CN103306240B - Structure and constructing method of impermeable dam provided with dry type tailing sand discharging base - Google Patents
Structure and constructing method of impermeable dam provided with dry type tailing sand discharging base Download PDFInfo
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- CN103306240B CN103306240B CN201310235091.2A CN201310235091A CN103306240B CN 103306240 B CN103306240 B CN 103306240B CN 201310235091 A CN201310235091 A CN 201310235091A CN 103306240 B CN103306240 B CN 103306240B
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Abstract
The invention relates to a structure and a constructing method of an impermeable dam provided with a dry type tailing sand discharging base. The structure comprises an original tailing sand base, and is characterized in that a rock-dumping and damming body is filled on the original tailing sand base and comprises a protective slope on the inner side of a dam body reservoir, an outer reservoir slope on the outside of the dam body reservoir and a horizontal dam crest, wherein the protective slope comprises an inner protective slope lower segment, an inner protective slope upper segment and a horizontal bench arranged between the inner protective slope lower segment and the inner protective slope upper segment; the inner protective slope lower segment is connected with a tailing sand operating pit slope; and impermeable elements are laid on the protective slope on the inner side of the dam body reservoir and the tailing sand operating pit slope and covered with tailing sand layers. The structure and the constructing method have the advantages as follows: the impermeable dam provided with the dry type tailing sand discharging base and the structure is adopted, so that the structure is waterproof and firm; and local rock-dumping materials are fully utilized, so that the damming cost can be greatly reduced and the benefit is very considerable.
Description
Technical field
The invention belongs to hydraulic engineering technical field, particularly the structure on waterproof dam, a kind of dry type tailing disposal sand basis and building method.
Background technology
Tailings Dam refers to what build a dam the interception mouth of a valley or exclosure were formed, 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.Tails dry discharge is the new Tailings Disposal new technology of recent year one of rising gradually, mainly because the existing Tailings Dam of each bargh adopts wet type discharge method, (wet type discharge method is that mine tailing is under slurry state in its rise, by pipeline, mine tailing is delivered to Tailings Dam from selecting factory, mine tailing in slurry passes through natural subsidence, be deposited in Tailings Dam, the water in slurry selects factory to reuse by naturally clarifying to return again; The tailings warehouse dam body of the method is adopted to be made up of initial dam and late dam, initial dam is the permeable dike adopting block stone to build, height is about 10-20 rice, late dam adopts mine tailing to stack and forms, height can reach 100 meters,) storage capacity is full, reaches the length of service, continues that discharge cannot carry out causing.The needs of flood are adjusted in wet type discharge by water level in storehouse and reservoir area periphery charge for remittance, the maximum height that mine tailing is stacked generally than about the low 1-4 rice of dam body, above space as storage capacity of regulating and storing, to meet safe operation needs, so have 1-4 rice below dam body top mark height, the storage capacity of 10-20% can not use.In addition because tailing dam need account for tract, expropriation of land is at present not only very difficult, and invests huge.
Summary of the invention
The object of this invention is to provide a kind of water resistance good, the structure on waterproof dam, dam body robust dry type tailing disposal sand basis, meet the discharge of mine tailing wet type to be about to expire, under changing tails dry row situation into, make dam structure waterproof, integral dam sedimentation, distortion and stability meet the demands.
Another object of the present invention is to provide the building method of the structure on waterproof dam, a kind of dry type tailing disposal sand basis.
The object of the invention is to be achieved through the following technical solutions:
The structure on waterproof dam, dry type tailing disposal sand basis of the present invention, comprises protocercal tail ore in sand form dam body foundation, it is characterized in that:
1) on the basis of described protocercal tail ore in sand form dam body, the row's of filling rock is built a dam main body, described row's rock main body of building a dam is made up of slope and horizontal dam crest outside the storehouse outside the protective slope of dam body inside-of-refrigerator, dam body storehouse, the protective slope of described dam body inside-of-refrigerator is stepped protective slope, and described stepped protective slope is made up of storehouse inner slope hypomere, storehouse inner slope epimere and the horizontal packway that is connected with described storehouse inner slope hypomere and storehouse inner slope epimere;
2) in described CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, storehouse, be provided with CHARACTERISTICS OF TAILINGS SAND operating pit slope, this CHARACTERISTICS OF TAILINGS SAND operating pit slope and storehouse inner slope hypomere continue;
3) on described CHARACTERISTICS OF TAILINGS SAND operating pit slope, the upper surface of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere lays the impervious body of high density polyethylene respectively, the each sticky one deck geotextiles in the upper and lower surface of described impervious body, the thickness of described impervious body is 1-5 millimeter.
