CN104790351B - There is the flood drainage system plugging structure of the underground spring of row and mine tailing water seepage function - Google Patents
There is the flood drainage system plugging structure of the underground spring of row and mine tailing water seepage function Download PDFInfo
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- CN104790351B CN104790351B CN201510196273.2A CN201510196273A CN104790351B CN 104790351 B CN104790351 B CN 104790351B CN 201510196273 A CN201510196273 A CN 201510196273A CN 104790351 B CN104790351 B CN 104790351B
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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
Abstract
The flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function, comprises upstream plugging structure and downstream plugging structure, and upstream plugging structure comprises skewed slot, between the cover plate of skewed slot, leaves gap, and in gap, filling has non-woven geotextile I; The inducer of skewed slot is provided with concrete block; Downstream plugging structure comprises culvert pipe, and the culvert pipe port of export is provided with concrete guard wall, and concrete guard wall top is provided with concrete cover, and concrete guard wall upstream side side is provided with cement sand plaster layer, and concrete guard wall is provided with peep hole, spout hole, scouring sluice; The upstream of concrete guard wall is provided with setting pot, and setting pot top was pool, and setting pot bottom is provided with concrete floor, and concrete floor upper surface is inclined-plane; In spout hole, be provided with the second geotextiles plug; The entrance point of scouring sluice is provided with the first geotextiles plug. The present invention can realize " but flood ", but can " cross underground spring and mine tailing infiltration, not leak sand ", and construction work amount is little, and cost is low, duration 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 the underground spring of row and mine tailing water seepage function.
Background technology
Flood drainage system is one of crucial structures of Tailings Dam, is generally made up of water inlet structures and drainage structures, and water inlet structures are generally gully or skewed slot, and drainage structures is generally tunnel, skewed slot or culvert pipe. When flood drainage system life cycle finishes, in the time that demonstration does not re-use, must, after new flood drainage system builds up and brings into use, carry out shutoff to original flood drainage system, finish its discharge capacity, avoid it to become tailings leakage path.
Traditional as a whole plugging structure of flood drainage system plugging structure, be divided into rigidity shutoff and flexible blockage two classes, 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, the disposable shutoff of making is tight, watertight; The latter utilizes the orderly tight filling in tube wall of the materials such as sand, gravel, piece stone, non-woven geotextile, utilize the seepage failure of plugging material, making the permeable occluding body of script pass in time water penetration weakens, 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, all there are three common problems, the first, no matter be " immediately without crossing water " of rigidity shutoff, 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 the mine tailing infiltration in storehouse, underground spring can not utilize flood drainage system to drain, and be detained in storehouse, can only discharge by other flood drainage system or the 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 quantities is all larger, sand washing, Rolling Stone constructional difficulties, mobility is little, and waste water is more, and especially rigidity plugging grouting cost is higher; The 3rd, " tight shutoff " is a perfect condition, in fact for skewed slot, due at the bottom of being divided into sidewall pipe in structure and caping two independent sectors, between cover plate, there is again crack, therefore its globality itself is less better compared with other structures, is subject to outer lotus, the unequal impact distortion of settlement of foundation, fracture, and flexible blockage material itself is difficult to fit closely with tube wall; And for rigidity shutoff, due to the restriction of quantities, construction costs, the often leakiness of being in the milk. These all cause flowing to the current in space between chute wall and occluding body, may form taking occluding body upstream face as starting point a high laminate of bar shaped, cell wall and periphery mine tailing are formed to high-pressure osmosis from inside to outside, easily cause on the contrary periphery tailings accumulation body that infiltration occurs and damage.
In addition, traditional as a whole plugging structure of flood drainage system plugging structure, construction must have a sequencing, carries out from top to bottom often plugging construction.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency of above-mentioned background technology, provide one can realize " but flood " simultaneously, but can " cross underground spring and mine tailing infiltration ", and " do not leak sand ", construction work amount is less, cost is lower, duration scheduling has the flood drainage system plugging structure of the underground spring of row and mine tailing water seepage function flexibly.
