Mine open pit greening irrigation system and control method thereof

Abstract

The invention discloses a mine open pit greening irrigation system and a control method thereof.The system comprises an underground mine water sump, an open pit pool, a reservoir, a treatment pool and an irrigation system, and the underground mine water sump and the open pit pool are connected with the reservoir through pipelines; and the reservoir is respectively connected with the treatment water tank and the irrigation system through pipelines. The system can be automatically controlled, and manpower and material resources are saved; the water quantity and temperature requirements are preset in advance according to the vegetation types, the irrigation system can irrigate in time, and the greening effect is better; mine water is recycled, so that water resources can be greatly saved; redundant sewage can be introduced into a treatment plant to be treated, so that the sewage can be recycled in other fields, and the sewage treatment cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of irrigation, and in particular relates to an open pit reforestation irrigation system for a mine and a control method thereof. Background Art

[0002] In the mining industry, after the end of open-pit mining, many of the remaining open-pit slopes are easily washed and weathered by rainwater for a long time, which can easily cause serious accidents such as landslides and collapses, endangering underground production safety. Therefore, many mines will regreen the open-pits after the end of open-pit mining. However, since the rock conditions of most open-pits are not easy to retain moisture and vegetation is difficult to grow, domestic mines currently need to invest a lot of manpower and material resources in the work of regreening open pits. However, the regreening effect is not obvious and it is difficult to achieve the expected goal. Therefore, there is a need for a watering system that can save manpower and material resources, reduce regreening costs, and have better regreening effects.

[0003] The patent document with announcement number CN112400542A discloses an economical and green mine restoration and management system. In this management method: Step 1, the water level meter in the high-level water tank detects data and transmits it to the DCS control system, and controls the pump to transport the water in the collection pool to the high-level water tank; Step 2, when the humidity sensor data on the slope is transmitted to the DCS control system, the electric valves on the water collection pool pipe and the high-level water tank pipe are controlled to open or close, and the vegetation on the slope is irrigated. The humidity sensor and the water level meter input information to the DCS control system, and the DCS control system accurately controls the vegetation on the slope to obtain irrigation water, so that the vegetation planted on the slope obtains sufficient water. In this system, domestic sewage is treated and used for irrigation, but the treatment of domestic sewage to water quality that can be used for irrigation is different from the treatment of groundwater in mines. Domestic sewage requires certain economic treatment costs and equipment requirements, which increases the cost of system maintenance. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a mine open pit reforestation irrigation system and a control method thereof.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a mine open pit greening irrigation system, which includes an underground mine water tank, an open pit mine water pool, a water storage tank, a treatment water pool and an irrigation device. The underground mine water tank and the open pit mine water pool are respectively connected to the water storage tank through pipelines, and the water storage tank is respectively connected to the treatment water pool and the irrigation device through pipelines.

[0007] Preferably, a water pump A is arranged on the pipeline connecting the underground mine water tank and the water reservoir, and a liquid level switch is arranged in the underground mine water tank; a water pump B is arranged on the pipeline connecting the open-pit mine pit water tank and the water reservoir, and a liquid level switch is arranged in the open-pit mine pit water tank.

[0008] Preferably, an input pipe is provided on the water reservoir, a liquid level switch is provided in the water reservoir, and a water pump C is provided on the input pipe.

[0009] Preferably, a water outlet A and a water outlet B are provided on the water reservoir, the water outlet A is connected to the treatment water tank through a pipeline, and the water outlet B is connected to the irrigation device through a pipeline.

[0010] Preferably, the water outlet height of the water outlet A is greater than the water outlet height of the water outlet B.

[0011] Preferably, the irrigation device comprises a sprinkler, a controller and a sensor assembly, the sprinkler is connected to the water reservoir via a pipeline, and the controller is electrically connected to the sensor assembly.

[0012] Preferably, an electric valve is provided on the pipeline connecting the nozzle and the water reservoir, and the electric valve is electrically connected to the controller.

[0013] Preferably, the sensor assembly includes a temperature sensor and a humidity sensor.

[0014] Preferably, the controller is a PCL controller.

[0015] A control method for a mine open pit greening irrigation system comprises the following steps:

[0016] S1: When the water level in the underground mine water tank is not lower than the preset value a, pump A starts to pump water from the underground mine water tank to the reservoir. When the water level is not higher than the preset value a', pump A stops working. The liquid level of a is higher than the liquid level of a'.

[0017] S2: When the water level of the open-pit mine water tank is not lower than the preset value b, pump B starts to pump water from the underground mine water tank to the water storage tank. When the water level is not higher than the preset value b', pump B stops working. The liquid level of b is higher than the liquid level of b'.

[0018] S3: When the liquid level in the water reservoir is not lower than the preset value c, the water pump C stops pumping water into the water reservoir. When the liquid level is not higher than the preset value c', the water pump C starts.

[0019] S4: Make the water level of the water reservoir higher than the outlet B, and water flows into the irrigation device by gravity. When the sensor component detects that the soil moisture is lower than the preset value, the controller controls the electric valve to open, so that the sprinkler sprays water until the soil moisture reaches the preset value.

