A low-cost and high-efficiency rock crushing method applicable to roadway mining

Abstract

The present invention relates to a method for low-cost and high-efficiency rock crushing applicable to roadway mining, belonging to the technical field of rock crushing in mine roadways. It includes two parts: roadway layout and the installation method of crushers. The roadway layout plan includes 3 maintenance and installation roadways, 2 main chutes, several sub-chutes, several stage haulage roadways, several vibration generators and several piezoelectric ceramic sheets. The sub-chutes are connected to the main chutes. The vibration generators are installed in the main chutes, and the piezoelectric ceramic sheets are installed on the inner walls of the main chutes and sub-chutes. The main chutes and sub-chutes are arranged in an inclined and multi-angle staggered form. A bunker is designed at the bottom of the main chute, and the bunker stores materials. A circle of vibration generators is installed inside the bunker, and a crusher is provided at the bottom of the bunker. By means of a specific roadway layout plan and the method of excavating a crusher cavity in the rock mass, the problems of high procurement cost of crushers, serious pollution, high energy consumption, unstable crushing quality, etc. are effectively solved.

Description

Technical Field

[0001] The invention relates to a low-cost and high-efficiency rock crushing method suitable for tunnel mining, belonging to the technical field of rock crushing in mine tunnels. Background Art

[0002] Under the background of the growing demand for resources, the scale of mining is getting larger and the depth of mining is getting deeper, which puts forward new requirements for the crushing work after rock mining. Generally, there are problems such as low crushing efficiency, high crushing cost, unstable crushing quality, serious environmental pollution and huge energy consumption. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a low-cost and efficient rock crushing method suitable for tunnel mining. Through a specific tunnel layout scheme and a method of excavating a crusher cavity in the rock mass, the problems of high crusher procurement cost, serious pollution, high energy consumption, and unstable crushing quality are effectively solved.

[0004] The present invention is realized by the following technical scheme: a low-cost and high-efficiency rock crushing method suitable for tunnel mining, characterized in that it includes two parts: tunnel layout and crusher installation method,

[0005] The tunnel layout plan includes 3 maintenance and installation tunnels, 2 main chutes, several sub-chutes, several stage transportation tunnels, several vibration generators and several piezoelectric ceramic sheets. The sub-chutes are connected to the main chutes, the vibration generators are installed in the main chutes, and the piezoelectric ceramic sheets are installed on the inner walls of the main chutes and sub-chutes. The main chutes and sub-chutes are arranged in an inclined multi-angle staggered manner. A silo is designed at the bottom of the main chutes to store materials. A circle of vibration generators is installed in the silo. A crusher is provided at the bottom of the silo; the crusher includes a crossbeam assembly, a moving cone assembly, a lower frame assembly, an eccentric assembly, a hydraulic cylinder assembly, a wear-resistant liner, a manually excavated crusher cavity wall and a drive assembly;

[0006] Rocks at each stage are transported to their respective sub-chutes through their respective stage transport tunnels. Rocks enter the main chute through the sub-chutes. During the sliding process of rocks, they will hit the vibration generator installed in the main chute on the one hand, and squeeze the piezoelectric ceramic sheets installed on the inner walls of each chute on the other hand. The electric energy generated in the above process enters the battery through the collection system, and is used as part of the working electric energy of the subsequent gyratory crusher. The chutes are arranged in an inclined multi-angle staggered manner, which effectively enhances the collision during the sliding process of rocks, and uses part of the accumulated water in the transport tunnels at each stage as the source of water for the dust removal system.

[0007] The three maintenance and installation roadways described above include Maintenance and Installation Roadway I, Maintenance and Installation Roadway II, and Maintenance and Installation Roadway III. The two main ore passes include Main Ore Pass I and Main Ore Pass II. The several sub-ore passes include Sub-ore Pass I, Sub-ore Pass II, Sub-ore Pass III, Sub-ore Pass IV, Sub-ore Pass V, and Sub-ore Pass VI. The several stage haulage roadways include Stage Haulage Roadway I, Stage Haulage Roadway II, Stage Haulage Roadway III, Stage Haulage Roadway IV, Stage Haulage Roadway V, and Stage Haulage Roadway VI. The several vibration generators include ore pass vibration generators and bunker vibration generators. The ore pass vibration generators are installed on Main Ore Pass I and Main Ore Pass II, and the bunker vibration generators are installed in the bunker.

