CN114541340A

CN114541340A - One-time dam-building tailing pond flood drainage system

Info

Publication number: CN114541340A
Application number: CN202210248040.2A
Authority: CN
Inventors: 郑伟; 袁朝
Original assignee: China ENFI Engineering Corp
Current assignee: China ENFI Engineering Corp
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-05-27

Abstract

The invention discloses a flood drainage system for a tailing pond with a primary dam construction, which comprises a dam body, a flood spillway and a catch basin, wherein the dam body is suitable for being constructed on a mountain body of the tailing pond; the spillway is suitable for being arranged on a dam abutment on one side of the dam body, and the upstream of the spillway is communicated with a tailing reservoir area; the intercepting ditch is suitable for being arranged on a mountain of a tailing pond, the downstream of the spillway is communicated with the intercepting ditch, and at least part of the intercepting ditch is positioned at the downstream of the spillway. The spillway of the flood drainage system of the primary dam-building tailing pond is an open structure, is convenient to construct, has lower requirements relative to the geological conditions and the construction conditions of a foundation, is convenient to observe the running condition, is convenient to inspect and maintain in the using process, can be used as a permanent flood drainage system after the tailing pond is closed, has high reliability, and is convenient to inspect and maintain in the later period; the intercepting ditch and the spillway of the flood drainage system of the tailing pond with the primary dam construction are uniformly arranged, downstream facilities are shared, and investment is saved.

Description

Flood drainage system for tailing pond with dam built at one time

Technical Field

The invention relates to the technical field of tailing pond drainage equipment, in particular to a flood drainage system for a tailing pond with a dam built at one time.

Background

The tailing pond flood drainage system is an important safety facility of a tailing pond, and sufficient discharge capacity must be ensured to ensure the flood drainage within the corresponding design flood control standard of the tailing pond. In the correlation technique, tailing storehouse drainage flood form generally adopts drainage shaft (chute) -drain pipe (tunnel), but drainage shaft (chute) -drain pipe (tunnel) formula drainage flood system receives the influence of topography geological conditions, and the construction degree of difficulty is big, easily takes place the incident in the work progress, and drainage shaft (chute) -drain pipe (tunnel) formula drainage flood system mostly belongs to concealed engineering, need patrol and examine at any time during the operation, and the personnel's operating condition that patrol and examine is poor, and the operation conditions also should not observe.

Disclosure of Invention

The present invention is directed to solving, at least in part, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a one-time dam-building tailing pond flood discharging system which is easy to implement and convenient to inspect and maintain.

The flood drainage system for the tailings pond with the dam built once comprises a dam body, a flood spillway and a cut-off ditch, wherein the dam body is suitable for being built on a mountain of the tailings pond; the spillway is suitable for being arranged on a dam abutment on one side of the dam body, and the upstream of the spillway is communicated with a tailing reservoir area; the intercepting ditch is suitable for being arranged on a mountain of a tailing pond, the downstream of the spillway is communicated with the intercepting ditch, and at least part of the intercepting ditch is positioned at the downstream of the spillway.

The spillway of the flood drainage system of the tailing pond with the dam built once is an open structure, so that the construction is convenient, the requirements on geological conditions and construction conditions of a foundation are lower, the operation condition is convenient to observe, the inspection and maintenance in the use process are convenient, the tailing pond can be used as a permanent flood drainage system after being closed, the reliability is high, and the inspection and maintenance in the later period are convenient; the intercepting ditch and the spillway of the flood drainage system of the tailing pond with the primary dam construction are uniformly arranged, downstream facilities are shared, and investment is saved.

In some embodiments, the spillway comprises a catchment section upstream of and in communication with the chute, and a chute, the catchment section in communication with a tailings pond area.

In some embodiments, the cross-sectional area of the water-diverting section is greater than the cross-sectional area of the chute.

In some embodiments, the spillway further comprises a first stilling pool located downstream of the chute, and two ends of the first stilling pool are respectively communicated with the chute and the intercepting ditch. Therefore, in the embodiments, the flood drainage system for the tailing pond with the once dam building provided by the embodiment of the invention can dissipate the energy of the water flow flowing to the intercepting ditch from the discharge chute through the arrangement of the first stilling basin, so that the fast flow of the downward discharge is changed into slow flow, and the length of the apron can be shortened.