[0020] The beneficial effects of the present invention are:

[0021] The system of the present invention can be automatically controlled to save manpower and material resources; the water volume and temperature requirements are preset in advance according to the vegetation type, and the irrigation device can irrigate in time, so as to achieve a better regreening effect; the recycling of mine water can greatly save water resources; the excess sewage can be connected to the treatment plant for treatment so that it can be recycled in other fields, reducing the cost of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is the control logic diagram of the water pump A of the present invention;

[0024] Figure 3 It is the control logic diagram of the water pump B of the present invention;

[0025] Figure 4 It is the control logic diagram of the water pump C of the present invention;

[0026] Figure 5 is a control logic diagram of the controller of the present invention;

[0027] In the figure: 1-underground mine water tank, 11-water pump A, 2-open-pit mine pit water tank, 21-water pump B, 3-water reservoir, 31-input pipe, 32-water pump C, 33-water outlet A, 34-water outlet B, 4-treatment water tank, 5-irrigation device, 51-sprinkler, 52-controller, 53-sensor assembly, 54-electric valve. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0029] Example:

[0030] like Figures 1 to 5 As shown, a mine open pit greening irrigation system includes an underground mine water tank 1, an open pit water pool 2, a water reservoir 3, a treatment water pool 4 and an irrigation device 5. The underground mine water tank 1 and the open pit water pool 2 are respectively connected to the water reservoir 3 through pipelines, and the water reservoir 3 is respectively connected to the treatment water pool 4 and the irrigation device 5 through pipelines. The treatment water pool 4 is a water reservoir of a water treatment plant, and its maximum treatment speed is greater than the maximum drainage speed of the water outlet A33 to prevent water level overflow. The underground mine water tank 1 can collect groundwater, and the open pit water pool 2 can collect rainwater.

[0031] A water pump A11 is arranged on the pipeline connecting the underground mine water tank 1 and the water reservoir 3, a double float liquid level switch is arranged in the underground mine water tank 1, and the double float liquid level switch is electrically connected to the water pump A11; a water pump B21 is arranged on the pipeline connecting the open-pit mine pit water tank 2 and the water reservoir 3, a double float liquid level switch is arranged in the open-pit mine pit water tank 2, and the double float liquid level switch is electrically connected to the water pump B21.

[0032] An input pipe 31 is provided on the water reservoir 3, a double float liquid level switch is provided in the water reservoir 3, a water pump C32 is provided on the input pipe 31, and the double float liquid level switch is electrically connected to the water pump C32. The input pipe 31 is used to connect to an external water source so that irrigation can be maintained when the water in the underground mine water tank 1 and the open-pit mine pit water tank 2 is insufficient.

[0033] The water reservoir 3 is provided with a water outlet A33 and a water outlet B34. The water outlet A33 is connected to the treatment water pool 4 through a pipeline, and the water outlet B34 is connected to the irrigation device 5 through a pipeline.

[0034] The water outlet height of the water outlet A33 is greater than the water outlet height of the water outlet B34. The maximum drainage speed of the water outlet A33 is greater than the sum of the drainage speeds of the water pump A11 and the water pump B21, so as to prevent the water reservoir 3 from overflowing. The water reservoir 3 is set at a height greater than the height of the irrigation device 5, and the water from the water outlet B34 flows into the irrigation device 5 by gravity.

[0035] The irrigation device 5 includes a nozzle 51, a controller 52 and a sensor assembly 53. The nozzle 51 is connected to the water reservoir 3 through a pipeline, and the controller 52 and the sensor assembly 53 are electrically connected.

[0036] An electric valve 54 is provided on the pipeline connecting the nozzle 51 and the water reservoir 3 , and the electric valve 54 is electrically connected to the controller 52 .

[0037] The sensor assembly 53 includes a temperature sensor and a humidity sensor.

[0038] The controller 52 is a PCL controller, which sets appropriate watering temperature and humidity through programming according to the type of vegetation planted in each unit area, and feeds back detection data to the controller 52 through the sensor component 53 for automatic control. The controller 52 receives data from the temperature sensor and the humidity sensor every five minutes.

[0039] The open pit is divided into 1, 2, 3, ... n unit areas according to the terrain conditions, and the same reclaimed vegetation is planted in a single unit area. Each unit area is equipped with a watering device 5. According to the size of the unit area, each unit area is equipped with a plurality of watering nozzles 51. The watering device 5 can be remotely controlled.

[0040] A control method for a mine open pit greening irrigation system comprises the following steps:

[0041] S1: When the water level in the underground mine water tank 1 is not lower than the preset value a, the water pump A11 starts to pump the water in the underground mine water tank 1 to the water reservoir 3. When the water level is not higher than the preset value a', the water pump A11 stops working. The liquid level of a is higher than the liquid level of a'.

[0042] S2: When the water level of the open-pit mine water tank 2 is not lower than the preset value b, the water pump B21 starts to pump water from the underground mine water tank 1 to the water reservoir 3. When the water level is not higher than the preset value b', the water pump B21 stops working. The liquid level of b is higher than the liquid level of b'.

