CN203383192U

CN203383192U - Dry-type discharging tailing sand foundation impervious dam structure

Info

Publication number: CN203383192U
Application number: CN201320340056.2U
Authority: CN
Inventors: 李荣海; 于克旭; 李海臣; 朱万刚; 张玉辉
Original assignee: Angang Group Mining Co Ltd
Current assignee: Angang Group Mining Co Ltd
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2014-01-08
Anticipated expiration: 2023-06-14

Abstract

The utility model relates to a dry-type discharging tailing sand foundation impervious dam structure which comprises an original tailing sand foundation and is characterized in that a rock discharging dam building main body is built on the original tailing sand foundation in a filling mode and is composed of a protection slope on the inner side of a dam body reservoir, an out-reservoir slope on the outer side of the dam body reservoir and a horizontal dam top. The protection slope is composed of an in-reservoir slope lower section, an in-reservoir slope upper section and a horizontal riding track arranged between the in-reservoir slope lower section and the in-reservoir slope upper section. The in-reservoir slope lower section is connected with a tailing sand operation pit slope, impervious bodies are laid on the upper surfaces of the protection slope on the inner side of the dam body reservoir and the tailing sand operation pit slope, and a tailing sand layer covers the impervious bodies. The structure has the advantages of being waterproof and sturdy, local rock discharging materials are fully utilized, dam building cost can be greatly reduced, and the benefit is considerable.

Description

The structure on waterproof dam, dry type tailing disposal sand basis

Technical field

The utility model belongs to the hydraulic engineering technical field, particularly the structure on waterproof dam, a kind of dry type tailing disposal sand basis.

Background technology

Tailings Dam refers to build a dam the interception mouth of a valley or exclosure formation, in order to store up metal or non-metal mine, carries out the place that ore sorts rear discharge mine tailing or other industrial residues.Existing Tailings Dam refers to the existing Tailings Dam formed.The tails dry discharge is the new Tailings Disposal new technology that recent year rises gradually, its rise is mainly that (the wet type discharge method is that mine tailing is under the slurry state because the existing Tailings Dam of each bargh adopts the wet type discharge method, by pipeline mine tailing from selecting factory to deliver to Tailings Dam, mine tailing in slurry passes through natural subsidence, be deposited in Tailings Dam, the water in slurry selects factory's recycling by naturally clarifying to return again; Adopt the tailings warehouse dam body of the method to be formed by initial dam and late dam, initial dam is to adopt piece stone to build the permeable dike formed, height is in 10-20 rice left and right, late dam adopts mine tailing to stack and forms, height can reach 100 meters,) storage capacity is full, reached the length of service, continues that discharge can't be caused.The wet type discharge is subject to the peripheral charge for remittance of water level and reservoir area in storehouse to adjust big vast needs, the maximum height that mine tailing is stacked is generally than the low 1-4 rice of dam body left and right, and above space is as the storage capacity of regulating and storing, to meet the safe operation needs, so below dam body top mark height, 1-4 rice is arranged, the storage capacity of 10-20% can not be used.Because tailing dam need account for tract, expropriation of land at present is not only very difficult, and invests huge in addition.

Summary of the invention

It is good that the purpose of this utility model is to provide a kind of water resistance, the structure on waterproof dam, the robust dry type tailing disposal of dam body sand basis, meeting the discharge of mine tailing wet type is about to expire, change in tails dry row situation, make dam structure waterproof, integral dam sedimentation, distortion and stability meet the demands.

The purpose of this utility model is achieved through the following technical solutions:

The structure on waterproof dam, dry type tailing disposal sand of the present utility model basis, comprise protocercal tail ore in sand form dam body foundation, it is characterized in that:

1) row's of filling rock main body of building a dam on the basis of described protocercal tail ore in sand form dam body, described row's rock main body of building a dam is comprised of slope and horizontal dam crest outside the storehouse in the protective slope of dam body inside-of-refrigerator, the outside, dam body storehouse, the protective slope of described dam body inside-of-refrigerator is stepped protective slope, and described stepped protective slope is by storehouse inner slope hypomere, storehouse inner slope epimere and formed with the horizontal packway that storehouse inner slope epimere is connected with described storehouse inner slope hypomere;

2) be provided with CHARACTERISTICS OF TAILINGS SAND operating pit slope in CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, described storehouse, this CHARACTERISTICS OF TAILINGS SAND operating pit slope and storehouse inner slope hypomere continue;

3) the upper surface paving at described CHARACTERISTICS OF TAILINGS SAND operating pit slope, storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere is respectively equipped with the antiseepage body of the high density polyethylene of each sticky one deck geotextiles of upper and lower surface that thickness is the 1-5 millimeter, and all covers one deck mine tailing layer of sand in the outside of described antiseepage body.