The height of described storehouse inner slope hypomere is 6 meters-8 meters, gradient 1:1.75-1:2, the height of described storehouse inner slope epimere is 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 outside described dam body storehouse, the gradient on slope is 1:1.5.
The CHARACTERISTICS OF TAILINGS SAND layer thickness that impervious body on described CHARACTERISTICS OF TAILINGS SAND operating pit slope covers is 0.8 meter-1.2 meters.
It is 0.5 meter-1 meter that the impervious body of described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere covers CHARACTERISTICS OF TAILINGS SAND layer thickness.
The building method on dam, dry type tailing disposal sand basis, is characterized in that comprising the following steps:
1) that on the basis of protocercal tail ore in sand form dam body, first selects the row of building rock to build a dam main body builds position by laying bricks or stones, the 0-350 millimeter stope barren rock row of filling rock on the basis of protocercal tail ore in sand form dam body is adopted to build a dam main body, and slope and horizontal dam crest outside storehouse by arranging that rock builds a dam that the protection that main body builds into dam body inside-of-refrigerator by laying bricks or stones is broken, outside dam body storehouse;
2) protective slope of described dam body inside-of-refrigerator is built into by laying bricks or stones storehouse inner slope hypomere, storehouse inner slope epimere and the horizontal packway that is connected with storehouse inner slope hypomere and storehouse inner slope epimere, the row's of filling rock build a dam main body time, often fill 0.5 meter-0.8 meter thick, with 15-20 ton vibrating roller, dam body is rolled 6-8 time, barren rock dry density controls at 2.1-2.3g/cm
3between;
3) on CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, storehouse, dig 5 meters-10 meters dark CHARACTERISTICS OF TAILINGS SAND operating pits under from ground line, and form the CHARACTERISTICS OF TAILINGS SAND operating pit slope of continuing with storehouse inner slope hypomere, its gradient is 1:1.75-1:2;
4) along CHARACTERISTICS OF TAILINGS SAND operating pit slope, the upper surface of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere lays the impervious body of high density polyethylene respectively, the each sticky one deck geotextiles in the upper and lower surface of described impervious body, the thickness of described impervious body is 1-5 millimeter;
5) cover 0.8 meter-1.2 meters thick mine tailing layers of sand and compacting by the impervious body of CHARACTERISTICS OF TAILINGS SAND operating pit, its coefficient of consolidation is 0.85-0.93, and then is filled and led up by CHARACTERISTICS OF TAILINGS SAND operating pit by CHARACTERISTICS OF TAILINGS SAND;
6) the last mine tailing layer of sand that covering 0.5 meter-1 meter is thick on the impervious body of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere, namely completes building by laying bricks or stones of whole dry type tailing disposal sand dam, basis.
Advantage of the present invention is:
1) because the present invention is that on the basis that protocercal tail ore in sand form dam body top mark is high, the row's of filling rock is built a dam main body when tailing dam storage capacity is full, the basis that dam body top mark is high continues to increase, efficiently solve protocercal tail ore in sand form dam body 1-4 rice, the non-serviceable problem of storage capacity of 10-20%.
2) owing to have employed dry type tailing disposal sand, recirculated water a large amount of in Tailings Slurry, before not entering Tailings Dam, returned by water processing establishment and selected factory, substantially do not needed to adjust flood, but and dry type discharges the 1.4-2 of rear final effective storage wet type discharge doubly.
3) because the row's of filling rock main body of building a dam have employed double trapezoid superposition shape, and anti-slope is provided with impervious body within it, not only meets the requirement of dam deformation, sedimentation, stability, and ensure that Tailings Dam is waterproof.
