The way to develop layers of minerals with interbed of breed

 

(57) Abstract:

Usage: reservoir separated by a bed of rocks. The inventive cleaning mechanized complex in the upper part of the reservoir move above the bed rock, and the lower part of the reservoir cleaning mechanized complex move below the interbed breed. The possible abandonment of zimnica in the upper part of the layer or bundle of minerals in the failure of the lava bottom of the reservoir. Shifting of the complex in the upper part of the reservoir is produced with additional excavation of minerals and Digvijay end sections of the complex or the last will nadodigal. 2 C.p. f-crystals, 6 ill.

The invention relates to the mining industry and can be used in underground reservoir or a powerful reservoir of minerals, separated by a bed of rocks.

There is a method of reservoir development of mineral resources with interbed of breed long posts, including counting posts excavations in the soil layer, the recess of the upper and lower stacks of the reservoir, leaving the rock bed in the developed space [1]

However, the known method is not effective enough due to the high trueincest is one of the excavation drifts for reuse, the complexity of the integrity of the rock bed of insufficient strength.

Closest to the proposed to the technical essence and the achieved effect is the way of the coal seams, including the preparatory excavations in soil formation for its development throughout the power cuts split furnaces in the upper and lower parts of the formation and equipment of mechanized longwall mining complexes with mobile AFC with discharging head, the recess of the upper part of the formation ahead of the excavation bottom and leaving the artificial roof, placing discharging head AFC complex in the upper part of the aquifer in the lava, shifting of the complex in the upper part of the reservoir without removing the lining element formulation [2]

Placement of end heads face conveyors at the top of the lava, with the aim not to disturb the permanent support of excavation for its better preservation when the lava at the bottom of the reservoir, is reasonable, although this increases the complexity of the recess, mounting and maintenance of the end sections of the lava. When shifting complex need to move discharging head face conveyor step, soo is that the conveyor drive with dropping head at each advance must be installed opposite the space between the lining elements of generation, to ensure that the overload of the rock mass with face to face conveyor. The lava at the bottom of the reservoir without removing the gate elements lining and subsequent recovery, is not justified, because according to the age of the complexity of seizure, attachment and maintenance of the end sections of this lava, and in addition requires conveyor drift below the level of the lava, that is, with podarki soil. Really overweight rock mass with dropping head of the lower conveyor lava on the gathering conveyor or loader requires excessive levels of soil lava above ground production of at least 0.6-0.8 m, which causes the necessity of ripping rocks in the soil layer when carrying out conveyor drift. In addition, the preservation of the conveyor drift large cross-section for reuse does not require work without removing the gate roof support, and allows its removal and subsequent construction for the passage of the lava. In addition, when working the lower lava, there is a constant danger of destruction artificial roof and breakthrough collapsed rocks in the workspace. Thus, the main disadvantage of the prototype include low efficiency of development, due to the significant the awn destruction and subsidence of the artificial roof, the need for ripping of soil development and the necessity of advancing lava with a step of lining installation output. The proposed solution is free from the above disadvantages.

The essence of the invention lies in the fact that the complex in the upper part of the reservoir move above the bed rock, separating layer, and the complex in the lower part of the layer move below the interbed breed, which is left in the developed space, after advancing complex in the upper part of the reservoir to produce additional excavation of minerals and subsequent dadieso end sections of the complex by the amount of the excess step of lining installation elaborate on step movement of the complex or artificially will not dogfight end sections of the complex on the excess amount of step movement of the complex above step of lining installation, with installation of the discharging head opposite the space between the lining elements of generation, moreover, as the curvature of the front of the lava respectively carry out periodic additional excavation and dadieso or nadodigal plot of the complex, located between its end parts, in the lower part of the reservoir discharging head face conveyor feature in the development and predki the AFC in the movement step of the complex, after dropping movement of the head restores the extracted elements lining production.

In addition, the invention consists in the fact that when there is insufficient strength of the rock interlayer separating layer, work in the face of the upper part of the reservoir leading to the abandonment of zimnica, or leave a protective bundle of minerals in the roof of the lava, working in the lower part of the reservoir, or use a combination of these techniques.

In addition, the invention consists in the fact that when exceeding the upper limit of the allowable timing lava bottom layer of lava of the upper part of the formation, development and testing of this lava suspend and resume after reaching the lower limit of advance.

The invention is aimed at improving the efficiency of development by advancing complex in lava, located in the upper part of the formation step of lining installation production so that the drive face of the conveyor with dropping head located opposite the gap between the permanent lining elements develop, and as the curvature of the front of the lava carried out periodically, additional excavation and dadieso or nadodigal uchastkovogo pipeline have in shaping and shifting of the complex exercise of its step movement to the removal of the lining elements to develop and then restore them after the movement of the complex. Thus, the lava in the upper part of the layer move to the step of lining installation generation without removing its mounting, providing the smallest deformation of the mounting for the lava at the bottom of the reservoir. The lava at the bottom of the layer move to the step of advancing complex with the removal of items lining the generation that prevent movement and subsequent recovery of the recoverable items lining after podvigina complex. If the strength of the rock interlayer separating layer, and inadequate happen roof caving in a lava bottom of the reservoir, increase the total strength of left artificial roof by leaving zimnica in the face of the upper part of the layer, or protective packs of minerals in the roof of the lava, working in the lower part of the reservoir, or use a combination of these techniques. The choice of the rational receive the protection of the rock layer from destruction depends on the strength and quality of the packs mineral adjacent to breed proloy top and bottom, on the basis of economic viability losses of fossil and dealt with this efficiency. In order to maintain an optimal distance between the lava at the top and lava in the lower parts of the reservoir, about the wounds of the rock bed when exceeding the upper limit of the allowable timing lava bottom of the reservoir upper left part of the reservoir, the development of this lava suspend and resume after reaching the border ahead.

Thus, the technical result of the proposed solutions in comparison with the prototype is to improve development efficiency, reduce the labor intensity of the seizure, attachment and maintenance of the end sections of the lava, the exception is necessary Podravka soil or abandonment of zimnica in the soil reservoir to ensure the proper overload of the rock mass when the lava at the bottom of the reservoir.

In Fig. 1 shows the scheme for accounting treatment works complex-mechanized lavas in the upper and lower parts of the reservoir, a view in plan; Fig. 2 section a-a in Fig. 1; Fig. 3 is a view along b-B in Fig. 2; Fig. 4 same as in Fig. 2, but with the abandonment of zimnica the lava from the top of the reservoir and protective packs of minerals in the lava in the lower part of the reservoir of Fig. 5 shows a diagram of additional dodici end sections of the complex when exceeding the step of lining installation elaborate on step movement of the complex of Fig. 6 shows a diagram artificially nadodigal end sections of the complex if excess movement step of the complex above step supports generation.

In the implementation of the method involved the reservoir 1 through the first support 5 of the mine workings. The upper part 6 of the reservoir, the lower part 7 of the reservoir, cleaning mechanized complex 8, mobile face conveyor 9 with the head actuator 10 with dropping head 11, limit actuator 12 AFC, mobile shield support 13, the mining machine 14, longwall working face 15 in the upper part of the reservoir, cleaning the bottom 16 in the lower part of the reservoir, gathering conveyor 17 temporary 18 hours, Temnik 19 in the face of the upper part of the layer, protective pack of 20 in the lava in the lower part of the formation.

The method is as follows.

The soil of thick layers 1 mineral separated by interlayer 2 rocks, conduct preparatory development, conveyor 3 and entry and ventilation 4 drift height, designed to test the reservoir throughout the power. Preparatory development fixed constant support 5, for example, an arched cross-section. Rock proloy 2 layer 1 is divided into two parts, the upper 6 and lower 7, each of which is cut split furnace, in which is mounted treatment mechanized complexes 8, for example, type MK-85B, including mobile face conveyor 9 with the head actuator 10 with dropping head 11 and an end of the actuator 12, associated with the conveyor mobile mechanized posts of the ti layer, ongoing clearing face 16, and cleaning the bottom 15 move on proloy 2 rock, using it as a soil lava, and cleaning the bottom 16 move under the bed rock, using it as the roof of the lava. Rock the interlayer 2 is used as an artificial roof and after the passage of the lava of the upper part 6 of the reservoir, and then the lower part 7 of the layer left in the area collapsed rocks roll. Shifting of complex 8 in the top 6 of the reservoir 1 are hosted dropping head 11 of the head actuator 10 in lava without taking the permanent lining 5 of the conveyor 3 drift. Similarly, in the lava place and limit the actuator 12 and the shifting of produce without removing elements lining ventilation 4 drift. However, due to the mismatch of the step of lining installation 5 develop and pitch movement of the mechanized complex 8 discharging head 11 of the head actuator 10 after the movement of the complex 8 is placed in front of the lining element 5 conveyor drift 3 so that the overload of the rock mass with the AFC 9 on the gathering conveyor 17 sadrudin. In order to ensure the normal operation of complex 8 in the top 6 of the reservoir 1 after advancing complex produce additional excavation of minerals wiem the th 4 drifts on hag step of lining installation 5 elaborate on step movement of the complex thus to the head actuator 10 with dropping head 11 located opposite the space between the lining elements 5 production (Fig. 4). If the movement step of the complex exceeds 8, the step of lining installation 5 generation, the end sections of the complex artificially nadodigal, again ensuring that the head actuator 10 with dropping head 11 located opposite the space between the lining elements 5 production (Fig. 5). The accumulation of additional dodigen or nadodigal end sections at 8 and curvature of the front of powered roof supports 13 lava, located in the top 6 of the reservoir 1, respectively, carry out periodic additional recess with the mining machine 14 and dadieso or nadodigal plot of the complex, located between its end sections. Thereby produce the alignment of the front mechanized lining 13 stope 15 (Fig. 4 and Fig. 5 by the dashed lines).

In the lower part 7 of the reservoir 1 discharging head 11 of the head actuator 10 AFC 9 feature directly in the formulation, which requires the removal of the elements of constant drift lining 5, hindering the advance. Therefore, immediately before the movement of the end sections of the comp is the Elements of constant drift lining 5, located at a distance of step movements of complex 8, disassemble, make the movement of the complex step of advancing and consequently restores the extracted elements lining production.

If the strength of the rock bed 2, a separating layer 1 is insufficient and there are roof caving in the face 16 of the lower part of the layer 7, increase the strength leave artificial roof by leaving zimnica 19 in the soil lava 15 of the upper part 6 of the reservoir, or by leaving a protective packs of 20 mineral in the roof of the lava 16 of the lower part 7 of the reservoir, or both leave zemnick 19 in the face of the upper part of the reservoir and protective pack 20 in the lava in the bottom of the reservoir. The choice of a rational acceptance of the protection of the rock bed 2 from destruction depends on the strength and quality of the packs mineral adjacent to breed proloy top and bottom, on the basis of economic viability losses of fossil and achievable efficiency of its production. The stronger pack mineral adjacent to proloy 2 species, the lesser thickness of zemnick or protective pack, you need to set to ensure the strength of the artificial roof, and the lower the quality is, Therefore, the thickness of zimnica 19 or protective packs of 20 in each case is determined by calculation.

Between podvigina stope 15 of the upper part 6 of the reservoir 1 and clearing face 16 of the lower part 7 of the reservoir should be kept optimal distance determined empirically in each of the mining and geological conditions of occurrence of layers by the values of the highest integrity breed interbed between parts of the reservoir and the least deformation of the mine workings. Usually the acceptable limits of magnitude ahead of one another lava lava determined with an accuracy of 2oC5 m In excess of the limits ahead of 2oC5 m lava 16 of the lower part 7 of the reservoir 1 lava 15 of the upper part 6 of the reservoir, the improvement of lava 15 of the upper part of the reservoir suspend and resume after reaching the lower limit of advance. For example, the optimal distance between the faces is defined in 35 m limit values lead 3 m, i.e. the lowest value of the advance should be 32 m, maximum 38 PM In excess of the value of the lead 38 m practicing lava 15 of the upper part 6 of the reservoir 1 suspend and resume after reaching the lower limit of the lead 32 PM

The way to develop layers of minerals with interbed of breeds, including the preparatory excavations in soil formation Istih faces mechanized complexes, with mobile AFC with discharging head, the recess of the upper part of the formation ahead of the excavation bottom and leaving the artificial roof, placing discharging head of the AFC system of the upper part of the aquifer in the lava, shifting of the complex in the upper part of the reservoir without removing the lining elements output, characterized in that the complex in the upper part of the reservoir move above the bed rock, separating layer, and the complex in the lower part of the layer move below the interbed breed, after the movement of the complex in the upper part are subject to additional excavation of minerals and the subsequent shift end sections of the complex by the amount of the excess step of lining installation elaborate on step movement of the complex or artificially nadodigal end sections of the complex on the excess amount of step movement of the complex step over the support, with the installation of discharging head opposite the space between the lining elements develop, and as the curvature of the front of the lava respectively carry out periodic additional pocket and a slip or nadodigal plot of the complex, located between its end parts, in the lower part of the reservoir spasib the clients lining production, preventing movement of the discharging heads the AFC in the movement step of the complex, followed by movement of the discharging head restores the extracted elements lining production.

2. Method development under item 1, characterized in that when there is insufficient strength of the rock interlayer separating layer, work in the face of the upper part of the reservoir leading to the abandonment of zimnica, or leave a protective bundle of minerals in the roof of the lava, working in the lower part of the reservoir, or use a combination of these techniques.

3. Method development for PP.1 and 2, characterized in that when exceeding the upper limit of the allowable timing lava bottom layer of lava of the upper part of the formation, development and testing of this lava suspend and resume after reaching the lower limit of advance.

 

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