CN202509446U

CN202509446U - Tailings dam for river intercepting type tailings pond

Info

Publication number: CN202509446U
Application number: CN2012201248072U
Authority: CN
Inventors: 苟治强
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-10-31
Anticipated expiration: 2022-03-29

Abstract

The utility model relates to tailings dams, in particular to a tailings dam for a river intercepting type tailings pond. According to the tailings dam, a dam body is the sand dam formed by compressing sand; an impermeable layer is paved on the face of the dam body facing the water; a dam protecting structure is arranged at the outer part on one side of the dam body facing the river; a group of level impermeable layers is embedded into the dam body; and the level impermeable layers are lengthways arranged at intervals from top to bottom; each level impermeable layer is extended from the face of the dam body facing the river to the inside of the dam body, and the extending distance is less than the width of the dam body at a corresponding position. With the impermeable layers, the sand dam can reduce the permeating performance of the water at the tailings pond; the level impermeable layer can dredge the rainwater and synchronously reduce the damage of the vertical water and capillary water to the sand dam of the dam body on one side facing the river; the dam protecting structure can prevent the dam body from flushing via the river, and can effectively reduce the difficulty in dam building, as well as the cost; and the construction is convenient to carry out. The tailings dam is mainly used as the initial dam or the post-free dam in a section without water bursting.

Description

Be used for cutting the tailing dam in type mine tailing storehouse, river

Technical field

The utility model relates to tailing dam, especially a kind of tailing dam that is used for cutting type mine tailing storehouse, river.

Background technology

The ore that metal or non-metal mine are exploited out is selected valuable concentrate through the ore dressing plant, produce the same " waste residue " of sand, is known as mine tailing.Tailings impoundment system in order to store the mine tailing of discharging in the ore dressing plant often abbreviates the mine tailing storehouse as, comprises reservoir area, tailing dam, the observation facility on drain off floodwaters structure and dam etc.Construct the difference of landform according to the mine tailing storehouse, the mine tailing storehouse is divided into: mountain valley-type mine tailing storehouse, be close to type mine tailing storehouse, mountain, flat type mine tailing storehouse, cut type mine tailing storehouse, river.Wherein, mountain valley-type mine tailing storehouse is the mine tailing storehouse of building a dam and forming at place, the mouth of a valley, mountain valley; Being close to type mine tailing storehouse, mountain is the mine tailing storehouse of building a dam near the mountain and being surrounded in the underfooting, hillside; Flat type mine tailing storehouse is the mine tailing storehouse of building a dam and surrounding at mild landform periphery; Cutting type mine tailing storehouse, river is one section riverbed of intercepting, above that, mine tailing storehouse that build a dam respectively in the two ends, downstream or three faces are built a dam forms.

Tailing dam is mine tailing storehouse be used for the blocking structure of going along with sb. to guard him of mine tailing and water, and general tailing dam is made up of initial dam and later stage dam.Initial dam is the dam body of building with materials such as soil, stone at the mine tailing dam site, in order to holding the mine tailing amount of ore dressing plant production initial stage discharge, and as the support on later stage dam.After going into operation in the ore dressing plant, with constantly entering of mine tailing, the dam dam crest is above in the early stage successively increases the little dam body that builds up with tailings, is referred to as sub-dam; The general designation later stage dam of the mine tailing lithosomic body of sub-dam before together with the Zi Ba dam.And superfine when the mine tailing particle, can't use tailings pile dam person, adopt the form on no later stage dam to store whole mine tailings, custom is referred to as once to build the dam.

Type mine tailing storehouse, above-mentioned section river has and does not account for farmland, advantage that the reservoir area catchment area is little, the difficulty height but it is built a dam, concretely:

One, border on the river, for fear of the tailing water polluted river water, dam body need adopt waterproof dam type, like the homogeneous earth dam that builds up with clay, silty clay or weathering earth material etc., and can't select permeable dam types such as loose rock dam, stone masonry dam for use;

Two, dam body borders on the river, and requires dam body to possess certain erosion resistibility, has further limited selecting for use of dam material and dam type;

Three, be used to construct the riverbed that cuts type mine tailing storehouse, river, be generally gravel geology, with respect to mountain valley-type mine tailing storehouse, be close to the geology of constructing in type mine tailing storehouse, mountain, flat type mine tailing storehouse, the geology poor stability, groundwater table is high, constructional difficulties.

