Complex for tunnelling of subway mine of round cross section

FIELD: mining.

SUBSTANCE: complex for tunnelling of a subway mine of round cross section comprises mechanisms of rock breaking arranged on a carcass equipped with a movement drive, a transshipment device for loading of rock mass into transport facilities. The transshipment device is made in the form of a chute of cylindrical shape fixed on the frame and normally oriented towards the bottomhole, the lower edge of the chute is located at the sharp angle a to the mine base and with limitation of the upper edges of the chute with the horizontal plane arranged at the level of the central axis of the mine or with certain downward displacement. Inside the chute in its middle part there is an infinitely closed double-chain scraper contour on driving and tension sprockets with a curvilinear external profile of scrapers, and with the possibility of interaction of scrapers in the lower weight-bearing branch with the chute base, and the upper idle branch - with resting against the rollers.

EFFECT: improved reliability of complex operation, elimination of rock mass accumulation near a bottomhole as a result of mine tunnelling, reduced labour intensiveness of complex maintenance and its increased efficiency due to elimination of complex idle time.

3 dwg

 

The invention relates to drilling systems in underground conditions, and in particular to equipment for drilling underground workings circular cross-section.

Famous adopted for the prototype system for drilling openings containing placed on supplied with the drive movement of the frame mechanisms of rock failure in six disk cutters, two internal and six external, bucket handling device and conveyor system for loading of the rock mass in the vehicle (Pokrovsky mathematical SCIENCES. Construction and reconstruction of mines, part 3, vol. 5, M, G n-t publishing house on mining, 1963, p.260-262, RIS).

The disadvantages include the complexity of the equipment for handling the rock in the vehicle and cannot be removed from a face full volume of the rock mass, which causes the need to periodically stop and remove accumulated at the bottom balances the mountain mass. In addition, you should periodically remove also spillage, resulting in Podkopaeva space when cleaning the idle branch of the conveyor belt during its interaction with the roller, which is difficult because of the limited height Podkovyrov space.

The technical result of the invention is to improve the reliability of the complex is due to simplification of construction equipment for transmission of the rock mass in the vehicle, to avoid congestion at the bottom of the rock mass formed by the sinking of making metro a circular cross-section, as well as reducing the complexity of the maintenance and increase productivity by eliminating downtime of the complex.

The technical result is achieved by the fact that in the complex for sinking the production of underground circular cross-section, containing placed on supplied with the drive movement of the frame mechanisms of rock failure, overload device for loading of the rock mass in the vehicle, which is made in the form attached to the frame is properly oriented to the bottom of the trench has a cylindrical shape corresponding to the cross section a cross-country output, with the location of the lower edge of the chute at an acute angle α to the base of production and restricting the upper edges of the gutter horizontal plane located at the level of the Central axis of the developing, or some shift down, the angle α of inclination of the base of the trench is selected under condition of providing its width on the opposite face side less than the width of the body trucks transporting extracted with sinking develop the breed, and inside the gutter in its middle part is closed indefinitely on the drive and tension sprocket TLD is a chain scraper contour with curved external profile scrapers with a radius of curvature, equal to the inside radius of the gutter, and interoperable scrapers lower load-carrying branches from the base of the trough, and the upper idle branches resting on the rollers, with the drive sprocket situated on the side of the discharge edge of the chute and the end - side of the face in the direction of movement of the lower branches away from the face, and the speed of movement of the scraper-chain transfer path is determined from the relationship

vF=vtoπR2,

where F is the cross-sectional area scrapers, m2, v, vtoaccordingly, the speed of the scraper-chain circuit and the ROP output, m/s, R is the radius of the output, m

Complex for sinking the production of underground circular cross-section presented in figure 1 - plan, figure 2 - section a-a of figure 1, figure 3 - a view B of figure 1.

Complex for sinking the production of underground circular cross-section contains placed on supplied with the drive movement of the frame (not shown) mechanisms of 1 of rock failure, overload device for loading of the rock mass in the vehicle, which is made in the form attached to the frame is properly oriented to the slaughter 2 trench 3 has a cylindrical shape corresponding to the transverse profile passable generation 4. The lower edge 5 of the chute 3 is located at an acute angle α to the base mirabadi 4, and the upper edge 7 of the chute 3 is limited to the horizontal plane located at the level of the Central axis of generation 4, or with some shift down, depending on the design of mechanisms 1 of rock failure. In this case the angle α of inclination of the base of the trough (bottom edge 5) selected from a width of the trench 3 on the opposite face 2 side less than the width of the body of the trolleys 8, transporting extracted with sinking generation 4 breed. This is because the radius R of the trench 3 is the same throughout its length, and the top of the chute 3 is limited to the horizontal plane. Therefore, when inclined chute 3 with the cylindrical surface of its upper side edges 7 approach each other when you change the width of the trench 3 from the value equal to twice the radius R of generation 4, to the same width as the body of the trolley 8 (figures 1 and 3). This minimum width is precisely determined by the angle α of inclination of the chute, the smaller its width at the final edge in the area over the body of the trolley 8. Therefore, the angle α of inclination of the chute 3 must be set depending on the width of the body used trolleys 8 for removal of rock by drilling production 4.

