CN219196224U - Dam downstream infiltration recovery facility - Google Patents
Dam downstream infiltration recovery facility Download PDFInfo
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- CN219196224U CN219196224U CN202320390532.5U CN202320390532U CN219196224U CN 219196224 U CN219196224 U CN 219196224U CN 202320390532 U CN202320390532 U CN 202320390532U CN 219196224 U CN219196224 U CN 219196224U
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Abstract
The utility model discloses a dam downstream seepage recovery facility which comprises a water collecting tank, blind ditches and a pump station, wherein the seepage recovery facility is built at a dam body position of the downstream of a tailing pond and is used for solving the seepage problem of the dam of the downstream of the tailing pond water body, the water collecting tank is arranged beside an outlet of a flood discharge tunnel, the blind ditches are arranged at a dam foot of the downstream of the tailing pond water body, and the pump station is arranged beside the water collecting tank; the dam body seepage water is collected and recycled by the blind ditch and the water collecting pool, and the collected polluted water is conveyed to a storage area or a water treatment station for treatment by the pump station, so that the whole process of collecting and treating the seepage water is completed.
Description
Technical Field
The utility model relates to dam seepage recovery in the technical field of hydraulic engineering, in particular to a dam downstream seepage recovery facility.
Background
The method has the advantages that the number of tailings ponds is large, the distribution is wide, and the water in the tailings ponds generally has the problems of exceeding the standard of strong acid and heavy metal content. Because the environment of the tailing pond is complex, some tailing pond dams are lost over time, the phenomenon that the water seepage is serious at the downstream dam positions of the tailing pond exists, the phenomenon has extremely strong concealment on environmental pollution, the management or treatment difficulty is very high, especially in the areas adjacent to important rivers, drinking water sources and areas sensitive to ecological environment, when the measures for preventing and treating the pollution are imperfect, the measures for treating and managing are improper, and the environmental risk and the hidden danger of disasters are outstanding. How to effectively collect and recycle the water seepage problem of the tailing pond dam body, and has important effects on solving the hidden pollution of acidic water bodies, alkaline water bodies or heavy metal water bodies to the surrounding environment, protecting the ecological environment and reducing the potential risk hidden trouble of the environment.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and provides a dam downstream seepage recovery facility which comprises a water collecting tank, a blind ditch and a pump station.
The specific implementation modes for realizing the purposes of the utility model are as follows:
the utility model provides a dam low reaches infiltration recovery facility, includes tailing pond water low reaches dam and drainage tunnel export, its characterized in that, this facility comprises catch basin, french drain, pump station and PVC pipe, the catch basin is located by the drainage tunnel export, the french drain is located the dam foot department of tailing pond water low reaches dam, the pump station is located by the catch basin;
the water collecting pool is a rectangular or polygonal foundation pit dug under a ground surface, a cofferdam and a bottom plate poured by a reinforced concrete layer are arranged in the foundation pit, and an isolation layer, a bonding layer and an anti-corrosion layer are sequentially arranged on the inner surface of the reinforced concrete layer; the bottom of the water collecting tank is provided with a plurality of pipe orifices communicated with the outside of the tank; the top surface of a circle of cofferdam on the water collecting pool is provided with a bentonite waterproof blanket layer, and a pile is arranged between the bentonite waterproof blanket layer and the foundation;
the blind ditch is arranged around the dam foot of the downstream dam of the tailing pond water body, the cross section of the blind ditch is in an inverted trapezoid shape, a PVC (polyvinyl chloride) flower pipe is laid along the bottom of the blind ditch, a plurality of three-way joints are arranged on the PVC flower pipe, and a gravel layer, a geotechnical cloth layer and a gravel layer are sequentially laid in the blind ditch from the PVC flower pipe to the surface of the blind ditch;
one end of the PVC pipe is connected with a pipe orifice in the water collecting tank, and the other end of the PVC pipe is connected with a tee joint on the PVC flower pipe in the blind ditch;
the water suction pipe of the pump station is arranged in the water collecting tank, and the water outlet pipe of the pump station is arranged in the water body of the tailing pond.
The isolation layer is made of epoxy glass fiber reinforced plastic.
The anti-corrosion layer is made of acid-proof plates.
The bonding layer is made of epoxy cement.
The thickness of the bentonite waterproof blanket layer is 0.5-1 times of the thickness of the reinforced concrete layer.
The pile inserting device comprises a plurality of pile inserting pieces, wherein pile tips and inverted teeth are arranged at one ends of the pile inserting pieces, the pile inserting pieces penetrate through the bentonite waterproof blanket layer, and the pile tips and the inverted teeth are embedded into the soil layer.