[0043] S3: When the liquid level in the water reservoir 3 is not lower than the preset value c, the water pump C32 stops pumping water into the water reservoir 3. When the liquid level is not higher than the preset value c', the water pump C32 starts, and the liquid level at the water outlet A33 is higher than the liquid level at c, the liquid level at c is higher than the liquid level at c', and the liquid level at c' is higher than the water outlet B34.

[0044] S4: Make the water level of the water reservoir 3 higher than the water outlet B34, and water flows into the irrigation device 5 by gravity. When the sensor component 53 detects that the soil moisture is lower than the preset value, the controller 52 controls the electric valve 54 to open, so that the sprinkler 51 sprays water until the soil moisture reaches the preset value.

[0045] From June to September 2024, the open-pit mine regreening irrigation system and control method of the embodiment of the present application was used in the Lannigou Gold Mine in Guizhou Province, and different plants were transplanted for regreening. The growth area of ​​a main plant variety was divided into a unit area. The area of ​​a single unit area was 2 mu. Before regreening, the vegetation coverage area of ​​a single unit area was less than 5%. The temperature and humidity were monitored in different areas and the corresponding nozzles were controlled, as shown in the following table.

[0046]

[0047] As can be seen from the above table, the temperature and humidity ranges can be preset in advance according to the growth characteristics of the plants, and then the humidity and temperature of the corresponding area can be adjusted by spraying water through the switch nozzle 51 to ensure that the plants are in a better environment, improve the growth rate of the plants, maintain a high survival rate of the plants, and significantly increase the proportion of vegetation coverage area in the unit area.

Claims

1. A mine open pit greening irrigation system, characterized by: The invention comprises an underground mine water tank (1), an open-pit mine pit water pool (2), a water storage tank (3), a treatment water pool (4) and an irrigation device (5); the underground mine water tank (1) and the open-pit mine pit water pool (2) are respectively connected to the water storage tank (3) through pipelines, and the water storage tank (3) is respectively connected to the treatment water pool (4) and the irrigation device (5) through pipelines.

2. A mine open pit reforestation irrigation system as claimed in claim 1, characterized in that: A water pump A (11) is arranged on the pipeline connecting the underground mine water tank (1) and the water reservoir (3), and a liquid level switch is arranged in the underground mine water tank (1); a water pump B (21) is arranged on the pipeline connecting the open-pit mine pit water tank (2) and the water reservoir (3), and a liquid level switch is arranged in the open-pit mine pit water tank (2).

3. A mine open pit reforestation irrigation system as claimed in claim 1, characterized in that: An input pipe (31) is arranged on the water reservoir (3), a liquid level switch is arranged inside the water reservoir (3), and a water pump C (32) is arranged on the input pipe (31).

4. A mine open pit reforestation irrigation system as claimed in claim 1, characterized in that: The water reservoir (3) is provided with a water outlet A (33) and a water outlet B (34); the water outlet A (33) is connected to the treatment water pool (4) through a pipeline, and the water outlet B (34) is connected to the irrigation device (5) through a pipeline.

5. A mine open pit reforestation irrigation system as claimed in claim 4, characterized in that: The water outlet height of the water outlet A (33) is greater than the water outlet height of the water outlet B (34).

6. A mine open pit reforestation irrigation system as claimed in claim 1, characterized in that: The irrigation device (5) comprises a nozzle (51), a controller (52) and a sensor assembly (53); the nozzle (51) is connected to the water reservoir (3) via a pipeline, and the controller (52) and the sensor assembly (53) are electrically connected.

7. A mine open pit reforestation irrigation system as claimed in claim 6, characterized in that: An electric valve (54) is provided on the pipeline connecting the nozzle (51) and the water reservoir (3), and the electric valve (54) is electrically connected to the controller (52).

8. A mine open pit reforestation irrigation system as claimed in claim 6, characterized in that: The sensor assembly (53) includes a temperature sensor and a humidity sensor.

9. A mine open pit reforestation irrigation system as claimed in claim 6, characterized in that: The controller (52) is a PCL controller.

10. A control method for a mine open pit greening irrigation system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: When the water level in the underground mine water tank (1) is not lower than the preset value a, the water pump A (11) starts to pump the water in the underground mine water tank (1) to the water reservoir (3). When the water level is not higher than the preset value a', the water pump A (11) stops working, and the liquid level of a is higher than the liquid level of a'; S2: When the water level in the open pit water tank (2) is not lower than the preset value b, the water pump B (21) starts to pump water from the underground mine water tank (1) to the water reservoir (3). When the water level is not higher than the preset value b', the water pump B (21) stops working, and the liquid level of b is higher than the liquid level of b'. S3: When the liquid level of the water reservoir (3) is not lower than the preset value c, the water pump C (32) stops pumping water into the water reservoir (3); when the liquid level is not higher than the preset value c', the water pump C (32) starts; S4: The water level of the water reservoir (3) is made higher than the water outlet B (34), and water flows into the irrigation device (5) by gravity. When the sensor component (53) detects that the soil moisture is lower than a preset value, the controller (52) controls the electric valve (54) to open, so that the sprinkler (51) sprays water until the soil moisture reaches the preset value.

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