The height of described storehouse inner slope hypomere and storehouse inner slope epimere is respectively 6 meters-8 meters, gradient 1:1.75-1:2, and described horizontal width at dam crest is 5 meters-15 meters, outside the storehouse in the outside, described dam body storehouse, the gradient on slope is 1:1.5.

The CHARACTERISTICS OF TAILINGS SAND layer thickness covered on antiseepage body on described CHARACTERISTICS OF TAILINGS SAND operating pit slope is 0.8 meter-1.2 meters.

Covering the CHARACTERISTICS OF TAILINGS SAND layer thickness on the antiseepage body of described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere is 0.5 meter-1 meter.

The building method on dam, the utility model dry type tailing disposal sand basis, comprise the following steps:

1) at first on the basis of protocercal tail ore in sand form dam body, select the build a dam position of building by laying bricks or stones of main body of the row's of building rock, adopt the 0-350 millimeter stope barren rock row of filling rock on the basis of protocercal tail ore in sand form dam body main body of building a dam, and will arrange that rock builds a dam that the protection of building into the dam body inside-of-refrigerator by laying bricks or stones of main body is broken, slope and horizontal dam crest outside the storehouse outside the dam body storehouse;

2) protective slope of described dam body inside-of-refrigerator is built into by laying bricks or stones to storehouse inner slope hypomere, storehouse inner slope epimere and the horizontal packway be connected with storehouse inner slope epimere with storehouse inner slope hypomere, when the row's of filling rock is built a dam main body, often fill 0.5 meter-0.8 meter thick, dam body is rolled to 6-8 time with 15-20 ton vibrating roller, the barren rock dry density is controlled between 2.1-2.3g/cm3;

3) on CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, storehouse, from starting, digs ground line 5 meters-10 meters dark CHARACTERISTICS OF TAILINGS SAND operating pits, and formation and the storehouse inner slope hypomere CHARACTERISTICS OF TAILINGS SAND operating pit slope of continuing, its gradient is 1:1.75-1:2;

4) along CHARACTERISTICS OF TAILINGS SAND operating pit slope, the antiseepage body of the high density polyethylene of the upper surface laying depth of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere each the sticky one deck geotextiles of upper and lower surface that is the 1-5 millimeter,

5) will cover 0.8 meter-1.2 meters thick mine tailing layer of sand compacting on the antiseepage body of CHARACTERISTICS OF TAILINGS SAND operating pit, its coefficient of consolidation 0.85-0.93, and then by CHARACTERISTICS OF TAILINGS SAND, the CHARACTERISTICS OF TAILINGS SAND operating pit is filled and led up;

6) finally on the antiseepage body of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere, cover 0.5 meter-1 meter thick mine tailing layer of sand, complete building by laying bricks or stones of whole dry type tailing disposal sand dam, basis.

The utility model has the advantages that:

1) due to the utility model, be in the situation that the row's of filling rock main body of building a dam on the full basis high at protocercal tail ore in sand form dam body top mark of tailing dam storage capacity, at the dam body top mark, on high basis, continue to increase, effectively solved protocercal tail ore in sand form dam body 1-4 rice, the out of use problem of the storage capacity of 10-20%;

2) owing to having adopted dry type tailing disposal sand, a large amount of recirculated water in Tailings Slurry, before not entering Tailings Dam, return and select factory by water processing establishment, basically do not need to adjust flood, but and the 1.4-2 of final effective storage wet type discharge after the dry type discharge doubly;

3) because the row's of filling rock main body of building a dam has adopted double trapezoid stack shape, and be provided with the antiseepage body on anti-slope within it, not only meet the requirement of dam deformation, sedimentation, stability, and guaranteed that Tailings Dam is waterproof.

By this technology, can utilize existing Tailings Dam to prolong length of service, avoid again taking over the land for use, can greatly reduce the cost of building a dam, benefit is very considerable.

The accompanying drawing explanation

Fig. 1 is the structural representation on waterproof dam, the utility model dry type tailing disposal sand basis.

The specific embodiment

Below in conjunction with accompanying drawing, to of the present utility model, be described further.