[0008] The installation method of the described crusher includes:

[0009] First, blast to generate the space for the crossbeam assembly from Maintenance and Installation Roadway I. Secondly, blast downward to generate the bottom hole of the crushing chamber. Then, blast to generate the installation space for the lower frame assembly from Maintenance and Installation Roadway II. Then, use smooth blasting technology to generate the contour of the installation space;

[0010] After the above procedures are completed, use grouting technology to repair the cracks in the rock mass, and drive high-strength anchor bolts. After driving the anchor bolts, pour high-strength concrete on the surface. During the process of pouring concrete, it is necessary to ensure the flatness and parallelism of Plane I and Plane II. Thus, the excavation of the crusher installation space is completed;

[0011] Finally, install the crossbeam assembly to Plane I through Maintenance and Installation Roadway I, and install the wear-resistant lining to the wall of the crusher cavity manually excavated;

[0012] Install the eccentric assembly to the crossbeam assembly through Maintenance and Installation Roadway III; install the lower frame assembly to Plane II through Maintenance and Installation Roadway II. Finally, install other components to their corresponding positions. Thus, the installation of the gyratory crusher is completed.

[0013] The beneficial effects of the present invention are: By the roadway layout plan and the method of excavating the crusher cavity in the rock mass, problems such as high procurement cost of the crusher, serious pollution, high energy consumption, and unstable crushing quality are effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 is the roadway layout diagram of the present invention;

[0016] Figure 2 is the crusher layout diagram of the present invention;

[0017] Figure 3 is the principle flow chart of the present invention.

[0018] In the figure: 1. Crossbeam assembly; 2. Moving cone assembly; 3. Lower frame assembly; 4. Eccentric assembly; 5. Hydraulic cylinder assembly; 6. Wear-resistant lining; 7. Manually excavated crusher cavity wall; 8. Driving assembly; 9. Maintenance and installation roadway I; 10. Maintenance and installation roadway II; 11. Maintenance and installation roadway III; 12. Main chute I; 13. Main chute II; 14. Sub-chute I; 15. Sub-chute II; 16. Sub-chute III; 17. Sub-chute IV; 18. Sub-chute V; 19. Sub-chute VI; 20. Stage transportation roadway I; 21. Stage transportation roadway II; 22. Stage transportation roadway III; 23. Stage transportation roadway IV; 24. Stage transportation roadway V; 25. Stage transportation roadway VI; 26. Chute vibration generator; 27. Bunker vibration generator; 28. Bunker; 29. Plane I; 30. Plane II. Specific implementation mode

[0019] As Figures 1 to 3 shown, a low-cost and high-efficiency rock crushing method suitable for roadway mining is characterized in that: it includes two parts, namely, roadway layout and the installation method of the crusher.

[0020] The roadway layout plan includes 3 maintenance and installation roadways, 2 main chutes, several sub-chutes, several stage transportation roadways, several vibration generators and several piezoelectric ceramic sheets. The sub-chutes are connected to the main chutes. The vibration generators are installed in the main chutes. The piezoelectric ceramic sheets are installed on the inner walls of the main chutes and sub-chutes. The main chutes and sub-chutes are arranged in an inclined and multi-angle staggered form. A bunker 28 is designed at the bottom of the main chute. The bunker stores materials. A circle of vibration generators is installed inside the bunker 28. A crusher is provided at the bottom of the bunker 28. The crusher includes a crossbeam assembly 1, a moving cone assembly 2, a lower frame assembly 3, an eccentric assembly 4, a hydraulic cylinder assembly 5, a wear-resistant lining 6, a manually excavated crusher cavity wall 7 and a driving assembly 8.

[0021] The rocks in each stage are transported to their respective sub-chutes through their respective stage transportation roadways. The rocks enter the main chute through the sub-chutes. During the sliding process of the rocks, on the one hand, they will hit the vibration generators installed in the main chute, and on the other hand, they will also squeeze the piezoelectric ceramic sheets installed on the inner walls of each chute. The electric energy generated in the above process enters the storage battery through the acquisition system and is used as part of the working electric energy of the subsequent gyratory crusher, which can effectively reduce the energy consumption of the crusher. The chutes are arranged in an inclined and multi-angle staggered form, effectively strengthening the collision during the sliding process of the rocks and playing a certain role in crushing. A part of the accumulated water in each stage transportation roadway is used as the water source for the dust removal system.

[0022] The three maintenance and installation roadways include maintenance and installation roadway I9, maintenance and installation roadway II10, and maintenance and installation roadway III11. The two main ore passes include main ore pass I12 and main ore pass II13. The several sub-ore passes include sub-ore pass I14, sub-ore pass II15, sub-ore pass III16, sub-ore pass IV17, sub-ore pass V18, and sub-ore pass VI19. The several stage haulage roadways include stage haulage roadway I20, stage haulage roadway II21, stage haulage roadway III22, stage haulage roadway IV23, stage haulage roadway V24, and stage haulage roadway VI25. The several vibration generators include ore pass vibration generator 26 and bunker vibration generator 27. The ore pass vibration generator 26 is installed on the main ore pass I12 and the main ore pass II13. The bunker vibration generator 27 is installed in the bunker 28.

[0023] The installation method of the described crusher includes:

[0024] First, blast to generate the space for the crossbeam assembly 1 from the maintenance and installation roadway I9. Secondly, blast downward to generate the bottom hole of the crushing chamber. Then, blast to generate the installation space for the lower frame assembly 3 from the maintenance and installation roadway II10. Then, use smooth blasting technology to generate the contour of the installation space;

[0025] After the above procedures are completed, use grouting technology to repair the cracks in the rock mass and drive high-strength anchor bolts. After driving the anchor bolts, pour high-strength concrete on the surface. During the process of pouring concrete, it is necessary to ensure the flatness and parallelism of plane I29 and plane II30. Thus, the excavation of the crusher installation space is completed;

[0026] Finally, install the crossbeam assembly 1 to plane I29 through the maintenance and installation roadway I9, and install the wear-resistant lining 6 to the wall 7 of the crusher cavity manually excavated;

[0027] Install the eccentric assembly 4 to the crossbeam assembly 1 through the maintenance and installation roadway III11; install the lower frame assembly 3 to plane II30 through the maintenance and installation roadway II10. Finally, install other components to their corresponding positions. Thus, the installation of the gyratory crusher is completed.

Claims

1. A low-cost and high-efficiency rock crushing method applicable to roadway mining, characterized in that: It includes two parts: tunnel layout and crusher installation method. The tunnel layout plan includes 3 maintenance and installation tunnels, 2 main chutes, a number of sub-chutes, a number of stage transportation tunnels, a number of vibration generators and a number of piezoelectric ceramic sheets. The sub-chutes are connected to the main chutes, the vibration generators are installed in the main chutes, and the piezoelectric ceramic sheets are installed on the inner walls of the main chutes and the sub-chutes. The main chutes and the sub-chutes are arranged in an inclined multi-angle staggered manner. A silo (28) is designed at the bottom of the main chutes. The silo (28) stores materials. A circle of vibration generators is installed in the silo (28). A crusher is arranged at the bottom of the silo (28); the crusher includes a crossbeam assembly (1), a moving cone assembly (2), a lower frame assembly (3), an eccentric assembly (4), a hydraulic cylinder assembly (5), a wear-resistant liner (6), an artificially excavated crusher cavity wall (7) and a drive assembly (8); Rocks at each stage are transported to their respective sub-chutes through their respective stage transport tunnels. Rocks enter the main chute through the sub-chutes. During the sliding process of rocks, they will hit the vibration generator installed in the main chute on the one hand, and squeeze the piezoelectric ceramic sheets installed on the inner walls of each chute on the other hand. The electric energy generated in the above process enters the battery through the collection system, and is used as part of the working electric energy of the subsequent gyratory crusher. The chutes are arranged in an inclined multi-angle staggered manner, which effectively enhances the collision during the sliding process of rocks, and uses part of the accumulated water in the transport tunnels at each stage as the source of water for the dust removal system.

2. The low-cost and high-efficiency rock crushing method applicable to roadway mining according to claim 1, wherein: The three maintenance and installation tunnels include maintenance and installation tunnel I (9), maintenance and installation tunnel II (10) and maintenance and installation tunnel III (11), the two main chutes include main chutes I (12) and main chutes II (13), the plurality of sub-chutes include sub-chutes I (14), sub-chutes II (15), sub-chutes III (16), sub-chutes IV (17), sub-chutes V (18) and sub-chutes VI (19), the plurality of stage transport tunnels include stage transport tunnel I ( 20), stage transport lane II (21), stage transport lane III (22), stage transport lane IV (23), stage transport lane V (24) and stage transport lane VI (25), a plurality of vibration generators including a chute vibration generator (26) and a silo vibration generator (27), the chute vibration generator (26) being installed on the main chute I (12) and the main chute II (13), and the silo vibration generator (27) being installed in the silo (28).

3. A low-cost and high-efficiency rock crushing method applicable to roadway mining according to claim 1, characterized in that, The installation method of the crusher comprises: First, the space for the crossbeam assembly (1) is generated by blasting from the maintenance and installation tunnel I (9), and then the bottom hole of the crushing chamber is generated by blasting downwards. Then, the installation space for the lower frame assembly (3) is generated by blasting from the maintenance and installation tunnel II (10), and then the outline of the installation space is generated by using the smooth surface blasting technology; After the above process is completed, the cracks in the rock mass are repaired by grouting technology, and high-strength anchor bolts are driven. After the anchor bolts are driven, high-strength concrete is poured on the surface. During the pouring of concrete, the flatness and parallelism of plane I (29) and plane II (30) must be ensured. At this point, the crusher installation space is excavated; Finally, the crossbeam assembly (1) is installed onto Plane I (29) through the maintenance and installation roadway I (9), and the wear-resistant lining plate (6) is installed onto the manually excavated crusher cavity wall (7). The eccentric assembly (4) is installed onto the crossbeam assembly (1) through the maintenance and installation roadway III (11); the lower frame assembly (3) is installed onto Plane II (30) through the maintenance and installation roadway II (10). Finally, other components are installed in their corresponding positions, and thus the installation of the gyratory crusher is completed.

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