Movable spillway for flood control of tailing pond

Abstract

The utility model discloses a movable spillway for flood control of a tailing pond. The movable spillway comprises a diversion canal, a water inlet, a control section, a transition section and a discharge chute section which are communicated front and back, and a movable gate is mounted on the control section and can be heightened layer by layer along with the rising of the water level in the tailing pond. The movable flashboards can be mounted or dismounted one by one according to the change of the tailing stacking height, so that the water level in the pond can be flexibly adjusted, and the safe operation of the tailing pond is ensured; a rubber water stop is arranged between the movable flashboards, and C20 concrete is filled and reinforced between the two layers of gates, so that water leakage and sand leakage are effectively prevented, and the safety and reliability of the spillway are improved; cost is low, and construction is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of tailings pond flood drainage, and particularly relates to a movable spillway for tailings pond flood control. Background Technique

[0002] In recent years, with the expansion of the scale of mine exploitation and the improvement of environmental protection requirements, the safety management and environmental protection of tailings ponds have become the focus of attention inside and outside the industry. To ensure the safe operation of tailings ponds, it is necessary to set up efficient and reliable tailings pond flood control facilities.

[0003] At present, tailings ponds usually adopt a variety of ways such as drainage wells, chutes, spillways, etc. for flood drainage. Among them, the spillway plays an important role in regulating the water level of the tailings pond and ensuring the safety of the pond body.

[0004] However, the traditional spillway has the following limitations in design:

[0005] 1. High fixity and poor adaptability: Once the traditional spillway is built, its structural dimensions and water level regulation range are basically fixed, and it is difficult to flexibly adjust the operating water level according to the change of the tailings accumulation height in the tailings pond, thus affecting the safety and operating efficiency of the tailings pond.

[0006] 2. Prone to be affected by the environment: Fixed flood drainage facilities such as drainage wells are prone to damage under extreme weather and seasonal change conditions, such as the frost heaving effect in winter, increasing the safety risk of the tailings pond.

[0007] 3. Complicated construction and maintenance: The construction and maintenance costs of traditional spillways and drainage facilities are relatively high, and regular inspection and maintenance are required, increasing the management difficulty and operating cost of the tailings pond. Content of the Utility Model

[0008] The main purpose of the utility model is to provide a movable spillway for tailings pond flood control that can automatically adjust the operating water level according to the change of the tailings accumulation height.

[0009] The movable spillway for tailings pond flood control provided by the utility model includes a water diversion channel, a water inlet, a control section, a transition section and a discharge chute that are connected front and back; a movable gate is installed on the control section, and the gate can increase layer by layer as the water level in the tailings pond rises.

[0010] In an implementation manner of the above spillway, both the water diversion channel and the water inlet include a bottom plate and side walls.

[0011] In an implementation manner of the above spillway, the water diversion channel is segmented, and the lower section of the channel section forms an inverted trapezoidal channel with a natural slope of 1:2, and the surface of the channel is paved with HDPE film.

[0012] In an embodiment of the above spillway, the water inlet is a trumpet-shaped inlet.

[0013] In an embodiment of the above spillway, the control section includes a bottom slab and side walls, on which a gate slot, a gate and a rubber waterstop are provided.

[0014] In an embodiment of the above spillway, the weir type of the control section is a broad-crested weir without a sill, and the weir crest elevation is flush with the dead water level; a hoisting opening is reserved at the top of the control section.

[0015] In an embodiment of the above spillway, two pairs of front and rear gate slots are provided on the side walls on both sides of the control section; two back-to-back channel steels are installed between a pair of gate slots by hoisting, and multiple pairs of channel steels are installed upward one by one.

[0016] In an embodiment of the above spillway, rubber waterstops are provided between the upper and lower and adjacent channel steels.

[0017] In an embodiment of the above spillway, the space between the gates is filled with C20 concrete later.

[0018] In an embodiment of the above spillway, the side walls of the control section are structurally reinforced by reinforced concrete support beams and reinforced concrete support columns.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. Flexible and adjustable: It can flexibly adjust the water level in the reservoir according to the change of the tailings accumulation height by installing or disassembling the movable gate plates one by one, ensuring the safe operation of the tailings reservoir;

[0021] 2. Safe and reliable: Rubber waterstops are provided between the movable gate plates, and the space between the two layers of gates is filled and reinforced with C20 concrete, effectively preventing water and sand leakage and improving the safety and reliability of the spillway;

[0022] 3. Low cost and simple construction: The device has a simple structure, easy-to-obtain materials, convenient construction and installation, and can significantly reduce the construction cost and maintenance difficulty of the flood control facilities of the tailings reservoir;

[0023] 4. Wide application range: It is applicable to the flood discharge of hillside-type or flat-type tailings reservoirs with relatively low tailings dam heights, and has strong practicability and popularization value. Brief Description of the Drawings

[0024] Figure 1 It is a plan view of an embodiment of the present utility model.