In some embodiments, the spillway further comprises a weir located at the inlet of the water-diverting section. Therefore, in the embodiments, the flood discharge system for the tailings pond with the primary dam construction provided by the embodiment of the invention reduces the influence of the water flow in the tailings pond area on the water flow in the spillway through the arrangement of the overflow weir.

In some embodiments, there are a plurality of dams, and the heights of the tops of the dams are sequentially increased.

In some embodiments, there are a plurality of spillways, and the spillways correspond to the dams in a one-to-one manner.

In some embodiments, the spillways are located on the same side of the dam. Therefore, in the embodiments, the spillway of the flood drainage system of the tailings pond with the primary dam construction of the embodiment of the invention can be built and heightened step by step along with the step construction of the dam body to be built and constructed in a matched manner step by step, and after the dam body is heightened and the spillway in the next stage is put into use, the spillway system in the previous stage is plugged and backfilled, so that the operation is flexible.

In some embodiments, the berm includes a tailrace and a steep trough, the tailrace being downstream of the berm; the steep groove is located the upper reaches of tailrace, the steep groove is a plurality of, and is a plurality of the steep groove is with a plurality of spillway one-to-one ground intercommunication, the steep groove be located rather than corresponding the low reaches of spillway.

In some embodiments, the catch basin further comprises a second stilling pool located downstream of the steep groove, and both ends of the second stilling pool are respectively communicated with the steep groove and the tail channel. Therefore, in the embodiments, the flood drainage system for the primary dam-building tailing pond provided by the embodiment of the invention can be used for dissipating energy of water flow flowing from the steep groove to the tail canal through the arrangement of the second stilling pool, so that the fast flow of the downward drainage is rapidly changed into slow flow, and the length of the apron can be shortened.

Drawings

Fig. 1 is a schematic view of a flood discharge system for a tailing pond with a dam built once according to an embodiment of the invention.

Fig. 2 is a partially enlarged view a of fig. 1.

Fig. 3 is a schematic view of a related art chute-drain type flood discharge system.

Fig. 4 is a schematic view of a drainage shaft-tunnel type flood discharge system of the related art.

Reference numerals: a dam body 10, a first-stage dam body 11, a second-stage dam body 12, a third-stage dam body 13, a fourth-stage dam body 14,

the area of the tailings pond 20 is the area of the tailings pond,

chute 31, drain pipe 32, drain well 33, tunnel 34,

a spillway 40, a first stage spillway 401, a second stage spillway 402, a third stage spillway 403, a fourth stage spillway 404, a diversion section 41, a chute 42, a first stilling basin 43,

a catch basin 50, a tail canal 51, a steep groove 52 and a second stilling basin 53.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The flood drainage system for the tailings pond with the primary dam construction according to the embodiment of the invention is described below with reference to the attached drawings.

As shown in fig. 1 and 2, the flood discharging system for tailings ponds with once dam construction according to the embodiment of the present invention includes a dam body 10, a spillway 40 and a cut-off trench 50.

Wherein the dam body 10 is suitable for being built on a mountain of a tailing pond; the spillway 40 is suitable for being arranged on a dam abutment at one side of the dam body 10, the spillway 40 is an open channel, and the upstream of the spillway 40 is communicated with the tailing pond area 20; the intercepting drain 50 is suitable for being opened on the mountain body of the tailings pond, the intercepting drain 50 is opened on the periphery of the tailings pond area 20, the downstream of the spillway 40 is communicated with the intercepting drain 50, and at least part of the intercepting drain 50 is positioned at the downstream of the spillway 40. It should be noted that the water in the tailing pond area 20 flows into the upstream of the spillway 40 and flows along the spillway 40 to the downstream of the spillway 40, and then the water in the spillway 40 flows into the downstream of the intercepting ditch 50 to complete flood drainage, that is, the direction of the water flow is: the tailings pond area 20-the upstream of the spillway 40-the downstream of the catch basin.

The spillway of the flood drainage system of the primary dam-building tailing pond is an open structure, is convenient to construct, has lower requirements relative to the geological conditions and the construction conditions of a foundation, is convenient to observe the running condition, is convenient to inspect and maintain in the using process, can be used as a permanent flood drainage system after the tailing pond is closed, has high reliability, and is convenient to inspect and maintain in the later period; the intercepting ditch and the spillway of the drainage system of the tailing pond with the dam built once are uniformly arranged, downstream facilities are shared, and investment is saved.

