Center line method tailing dam sand amount balance calculation processing method

Abstract

The invention belongs to the technical field of metal and non-metal mine tailing pond damming, and particularly relates to a midline method tailing dam sand amount balance calculation treatment method which comprises the following steps: establishing a tailing pond entity model according to an actually measured topographic map of a tailing pond; establishing a vertical plane segmentation model according to the initial position of overflow tailings in the tailings pond; drawing a coarse sand yield curve according to the volume of the established vertical plane segmentation model and the densities of the coarse sand and the fine sand; and designing parameters of the cyclone of the tailing pond grading equipment according to the yield of the coarse sand. Compared with the prior art, the center line method tailing dam sand amount balance calculation and disposal method is applied to the design stage of a tailing pond, center line method damming and accurate calculation of sand amount balance are facilitated, the sand amount disposal scheme is planned in the design stage, the sand setting damming investment in the operation period can be effectively reduced, and the operation period is shortened. The method has important significance in the aspects of economy and environmental protection.

Description

Technical Field

[0001] The invention belongs to the technical field of dam construction of tailings ponds in metal and non-metal mines, and in particular relates to a centerline method tailings dam sand balance calculation and disposal method. Background Art

[0002] Tailings ponds refer to places formed by damming the valley mouth or enclosing land to store tailings or other industrial waste discharged from metal or non-metal mines after ore sorting. Among these tailings ponds, upstream tailings ponds account for the vast majority of them because they are easy to operate and manage. As my country's regulatory policies on tailings ponds become stricter, mid-line tailings ponds are increasingly welcomed by enterprises and regulatory authorities because they are more stable and have a larger storage capacity under the same dam height conditions than upstream tailings ponds. The mid-line tailings pond uses a cyclone to separate coarse tailings to build a dam. The cyclone sand settling yield is a key factor affecting the construction of the mid-line tailings pond.

[0003] The tailings pond constructed by the centerline method requires a balance between the sand volume in the dam area and the reservoir, and the sand volume inside and outside the centerline changes dynamically with the tailings accumulation elevation. The volume of the tailings pond dam area is the volume enclosed by the outer slope surface of the current elevation, the valley terrain and the centerline surface. Due to the irregular terrain, the common calculation method is to use plane layered calculation. The calculation workload is large and the accuracy is low. If the amount of coarse sand is insufficient, the tailings pond cannot be operated safely. If the amount of coarse sand is excessive, it will be difficult to discharge and environmental protection problems will occur.

[0004] At present, there are some problems with the tailings pond built with the center-line method: the tailings pond built with the center-line method rises with the dam top, and both the reservoir and the downstream slopes are raised. Each elevation is equivalent to a tailings pond, and the storage capacity calculation workload is large and the accuracy is low. The sand balance determines whether the tailings pond can achieve the center-line dam construction method. There are very few tailings ponds built with the center-line method in China, and there is a lack of economically feasible technical solutions to the sand balance.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the existing defects and provide a centerline method for tailings dam sand balance calculation and disposal to solve the technical problems in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A centerline tailings dam sand balance calculation and disposal method comprises the following steps:

[0009] S100, establishing a tailings pond entity model according to the measured topographic map of the tailings pond;

[0010] S200, establishing a vertical plane segmentation model according to the starting position of the overflow tailings in the tailings pond;

[0011] S300, drawing a coarse sand yield curve according to the volume of the established vertical plane segmentation model and the densities of coarse sand and fine sand;

[0012] S400. Design the parameters of the cyclone of the tailings pond classification equipment according to the coarse sand yield.

[0013] Preferably, in step S100:

[0014] The physical model of the tailings pond is a 1:1000 measured topographic map of the tailings pond.

[0015] Preferably, in step S200:

[0016] The vertical plane segmentation model specifically includes: the segmentation model in the reservoir parallel to the beach surface and the segmentation model in the dam area parallel to the dam surface.

[0017] Preferably, in step S200:

[0018] The segmentation model in the reservoir parallel to the beach surface and the segmentation model in the dam area parallel to the dam surface are segmented every 5m.

[0019] Preferably, the centerline tailings dam sand balance calculation and disposal method further comprises the following steps:

[0020] S500. Verify whether the centerline damming method can be implemented based on the coarse sand yield curve and the parameters of the cyclone.

[0021] Preferably, in step S500:

[0022] If the centerline dam construction plan cannot be implemented, adjustments shall be made in the following ways:

[0023] Adjust the centerline position of the tailings pond; or raise the height of the water filtration and sand retaining dam; or steepen the average slope ratio of the outer slope of the accumulation dam; or increase the coarse particle content of the whole tailings before classification.

[0024] Compared with the prior art, the present invention provides a centerline tailings dam sand balance calculation and disposal method for application in the tailings pond design stage, which is conducive to the realization of centerline dam construction and accurate calculation of sand balance. Planning the sand disposal plan in the design stage can effectively reduce the investment in sand settling and dam construction during operation, and is of great significance in terms of economy and environmental protection.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The present invention provides a flow chart of a method for calculating and disposing the balance of sand in a tailings dam using the centerline method.