Inside the trench 3 in its middle part is indefinitely closed to the drive 9 and the tension 10 stars double circuit scraped the inhibiting circuit 11 with a curved outer profile scrapers 12 with their radius of curvature, equal to the inside radius of the trough 3, and interoperable scrapers 12 of the lower load-carrying branch circuit scraper circuit 11 with the base (5) of the trench 3 and the upper idle branches resting on the horizontally oriented rollers 13. While the drive sprocket 9 is placed on the discharge edge of the chute 3, a tensioning sprocket 10 - from the bottom 2 in the direction of the 14 movement of the lower branches away from the bottom 2. The speed of movement of the scraper-chain transfer path is determined from the relationship

vF=vtoπR2,

where F is the cross-sectional area scrapers, m2, v, vtoaccordingly, the speed of the scraper-chain circuit and the ROP output, m/s, R is the radius of the output, m

15 - loose rock mass formed by the sinking of generation 4.

The complex operates as follows. In the process of drilling a generation 4 produced by the mechanisms of destruction 1 rocks the entire volume of the loose rock mass 15, when promoting complex in the side of the face 2, is placed within the trough 3 and is continuously removed from the bottom 2 the lower load-carrying branch circuit scraper circuit 11 by gripping the rock mass 15 scrapers 12 when they are walking around idler sprockets 10 and further transportation of the mountain mass 15 by its offset scrapers 12 of the base (5) VC is BA 3 in the direction 14 with the rise angle α with respect to the base 6 generation 4. When rounding circuit scraper circuit 11 of the drive sprocket 9 transported the rock mass 15 is discharged into the body of the trolleys 8 and the upper idle branch-circuit circuit 11 moves downwards, toward the idler 10 based on support rollers 13. Thus due to the curvilinear cross-sectional shape of the trough 3, the overlapping width generation 4, and placement in the Central part of trench 3 double circuit scraper circuit 11 with the lower load-carrying branch all formed by the sinking of generation 4 mountain mass 15 is displaced under the action of its own weight in the Central part of the trough 11 and picked up moving away from the bottom scrapers 12 and subsequent unloading of the rock mass 15 in the body of the trolleys 8.

Features of the invention provide increased reliability due to the simplification of construction equipment for transmission of the rock mass in the vehicle, to avoid accumulation at the bottom of the rock mass formed by the sinking of making metro a circular cross-section, as well as reducing the complexity of the maintenance and increase productivity by eliminating downtime of the complex.

Complex for sinking the production of underground circular cross-section, containing posted on supplied privado the movement of the armature mechanisms of rock failure, handling device for loading of the rock mass in the vehicle, characterized in that the handling device is made in the form attached to the frame is properly oriented to the bottom of the trench has a cylindrical shape corresponding to the cross section a cross-country output, with the location of the lower edge of the chute at an acute angle α to the base of production and restricting the upper edges of the gutter horizontal plane located at the level of the Central axis of the developing, or some shift down, the angle α of inclination of the base of the trench is selected from a condition of maintenance of its width on the opposite face side less than the width of the body trucks transporting extracted with sinking develop the breed, and inside the gutter in its middle part is closed indefinitely on the drive and tension sprockets double circuit scraper contour with curved external profile scrapers with a radius of curvature equal to the inside radius of the gutter, and interoperable scrapers lower load-carrying branches from the base of the trough, and the upper idle branch - leaning on the rollers, with the drive sprocket situated on the side of the discharge edge of the chute and the end - side of the face in the direction of movement of the lower branches away from the face, and the speed of movement of the scraper-chain what about the traction circuit is determined from the relation:
vF=vtoπR2,
where F is the cross-sectional area scrapers, m2,
v, vtoaccordingly, the speed of the scraper-chain circuit and the ROP output, m/s,
R is the radius of the output, m



 

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