Tailing anti-seepage dam slope protection structure

Abstract

The utility model provides a side slope protection structure of a tailing anti-seepage dam, a buffer layer is arranged on the outer side of a tailing pile, and a buffer slope is arranged on the outer side of the buffer layer; the anti-seepage layer is arranged on the buffer slope, the bottom of the anti-seepage layer is provided with an anti-seepage bottom with the elevation located below the bottom elevation of the tailing pile or the buffer layer, and the anti-seepage bottom extends to the position below the buffer layer in the horizontal direction; wherein a first impermeable film is arranged in the impermeable layer. The buffer layer and the anti-seepage layer are arranged on the outer side of the tailing pile, and the anti-seepage structure is formed through the first anti-seepage film, so that water is prevented from seeping towards the outer side of the tailings in the rainy season, and the ecological environment of the tailing area is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tailing anti -infiltration, specifically related to a tailing anti -infiltration dam slope protection structure. BACKGROUND

[0002] Tailing is the place of tailing or other industrial waste slag discharged after the sorting of metal or nonmetal ore, which is formed by damming or land sealing, and is prone to induce local slope instability under external force, and further trigger secondary geological disasters such as landslide and debris flow, which is a major safety hazard of mine safety production, and tailing seepage water is the main pollutant, and the prior art only performs anti -infiltration treatment below the tailing, and the tailing is prone to flow out of the tailing pile through cracks or seepage in the rainy season, thereby causing environmental pollution.

[0003] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned prior art deficiencies. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of tailing anti -infiltration dam slope protection structures, which is to overcome the deficiencies in the prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A tailing anti -infiltration dam slope protection structure, comprising:

[0007] Tailing pile;

[0008] Buffer layer, the buffer layer is arranged outside the tailing pile, and the outside of the buffer layer is provided with buffer slope;

[0009] Anti -infiltration layer, the anti -infiltration layer is arranged on the buffer slope, the bottom of the anti -infiltration layer is provided with anti -infiltration bottom with the elevation below the bottom elevation of the tailing pile or the buffer layer, and the anti -infiltration bottom extends to below the buffer layer along horizontal direction;

[0010] Wherein, the anti -infiltration layer is internally provided with first anti -infiltration membrane.

[0011] Preferably, the first anti -infiltration membrane includes multiple layers, and the multiple layers of the first anti -infiltration membrane are distributed with interval and parallel to the buffer slope;

[0012] The bottom of the first anti -infiltration membrane extends to the lower edge of the anti -infiltration bottom and is bent horizontally to one side of the buffer layer.

[0013] Preferably, the lower edge of the anti -infiltration bottom is provided with horizontally extending closed membrane, and the closed membrane is fixed with the horizontal bending below the first anti -infiltration membrane.

[0014] Preferably, the first anti -infiltration membrane and the closed membrane are polyethylene material, and the two are fixed by hot melting.

[0015] Preferably, an array of a plurality of anchor rods is arranged above the buffer layer and the impervious layer, and the anchor rods are connected to the corresponding first impervious membrane.

[0016] Preferably, an anchor net is connected to the upper end of the anchor rod.

[0017] Preferably, an impervious slope is arranged outside the impervious layer, and the impervious slope is paved with turf.

[0018] Preferably, the impervious layer and the buffer layer are both formed by accumulation of cohesive soil.

[0019] Beneficial effects: the buffer layer and the impervious layer are arranged outside the tailing heap, and the impervious structure is formed by the first impervious membrane, so as to avoid water seepage to the outside of the tailing heap in the rainy season, and to ensure the ecological environment of the tailing area. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings constituting a part of the specification of the application are used to provide further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. Among them:

[0021] Figure 1 A diagram of the protection structure in the specific embodiment provided by the present application.