[0028] Figure 2 A schematic diagram of the centerline method dam construction zoning in a centerline method tailings dam sand balance calculation and disposal method proposed in an embodiment of the present invention.

[0029] Figure 3 A schematic diagram of three-dimensional modeling in a centerline method for tailings dam sand balance calculation and disposal proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0031] like Figure 1-3 As shown, an embodiment of the present invention provides a centerline method for tailings dam sand balance calculation and disposal, comprising the following steps:

[0032] S100, establishing a tailings pond entity model according to the measured topographic map of the tailings pond;

[0033] Among them, in the above steps, the specific tailings pond entity model is to import the 1:1000 measured topographic map contour lines into software that can generate surfaces and entities to establish the tailings pond entity model.

[0034] S200, establishing a vertical plane segmentation model according to the starting position of the overflow tailings in the tailings pond;

[0035] Among them, in the above steps, the model is divided into sections with an interval of 5m parallel to the beach surface in the reservoir, and the model is divided into sections with an interval of 5m parallel to the dam surface in the dam area.

[0036] S300, drawing a coarse sand yield curve according to the volume of the established vertical plane segmentation model and the densities of coarse sand and fine sand;

[0037] S400. Design the parameters of the cyclone of the tailings pond classification equipment according to the coarse sand yield.

[0038] The embodiment of the present invention provides a centerline method for tailings dam sand balance calculation and disposal, further comprising the following steps:

[0039] S500. Verify whether the centerline damming method can be implemented based on the coarse sand yield curve and the parameters of the cyclone.

[0040] Preferably, in step S500:

[0041] If the centerline dam construction plan cannot be implemented, adjustments shall be made in the following ways:

[0042] If the sand settling cannot meet the dam construction requirements, first adjust the centerline position of the tailings pond, and select a site plan with a narrow and long dam area and a wide reservoir. If it still cannot meet the requirements, raise the height of the water filter sand dam and steepen the average slope ratio of the outer slope of the dam. If the sand settling does not meet the requirements after the adjustment, negotiate with the construction unit to see whether the coarse particle content of the whole tailings before classification can be increased, such as adjusting the concentrator process, sand selection process, etc., and whether it is economical to choose waste rock or weathered material to supplement. If the sand settling is surplus in the early stage but insufficient in the later stage, reasonable planning should be made in the design stage to first accumulate the surplus sand settling in front of the water filter sand dam to achieve the balance of sand settling during the entire operation period.

[0043] The present invention is applied in the design stage of tailings ponds, which is conducive to realizing the centerline method of dam construction and accurately calculating the sand balance. Planning the sand disposal plan in the design stage can effectively reduce the investment in sand settling and dam construction during operation, which is of great significance in terms of economy and environmental protection.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A method for calculating and disposing the sand balance of tailings dam using the centerline method, characterized in that: The steps include: S100, establishing a tailings pond entity model according to the measured topographic map of the tailings pond; S200, establishing a vertical plane segmentation model according to the starting position of the overflow tailings in the tailings pond; S300, drawing a coarse sand yield curve according to the volume of the established vertical plane segmentation model and the densities of coarse sand and fine sand; S400. Design the parameters of the cyclone of the tailings pond classification equipment according to the coarse sand yield.

2. A method for calculating and disposing the sand balance of a tailings dam using a centerline method according to claim 1, characterized in that: In step S100: The physical model of the tailings pond is a 1:1000 measured topographic map of the tailings pond.

3. The method for calculating and disposing the sand balance of a tailings dam using a centerline method according to claim 1, characterized in that: In step S200: The vertical plane segmentation model specifically includes: the segmentation model in the reservoir parallel to the beach surface and the segmentation model in the dam area parallel to the dam surface.

4. A method for calculating and disposing the sand balance of a tailings dam using a centerline method according to claim 3, characterized in that: In step S200: The segmentation model in the reservoir parallel to the beach surface and the segmentation model in the dam area parallel to the dam surface are segmented every 5m.

5. The method for calculating and disposing the sand balance of a tailings dam using a centerline method according to claim 1, characterized in that: The centerline tailings dam sand balance calculation and disposal method further comprises the following steps: S500. Verify whether the centerline dam construction scheme can be implemented based on the coarse sand yield curve and the parameters of the cyclone.

6. A method for calculating and disposing the sand balance of a tailings dam using the centerline method according to claim 5, characterized in that: In step S500: If the centerline dam construction plan cannot be implemented, adjustments will be made in the following ways: Adjust the centerline position of the tailings pond; or raise the height of the water filtration and sand retaining dam; or steepen the average slope ratio of the outer slope of the accumulation dam; or increase the coarse particle content of the whole tailings before classification.

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