As shown in fig. 2, in some embodiments, the spillway 40 includes a diversion section 41 and a chute 42, the diversion section 41 being located upstream of the chute 42 and communicating with the chute 42, the diversion section 41 communicating with the tailings pond area 20, the diversion section 41 being for diverting water in the tailings pond area 20 into the chute 42.

In some embodiments, the cross-sectional area of the inducer section 41 is greater than the cross-sectional area of the chute 42.

As shown in fig. 2, in some embodiments, the spillway 40 further comprises a first stilling pool 43, the first stilling pool 43 is located downstream of the chute 42, and both ends of the first stilling pool 43 are respectively communicated with the chute 42 and the intercepting ditch 50. According to the flood drainage system for the tailing pond with the dam built once, disclosed by the embodiment of the invention, through the arrangement of the first stilling pool 43, the energy of the water flow flowing to the intercepting ditch 50 from the discharge groove 42 is dissipated, so that the fast flow of the downward discharge is rapidly changed into slow flow, and the length of the apron can be shortened.

In some embodiments, spillway 40 also includes a weir located at the inlet of the water diverting section 41. According to the flood drainage system for the tailing pond with the primary dam building, disclosed by the embodiment of the invention, the influence of water flow in the area of the tailing pond on water flow in a spillway is reduced through the arrangement of the overflow weir.

In some embodiments, there are multiple dams 10, and the heights of the top of the dams 10 are sequentially increased.

Further, there are a plurality of spillways 40, and the spillways 40 correspond to the dams 10 one by one.

Further, a plurality of spillways 40 are located on the same side of the dam 10.

The spillway of the drainage system of the tailings pond with the primary dam construction of the embodiment of the invention can be built and heightened stage by stage along with the step-by-stage construction of the dam body to be built and constructed in a matched manner stage by stage, and after the dam body at the next stage is heightened and the spillway at the next stage is put into use, the spillway system at the previous stage is plugged and backfilled, so that the operation is flexible.

As shown in fig. 1, in some embodiments, the berm 50 includes an aft channel 51 and a steep trough 52, the aft channel 51 being located downstream of the berm 50; the steep grooves 52 are located at the upstream of the tail canal 51, the steep grooves 52 are multiple, the steep grooves 52 are communicated with the spillway passages 40 in a one-to-one correspondence manner, and the steep grooves 52 are located at the downstream of the spillway passages 40 corresponding to the steep grooves 52. It should be noted that the water in the spillway 40 flows into the steep groove 52 along the spillway 40, and the water in the steep groove 52 continues to flow downstream along the catch basin 50 until entering the tailrace 51, thereby completing the flood drainage.

As shown in fig. 1, in some embodiments, the catch basin 50 further includes a second stilling pool 53, the second stilling pool 53 is located downstream of the steep trough 52, and both ends of the second stilling pool 53 are respectively communicated with the steep trough 52 and the tail channel 51. According to the flood drainage system for the primary dam-building tailing pond, disclosed by the embodiment of the invention, through the arrangement of the second stilling basin, the energy of water flow flowing to the tail canal from the steep groove is dissipated, so that the fast flow of the drainage is rapidly changed into slow flow, and the length of the apron can be shortened.

As shown in fig. 1 and 2, in a specific embodiment, the dam 10 is constructed by once-construction and by stages, the total dam height is 75m, and the final stage dam crest elevation is 230m, and according to the process requirements, the dam 10 is divided into a first-stage dam 11, a second-stage dam 12, a third-stage dam 13 and a fourth-stage dam 14 for heap construction, the first-stage dam crest elevation is 200m, the second-stage dam crest elevation is 210m, the third-stage dam crest elevation is 220m, and the final-stage dam crest elevation is 230 m.

The flood control standard of the tailing pond is considered in the case of flood in 1000 years, a matched flood discharge system adopts a dam abutment open type spillway type, the spillway 40 is divided into a first-stage spillway 401, a second-stage spillway 402, a third-stage spillway 403 and a fourth-stage spillway 404 along with the stacking of a dam body 10, the spillway 40 and the intercepting ditch 50 are arranged in the same way, and the integral arrangement adopts a water diversion section 41-a discharge groove 42-a first stilling pool 43-a steep groove 52-a second stilling pool 53-a tail canal 51.