The utility model content

It is low that the utility model technical problem to be solved provides a kind of difficulty of building a dam, and realizes that cost is low, the tailing dam that is used for cutting type mine tailing storehouse, river of easy construction.

The utility model solves the technical scheme that its technical problem adopted: the tailing dam that is used for cutting type mine tailing storehouse, river; Comprise the dam body basis and construct the dam body on the dam body basis; Said dam body is the sand dam that is formed by the sand compacting; The face near water of said dam body is equipped with impervious barrier, and the border on the river outer setting of a side of said dam body has the counter dam structure; Be provided with the one group of horizontal impervious layer that embeds in the dam body, each horizontal impervious layer longitudinally from top to bottom is provided with at interval, each horizontal impervious layer extend in the dam body near water by dam body and extended distance less than the dam body width of correspondence position.

Further, the basic effluent bed of said dam body is through excavation, smooth, compacting formation.

Further, said impervious barrier is made up of geomembrane and plastic sheeting, wherein geomembrane in the outside of plastic sheeting, plastic sheeting is between geomembrane and dam body.

Further, said horizontal impervious layer is made up of plastic sheeting.

Further, the both sides up and down that constitute the plastic sheeting of impervious barrier are imbedded respectively in the dam body, are made up of the part of adjacent level impervious barrier respectively the both sides up and down of plastic sheeting.

Further, said counter dam structure is the mortar flag stone barricade.

The beneficial effect of the utility model is: the sand dam has reduced the infiltration of water in the storehouse through impervious barrier; Through horizontal impervious layer, when guaranteeing that rainwater is dredged, reduce near water that face one side bar receives vertical water and capillary water to the harm of dam body, can guarantee that dam body is in dry state; Through the counter dam structure, avoid river to wash away.Dam material is mainly sand, stone, can draw materials nearby; The sand dam is less demanding to dam foundation engineering geological conditions, successively through the mode moulding that bulldozer paves, vibratory roller rolls, therefore can effectively reduce the difficulty of building a dam, cost, convenient construction.The tailing dam of the utility model mainly is applicable to no water burst location, can be used as initial dam, also can be used as no later stage dam.

Description of drawings

Fig. 1 is the sectional schematic diagram of the utility model tailing dam.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

As shown in Figure 1; The tailing dam that is used for cutting type mine tailing storehouse, river of the utility model; Comprise the dam body basis and construct the dam body 10 on the dam body basis; Said dam body 10 is the sand dams that formed by the sand compacting, and the face near water 11 of said dam body 10 is equipped with impervious barrier 20, and the border on the river outer setting of a side of said dam body 10 has the counter dam structure; Be provided with the one group of horizontal impervious layer 30 that embeds in the dam body 10, each horizontal impervious layer 30 longitudinally from top to bottom is provided with at interval, each horizontal impervious layer 30 by dam body 10 near water face 11 in dam body 10, extend and extended distance less than dam body 10 width of correspondence position.

Dam body 10 adopts the sand dam, and is successively through the mode moulding that bulldozer paves, vibratory roller rolls, less demanding to dam foundation engineering geological conditions.The sand dam is permeable type dam, lays impervious barrier 20 at the face near water 11 of dam body 10, has reduced the infiltration of water in the storehouse, increases dam body 10 impervious abilities, guarantees that dam body 10 is stable.Longitudinally at interval horizontal impervious layer 30 is set from top to bottom, and extended distance is less than dam body 10 width of correspondence position, a side dam body 10 strengthens the ability that dam bodys 10 are dredged rainwater through bordering on the river; Simultaneously, reduce near water that face 11 1 side dam bodys 10 receive vertical water and capillary water to the harm of dam body, can guarantee that dam body 10 is in dry state, guarantee that dam 10 bodies are stable.The counter dam structure is avoided especially river flood period washing away dam body 10 of river.Dam material is mainly sand, stone, can draw materials nearby, therefore can effectively reduce the difficulty of building a dam, cost, convenient construction.

Dam body 10 adopts the sand dam; Possess certain water permeability, therefore further, said dam body basis effluent bed is through excavation, smooth, compacting formation; The rainwater that infiltrates dam body 10 can further permeate the ground through the dam body basis; Through in time the dredging of rainwater, can effectively guarantee the drying on sand dam, guarantee the stability of dam body 10.