Existing Tailings Dam can be utilized to prolong length of service by this technology, avoid again taking over the land for use, greatly can reduce cost of building a dam, benefit is very considerable.
Accompanying drawing explanation
Fig. 1 is the structural representation on waterproof dam, dry type tailing disposal sand of the present invention basis.
Detailed description of the invention
Be described further of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1,
The structure on waterproof dam, dry type tailing disposal sand basis of the present invention, comprises protocercal tail ore in sand form dam body foundation 11, it is characterized in that:
1) on the basis of described protocercal tail ore in sand form dam body 11, the row's of filling rock is built a dam main body 9, described row's rock is built a dam the protective slope of main body 9 by dam body inside-of-refrigerator, outside storehouse outside dam body storehouse, slope 10 and horizontal dam crest 8 formed, 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 and the horizontal packway 5 be connected with described storehouse inner slope hypomere 2 and storehouse inner slope epimere 6 formed, the horizontal packway 5 arranged between storehouse inner slope hypomere 2 and storehouse inner slope epimere 6, not only facilitate construction, but also serve the effect of stable dam body.
2) in described CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere 2 underfooting, storehouse, being provided with CHARACTERISTICS OF TAILINGS SAND operating pit slope 1, 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, and the row's of guarantee rock is built a dam the requirement of stability of main body 9.
3) on described CHARACTERISTICS OF TAILINGS SAND operating pit slope 1, the upper surface of storehouse inner slope hypomere 2, horizontal packway 5 and storehouse inner slope epimere 6 lays the impervious body 3 of high density polyethylene respectively, impervious body 3 thickness described in each sticky one deck geotextiles 4 in the described upper and lower surface of impervious body 3 is 1-5 millimeter, and all covers one deck mine tailing layer of sand 7 in the outside of described impervious body 3.The dam body waterproof effect of this structure is ideal, defines firm waterproof construction.
Say further, the height of storehouse of the present invention inner slope hypomere 2 is 6 meters-8 meters, gradient 1:1.75-1:2, the height of storehouse inner slope epimere 6 is 6 meters-8 meters, gradient 1:1.75-1:2, above-mentioned storehouse inner slope epimere 6 can circulate with storehouse inner slope hypomere 2 and horizontal packway 5 and form many groups, but overall height is no more than 50 meters, both the overall height of the 1:1.75 gradient must not more than 40 meters, and 1:2 gradient overall height must not more than 50 meters.
Outside storehouse outside dam body storehouse of the present invention, slope 10 gradient is 1:1.5, and described horizontal dam crest 8 width is 5 meters-15 meters.In order to protect the stability of dam body.
The CHARACTERISTICS OF TAILINGS SAND layer thickness that impervious body on CHARACTERISTICS OF TAILINGS SAND operating pit slope of the present invention covers is 0.8 meter-1.2 meters.It is 0.5 meter-1 meter that the impervious body of described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere covers CHARACTERISTICS OF TAILINGS SAND layer thickness.Be used for protecting impervious body not expose.Label 12 expression row rock in figure is built a dam inside main body 9, and 13 expression row rocks are built a dam outside main body 9.