[0025] Figure 2 It is Figure 1 The plan structure diagram of the control section in

[0026] Figure 3 It isFigure 2 Schematic cross-sectional structure diagram at A-A in [the figure].

[0027] Figure 4 It is Figure 2 Schematic cross-sectional structure diagram of the side wall of the control section in [the figure]. Specific implementation manners

[0028] Next, the related technical solutions will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figure 1 shown, the movable spillway for flood control in a tailings pond disclosed in this embodiment includes a water diversion channel 1, a water inlet 2, a control section 3, a transition section 4, and a chute section 5.

[0030] Both the water diversion channel 1 and the water inlet 2 include a bottom slab and side walls.

[0031] The water diversion channel 1 is segmented according to the actual height of the channel section. For the lower channel section, a natural slope of 1:2 is adopted to form an inverted trapezoidal channel, and an HDPE membrane with a thickness of 1.5 mm is laid on the channel surface; the side wall thickness is 50 cm, and the bottom slab thickness is 30 cm.

[0032] The water inlet 2 is used to guide the water flow smoothly into the spillway and adopts a flared inlet method.

[0033] As Figure 2 and Figure 3 shown, the control section 3 includes a bottom slab and side walls and is used to control the discharge capacity. The control section also includes a gate slot 6, a gate 7, and a rubber water stop 8.

[0034] The weir type of the control section 3 is selected as a broad-crested weir without a sill, and the weir width is set according to the actual required discharge capacity. The weir crest elevation is flush with the dead water level; a hoisting opening is reserved at the top of the control section.

[0035] Two pairs of front and rear gate slots 6 are arranged on the side walls on both sides of the control section 3. Two channel steels facing away from each other are installed between a pair of gate slots by hoisting, and multiple pairs of channel steels are installed one by one upward to serve as the movable gate 7. The water level in the reservoir can be adjusted by installing the gates one by one. Rubber water stops 8 are provided between the upper and lower and adjacent channel steels, and C20 concrete is filled between the two layers of gates later to reinforce the gates and prevent water and sand leakage at the same time.

[0036] As Figure 4As shown in the figure, the side walls of the control section 3 are structurally reinforced with reinforced concrete support beams 9 and reinforced concrete support columns 10, and a hoisting opening is reserved at the top; when not hoisted, it is covered with steel plates to ensure normal passage during daily inspections of the reservoir area.

[0037] The transition section 4 is used to connect the control section and the chute section.

[0038] The chute section 5 is used to discharge the flood over the weir, and it can adopt the form of a culvert or an open channel according to the actual terrain of the tailings pond site.

[0039] The higher section of the channel in the diversion channel 1, the bottom plate of the water inlet 2, the control section 3, the transition section 4, and the chute section 5 are cast with C25 reinforced concrete structures.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the foregoing embodiments have been described in detail, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A movable spillway for flood control of tailings pond, characterized by: It includes a water diversion channel, a water inlet, a control section, a transition section and a chute section connected front and back; a movable gate is installed on the control section, and the gate can be gradually raised as the water level in the tailings pond rises.

2. The movable spillway for flood control of tailings pond according to claim 1, characterized in that: The water diversion channel and the water inlet both include a bottom plate and side walls.

3. The movable spillway for flood control of tailings pond according to claim 2, characterized in that: The water diversion channel is arranged in sections, and the lower section of the channel adopts a natural 1:2 slope to form an inverted trapezoidal channel, and a HDPE film is laid on the channel surface.

4. The movable spillway for flood control of tailings pond according to claim 2, characterized in that: The water inlet is a trumpet-shaped inlet.

5. The movable spillway for flood control of tailings pond according to claim 1, characterized in that: The control section comprises a bottom plate and side walls, on which gate grooves, gates and rubber waterstops are arranged.

6. The movable spillway for flood control of tailings pond according to claim 5, characterized in that: The weir type of the control section is a wide-top weir without a ridge, and the elevation of the weir top is flush with the dead water level; a lifting port is reserved at the top of the control section.

7. The movable spillway for flood control of tailings pond according to claim 5, characterized in that: Two pairs of front and rear gate slots are arranged on the side walls on both sides of the control section; two back-to-back channel steels are installed between a pair of gate slots by hoisting, and multiple pairs of channel steels are installed upward one by one.

8. The movable spillway for flood control of tailings pond according to claim 7, characterized in that: Rubber waterstops are installed above and below and between adjacent channel steels.

9. The movable spillway for flood control of tailings pond according to claim 7, characterized in that: The gates will be filled with C20 concrete later.

10. The movable spillway for flood control of tailings pond according to claim 5, characterized in that: The side walls of the control section are structurally reinforced with reinforced concrete support beams and reinforced concrete support columns.

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