Relay drainage system for strip mine
By using drainage systems of steel structure water tanks and partitions in open-pit mines, the problems of slope height difference and poor geological conditions are solved, faster and more economical drainage solutions are achieved, and the system flexibility is improved. Drainage efficiency.
Patent Information
- Application Number
- CN202421067102.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the case of large slope height difference and poor geological conditions, the existing open-pit mine drainage system has the risk of difficult construction, long construction cycle, high cost and pressing of mines. The traditional reservoir is not easy to reuse and cannot effectively deal with heavy rains. The issue of water pump grabbing during the period.
Use steel structure or high-strength material to replace traditional reservoirs, set up partition steel plates for precipitation, connect the water tanks through connecting pipes, ensure the continuous water absorption of water pumps, and set up monitoring water level sensors and maintenance personnel on the water tanks Holes are for cleaning sludge, and the canister can be detached and moved.
It reduces the construction cycle and cost of fixed pump stations, reduces the risk of ore loss, and the water tank can be reused, ensuring smooth drainage during normal and heavy rainstorms, extending the service life of the water pump, and reducing construction complexity.
Smart Images
Figure CN222350771U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of open-pit mine drainage, in particular to a sunken open-pit mine relay drainage system, belongs to the technical field of open-pit mining, and is particularly suitable for large deep concave open-pits with broken geological forms. Background Art
[0002] As open-pit mining progresses, open-pit depressions will be formed, which creates a height difference between the mining area and the ground. Atmospheric precipitation, surface runoff and groundwater gather in the mining pits. A large amount of collected water causes difficulties in mining and operational safety. Therefore, during open-pit mining and even during infrastructure construction, effective measures need to be taken to drain the collected water out of the pits in a timely manner.
[0003] At present, open-pit mines with large slope height differences adopt a relay method for drainage. A fixed pump station is set up on a certain step, and the mobile pump at the bottom of the pit discharges the wastewater from the bottom of the pit to the fixed pump station, and finally the fixed pump station pumps out the wastewater from the pit. The fixed pump station is located at the side of a certain step. The specific drainage system layout is as follows: Figure 1 As shown. A mobile pump station 1 is set at the bottom of the pit, and a fixed pump station is set on the step in the middle of the mine 2. The fixed pump station includes a water pump and a reservoir 14. The mobile pump discharges the wastewater from the bottom of the pit to the fixed pump station reservoir 14, and the fixed pump station water pump discharges the water in the pit out of the mining pit. This type of fixed pump station is suitable for open-pit mines with large catchment areas and water volumes and mines with relatively good geological conditions. However, the drainage pump station also has the problem of slope pressure and is affected by external conditions, so it is necessary to build a fixed pump station pump room. Not only is the economic investment large, but there is also the possibility of pressure on the mine, and even affects the normal production of the mine. Summary of the invention
[0004] The purpose of the utility model is to provide an open-pit mine relay drainage system, which solves and overcomes the problems of existing slope pressure on mines and poor geological conditions in establishing open-pit fixed drainage pumping stations by setting up water tanks.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:
[0006] A relay drainage system for an open pit mine, comprising a mobile pumping station arranged at the bottom of an open pit and a fixed pumping station arranged on a middle platform, characterized in that the fixed pumping station comprises a fixed water pump and a plurality of water tanks, the fixed water pump is connected to each water tank, connecting pipes are arranged between the water tanks so that each water tank is interconnected, and a drainage pipe for draining water out of the open pit is arranged at the last water tank.
[0007] Furthermore, 2 to 5 steel structure material water tanks are arranged at the fixed pump station, and the water tanks are arranged in a circular or rectangular shape according to actual conditions.
[0008] Furthermore, a partition steel plate is arranged in the middle of each water tank to play a sedimentation role, and a first gate valve is arranged between the water tanks to control the flow.
[0009] Furthermore, two inspection manholes are provided on each water tank for use in cleaning sludge, etc.