The water collecting tank is internally provided with an upper liquid level limit elevation and a lower liquid level limit elevation, and the lower liquid level limit elevation is positioned above the pipe orifice.
The set elevation of the PVC pipe center in the blind drain is equal to the upper limit elevation of the liquid level of the water collecting tank.
The utility model solves the pollution of the seepage of the tailing pond dam body to the surrounding environment, and has the characteristics of low cost, small construction difficulty, convenient construction and obvious collection and recovery effects.
The beneficial effects of the utility model are as follows:
1. according to the utility model, the water collecting pond, the blind ditch and the pump station are built at the dam foot of the downstream dam of the tailing pond water body, the dam seepage is collected and concentrated through the blind ditch and the water collecting pond, and the collected polluted water is conveyed to a storage area or a water treatment station for treatment through the pump station, so that the pollution of the dam seepage to the environment is effectively slowed down.
2. The utility model extends along the dam foot of the downstream dam of the tailing pond water body to form a blind ditch, and a gravel layer, a geotechnical cloth layer and a gravel layer are sequentially laid in the blind ditch from the PVC flower pipe to the surface of the blind ditch; the blind ditches are arranged to effectively collect water seepage of the dam body at the downstream of the tailing pond water body, the seepage of the water seepage of the dam body to the surrounding environment is cut off, and the pollution of the water seepage to the surrounding environment is effectively prevented.
3. The water seepage collected by the blind ditches is conveyed to the water collecting pool through the PVC pipe to be concentrated, and finally the collected polluted water is conveyed to a storage area or a water treatment station to be treated through the pump station, so that the whole process of collecting and treating the water seepage is finished, and the method has an important effect on solving the hidden pollution of acidic water bodies, alkaline water bodies or heavy metal water bodies to the surrounding environment, protecting the ecological environment and reducing the hidden danger of the environment.
4. According to the utility model, the water collecting pool is arranged beside the outlet of the flood discharging tunnel, so that the flood is buffered and collected during flood discharging.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a plan layout of the present utility model;
FIG. 3 is a schematic view of the structure of the sump of the present utility model;
fig. 4 is a schematic structural view of the blind ditch according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1 and 2, taking a certain tailing pond as an example, a main building of the tailing pond comprises a dam, a flood discharge tunnel and a water delivery tunnel, wherein the flood discharge tunnel is arranged on the left bank of the dam and mainly comprises an inlet flood discharge well, a tunnel body section and an outlet section, a downstream dam 1 of a water body of the tailing pond is a clay inclined wall ballast dam, and the water body of the tailing pond belongs to an acidic water body; because the clay inclined wall and ballast dam has larger water seepage quantity, the acid water body leaks for a long time, serious pollution is caused to adjacent rivers, drinking water sources and ecological environment, and the treatment is unprecedented.
The utility model is provided with the following steps:
referring to fig. 1, 2, 3 and 4, a blind ditch 4 is arranged around a dam foot of a downstream dam 1 of a tailing pond water body, a water collecting tank 3 is arranged beside a flood discharge tunnel outlet 2, and a pump station 5 is arranged beside the water collecting tank 3;
the utility model is provided with a PVC flower pipe 41 along the bottom of the blind ditch 4, and a plurality of tee joints 411 are arranged on the PVC flower pipe 41; the bottom of the water collecting tank 3 is provided with a plurality of pipe orifices 35 communicated with the outside of the tank; the pipe orifice 35 in the water collecting tank 3 is connected with the tee joint 411 on the PVC pipe 41 in the blind drain 4 through the PVC pipe 6;
the pump station 5 is arranged beside the water collecting tank 3, a water suction pipe of the pump station 5 is arranged in the water collecting tank 3, and a water outlet pipe of the pump station 5 is arranged in the water of the tailing pond.
The utility model works as follows:
referring to fig. 1, 2, 3 and 4, water seepage around the downstream dam 1 of the tailing pond water body enters the PVC pipe 41 through the gravel layer 44, the geotechnical cloth layer 43 and the crushed stone layer 42 of the blind ditch 4; the water entering the PVC pipe 41 flows into the water collecting tank 3 through the tee 411, the PVC pipe 6 and the pipe orifice 35; when the water level in the water collecting tank 3 reaches the upper limit elevation of the liquid level, the pump station 5 is started, and the collected polluted water is conveyed to a storage area through the pump station; when the water level in the water collecting tank 3 reaches the lower limit elevation of the liquid level, the pump station 5 stops, and the circulation work is performed in this way;
because the set elevation of the pipe center of the PVC pipe 41 in the blind drain 4 is equal to the upper limit elevation of the liquid level of the water collecting tank 3, one end of the PVC pipe 6 is connected with the tee 411 of the PVC pipe 41, and the other end is connected with the pipe orifice 35 of the water collecting tank 3; and the pipe orifice 35 is positioned below the lower limit level of the water collecting tank 3, so that the drop is formed from one end to the other end of the PVC pipe 6, and water in the PVC pipe 41 can automatically flow into the water collecting tank 3.
