WITH2(at the level of the conveyor horizon of the first underground substage), and on the side of the fourth ledge traversed verslag 5 and drifts 6.

When excavation of the reservoir M open operations on V horizon opened outputs under the sediment layer WITH1open work reveals a layer WITH3at the level of the conveyor drift 4 and Kerslake 3 of the first underground floor (substage). At this time, pass verslag 7 in the side seam3and conveyor drifts 8 on it for the underground mine, second floor 9, the height of which is equal to the sum of the heights of two benches at public works (IV+V). At the same time pass the intermediate crosscut 10 for reservoir1and drifts 11 on it.

With further deepening of mining by open mining of the seam M the development of mining activities on the underground seam WITH1WITH2and C3are in the same sequence: every two ledge to open the dredging of the reservoir M is fulfilled one floor (substage) for collection of related layers. When this treatment underground work on these layers begin after their upper horizon opened Stripping ledges. This procedure leads to the above advantages of underground new equipment for drilling wells, no installation of cameras at a shield recess formations etc.

Combined semi-underground development method should be used when it is more economical compared to the open method. Another example of its application can be conditions that occur when testing Suite steeply vypilivaya layers, for example in terms erunakovsky coal Deposit in the Kuznetsk coal basin. At a certain depth of public works, this technology is not cost-effective when compared with underground works and the development of surface mining stops, but before the construction of new mines in this mine field is still far away. Therefore, it seems quite rational seams or even a separate flat seams on rock ledges, to work on a combined (open-pit and underground) technology. To do this, for each layer, the outputs of which exposed rock ledges, passed hatchback produced output 12 (slope), with which both sides are traversed in a horizontal excavation drifts 13 and 14 for cutting faces 15 and 16. Lava equipped mechanized complexes, and the slope of the 12 high capacity conveyors. Coal seams that have outputs on b which may be developed with a high load on the longwall face (complex) 3-5 thousand tons of coal per day. Coal issued to the working area 17 of the ledge goes for internal transport, which is delivered on the career technology center.

COMBINED METHOD DEVELOPMENT SUITE of COAL SEAMS, including the opening of the reservoir, open the career development core layer ledges, underground reservoir, incoming beyond the contours of the career field or working horizon in the supine side suites, characterized in that, to improve the efficiency of mining, coal mining, dredging coal co layers hanging side suites are underground workings and underground development of coal seams or areas beyond the contours of the career field or working on the horizon from both hanging and lying laterally suites, start after opening their outputs under load or transport horizons previously worked by underground methods of podathey rock ledges on skrytnyj works using working platforms ledges as ventilation horizons and opening transport horizons underground works or deeper ledges quarry, or by conducting an inclined burndown stratum to be mined underground method is

 

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FIELD: mining industry.

SUBSTANCE: invention comprises following scheme. Oil is produced from producing wells. Potassium salts are extracted from mines and processed. Solutions are pumped into deep lying porous rock formations preliminarily revealed between oil-bearing and potassium formations. Those porous rock formations are chosen which are located below underlying stone salt. Pumping of solutions is effected through injecting wells until pressure drop in oil-bearing formation is compensated to a value sufficient to prevent deformation in potassium formations, this value being calculated using special math formula. Oil formation is then run while maintaining compensating pressure in chosen porous formation.

EFFECT: significantly reduced environmental loading and increased safety of mining operations.

3 cl, 1 dwg

FIELD: mining industry.

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EFFECT: higher efficiency.

2 cl, 3 dwg

FIELD: mining art, in particular, open-pit mining of mineral resources by high benches.

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7 cl, 6 dwg

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EFFECT: higher efficiency, effectiveness, broader functional capabilities.

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FIELD: mining industry.

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2 cl, 3 dwg

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EFFECT: higher efficiency.

7 cl, 11 dwg

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EFFECT: higher safety, higher efficiency.

1 dwg

FIELD: mining industry.

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EFFECT: higher efficiency.

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FIELD: mining industry.

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EFFECT: higher efficiency.

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