The building method on dam, dry type tailing disposal sand basis of the present invention, is characterized in that comprising the following steps:
1) that on the basis of protocercal tail ore in sand form dam body 11, first selects the row of building rock to build a dam main body 9 builds position by laying bricks or stones, the 0-350 millimeter stope barren rock row of filling rock on the basis of protocercal tail ore in sand form dam body 11 is adopted to build a dam main body 9, and slope 10 and horizontal dam crest 8 outside storehouse by arranging that rock builds a dam that the protection of building into dam body inside-of-refrigerator by laying bricks or stones of main body 9 is broken, outside dam body storehouse;
2) protective slope of described dam body inside-of-refrigerator is built into by laying bricks or stones the stepped protective slope be made up of storehouse inner slope hypomere 2, storehouse inner slope epimere 6 and the horizontal packway 5 that is connected with described storehouse inner slope hypomere 2 and storehouse inner slope epimere 6, the row's of filling rock build a dam main body 9 time, often fill 0.5 meter-0.8 meter thick, with 15-20 ton vibrating roller, dam body is rolled 6-8 time, barren rock dry density controls at 2.1-2.3g/cm
3between;
3) on CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere 2 underfooting, storehouse, dig 5 meters-10 meters dark CHARACTERISTICS OF TAILINGS SAND operating pits 1 under from ground line, and form the CHARACTERISTICS OF TAILINGS SAND operating pit slope of continuing with storehouse inner slope hypomere 2, its gradient is 1:1.75-1:2;
4) along CHARACTERISTICS OF TAILINGS SAND operating pit slope 1, the upper surface of storehouse inner slope hypomere 2, horizontal packway 5 and storehouse inner slope epimere 6 lays the impervious body 3 of high density polyethylene respectively, impervious body 3 thickness described in each sticky one deck geotextiles 4 in the described upper and lower surface of impervious body 3 is 1-5 millimeter, and the antiseepage of this impervious body is very good;
5) by mine tailing layer of sand 7 thick for covering 0.8 meter-1.2 meters on the impervious body of CHARACTERISTICS OF TAILINGS SAND operating pit also compacting, its coefficient of consolidation is 0.85-0.93, and then is filled and led up by CHARACTERISTICS OF TAILINGS SAND operating pit by CHARACTERISTICS OF TAILINGS SAND;
6) the last mine tailing layer of sand 7 that covering 0.5 meter-1 meter is thick on the impervious body of storehouse inner slope hypomere 2, horizontal packway 5 and storehouse inner slope epimere 6, namely completes building by laying bricks or stones of whole dry type tailing disposal sand dam, basis.
The impervious body 3 of high density polyethylene of the present invention defines firm waterproof construction with the mine tailing layer of sand 7 being laid on its upper surface, reaches the fluid-tight object of dam body.
Waterproof dam, dry type tailing disposal sand of the present invention basis, can waterproof, and very firm again, owing to making full use of local row's rock material, greatly can reduce cost of building a dam, benefit is very considerable.
Claims (5)
1. the structure on waterproof dam, dry type tailing disposal sand basis, comprises protocercal tail ore in sand form dam body foundation, it is characterized in that:
1) on the basis of described protocercal tail ore in sand form dam body, the row's of filling rock is built a dam main body, described row's rock main body of building a dam is made up of slope and horizontal dam crest outside the storehouse outside the protective slope of dam body inside-of-refrigerator, dam body storehouse, the protective slope of described dam body inside-of-refrigerator is stepped protective slope, and described stepped protective slope is made up of storehouse inner slope hypomere, storehouse inner slope epimere and the horizontal packway that is connected with described storehouse inner slope hypomere and storehouse inner slope epimere;
2) in described CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, storehouse, be provided with CHARACTERISTICS OF TAILINGS SAND operating pit slope, this CHARACTERISTICS OF TAILINGS SAND operating pit slope and storehouse inner slope hypomere continue;
3) on described CHARACTERISTICS OF TAILINGS SAND operating pit slope, the upper surface of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere lays the impervious body of high density polyethylene respectively, the each sticky one deck geotextiles in the upper and lower surface of described impervious body, the thickness of described impervious body is 1-5 millimeter, and all covers one deck mine tailing layer of sand in the outside of described impervious body.
2. the structure on waterproof dam, dry type tailing disposal sand basis according to claim 1, the height that it is characterized in that described storehouse inner slope hypomere is 6 meters-8 meters, gradient 1:1.75-1:2, the height of described storehouse inner slope epimere is 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 outside described dam body storehouse, the gradient on slope is 1:1.5.
3. the structure on waterproof dam, dry type tailing disposal sand basis according to claim 1, is characterized in that the CHARACTERISTICS OF TAILINGS SAND layer thickness that the impervious body on described CHARACTERISTICS OF TAILINGS SAND operating pit slope covers is 0.8 meter-1.2 meters.
4. the structure on waterproof dam, dry type tailing disposal sand according to claim 1 basis, it is 0.5 meter-1 meter that the impervious body that it is characterized in that described storehouse inner slope hypomere, horizontal packway, storehouse inner slope epimere covers CHARACTERISTICS OF TAILINGS SAND layer thickness.