Impervious barrier 20 can adopt multiple structure, material to constitute, as pave on dam body 10 surfaces, earth blanket that compacting forms etc.In order to further facilitate construction; Reduce cost; Said impervious barrier 20 is made up of geomembrane and plastic sheeting; Wherein geomembrane in the outside of plastic sheeting, plastic sheeting between geomembrane and dam body 10, can effectively guarantee barrier performance through plastic sheeting and geomembrane, and geomembrane is arranged in the breakage that the outside of plastic sheeting can effectively avoid the use of the process plastic sheeting.

Same, said horizontal impervious layer 30 is made up of plastic sheeting.Construction for ease, in instance as shown in the figure, the both sides up and down that constitute the plastic sheeting of impervious barrier 20 are imbedded respectively in the dam body 10, are made up of the part of adjacent level impervious barrier 30 respectively the both sides up and down of plastic sheeting.During construction; Dam body 10 is successively constructed; When constructing certain layer of dam body 10; Make progress anti-package to this layer dam body 10 and this layer dam body 10 imbedded in the top of this plastic sheeting of the plastic sheeting that bottom is imbedded the dam body 10 of this layer dam body 10 lower floors, the bottom with a new plastic sheeting imbeds this layer dam body 10 simultaneously.Double-plastic can effectively guarantee the barrier performance of horizontal impervious layer 30, and the plastic sheeting anti-package can effectively improve the bulk strength of dam body 10 simultaneously, prevents to collapse, and guarantees that dam body 10 is stable.

The longitudinal pitch of horizontal impervious layer 30, insertion depth; Permeability, size and reservoir area amount of precipitation etc. with dam body 10 are relevant; In instance as shown in the figure; The height of dam of dam body 10 is that 20 meters, dam bottom width are that 35 meters, dam crest wide are that 5 meters, dam material are tailings, fill degree of compaction and be not less than 92% that the longitudinal pitch between said each horizontal impervious layer 30 is 2～3m, and said each horizontal impervious layer 30 is by dam body 10 face 11 5m that extends internally near water.

The counter dam structure mainly plays the effect of dash counter dam, can adopt multiple structure, and like concrete guard wall, along dam body 10 border on the river loose rock dam that face 12 builds by laying bricks or stones, sandbag etc., concrete can select according to the river water yield, water level etc.In instance as shown in the figure, said counter dam structure is a mortar flag stone barricade 40.

Above-mentioned is the side of dam body in the mine tailing Kuku near water, and bordering on the river is the side of dam body outside river also is the mine tailing Kuku.

Claims

1. be used for cutting the tailing dam in type mine tailing storehouse, river; Comprise the dam body basis and construct the dam body (10) on the dam body basis; It is characterized in that: said dam body (10) is the sand dam that is formed by the sand compacting; The face near water (11) of said dam body (10) is equipped with impervious barrier (20), and the border on the river outer setting of a side of said dam body (10) has the counter dam structure; Be provided with the one group of horizontal impervious layer (30) that embeds in the dam body (10); Each horizontal impervious layer (30) longitudinally from top to bottom is provided with at interval, each horizontal impervious layer (30) by dam body (10) near water face (11) in dam body (10), extend and extended distance less than dam body (10) width of correspondence position.

2. the tailing dam that is used for cutting type mine tailing storehouse, river as claimed in claim 1 is characterized in that: said dam body basis effluent bed is through excavation, smooth, compacting formation.

3. the tailing dam that is used for cutting type mine tailing storehouse, river as claimed in claim 1, it is characterized in that: said impervious barrier (20) is made up of geomembrane and plastic sheeting, and wherein the geomembrane outside, the plastic sheeting that are positioned at plastic sheeting is positioned between geomembrane and the dam body (10).

4. the tailing dam that is used for cutting type mine tailing storehouse, river as claimed in claim 3, it is characterized in that: said horizontal impervious layer (30) is made up of plastic sheeting.

5. the tailing dam that is used for cutting type mine tailing storehouse, river as claimed in claim 4; It is characterized in that: the both sides up and down that constitute the plastic sheeting of impervious barrier (20) are imbedded respectively in the dam body (10), are made up of the part of adjacent level impervious barrier (30) respectively the both sides up and down of plastic sheeting.

6. like claim 1,2,3, the 4 or 5 described tailing dams that are used for cutting type mine tailing storehouse, river, it is characterized in that: said counter dam structure is mortar flag stone barricade (40).