[0022] In the drawings: 1, tailing heap; 2, seepage well; 3, buffer layer; 4, impervious layer; 5, first impervious membrane; 6, anchor rod; 7, impervious bottom; 8, closed membrane; 9, second impervious membrane; 10, cohesive soil layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0024] In the description of the utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and do not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, cannot be understood as limiting the utility model. The terms "connected", "connected" used in the utility model should be understood broadly, for example, can be fixed connection, can also be detachable connection, can be directly connected, or indirectly connected through intermediate components, and for ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] The utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0026] As Figure 1 shown, a tailing anti-seepage dam slope protection structure, including tailing 1, buffer layer 3, anti-seepage layer 4, tailing 1 is formed by piling, the outer side of tailing 1 is equipped with gradient, to prevent the slide to the outside, buffer layer 3 is arranged at the outer side of tailing 1, the outer side of buffer layer 3 is equipped with buffer slope, to facilitate the anti-seepage layer 4 accumulation, anti-seepage layer 4 is arranged on buffer slope, to further increase the anti-seepage capacity, the bottom of anti-seepage layer 4 is equipped with anti-seepage bottom 7 with the elevation below the bottom elevation of tailing 1 or buffer layer 3, the anti-seepage bottom 7 is formed by viscous soil ramming, and the anti-seepage bottom 7 extends to below buffer layer 3 along the horizontal direction, wherein, the inside of anti-seepage layer 4 is equipped with first anti-seepage membrane 5, the water in tailing 1 can be avoided to the outside by first anti-seepage membrane 5, first anti-seepage membrane 5 includes multiple layers, specifically according to the thickness of anti-seepage layer 4, generally not less than 3 layers, multiple first anti-seepage membranes 5 are distributed with interval, and parallel to buffer slope, to further increase the anti-seepage capacity, the bottom of first anti-seepage membrane 5 extends to the lower edge of anti-seepage bottom 7, and is bent horizontally to one side of buffer layer 3.

[0027] Further, the lower edge of anti-seepage bottom 7 is equipped with horizontally extending sealing membrane 8, the sealing membrane 8 is fixed with the horizontal bending below first anti-seepage membrane 5, first anti-seepage membrane 5 and sealing membrane 8 are polyethylene material, and the two are fixed by hot melting.

[0028] In an optional embodiment, the first impermeable membrane 5 can extend to the bottom of the tailings heap 1, and a plurality of anchor rods 6 are arranged in an array above the buffer layer 3 and the impermeable layer 4, the anchor rods 6 pass through the corresponding first impermeable membrane 5, in general, the bottom of the anchor rod 6 extends to the upper edge of the impermeable bottom 7, and is not inserted into the impermeable bottom 7, thereby ensuring the impermeability of the bottom, the outer wall of the anchor rod 6 is provided with a grouting hole, the plurality of anchor rods 6 are consolidated with the corresponding buffer layer 3 or impermeable layer 4 through grouting, the stability of the impermeable layer 4 is ensured, and the upper end of the anchor rod 6 is correspondingly connected with an anchor net, the consolidation capacity between the anchor rods 6 is improved through this form, and further, the outside of the impermeable layer 4 is provided with an impermeable slope, and the impermeable slope is paved with turf, so as to avoid the generation of mud flow, and the buffer layer 3 and the impermeable layer 4 are both formed by piling up cohesive soil.

[0029] Further, a second impermeable membrane 9 is laid on the tailings heap 1, a soil layer 10 is piled up above the second impermeable membrane 9, and vegetation is planted on the soil layer, so as to avoid water and soil loss, and the second impermeable membrane 9 is used to avoid the pollution of underground water seepage caused by a large amount of rainwater infiltration in the rainy season, and further, a drainage ditch is laid on the tailings heap 1, the drainage ditch extends to a specified liquid accumulation pit, and a seepage well 2 is arranged on the tailings heap 1, a plurality of seepage wells 2 are uniformly distributed on the tailings heap 1, and the depth of the seepage well 2 is adapted to the piling height of the tailings heap 1; a seepage pipe is arranged in the seepage well 2, gravel is filled between the seepage well 2 and the seepage pipe, a suction pipe is arranged in the seepage pipe, the suction end of a suction pump is connected with the suction pipe, and the discharge end of the suction pump extends to the drainage ditch, so as to pump out the tailings underground water when the underground water is abundant, discharge the tailings underground water after treatment through the liquid accumulation pit, and perform harmless treatment.

