Underground stope dust fall system and construction method thereof

Abstract

The invention discloses an underground stope dust fall system and a construction method thereof, and belongs to the technical field of underground mining. The system comprises a security pillar, a water injection nozzle device and a water injection pipe. A water injection inclined hole is formed in the security pillar, the water injection nozzle device is installed at one end of a water injection pipe, the water injection pipe extends towards the water injection inclined hole and is laid in the water injection inclined hole, and the other end is connected with a water sump through a stope water pipe. The method comprises the following steps: step 100, digging a water injection inclined hole in a security pillar; step 200, mounting a water injection nozzle device on a water injection pipe, and feeding the water injection pipe into the water injection inclined hole from the lower part of the constructed water injection inclined hole; and 300, after one end of the water injection pipe is connected with a spray head control device, the spray head control device is fixed to the side wall of the ore removal combined roadway beside the trench. The limitation of underground space can be broken through, water spraying and dust falling are not limited by the length of a roadway, the water conveying distance is shortened, the water pipe laying cost is reduced, and hydraulic conveying energy consumption is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of underground mining, and more specifically, relates to an underground mining field dust reduction system and a construction method thereof. Background Art

[0002] In the process of green mining in underground mines, with the continuous expansion of mine scale, the advancement of mechanization, digitization and intelligence, the demand for dust suppression technology is increasing. As an important means of environmental protection, dust suppression technology has gradually replaced traditional manual spraying and simple physical dust prevention measures, providing a more efficient and environmentally friendly solution for underground production.

[0003] At present, the dust suppression system in underground mining sites mainly adopts a point-type dust suppression scheme. This scheme radiates dust control from the underground working surface outward by arranging spray devices and dust suppression equipment, forming a dust suppression network centered on the working surface. The spray system uses a high-pressure spray device to spray water mist to the source of dust, effectively suppressing the spread of dust.

[0004] To protect the health and safety of workers, the dust suppression system needs to ensure that the dust concentration is controlled within the safety standard. However, due to the limitation of underground space, the layout of dust suppression equipment and the effective coverage of spray are often affected, resulting in unsatisfactory dust control effect, which in turn increases the risk of occupational diseases and also affects the work efficiency. Summary of the invention

[0005] 1. Problems to be solved

[0006] In view of the problem in the prior art that the dust reduction system in underground mines has an unsatisfactory working effect during mining operations, the present invention provides an underground mine dust reduction system and a construction method thereof, which can break through the limitations of underground space, and the water sprinkling dust reduction is not restricted by the length of the tunnel, thereby reducing the water transmission distance, reducing the cost of laying water pipes, and saving energy consumption in hydraulic transmission.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A dust reduction system for an underground mine field comprises a safety pillar, a water injection nozzle device and a water injection pipe; the safety pillar is provided with an inclined water injection hole extending in an inclined direction, the water injection nozzle device is installed at one end of the water injection pipe, one end of the water injection pipe equipped with the water injection nozzle device extends toward the inclined water injection hole and is laid in the inclined water injection hole, and the other end is connected to a water tank through a mine water pipe to spray water into the goaf.

[0010] As a further improvement of the technical solution, it also includes a nozzle control device; the nozzle control device is arranged at the side wall of the mining tunnel beside the trench and is connected to the end of the water injection pipe that is not equipped with the water injection nozzle device.

[0011] As a further improvement of the technical solution, the water injection nozzle device includes a nozzle and a connecting bracket, the nozzle is connected to the end of the water injection pipe, one end of the connecting bracket is fixedly connected to the water injection pipe, and the other end is fixedly connected to the nozzle.

[0012] As a further improvement of the technical solution, the nozzle control device includes a valve, and the valve is installed on the part of the water injection pipe exposed to the inclined water injection hole.

[0013] As a further improvement of the technical solution, the nozzle control device includes a valve, and the valve is installed on the mining field water pipe.

[0014] As a further improvement of the technical solution, a plurality of inclined water injection holes are opened in the safety pillar, and only one water injection pipe is laid in each inclined water injection hole.

[0015] As a further improvement of the technical solution, the water injection pipe is a rubber water pipe.

[0016] A construction method of the above-mentioned underground mining field dust reduction system comprises the following steps:

[0017] Step 100, drilling water injection inclined holes in the security pillar, with each water injection pipe corresponding to one water injection inclined hole;

[0018] Step 200, install the water injection nozzle device on the water injection pipe, slowly send it into the water injection inclined hole from the bottom of the constructed water injection inclined hole, and fix the water injection pipe and the water injection nozzle device after reaching the designated position;

[0019] Step 300, after one end of the water injection pipe is connected to the nozzle control device, the nozzle control device is fixed on the side wall of the mine tunnel beside the trench.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention discloses an underground mining field dust reduction system and a construction method thereof. The method of drilling a water injection inclined hole in a safety pillar is adopted to break through the limitation of underground space. The water sprinkling and dust reduction is not restricted by the length of the tunnel, which reduces the water delivery distance, reduces the cost of laying water pipes, and saves the energy consumption of hydraulic transmission. The use of the nozzle control device avoids the safety problem of not being able to effectively control the water flow switch and size during the dust reduction process. The water injection nozzle device and the water injection pipe are in the safety pillar, which can also avoid damage to the water pipe caused by blasting operations, vehicle passage, rock fall, etc., and ensure the safe and reliable operation of the dust reduction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] In the figure: 1. Goaf; 2. Trench; 3. Water injection inclined hole; 4. Nozzle control device; 5. Water injection nozzle device; 6. Water injection pipe; 7. Mining field water pipe; 8. Water tank. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best mode for performing the present invention, and is sufficient to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0026] Example 1

[0027] An underground mining site dust reduction system is used in mining production to spray and reduce dust in underground workplaces. The specific structure and technical effects are described in detail below.