The technical scheme that the present invention solves its technical problem employing is, a kind of flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function, comprise upstream plugging structure and downstream plugging structure, described upstream plugging structure comprises skewed slot, between the cover plate of described skewed slot, leave gap, 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, concrete guard wall top is provided with concrete cover II, and the upstream side side of concrete guard wall is provided with cement sand plaster layer, is provided with successively from top to bottom peep hole, spout hole, scouring sluice on concrete guard wall; The upstream side of concrete guard wall is provided with setting pot, and setting pot top is the pool of crossing of hollow, and setting pot bottom is provided with concrete floor, and concrete floor upper surface is inclined plane; In described spout hole, be provided with the second geotextiles plug, 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, in described scouring sluice, be provided with rake, described rake comprises rake body and the rabble arm being connected with rake body, the rake body end of rake extends in setting pot, in the middle of described stopper, have the hole of passing for rabble arm, 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 the second geotextiles plug body comprises the iron wire loop through antirust processing or the stainless steel coil that are wound around non-woven geotextile II, and described stopper rod adopts the iron wire through antirust processing or the stainless steel wire that diameter is 6mm to make.
Further, described concrete guard wall is cyclopean concrete barricade or plain concrete barricade.
Further, the thickness >=5cm of described cement sand plaster layer.
Further, the upper surface of described concrete floor is that the gradient is 10%～60% inclined-plane.
Further, described the first geotextiles plug adopts non-woven geotextile I to make.
Further, the specification of described non-woven geotextile I is 400g/m2, the specification of described non-woven geotextile II is 80g/m2。
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 finishing the earial drainage function of this flood drainage system, prevents that flood from entering flood drainage system again, realizes in " but flood "; Downstream plugging structure is mainly used in ensureing in storehouse underground spring and the mine tailing normal earial drainage that seeps water, 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, avoids the row of setting in addition to ooze system for arranging underground spring and mine tailing infiltration, and construction work amount is less, can be effectively cost-saving.
(2) upstream side of concrete guard wall is provided with setting pot, on concrete guard wall, be provided with successively from top to bottom peep hole, spout hole, scouring sluice, tailings coarse grain precipitates by setting pot, tailings particulate filters by the second geotextiles plug in spout hole, and clear water is discharged by spout hole, in the time that flow is extraordinary, water is discharged from peep hole, when arranging the infiltration of underground spring and mine tailing, can also anti-leak-stopping sand, avoid periphery tailings accumulation body that infiltration occurs and damage.
(3) in scouring sluice, be provided with rake, when the sand setting in setting pot is long-pending full, can the sand setting of setting pot alluvial be climbed out of by rake, sediment outflow is convenient, clean environment firendly.
(4) in spout hole, be provided with the second geotextiles plug, when the second geotextiles plug ensures that clear water is discharged from spout hole, can further prevent that tailings from entering spout hole, prevent that spout hole from stopping up, 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, without inevitable precedence in construction organization, can be constructed according to actual conditions simultaneously or successively, and duration scheduling flexibly.
Brief description of the drawings
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; The 11-the second geotextiles plug; The 12-the first geotextiles plug; 13-rake; 14-stopper; 15-concrete floor; 16-setting pot; 17-pool excessively; 18-concrete cover; The 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, between the cover plate of skewed slot 1, leave gap 2, the interior filling in gap 2 has non-woven geotextile I, and non-woven geotextile I edge extends on the cover plate of skewed slot 1, and the length that non-woven geotextile I extends 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/m2。
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 guard wall 6 tops are provided with concrete cover 18, the upstream side side of concrete guard wall 6 is provided with cement sand plaster layer 7, is provided with successively from top to bottom peep hole 8, spout hole 9, scouring sluice 10 on concrete guard wall 6; The upstream side of concrete guard wall 6 is provided with setting pot 16, and what setting pot 16 tops were hollow crosses pool 17, and setting pot 16 bottoms are provided with concrete floor 15;
In spout hole 9, be provided with the second geotextiles plug 11, with reference to Fig. 4, the second geotextiles plug 11 comprises the second geotextiles plug body 19 and stopper rod 20, the second geotextiles plug body 19 is connected with stopper rod 20, the second geotextiles plug body 19 comprises the iron wire loop through antirust processing or the stainless steel coil that are wound around non-woven geotextile II, and the specification of non-woven geotextile II is 80g/m2; It is that the iron wire through antirust processing or the stainless steel wire of 6mm made that stopper rod 20 adopts diameter;
The entrance point of scouring sluice 10 is provided with the first geotextiles plug 12, the first geotextiles plug 12 adopts non-woven geotextile I to make, the port of export of scouring sluice 10 is provided with stopper 14, in scouring sluice 10, be provided with rake 13, rake 13 comprises rake body and the rabble arm being connected with rake body, the rake body end of rake 13 extends in setting pot 16, has the hole of passing for rabble arm in the middle of stopper 14, is provided with non-woven geotextile II between stopper 14 and rabble arm.
Concrete guard wall 6 is cyclopean concrete barricade. The thickness of cement sand plaster layer 7 is 5cm. The upper surface of concrete floor 15 is that the gradient is 20% inclined-plane, and described inclined-plane adopts cement plaster troweling.
In the present invention, concrete guard wall 6 also can be plain concrete barricade or other rigid structure barricade.
The present invention is mainly used in the flood drainage system of skewed slot-culvert pipe formula, and mine tailing infiltration, the more flood drainage system of underground spring in storehouse, the present invention completes and finishes it and drain off floodwaters after water function in flood drainage system shutoff, can also utilize former flood drainage system can serve as the passage of a last person ore deposit infiltration and underground spring. The present invention is also applicable to prevent that flood drainage system from leaking sand, has been subject to serious breaking-up but be not suitable for flood drainage system structure, has occurred the situation of development-oriented leakage sand. While there is development-oriented leakage sand, must first administer structure, after control is stable, can adopt the present invention.
Design principle of the present invention: corresponding function, refined structure. Occluding body is divided into two parts, to realize respectively the functional requirement of " but flood ", " crossing underground spring and mine tailing infiltration ", " not leaking sand ". Part I is positioned at into water structures, is called upstream plugging structure, its objective is the earial drainage function that finishes this flood drainage system, prevents that flood from entering flood drainage system again, realizes in " but flood "; Part II is positioned at the structures outlet of drainning off floodwaters, and is called downstream plugging structure, its objective is and ensures the normal earial drainage of underground spring 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 be advanced the construction of row import department, also can first carry out the construction in exit, or construct simultaneously. Upstream plugging structure Main Function is to cut off upland water, avoids the internal water pressure of flood increase flood drainage system in storehouse; Downstream plugging structure is mainly used in arranging 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 processing by sand pocket backfill, there is not again to leak for many years sand situation. For safety, while closing storehouse processing, 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, this skewed slot discharge outlet still has certain flow (about 1m3/ clear water h) releases, and when rainy season, flow can increase, and known mass flow is no more than 20m3/ h, analyze by inquiry, the reason that this phenomenon produces is to build Qian Weidui reservoir area, storehouse to carry out detailed geological mapping, building spring in Shi Weidui storehouse, storehouse deals carefully with, cause in storehouse flood drainage system to become and mainly descend spring flow channels, therefore require after shutoff, underground spring still can normally be discharged by this passage. In the time closing storehouse beach face improvement, in skewed slot, there is a small amount of tailings to discharge, but be not development-oriented leakage sand, in two days, stop, not recurrence, therefore requires after shutoff afterwards, ensure that former flood drainage system does not leak sand.
Arrangement and method for construction:
Upstream plugging structure construction: owing to there being 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, after the inducer dabbing base plate and cell wall to skewed slot 1, cast-in-place concrete piece 4, the interior filling in gap 2 between the cover plate of skewed slot 1 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-place concrete shutoff segment length 1.5m.
Downstream plugging structure construction: wait closing after engineering other project in storehouse completes, just carry out downstream plugging structure construction. First taking culvert pipe 5 lower exits as starting point, first culvert pipe 5 is exported to top and excavate 4m length, then this section concrete base plate 15 is excavated, the concrete floor 15 use concrete backfill supertronics to 20% at culvert pipe 5 places to rear 2m section, surrounding culvert pipe 5 tube walls are smeared cement mortar and are reinforced troweling, form setting pot 16; Front 2m section culvert pipe 5 to nearly outlet is built cyclopean concrete barricade, and while building, concrete guard wall 6 is reserved peep hole 8, spout hole 9 and scouring sluice 10 from top to bottom. Then settle the interior reserved desanding rake 13 of setting pot 16, rake 13 comprises rake body and the rabble arm being connected with rake body, and rabble arm stretches out from scouring sluice 10. At the entrance point of scouring sluice 10, stopper 14 is set, the rake body end of rake 13 extends in setting pot 16, has the hole of passing for rabble arm in the middle of stopper 14, is provided with non-woven geotextile II between stopper 14 and rabble arm.
Finally, culvert pipe 5 is repaired, peep hole 8 keeps penetrating, and spout hole 9 is filled in to the second geotextiles plug 11. In running, on setting pot 16, formed pool, generally, the tailings carrying in water, tailings coarse grain (diameter is greater than 0.2mm) falls by setting pot 16 precipitations, and tailings particulate filters by the second geotextiles plug 11 in spout hole 9, and clear water is discharged by spout hole 9, in the time that flow is extraordinary, water is discharged from peep hole 8. When spout hole 9 place's flows reduce, or the blackening of non-woven geotextile II, regularly the second geotextiles plug body 19 is taken out and clean or change; And periodic cleaning spout hole 9 place's silt sand, and regularly setting pot 16 is carried out to sand removal, pull out stopper 14, go out the first geotextiles plug 12 between rabble arm and scouring sluice 10 with instrument hook, then promote back and forth rake 13 sand removals, if desired, can put into jet water spout from peep hole 8, use pumping for water pump sand washing, auxiliary sand removal. If there is to leak on a large scale sand, water sand Enrichment, flow velocity increases, and when tailings can not precipitate in time by setting pot 16, can flow out by peep hole 8. Take sand when peep hole 8 water outlets, 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 amendment and modification within the scope of the claims in the present invention and equivalent technologies thereof, these revise and modification also within protection scope of the present invention.
The prior art that the content of not describing in detail in description is known to the skilled person.
Claims (8)
1. one kind has the flood drainage system plugging structure of the underground spring of row and mine tailing water seepage function, comprise upstream plugging structure, described upstream plugging structure comprises skewed slot (1), between the cover plate of described skewed slot (1), leave gap (2), 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), it is characterized in that: 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); Also be provided with downstream plugging structure, 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), is provided with successively from top to bottom peep hole (8), spout hole (9), scouring sluice (10) on concrete guard wall (6); The upstream side of concrete guard wall (6) is provided with setting pot (16), and setting pot (16) top is pool (17) excessively of hollow, and setting pot (16) bottom is provided with concrete floor (15), and concrete floor (15) upper surface is inclined plane; In described spout hole (9), be provided with the second geotextiles plug (11), 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. the flood drainage system plugging structure with the underground spring of row 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), in described scouring sluice (10), be provided with rake (13), described rake (13) comprises rake body and the rabble arm being connected with rake body, the rake body end of rake (13) extends in setting pot (16), in the middle of described stopper (14), have the hole of passing for rabble arm, between stopper (14) and rabble arm, be provided with non-woven geotextile II.
3. the flood drainage system plugging structure with row's underground spring and mine tailing water seepage function as claimed in claim 1 or 2, is characterized in that: described non-woven geotextile I extends to the length >=30cm on the cover plate of skewed slot (1).
4. the flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function as claimed in claim 1 or 2, it is characterized in that: described the second geotextiles plug body (19) comprises the iron wire loop through antirust processing or the stainless steel coil that are wound around non-woven geotextile II, described stopper rod (20) adopts the iron wire through antirust processing or the stainless steel wire that diameter is 6mm to make.
5. the flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function as claimed in claim 1 or 2, is characterized in that: described concrete guard wall (6) is cyclopean concrete barricade or plain concrete barricade.
6. the flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function as claimed in claim 1 or 2, is characterized in that: the thickness >=5cm of described cement sand plaster layer (7).
7. the flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function as claimed in claim 1 or 2, is characterized in that: the upper surface of described concrete floor (15) is that the gradient is 10%～60% inclined-plane.
8. the flood drainage system plugging structure with the underground spring of row and mine tailing water seepage function as claimed in claim 2, is characterized in that: the specification of described non-woven geotextile I is 400g/m2, the specification of described non-woven geotextile II is 80g/m2。
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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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