[0030] In an optional embodiment, a plurality of support mechanisms are arranged on the outside of the seepage pipe in a longitudinal direction, the support mechanisms are used to support the seepage pipe, avoid the influence of settlement on the seepage pipe, and the support mechanism comprises a support sleeve and a support column, the support sleeve is sleeved on the outside of the seepage pipe, the length of the support column is adapted to the radial difference between the outer wall of the seepage pipe and the inner wall of the seepage well 2, and a plurality of support columns are uniformly distributed in the circumferential direction of the support sleeve, the number of the support columns is four in the present application, and the end of the support column is provided with an arc-shaped support plate corresponding to the inner wall of the seepage well 2, so as to increase the support area and ensure the support stability.

[0031] In another embodiment, the support column is supported in a ring sleeve, the ring sleeve is adapted to the inner wall of the seepage well 2 and the length of the support sleeve, so as to improve the support capacity and ensure the stability of the seepage well 2.

[0032] In an optional embodiment, a conical liquid collecting groove is arranged at the bottom of the seepage well 2, the liquid seepage is collected by the liquid collecting groove, a filter plate corresponding to the gravel is arranged above the liquid collecting groove, the seepage pipe extends into the liquid collecting groove, and a filter cover is arranged at the lower end of the suction pipe, so as to effectively pump out the seepage water through collection.

[0033] In an optional embodiment, the tailings bottom is treated with anti-seepage, specifically after the reservoir area is leveled, a layer of clay protection layer is laid first, then HDPE film, polyethylene film and other anti-seepage materials are laid as the third anti-seepage film, and finally a layer of clay protection layer is laid, the closed film 8 at the anti-seepage bottom 7 is fixed with the third anti-seepage film at the tailings bottom through heat melting.

[0034] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is within the scope of the present application.

Claims

1. A tailings dam seepage barrier slope protection structure, characterised in that, The application relates to a tailing heap, which comprises: a tailing heap; a buffer layer arranged outside the tailing heap, the outer side of the buffer layer being provided with a buffer slope; a seepage-proof layer arranged on the buffer slope, the seepage-proof layer being provided with a seepage-proof bottom with an elevation lower than the bottom elevation of the tailing heap or the buffer layer, and the seepage-proof bottom extending to below the buffer layer in the horizontal direction; wherein the seepage-proof layer is internally provided with a first seepage-proof membrane.

2. The tailings dam seepage barrier of claim 1, wherein, The first seepage-proof membrane comprises multiple layers, the multiple layers of the first seepage-proof membrane are distributed at intervals, and are parallel to the buffer slope; the bottom of the first seepage-proof membrane extends to the lower edge of the seepage-proof bottom and is horizontally bent to one side of the buffer layer.

3. The tailings dam seepage barrier of claim 2, wherein, The lower edge of the seepage-proof bottom is provided with a horizontally-extending sealing membrane, and the sealing membrane is fixed with the horizontal bend below the first seepage-proof membrane.

4. The tailings dam seepage barrier of claim 3, wherein, The first seepage-proof membrane and the sealing membrane are made of polyethylene and are fixed by heat melting.

5. The tailings dam seepage barrier of claim 1, wherein, The buffer layer and the seepage-proof layer are provided above with multiple anchor rods arranged in an array, and the anchor rods pass through the corresponding first seepage-proof membranes.

6. The tailings dam seepage barrier of claim 5, wherein, The upper ends of the anchor rods are correspondingly connected with anchor nets.

7. The tailings dam seepage barrier of claim 1, wherein, The outer side of the seepage-proof layer is provided with a seepage-proof slope, and the seepage-proof slope is paved with turf.

8. The tailings dam seepage barrier of claim 1, wherein, The seepage-proof layer and the buffer layer are both formed by accumulating viscous soil.

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