The water diversion section 41 has a rectangular cross section with a size of 10m × 2.5m and a length of 10 m. The weir top of the overflow weir 0 arranged at the inlet of the water diversion section 41 has the overflow length of 10m, the weir height of 0.5m and the top width of 2 m. The chute 42 has a rectangular cross section with dimensions of 4m × 2m and a total length of 150 m. The steep groove 52 has a rectangular cross section with dimensions of 2m × 2m and a total length of 220 m. The first stilling pool 43 and the second stilling pool 53 are 15m long, 5m wide and 3m deep. The tail canal adopts a rectangular section, the size is 3m multiplied by 2m, and the length is 50 m.

The spillway 40 is built in a matching way from stage to stage along with the staged building and heightening of the dam body 10, and after the dam body 10 at the next stage is heightened and the spillway 40 at the next stage is put into use, the spillway 40 at the previous stage is plugged and backfilled. The structures of the water diversion section 41, the overflow weir and the chute 42 of the later stage spillway 40 are the same as those of the water diversion section 41, the overflow weir and the chute 42 of the first stage spillway 401, and the steep groove 52 newly added in each later stage is communicated with the steep groove 52 of the first stage spillway 401. The inflow height of the first-stage spillway 401 is 198m, the inflow height of the second-stage spillway 402 is 208m, and the length of the newly added spillway is 85 m; the inflow height of the third-stage spillway 403 is 218m, and the length of the newly added spillway is 45 m; the inflow height of the spillway 404 in the fourth stage is 228m, and the length of the spillway is increased by 20 m.

The flood discharge system for the tailing pond with the primary dam construction provided by the embodiment of the invention adopts the continuous spillway to discharge flood, the spillway can be built in stages along with the stage increase of the dam body, and the spillway is used as an open structure, is easy to implement, has lower requirements on the geological conditions and the construction conditions of the foundation, is convenient to observe the operation condition, is convenient to inspect and maintain in the using process, can be used as a permanent flood discharge system after closing the dam, has high reliability and is also convenient to inspect and maintain in the later stage.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a once build dam tailing storehouse flood discharge system which characterized in that includes:

the dam body is suitable for being built on a mountain of a tailing pond;

the spillway is suitable for being arranged on a dam abutment on one side of the dam body, and the upstream of the spillway is communicated with a tailing reservoir area;

the intercepting ditch is suitable for being arranged on a mountain of a tailings pond, the downstream of the spillway is communicated with the intercepting ditch, and at least part of the intercepting ditch is positioned at the downstream of the spillway.

2. The primary dam tailings pond flood discharge system of claim 1 wherein the spillway comprises a diversion section and a chute, the diversion section being upstream of and in communication with the chute, the diversion section being in communication with a tailings pond area.

3. The system of claim 2, wherein the cross-sectional area of the diversion section is greater than the cross-sectional area of the chute.

4. The primary dam construction tailings pond flood discharge system according to claim 2, wherein the spillway further comprises a first stilling pool, the first stilling pool is located at the downstream of the chute, and two ends of the first stilling pool are respectively communicated with the chute and the intercepting ditch.

5. The primary dam tailings pond flood discharge system of claim 2, wherein the spillway further comprises a weir located at the inlet of the water diversion section.

6. The system for discharging flood of the tailings pond with the once-built dam according to claim 1, wherein the dam body is provided with a plurality of dam bodies, and the elevation of the top of each dam body is gradually increased.

7. The system of claim 6, wherein the spillway comprises a plurality of spillways, and the plurality of spillways corresponds to the plurality of dams one-to-one.

8. The primary dam tailings pond flood discharge system of claim 7, wherein a plurality of the spillways are located on the same side of the dam body.

9. The primary dam tailings pond flood discharge system of claim 7, wherein the catch basin comprises:

a tailrace located downstream of the berm;

steep groove, steep groove is located the upper reaches of tailrace, steep groove is a plurality of, and is a plurality of steep groove is with a plurality of spillway one-to-one ground intercommunication, steep groove is located rather than corresponding spillway's low reaches.

10. The primary dam tailings pond flood discharge system of claim 9, wherein the cut-off trench further comprises a second stilling pool located downstream of the steep trough, both ends of the second stilling pool being in communication with the steep trough and the tailrace, respectively.