[0028] like Figure 1 As shown, the dust suppression system includes a safety pillar, a water injection nozzle device 5 and a water injection pipe 6; the safety pillar has an inclined water injection hole 3 extending in an inclined direction, the water injection nozzle device 5 is installed at one end of the water injection pipe 6, and the end of the water injection pipe 6 equipped with the water injection nozzle device 5 extends to the inclined water injection hole 3 and is laid in the inclined water injection hole 3, and the other end is connected to the water tank 8 through the mining field water pipe 7 to spray water to the goaf 1.

[0029] Specifically, the water injection nozzle device 5 includes a nozzle and a connecting bracket. The nozzle is connected to the end of the water injection pipe 6. One end of the connecting bracket is fixedly connected to the water injection pipe 6, and the other end is fixedly connected to the nozzle to ensure the installation strength of the nozzle on the water injection pipe 6.

[0030] In addition, the dust suppression system also includes a nozzle control device 4, which is arranged at the side wall of the mine tunnel beside the trench 2 and connected to the end of the water injection pipe 6 that is not equipped with the water injection nozzle device 5. Specifically, the nozzle control device 4 includes a valve, which is installed on the part of the water injection pipe 6 exposed to the water injection inclined hole 3 or installed on the mining field water pipe 7.

[0031] In this embodiment, the water injection pipe 6 is a rubber water pipe, and a plurality of inclined water injection holes 3 are opened in the safety mine pillar, and only one water injection pipe 6 is laid in each inclined water injection hole 3 .

[0032] The construction process includes the following steps:

[0033] Step 100, drilling a water injection inclined hole 3 in the safety pillar, each water injection pipe 6 correspondingly drills a water injection inclined hole 3;

[0034] Step 200, install the water injection nozzle device 5 on the water injection pipe 6, slowly send it into the water injection inclined hole 3 from the bottom of the constructed water injection inclined hole 3, and fix the water injection pipe 6 and the water injection nozzle device 5 after reaching the designated position;

[0035] Step 300, after one end of the water injection pipe 6 is connected to the nozzle control device 4, the nozzle control device 4 is fixed to the side wall of the mine tunnel beside the trench 2.

[0036] The present embodiment provides an underground mine dust reduction system and construction method thereof, which adopts the method of drilling water injection inclined holes in the safety pillars, breaking through the limitation of underground space, and the water sprinkling dust reduction is not restricted by the length of the tunnel, which reduces the water delivery distance, reduces the cost of laying water pipes, and saves the energy consumption of hydraulic transmission. The use of the nozzle control device avoids the safety problem of not being able to effectively control the water flow switch and size during the dust reduction process. The water injection nozzle device and the water injection pipe are in the safety pillars, which can also avoid damage to the water pipes caused by blasting operations, vehicle passage, rock fall, etc., and ensure the safe and reliable operation of the dust reduction system.

[0037] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. An underground mining dust suppression system, characterized by: The invention comprises a safety pillar, a water injection nozzle device (5) and a water injection pipe (6); the safety pillar is provided with a water injection inclined hole (3) extending in an inclined direction; the water injection nozzle device (5) is installed at one end of the water injection pipe (6); one end of the water injection pipe (6) equipped with the water injection nozzle device (5) extends toward the water injection inclined hole (3) and is laid in the water injection inclined hole (3); the other end of the water injection pipe (6) is connected to a water tank (8) through a mining field water pipe (7) to spray water to the goaf (1).

2. The underground mining dust suppression system according to claim 1, characterized in that: It also includes a nozzle control device (4); the nozzle control device (4) is arranged at the side wall of the mine tunnel beside the trench (2) and is connected to the end of the water injection pipe (6) that is not equipped with the water injection nozzle device (5).

3. The underground mining dust suppression system according to claim 2, characterized in that: The water injection nozzle device (5) comprises a nozzle and a connecting bracket, wherein the nozzle is connected to the end of a water injection pipe (6), and one end of the connecting bracket is fixedly connected to the water injection pipe (6), and the other end is fixedly connected to the nozzle.

4. The underground mining dust suppression system according to claim 2, characterized in that: The nozzle control device (4) comprises a valve, and the valve is installed on the portion of the water injection pipe (6) exposed outside the water injection inclined hole (3).

5. The underground mining dust suppression system according to claim 2, characterized in that: The nozzle control device (4) comprises a valve, and the valve is installed on the mining field water pipe (7).

6. An underground mining dust suppression system according to any one of claims 1 to 5, characterized in that: A plurality of inclined water injection holes (3) are provided in the safety mine pillar, and only one water injection pipe (6) is laid in each inclined water injection hole (3).

7. An underground mining dust suppression system according to any one of claims 1 to 5, characterized in that: The water injection pipe (6) is a rubber water pipe.

8. A construction method for an underground mine dust suppression system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 100, drilling a water injection inclined hole (3) in the safety mine pillar, and drilling one water injection inclined hole (3) corresponding to each water injection pipe (6); Step 200, install the water injection nozzle device (5) on the water injection pipe (6), slowly send it into the water injection inclined hole (3) from the bottom of the constructed water injection inclined hole (3), and fix the water injection pipe (6) and the water injection nozzle device (5) after reaching the designated position; Step 300, after one end of the water injection pipe (6) is connected to the nozzle control device (4), the nozzle control device (4) is fixed to the side wall of the mine tunnel beside the trench (2).

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