As shown in Figure 1,

The structure on waterproof dam, dry type tailing disposal sand of the present utility model basis, comprise protocercal tail ore in sand form dam body foundation 11, it is characterized in that:

1) row's of filling rock main body 9 of building a dam on the basis of described protocercal tail ore in sand form dam body 11, the described row's rock protective slope of main body 9 by the dam body inside-of-refrigerator of building a dam, outside the storehouse in the outside, dam body storehouse, slope 10 and horizontal dam crest 8 form, the protective slope of described dam body inside-of-refrigerator is stepped protective slope, described stepped protective slope is by storehouse inner slope hypomere 2, storehouse inner slope epimere 6 forms with the horizontal packway 5 be connected with storehouse inner slope epimere 6 with described storehouse inner slope hypomere 2, the horizontal packway 5 arranged between storehouse inner slope hypomere 2 and storehouse inner slope epimere 6, not only facilitated construction, but also played the effect of stable dam body.

2) being provided with CHARACTERISTICS OF TAILINGS SAND operating pit slope 1 in described storehouse inner slope hypomere 2 CHARACTERISTICS OF TAILINGS SAND bases, underfooting, continues with storehouse inner slope hypomere 2 in this CHARACTERISTICS OF TAILINGS SAND operating pit slope 1; The arranging of its CHARACTERISTICS OF TAILINGS SAND operating pit slope 1 can make the row's of filling rock build a dam main body 9 and the good continued access of protocercal tail ore in sand form dam body 11, the build a dam requirement of stability of main body 9 of the row's of assurance rock.

3) the upper surface paving at described CHARACTERISTICS OF TAILINGS SAND operating pit slope 1, storehouse inner slope hypomere 2, horizontal packway 5 and storehouse inner slope epimere 6 is respectively equipped with the antiseepage body 3 of the high density polyethylene of each sticky one deck geotextiles 4 of upper and lower surface that thickness is the 1-5 millimeter, and all covers one deck mine tailing layer of sand 7 in the outside of described antiseepage body 3.The dam body waterproof effect of this structure is ideal, has formed firm waterproof construction.

Say further, the height of storehouse described in the utility model inner slope hypomere 2 and storehouse inner slope epimere 6 is respectively 6 meters-8 meters, gradient 1:1.75-1:2, above-mentioned storehouse inner slope epimere 6 can circulate and form many groups with storehouse inner slope hypomere 2 and horizontal packway 5, but overall height is no more than 50 meters, both the overall height of the 1:1.75 gradient must not surpass 40 meters, and 1:2 gradient overall height must not be over 50 meters.

Outside the storehouse in the outside, dam body described in the utility model storehouse 13, slope 11 gradients are 1:1.5, and described horizontal dam crest 8 width are 5 meters-15 meters.In order to protect the stability of dam body.

The CHARACTERISTICS OF TAILINGS SAND layer thickness covered on antiseepage body on CHARACTERISTICS OF TAILINGS SAND operating pit described in the utility model slope is 0.8 meter-1.2 meters.Covering the CHARACTERISTICS OF TAILINGS SAND layer thickness on the antiseepage body of described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere is 0.5 meter-1 meter.Be used for protecting the antiseepage body not expose.Label in figure 12 means the row of building rocks main body 9 inboards of building a dam, the 13 expression row of building rocks main body 9 outsides of building a dam.

Waterproof dam, dry type tailing disposal sand of the present utility model basis, can waterproof, very firm again, owing to taking full advantage of local row's rock material, can greatly reduce the cost of building a dam, and benefit is very considerable.

Claims

1. the structure on waterproof dam, a dry type tailing disposal sand basis, comprise protocercal tail ore in sand form dam body foundation, it is characterized in that:

2. the structure on the waterproof dam of dry type tailing disposal sand according to claim 1, the height that it is characterized in that described storehouse inner slope hypomere and storehouse inner slope epimere is respectively 6 meters-8 meters, gradient 1:1.75-1:2, described horizontal width at dam crest is 5 meters-15 meters, and outside the storehouse in the outside, described dam body storehouse, the gradient on slope is 1:1.5.

3. the structure on the waterproof dam of dry type tailing disposal sand according to claim 1, is characterized in that the CHARACTERISTICS OF TAILINGS SAND layer thickness covered on the antiseepage body on described CHARACTERISTICS OF TAILINGS SAND operating pit slope is 0.8 meter-1.2 meters.

4. the structure on the waterproof dam of dry type tailing disposal sand according to claim 1, is characterized in that covering the CHARACTERISTICS OF TAILINGS SAND layer thickness on the antiseepage body of described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere is 0.5 meter-1 meter.