5. the building method of the structure on waterproof dam, any one dry type tailing disposal sand basis in claim 1-4, is characterized in that comprising the following steps:
1) first on the basis of protocercal tail ore in sand form dam body the row's of selection rock build a dam main body build position by laying bricks or stones, adopt the 0-350 millimeter stope barren rock row of filling rock on the basis of protocercal tail ore in sand form dam body to build a dam main body, and to build a dam arranging rock slope and horizontal dam crest outside storehouse that main body builds by laying bricks or stones into outside the protective slope of dam body inside-of-refrigerator, dam body storehouse;
2) protective slope of described dam body inside-of-refrigerator is built into by laying bricks or stones the stepped protective slope be made up of storehouse inner slope hypomere, storehouse inner slope epimere and the horizontal packway that is connected with storehouse inner slope hypomere and storehouse inner slope epimere, the row's of filling rock build a dam main body time, often fill 0.5 meter-0.8 meter thick, with 15-20 ton vibrating roller, dam body is rolled 6-8 time, barren rock dry density controls at 2.1-2.3g/cm
3between;
3) on CHARACTERISTICS OF TAILINGS SAND basis, inner slope hypomere underfooting, storehouse, dig 5 meters-10 meters dark CHARACTERISTICS OF TAILINGS SAND operating pits under from ground line, and form the CHARACTERISTICS OF TAILINGS SAND operating pit slope of continuing with storehouse inner slope hypomere, its gradient is 1:1.75-1:2;
4) along CHARACTERISTICS OF TAILINGS SAND operating pit slope, the upper surface of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere lays the impervious body of high density polyethylene respectively, the each sticky one deck geotextiles in the upper and lower surface of described impervious body, the thickness of described impervious body is 1-5 millimeter;
5) cover 0.8 meter-1.2 meters thick mine tailing layers of sand and compacting by the impervious body of CHARACTERISTICS OF TAILINGS SAND operating pit, its coefficient of consolidation is 0.85-0.93, and then is filled and led up by CHARACTERISTICS OF TAILINGS SAND operating pit by CHARACTERISTICS OF TAILINGS SAND;
6) the last mine tailing layer of sand that covering 0.5 meter-1 meter is thick on the impervious body of storehouse inner slope hypomere, horizontal packway and storehouse inner slope epimere, namely completes building by laying bricks or stones of whole dry type tailing disposal sand waterproof dam, basis.
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| CN201310235091.2A CN103306240B (en) | 2013-06-14 | 2013-06-14 | Structure and constructing method of impermeable dam provided with dry type tailing sand discharging base |
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| CN103306240B true CN103306240B (en) | 2015-04-01 |
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| CN105780723B (en) * | 2015-05-06 | 2017-09-19 | 华北水利水电大学 | A kind of flood storage formula ecological embankment |
| CN104846779A (en) * | 2015-05-22 | 2015-08-19 | 辽宁工程技术大学 | Method for heaping up waterproof tailings pond dam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2105840C1 (en) * | 1996-04-05 | 1998-02-27 | Анатолий Васильевич Филатов | Method for building-up of tailing dump |
| CN101632993B (en) * | 2008-07-22 | 2012-03-07 | 鞍钢集团矿业公司 | Method for building tailings dam through adoption of mine dumping |
| CN101929161B (en) * | 2009-06-24 | 2011-08-31 | 鞍钢集团矿业公司 | Method for building high roller compaction water-permeable tailing dam by rock dumping |
| CN101929160B (en) * | 2009-06-24 | 2012-05-23 | 鞍钢集团矿业公司 | Method for building impermeable tailings dams with high scattered piles by waste rocks |
| KR101281990B1 (en) * | 2010-10-12 | 2013-07-03 | 한국건설기술연구원 | Maintenance structure for dam and reservoir strucrute using the same |
| CN202273236U (en) * | 2011-10-28 | 2012-06-13 | 长沙有色冶金设计研究院有限公司 | Inner dams in karst reservoir |
| CN203383192U (en) * | 2013-06-14 | 2014-01-08 | 鞍钢集团矿业公司 | Dry-type discharging tailing sand foundation impervious dam structure |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |