CN104790351A - Flood drainage system blockage structure with underground spring water and tailing seeping water drainage function - Google Patents
Flood drainage system blockage structure with underground spring water and tailing seeping water drainage function Download PDFInfo
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- CN104790351A CN104790351A CN201510196273.2A CN201510196273A CN104790351A CN 104790351 A CN104790351 A CN 104790351A CN 201510196273 A CN201510196273 A CN 201510196273A CN 104790351 A CN104790351 A CN 104790351A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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Abstract
A flood drainage system blockage structure with an underground spring water and tailing seeping water drainage function comprises an upstream blockage structure and a downstream blockage structure. The upstream blockage structure comprises a chute, gaps are reserved between cover plates of the chute, the gaps are filled with non-woven geotechnical cloth I, and a concrete block is arranged at the inlet section of the chute. The downstream blockage structure comprises a culvert pipe, a concrete retaining wall is arranged at the outlet end of the culvert pipe, a concrete cover plate is arranged above the concrete retaining wall, a cement mortar plastering layer is arranged on one side face of the upstream side of the concrete retaining wall, and the concrete retaining wall is provided with an observation hole, an overflow hole and a sand washing hole; a grit chamber is arranged on the upstream side of the concrete retaining wall, a water passing area is located on the grit chamber, a concrete bottom plate is arranged at the bottom of the grit chamber, and the upper surface of the concrete bottom plate is a bevel. A second geotechnical cloth plug is arranged in the overflow hole, and a first geotechnical cloth plug is arranged at the inlet end of the sand washing hole. According to the flood drainage system blockage structure, flood cannot pass, but underground spring water and tailing seeping water can pass, no sand is leaked, construction quantity is small, cost is low, and construction period scheduling is flexible.
Description
Technical field
The present invention relates to Tailings Dam flood drainage system plugging structure, be specifically related to a kind of Tailings Dam flood drainage system plugging structure with row's underground spring and mine tailing water seepage function.
Background technology
Flood drainage system is one of crucial structure of Tailings Dam, is generally made up of water inlet structure and drainage structures, and water inlet structure are generally catch pit or skewed slot, and drainage structures is generally tunnel, skewed slot or culvert pipe.When flood drainage system life cycle terminates, when demonstration does not re-use, after new flood drainage system builds up and brings into use, shutoff must be carried out to original flood drainage system, terminate its discharge capacity, avoid it to become tailings leakage path.
The plugging structure that traditional flood drainage system plugging structure is as a whole, be divided into rigidity shutoff and flexible blockage two class, the former adopts the shutoff of the rigid material such as cemented rock, concrete, and design concept is based on " immediately without crossing water " after shutoff, disposable shutoff of making is tight, watertight; The tight filling that the latter utilizes the materials such as sand, gravel, block stone, non-woven geotextile orderly in tube wall, utilize the seepage failure of plugging material, make permeable occluding body originally pass water permeability in time to weaken, outer water percolating capacity reduces gradually, finally reaching safe shutoff, is " gradual change is without crossing a water " process.
These two kinds traditional shutoff modes, no matter be flexible blockage or rigidity shutoff, no matter all there are three common problems, the first, be rigidity shutoff " immediately without crossing water ", or " gradual change is without crossing water " of flexible blockage, be all based on " shutoff is tight ", finally all discarded all drain functions of original flood drainage system, cause that the mine tailing in storehouse seeps water, underground spring can not utilize flood drainage system to drain, and be detained in storehouse, can only be discharged by other flood drainage system or row system of oozing; The second, skewed slot circuit is longer, under the thought of " the overall plugging structure " considered by tradition, no matter be flexible blockage or rigidity shutoff, its engineering quantity is all comparatively large, sand washing, Rolling Stone constructional difficulties, mobility is little, and waste water is more, and especially rigidity plugging grouting cost is higher; 3rd, " tight shutoff " is a perfect condition, in fact for skewed slot, owing to structure being divided at the bottom of sidewall pipe and caping two independent sector, crack is had again between cover plate, therefore its globality itself is less better compared with other structures, and be subject to outer lotus, the unequal impact distortion of foundation settlement, fracture, flexible blockage material itself is difficult to fit closely with tube wall; And for rigidity shutoff, due to the restriction of engineering quantity, construction costs, often leakiness of being in the milk.These all cause the current flowing to space between chute wall and occluding body, may with occluding body upstream face for starting point forms a bar shaped high laminate, to cell wall and periphery mine tailing formation high-pressure osmosis from inside to outside, easily cause periphery tailings accumulation body that infiltration occurs on the contrary and damage.
In addition, the plugging structure that traditional flood drainage system plugging structure is as a whole, construction must have a sequencing, carries out plugging construction from top to bottom often.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency of above-mentioned background technology, there is provided one can realize " but flood " simultaneously, but " underground spring and mine tailing infiltration can be crossed ", and " not leaking sand ", construction works amount are less, cost is lower, duration scheduling has the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function flexibly.
The technical scheme that the present invention solves the employing of its technical problem is, a kind of flood drainage system plugging structure with row's underground spring and mine tailing water seepage function, comprise upstream plugging structure and downstream plugging structure, described upstream plugging structure comprises skewed slot, gap is left between the cover plate of described skewed slot, in described gap, filling has non-woven geotextile I, described non-woven geotextile I edge extends on the cover plate of skewed slot, the extension edge of non-woven geotextile I has cement mortar along upper, and the extension edge of non-woven geotextile I is along being fixed on the cover plate of skewed slot by cement mortar; The inducer of described skewed slot is provided with concrete block; Described downstream plugging structure comprises culvert pipe, the port of export of culvert pipe is provided with concrete guard wall, be provided with concrete cover II above concrete guard wall, the upstream side side of concrete guard wall is provided with cement sand plaster layer, and concrete guard wall is provided with peep hole, spout hole, scouring sluice from top to bottom successively; The upstream side of concrete guard wall is provided with grit chamber, and be the pool excessively of hollow above grit chamber, be provided with concrete floor bottom grit chamber, concrete floor upper surface is inclined plane; Be provided with the second geotextiles plug in described spout hole, the second geotextiles plug comprises the second geotextiles plug body and stopper rod, and the second geotextiles plug body is connected with stopper rod; The entrance point of described scouring sluice is provided with the first geotextiles plug.
Further, the port of export of described scouring sluice is provided with stopper, rake is provided with in described scouring sluice, the rabble arm that described rake comprises rake body and is connected with rake body, the rake body end of rake extends in grit chamber, have the hole passed for rabble arm in the middle of described stopper, between stopper and rabble arm, be provided with non-woven geotextile II.
Further, described non-woven geotextile I extends to the length >=30cm on the cover plate of skewed slot.
Further, described second geotextiles plug body comprises and is wound around the iron wire loop through antirust treatment of non-woven geotextile II or stainless steel coil, and described stopper rod adopts diameter to be that the iron wire through antirust treatment of 6mm or stainless steel wire are made.
Further, described concrete guard wall is rubble concrete barricade or plain concrete barricade.
Further, the thickness >=5cm of described cement sand plaster layer.
Further, the upper surface of described concrete floor to be the gradient be 10% ~ 60% inclined-plane.
Further, described first geotextiles plug adopts non-woven geotextile I to make.
Further, the specification of described non-woven geotextile I is 400g/m
2, the specification of described non-woven geotextile II is 80g/m
2.
Compared with prior art, advantage of the present invention is as follows:
(1) traditional overall plugging structure is divided into upstream plugging structure, downstream plugging structure two parts by the present invention, and upstream plugging structure is mainly used in the earial drainage function terminating this flood drainage system, prevents flood from entering flood drainage system again, realizes " but flood "; Downstream plugging structure to be mainly used in ensureing in storehouse that underground spring and mine tailing seep water normal earial drainage, and tailings does not flow out simultaneously, realizes the function of " cross underground spring and mine tailing infiltration, do not leak sand ".Therefore the present invention can realize the functional requirement of " but flood ", " cross underground spring and mine tailing infiltration, do not leak sand " simultaneously, and avoid the row of setting in addition to ooze system for arranging underground spring and mine tailing infiltration, construction works amount is less, can be effectively cost-saving.
(2) upstream side of concrete guard wall is provided with grit chamber, concrete guard wall is provided with peep hole, spout hole, scouring sluice from top to bottom successively, tailings coarse grain is precipitated by grit chamber, tailings particulate is filtered by the second geotextiles plug in spout hole, and clear water is discharged by spout hole, when flow is extraordinary, water is discharged from peep hole, while row's underground spring and mine tailing infiltration, can also anti-leak-stopping sand, avoid periphery tailings accumulation body that infiltration occurs and damage.
(3) be provided with rake in scouring sluice, when the sand setting in grit chamber is long-pending full, climbed out of by the sand setting that grit chamber deposits by rake, sediment outflow is convenient, clean environment firendly.
(4) be provided with the second geotextiles plug in spout hole, the second geotextiles plug can prevent tailings from entering spout hole while ensureing that clear water is discharged from spout hole further, prevent spout hole from blocking, meanwhile, the rear recycling capable of washing of the second geotextiles plug, or directly change, clean environment firendly.
(5) upstream of the present invention plugging structure and downstream plugging structure are without inevitable precedence in construction organization, can construct according to actual conditions simultaneously or successively, and duration scheduling flexibly.
Accompanying drawing explanation
Fig. 1 is the generalized section of embodiment of the present invention upstream plugging structure.
Fig. 2 is the generalized section of embodiment of the present invention downstream plugging structure.
Fig. 3 is the elevational schematic view of embodiment of the present invention downstream plugging structure.
Fig. 4 is the structural representation of the second geotextiles plug embodiment illustrated in fig. 2.
In figure: 1-skewed slot; 2-gap; 3-cement mortar; 4-concrete block; 5-culvert pipe; 6-concrete guard wall; 7-cement sand plaster layer; 8-peep hole; 9-spout hole; 10-scouring sluice; 11-the second geotextiles plug; 12-the first geotextiles plug; 13-rake; 14-stopper; 15-concrete floor; 16-grit chamber; 17-cross pool; 18-concrete cover; 19-the second geotextiles plug body; 20-stopper rod.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The present embodiment comprises upstream plugging structure and downstream plugging structure, with reference to Fig. 1, upstream plugging structure comprises skewed slot 1, gap 2 is left between the cover plate of skewed slot 1, in gap 2, filling has non-woven geotextile I, and non-woven geotextile I edge extends on the cover plate of skewed slot 1, and non-woven geotextile I length extended on the cover plate of skewed slot 1 is 30cm, the extension edge of non-woven geotextile I has cement mortar 3 along upper, and the extension edge of non-woven geotextile I is along being fixed on the cover plate of skewed slot 1 by cement mortar 3; The inducer of skewed slot 1 is provided with concrete block 4, and the specification of non-woven geotextile I is 400g/m
2.
With reference to Fig. 2, Fig. 3, downstream plugging structure comprises culvert pipe 5, the port of export of culvert pipe 5 is provided with concrete guard wall 6, concrete cover 18 is provided with above concrete guard wall 6, the upstream side side of concrete guard wall 6 is provided with cement sand plaster layer 7, and concrete guard wall 6 is provided with peep hole 8, spout hole 9, scouring sluice 10 from top to bottom successively; The upstream side of concrete guard wall 6 is provided with grit chamber 16, is the pool 17 excessively of hollow, is provided with concrete floor 15 bottom grit chamber 16 above grit chamber 16;
The second geotextiles plug 11 is provided with in spout hole 9, with reference to Fig. 4, second geotextiles plug 11 comprises the second geotextiles plug body 19 and stopper rod 20, second geotextiles plug body 19 is connected with stopper rod 20, second geotextiles plug body 19 comprises the iron wire loop through antirust treatment or stainless steel coil that are wound around non-woven geotextile II, and the specification of non-woven geotextile II is 80g/m
2; Stopper rod 20 adopts diameter to be that the iron wire through antirust treatment of 6mm or stainless steel wire are made;
The entrance point of scouring sluice 10 is provided with the first geotextiles plug 12, first geotextiles plug 12 adopts non-woven geotextile I to make, the port of export of scouring sluice 10 is provided with stopper 14, rake 13 is provided with in scouring sluice 10, the rabble arm that rake 13 comprises rake body and is connected with rake body, the rake body end of rake 13 extends in grit chamber 16, has the hole passed for rabble arm, be provided with non-woven geotextile II between stopper 14 and rabble arm in the middle of stopper 14.
Concrete guard wall 6 is rubble concrete barricade.The thickness of cement sand plaster layer 7 is 5cm.The upper surface of concrete floor 15 to be gradients be 20% inclined-plane, described inclined-plane adopts cement coating troweling.
In the present invention, concrete guard wall 6 also can be plain concrete barricade or other rigid structures barricade.
The present invention is mainly used in the flood drainage system of skewed slot-culvert pipe formula, and the flood drainage system that in storehouse, mine tailing seeps water, underground spring is more, the present invention, after flood drainage system shutoff completes and terminates its water function that drains off floodwaters, can also utilize former flood drainage system can as the passage of the infiltration of last person ore deposit and underground spring.The present invention is also applicable to prevent flood drainage system from leaking sand, but is not suitable for flood drainage system structure and is subject to serious damage, has occurred the situation of development-oriented leakage sand.When there is development-oriented leakage sand, first must administer structure, after control is stable, can the present invention be adopted.
Design principles of the present invention: corresponding function, refined structure.Occluding body is divided into two parts, to realize the functional requirement of " but flood ", " crossing underground spring and mine tailing infiltration ", " not leaking sand " respectively.Part I is positioned at into water structure, is called upstream plugging structure, its objective is the earial drainage function terminating this flood drainage system, prevents flood from entering flood drainage system again, realizes " but flood "; Part II is positioned at structure outlet of drainning off floodwaters, and is called downstream plugging structure, its objective is and ensures spring normal earial drainage in underground in storehouse, and tailings does not flow out simultaneously, realizes " cross underground spring (mine tailing infiltration), do not leak sand ".
Upstream of the present invention plugging structure and downstream plugging structure can independent constructions.Can the construction of advanced row import department, also first can carry out the construction in exit, or construct simultaneously.Upstream plugging structure Main Function is to cut off upland water, avoids flood in storehouse to increase the internal water pressure of flood drainage system; Downstream plugging structure is mainly used in row's underground spring and mine tailing infiltration.
Below in conjunction with background case and Specific construction scheme, the present invention is described further.
Case background:
In the original storehouse of certain Tailings Dam, flood drainage system is skewed slot-culvert pipe, and upstream skewed slot import is rectangle, is of a size of high 1.8m, wide 0.8m, downstream culvert pipe is circular arch stalk type, and height is 1.2m, and wide is 0.5m, vault diameter is 0.5m, discharge capacity does not meet code requirement, and meanwhile, the leakage sand behavior that chute cover plate breaks once occurred this Tailings Dam in running before, after sand pocket backfill process, do not occur again for many years to leak sand situation.For safety, when closing storehouse process, consider the former flood drainage system of shutoff, push up newly-built open channel from beach and drain off floodwaters.Reconnaissance trip, finds in the dry season without flood, and this skewed slot outfall still has certain flow (about 1m
3/ h) clear water release, during rainy season, flow can increase, and known mass flow is no more than 20m
3/ h, analyze by inquiry, this phenomenon Producing reason does not carry out detailed geological mapping to reservoir area before building storehouse, spring in storehouse is not dealt carefully with when building storehouse, cause flood drainage system in storehouse to become and mainly descend spring flow channels, therefore, after requiring shutoff, underground spring is still normally discharged by this passage.When closing storehouse beach face and administering, in skewed slot, there is a small amount of tailings to discharge, but be not development-oriented leakage sand, stop in two days, do not recur afterwards, after therefore requiring shutoff, ensure that former flood drainage system does not leak sand.
Constructure scheme:
Upstream plugging structure construction: owing to having underground spring water flow in former flood drainage system throughout the year, therefore after newly-built open channel is built, only carry out upstream plugging structure construction, namely to after the inducer dabbing base plate of skewed slot 1 and cell wall, cast-in-situ concrete block 4, in gap 2 between the cover plate of skewed slot 1, filling has non-woven geotextile I, non-woven geotextile I edge extends on the cover plate of skewed slot 1, the extension edge of non-woven geotextile I has cement mortar 3 along upper, the extension edge of non-woven geotextile I is along being fixed on the cover plate of skewed slot 1 by cement mortar 3, cast-in-situ concrete shutoff segment length 1.5m.
Downstream plugging structure construction: after closing other project of storehouse engineering and completing, just carry out downstream plugging structure construction.First with culvert pipe 5 lower exit for starting point, first culvert pipe 5 is exported top and excavate 4m length, then this section concrete base plate 15 is excavated, to the concrete floor 15 concrete backfill supertronic to 20% at culvert pipe 5 place of rear 2m section, surrounding culvert pipe 5 tube wall is smeared cement mortar and is reinforced troweling, forms grit chamber 16; Build rubble concrete barricade to 2m section culvert pipe 5 before nearly outlet, when building, concrete guard wall 6 is reserved peep hole 8, spout hole 9 and scouring sluice 10 from top to bottom.Then settle desanding rake 13 reserved in grit chamber 16, the rabble arm that rake 13 comprises rake body and is connected with rake body, rabble arm stretches out from scouring sluice 10.Arrange stopper 14 at the entrance point of scouring sluice 10, the rake body end of rake 13 extends in grit chamber 16, has the hole passed for rabble arm, be provided with non-woven geotextile II between stopper 14 and rabble arm in the middle of stopper 14.
Finally, repair culvert pipe 5, peep hole 8 keeps penetrating, fills in the second geotextiles plug 11 to spout hole 9.In running, pool was formed on grit chamber 16, generally, the tailings carried in water, tailings coarse grain (diameter is greater than 0.2mm) precipitates by grit chamber 16, and tailings particulate is filtered by the second geotextiles plug 11 in spout hole 9, and clear water is discharged by spout hole 9, when flow is extraordinary, water is discharged from peep hole 8.When spout hole 9 place flow reduces, or non-woven geotextile II blackening, regularly the second geotextiles plug body 19 taken out cleaning or change; And periodic cleaning spout hole 9 place's silt sand, and regularly sand removal is carried out to grit chamber 16, pull out stopper 14, the first geotextiles plug 12 between rabble arm and scouring sluice 10 is gone out with instrument hook, then promote rake 13 sand removal back and forth, if desired, jet water spout can be put into from peep hole 8, use pumping for water pump sand washing, auxiliary sand removal.Leak sand on a large scale if occur, water sand concentration increases, and flow velocity increases, and when tailings does not precipitate in time by grit chamber 16, can be flowed out by peep hole 8.When sand is taken in peep hole 8 water outlet, should investigate in time, be confirmed whether to occur to leak sand, to take counter-measure, so peep hole 8 to a certain degree can play forewarning function.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these amendments and modification are within the scope of the claims in the present invention and equivalent technologies thereof, then these revise and modification also within protection scope of the present invention.
The prior art that the content do not described in detail in manual is known to the skilled person.
Claims (8)
1. one kind has the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function, it is characterized in that: comprise upstream plugging structure and downstream plugging structure, described upstream plugging structure comprises skewed slot (1), gap (2) is left between the cover plate of described skewed slot (1), in described gap (2), filling has non-woven geotextile I, described non-woven geotextile I edge extends on the cover plate of skewed slot (1), the extension edge of non-woven geotextile I has cement mortar (3) along upper, the extension edge of non-woven geotextile I is along being fixed on the cover plate of skewed slot (1) by cement mortar (3), the inducer of described skewed slot (1) is provided with concrete block (4), described downstream plugging structure comprises culvert pipe (5), the port of export of culvert pipe (5) is provided with concrete guard wall (6), concrete guard wall (6) top is provided with concrete cover (18), the upstream side side of concrete guard wall (6) is provided with cement sand plaster layer (7), concrete guard wall (6) is provided with from top to bottom successively peep hole (8), spout hole (9), scouring sluice (10), the upstream side of concrete guard wall (6) is provided with grit chamber (16), and grit chamber (16) top is pool (17) excessively of hollow, and grit chamber (16) bottom is provided with concrete floor (15), and concrete floor (15) upper surface is inclined plane, be provided with the second geotextiles plug (11) in described spout hole (9), the second geotextiles plug (11) comprises the second geotextiles plug body (19) and stopper rod (20), and the second geotextiles plug body (19) is connected with stopper rod (20), the entrance point of described scouring sluice (10) is provided with the first geotextiles plug (12).
2. there is the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function as claimed in claim 1, it is characterized in that: the port of export of described scouring sluice (10) is provided with stopper (14), rake (13) is provided with in described scouring sluice (10), the rabble arm that described rake (13) comprises rake body and is connected with rake body, the rake body end of rake (13) extends in grit chamber (16), have the hole passed for rabble arm in the middle of described stopper (14), between stopper (14) and rabble arm, be provided with non-woven geotextile II.
3. there is the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function as claimed in claim 1 or 2, it is characterized in that: described non-woven geotextile I extends to the length >=30cm on the cover plate of skewed slot (1).
4. there is the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function as claimed in claim 1 or 2, it is characterized in that: described second geotextiles plug body (19) comprises and is wound around the iron wire loop through antirust treatment of non-woven geotextile II or stainless steel coil, described stopper rod (20) adopts diameter to be that the iron wire through antirust treatment of 6mm or stainless steel wire are made.
5. there is the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function as claimed in claim 1 or 2, it is characterized in that: described concrete guard wall (6) is rubble concrete barricade or plain concrete barricade.
6. as claim 1 or 2 state there are row's underground spring and the flood drainage system plugging structures of mine tailing water seepage function, it is characterized in that: the thickness >=5cm of described cement sand plaster layer (7).
7. there is row's underground spring and the flood drainage system plugging structure of mine tailing water seepage function as claimed in claim 1 or 2, it is characterized in that: the upper surface of described concrete floor (15) to be the gradient be 10% ~ 60% inclined-plane.
8. there is the flood drainage system plugging structure of row's underground spring and mine tailing water seepage function as claimed in claim 2, it is characterized in that: the specification of described non-woven geotextile I is 400g/m
2, the specification of described non-woven geotextile II is 80g/m
2.
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| Application Number | Priority Date | Filing Date | Title |
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|---|---|---|---|
| CN201510196273.2A CN104790351B (en) | 2015-04-23 | 2015-04-23 | There is the flood drainage system plugging structure of the underground spring of row and mine tailing water seepage function |
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| CN107675928A (en) * | 2017-07-26 | 2018-02-09 | 喻天宝 | Well formula underground parking garage |
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