The blind ditch is built:
referring to fig. 1, 2 and 4, a blind ditch 4 is excavated according to the excavation side line and the slope releasing requirement of a dam foot surrounding a tailing pond water body downstream dam 1 according to a construction drawing, a shoveless machine is adopted for excavation, and a dump truck is adopted for soil loading; after the excavation is completed and qualified, laying a PVC (polyvinyl chloride) flower pipe 41 at the bottom of the blind ditch 4, fixing the position of the PVC flower pipe, preventing the PVC flower pipe from moving during gravel backfilling, avoiding the position of a tee 411 on the PVC flower pipe 41, and sequentially laying a gravel layer 42, a geotechnical cloth layer 43 and a gravel layer 44 to complete backfilling.
Building a water collecting tank:
referring to fig. 1, 2 and 3, a foundation pit of a water collecting tank 3 is excavated according to a construction drawing, when the foundation pit is excavated, the top of the foundation pit is excavated according to an excavation edge line, slopes are laid around, a shoveless machine is used for excavation, and a dump truck is used for loading and transporting soil; in the foundation pit excavation process of the water collecting pit 3, a shovel excavation probe is used for observing the underground water level and detecting the water content of a soil sample at the bottom of the periphery of a foundation pit excavation platform so as to timely master the underground water level and the soil sample condition and better guide the next construction, after the foundation pit excavation is completed and is qualified through inspection, a hand vibration rammer can be used for earth compaction according to the requirements of a design drawing, if the earth quality is poor, gravel and stone cushion layers are backfilled in a layered mode and compacted, then a reinforced concrete layer 31 bottom plate, a reserved pipe orifice 35, a supporting template and a cofferdam for pouring the reinforced concrete layer 31 are sequentially poured until concrete maintenance is completed, then, construction of an isolation layer 32, a combination layer 36 and an anti-corrosion layer 37 is sequentially carried out on the inner wall of the water collecting pit 3, construction of a bentonite waterproof blanket layer 33 is carried out on the top surface of one week of the cofferdam of the water collecting pit 3, and a pile 34 is arranged between the bentonite waterproof blanket layer 33 and a foundation.
The blind ditch is connected with the water collecting tank:
referring to fig. 1, 2, 3 and 4, a trench of a PVC pipe 6 is excavated between each tee 411 of the PVC pipe 41 and the pipe orifice 35 of the corresponding water collecting tank 3, the PVC pipe 6 is laid, one end of the PVC pipe 6 is connected with the tee 411 on the PVC pipe 41, the other end is connected with the pipe orifice 35 in the water collecting tank 3, and after the inspection is qualified, the trench is backfilled with earth;
the position of the tee 411 on the blind drain 4PVC pipe 41 is sequentially paved with the gravel layer 42, the geotechnical cloth layer 43 and the gravel layer 44 for supplementing and backfilling.
Building a pump station:
referring to fig. 1 and 2, a pump station 5 is built beside a water collecting tank 3 according to a construction drawing, a water suction pipe of the pump station 5 is arranged in the water collecting tank 3, and a water outlet pipe of the pump station 5 is arranged in a water body of a tailing pond.
Referring to fig. 1, 2 and 3, in order to prevent leakage of the water collecting tank 3, the isolation layer 32, the bonding layer 36 and the anti-corrosion layer 37 are sequentially arranged on the bottom plate of the reinforced concrete layer 31 and the inner wall of the cofferdam of the reinforced concrete layer 31 of the water collecting tank 3, so that the anti-corrosion and anti-leakage performances of the water collecting tank 3 can be effectively improved, the water collecting effect is ensured, and the service life of the water collecting tank 3 is prolonged.
Further, referring to fig. 1, 2 and 3, in order to prevent soil layers beside the water collecting tank 3 from collapsing and prevent soil from entering the water collecting tank 3, a bentonite waterproof blanket layer 33 is arranged on the top surface of a circle of the cofferdam of the water collecting tank, and the bentonite waterproof blanket layer 33 is fixedly connected with a foundation by a plurality of piles 34; for construction convenience, be equipped with stake point and pawl in the one end of stake 34, stake 34 wears in bentonite waterproof blanket layer 33, and stake point and pawl are embedded into in the soil layer, and stake 34's the stability of bentonite waterproof blanket layer 33 has effectively been improved to the setting, avoids taking place to shift, has effectively prevented earth to get into catch basin 3.