[0010] Furthermore, the height of the water pipe suction port of the fixed water pump arranged in the water tank is not less than 1800mm from the bottom of the water tank, and a second gate valve is arranged on the pipeline connecting the fixed water pump and each water tank, and the water inlet is controlled by the second gate valve.
[0011] Furthermore, the total effective volume of the water tank is not less than the normal water discharge volume for 0.5h.
[0012] Furthermore, a water level monitoring sensor is provided in the water tank.
[0013] The utility model aims at the problems of difficult construction, long construction period, high support cost and non-reusability of traditional fixed pumping stations. First, a detachable and easily movable water tank is set in the fixed pumping station to replace the traditional water storage tank; second, a partition in the middle of a single water tank is designed to play a role in wastewater sedimentation; third, all water pumps can be connected to the arranged water tanks to solve the problem of "water grabbing" by water pumps during heavy rains; fourth, the water tanks are connected through sufficiently large water pipes to meet the water suction requirements of the water pumps. When draining water normally, the normally working water pump only draws water from the last water tank and then discharges it outside the pit. When draining water during heavy rains, the working water pump can draw water from any water tank to ensure smooth drainage.
[0014] The utility model of an open-pit mine relay drainage system has the following beneficial effects:
[0015] The utility model improves the original method and builds a water tank made of steel structure or high-strength material on the slope of the open pit to replace the traditional water storage tank. After the drainage method is improved, the construction period of the fixed pump station is greatly reduced, and the construction cost is also reduced. The fixed pump station can also be built in a step with broken geological conditions and unstable slopes to solve the problem of ore compression in the fixed pump station and reduce ore loss. It can also be moved to other steps according to actual conditions, and the water tank can be reused. Setting 2 to 5 water tanks can ensure the storage of normal and storm water. The water tank is connected by a pipe with a large enough diameter to ensure the continuity of water absorption by the water pump. Setting a partition in the water tank can make the wastewater settle step by step, reduce the silt entering the water pump, and increase the service life of the water pump. The water tank is provided with a maintenance manhole to facilitate mud cleaning and maintenance of the water tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is the general relay drainage system mentioned in the background technology;
[0017] Figure 2This is a schematic diagram of a relay drainage system for an open-pit mine of the utility model;
[0018] Figure 3 This is a system layout diagram of a fixed pump station of an open-pit mine relay drainage system of the utility model;
[0019] Figure 4 This is a plan layout diagram of a fixed pump station for an open-pit mine relay drainage system of the utility model;
[0020] In the figure: 1. Mobile pumping station, 2. Ore body, 3. Fixed pumping station, 4. Fixed water pump, 5. Water tank three, 6. First gate valve, 7. Partition, 8. Inspection manhole, 9. Steel pipe, 10. Drain pipe, 11. Second gate valve, 12. Water tank two, 13. Water tank one, 14. Reservoir. DETAILED DESCRIPTION
[0021] The present invention is further described below with reference to the accompanying drawings and embodiments. Figures 2 to 4 The mobile pump station 1 at the bottom of the ore body 2 drains the water from the open pit bottom pool through the drainage pipe to Figure 2 In the water tank 1 13 in the fixed pump station 3, the water tank 3 5, the water tank 2 12, and the water tank 1 13 are connected through the steel pipe 9, and the fixed water pump 4 discharges the waste water in the water tank to the outside of the mining pit through the drainage pipe 10.
[0022] A first gate valve 6 is provided between water tank 1 13, water tank 2 12 and water tank 3 5 to control flow.
[0023] A partition 7 is arranged in the middle of each water tank to play a sedimentation role.
[0024] Two inspection manholes 8 are provided at a certain distance from each water tank for use in cleaning sludge, etc.
[0025] The fixed water pump 4 is connected to the water tank three 5, the water tank two 12, and the water tank one 13 through pipelines, and the second gate valve 11 is used to control the water inlet.
[0026] The effective volume of the three water tanks should not be less than the normal water discharge volume for 0.5h.
[0027] The height of the water pump suction pipe outlet of the fixed pump station set in the water tank is maintained at no less than 1800mm from the bottom of the water tank, which is beneficial to reduce silt entering the water pump. A water level monitoring sensor is installed in the water tank.
[0028] The utility model is an open-pit mine relay drainage system that replaces the traditional concrete water storage tank with a fixed pump station water tank, which is convenient for movement and can also solve the problem of high cost of concrete structure water tanks caused by poor geology. After improving the traditional drainage fixed pump station, the fixed pump station can reduce the high cost problem caused by pressure mining and geological conditions. It can be unaffected by geological conditions and slope instability.
[0029] Example 1
[0030] Located in an open-pit mine in the Democratic Republic of Congo, the open-pit mine has a closed circle of 1,300m and has been mined to the bottom of the pit to 1,165m. A mobile pumping station is used at the bottom of the pit, and a fixed pumping station is built on the 1,225m step to drain the wastewater out of the pit. Due to the broken geological conditions on site, it is difficult to purchase steel and cement on site, and the slope is prone to collapse. The construction of a fixed pumping station with a traditional pool is not suitable for the site conditions.
[0031] According to the actual situation on site, a fixed pump station is built by using steel structure water tanks instead of the traditional water storage tank model. 3 / d and the maximum inflow is 601863m 3 / 7d, using 5 sets of Q=1000m 3 / h, H=95 centrifugal pumps, 2 are working normally, 2 are on standby and 1 is under maintenance. 5 are working at maximum water volume.
[0032] The water tank has a diameter of 9m and a height of 10m. The effective volume of a single water tank is 470m 3 The center distance between each water tank is 12m, and a 5m high partition is set inside the water tank to settle the silt. Two DN800 steel pipes are used to connect the water tanks, and each water tank is equipped with a DN800 electric gate valve. The water pump suction pipe is set 1.8m away from the water tank foundation to prevent silt from entering the water pump. A water level monitoring sensor is set in each water tank.
[0033] The utility model effectively solves the relay drainage process system of open-pit mines with poor geological conditions and unstable slopes on site. First, water tanks are used instead of traditional water reservoirs; second, three water tanks are set up to play the role of wastewater sedimentation, and the water level monitoring in the water tanks is automatically controlled through the control console; third, the construction is simple and the cost is low.
Claims
1. An open pit mine relay drainage system, comprising a mobile pumping station arranged at the bottom of an open pit and a fixed pumping station arranged on a middle platform, characterized in that: The fixed pump station includes a fixed water pump and several water tanks. The fixed water pump is connected to each water tank. Connecting pipes are arranged between the water tanks so that each water tank is interconnected. A drainage pipe is arranged at the last water tank to discharge water outside the open pit.
2. The open-pit mine relay drainage system according to claim 1, characterized in that: The fixed pump station is equipped with 2 to 5 steel structure water tanks, which are circular or rectangular.
3. The open-pit mine relay drainage system according to claim 1, characterized in that: A partition steel plate is arranged in the middle of the water tank, and a first gate valve is arranged between the water tanks.
4. The open-pit mine relay drainage system according to claim 1, characterized in that: There are two inspection manholes on the water tank.
5. The open-pit mine relay drainage system according to claim 1, characterized in that: The height of the water pipe suction pipe port of the fixed water pump arranged in the water tank is not less than 1800mm from the bottom of the water tank, and a second gate valve for controlling water inlet of the water pump is arranged on the pipeline connecting the fixed water pump and each water tank.
6. The open-pit mine relay drainage system according to claim 1, characterized in that: The total effective volume of the water tank shall not be less than the normal water discharge volume for 0.5h.
7. The open-pit mine relay drainage system according to claim 1, characterized in that: A water level monitoring sensor is provided in the water tank.