The utility model builds blind ditches and water collecting ponds at the downstream dam positions of the tailing pond, builds pumping stations beside the water collecting ponds, collects and recovers the dam seepage water by the blind ditches and the water collecting ponds, and conveys the collected polluted water to a storage area or a water treatment station for treatment by the pumping stations, thereby completing the whole process of collecting and treating the seepage water, solving the pollution of the dam seepage water to the surrounding environment, and having the characteristics of low cost, small construction difficulty, convenient construction and obvious collecting and recovering effect.
Claims (8)
1. The utility model provides a dam low reaches infiltration recovery facility, includes tailing pond water low reaches dam (1) and drainage tunnel export (2), its characterized in that, this facility comprises catch basin (3), french drain (4), pump station (5) and PVC pipe (6), catch basin (3) are located by drainage tunnel export (2), french drain (4) are located the dam foot department of tailing pond water low reaches dam (1), pump station (5) are located by catch basin (3);
the water collecting tank (3) is a rectangular or polygonal foundation pit dug under a ground surface, a cofferdam and a bottom plate poured by a reinforced concrete layer (31) are arranged in the foundation pit, and an isolation layer (32), a bonding layer (36) and an anti-corrosion layer (37) are sequentially arranged on the inner surface of the reinforced concrete layer (31); the bottom of the water collecting tank (3) is provided with a plurality of pipe orifices (35) communicated with the outside of the tank; the top surface of a circle of cofferdam on the water collecting tank (3) is provided with a bentonite waterproof blanket layer (33), and a pile (34) is arranged between the bentonite waterproof blanket layer (33) and the foundation;
the blind ditch (4) is arranged around the dam foot of the tailing pond water body downstream dam (1), the section of the blind ditch (4) is in an inverted trapezoid shape, a PVC (polyvinyl chloride) flower pipe (41) is laid along the bottom of the blind ditch (4), a plurality of tee joints (411) are arranged on the PVC flower pipe (41), and a gravel layer (42), a geotechnical cloth layer (43) and a gravel layer (44) are sequentially laid from the PVC flower pipe (41) to the surface of the blind ditch (4) in the blind ditch (4);
one end of the PVC pipe (6) is connected with a pipe orifice (35) in the water collecting tank (3), and the other end of the PVC pipe is connected with a tee joint (411) on the PVC pipe (41) in the blind ditch (4);
the water suction pipe of the pump station (5) is arranged in the water collecting tank (3), and the water outlet pipe of the pump station (5) is arranged in the water body of the tailing pond.
2. A dam downstream water recovery facility as claimed in claim 1, wherein said barrier layer (32) is made of epoxy glass fibre reinforced plastic.
3. A dam downstream water recovery facility as claimed in claim 1, wherein said corrosion protection layer (37) is made of acid resistant board.
4. A downstream dam water recovery facility as claimed in claim 1, wherein said bonding layer (36) is made of epoxy cement.
5. A downstream water seepage and recovery facility for a dam according to claim 1, wherein the bentonite waterproof blanket layer (33) has a thickness of between 0.5 and 1 times the thickness of the reinforced concrete layer (31).
6. A downstream dam water recovery device according to claim 1, wherein the piles (34) are several, one end of each pile (34) is provided with a pile tip and a tooth, each pile (34) is inserted into the bentonite waterproof blanket layer (33), and the pile tip and the tooth are embedded into the soil layer.
7. A dam downstream water recovery facility as claimed in claim 1, wherein an upper level and a lower level are provided in said sump (3), and wherein the lower level is located above the nozzle (35).
8. A dam downstream water seepage recovery facility according to claim 1, wherein the set elevation of the pipe center of the PVC pipe (41) in the blind ditch (4) is equal to the upper limit elevation of the liquid level of the water collecting tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320390532.5U CN219196224U (en) | 2023-03-06 | 2023-03-06 | Dam downstream infiltration recovery facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320390532.5U CN219196224U (en) | 2023-03-06 | 2023-03-06 | Dam downstream infiltration recovery facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219196224U true CN219196224U (en) | 2023-06-16 |
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ID=86707842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320390532.5U Active CN219196224U (en) | 2023-03-06 | 2023-03-06 | Dam downstream infiltration recovery facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219196224U (en) |
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2023
- 2023-03-06 CN CN202320390532.5U patent/CN219196224U/en active Active
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