CN101660304A - Construction method of concrete panel rockfill dam slope protecting and insulating layers and construction device thereof - Google Patents
Construction method of concrete panel rockfill dam slope protecting and insulating layers and construction device thereof Download PDFInfo
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- CN101660304A CN101660304A CN200810304224A CN200810304224A CN101660304A CN 101660304 A CN101660304 A CN 101660304A CN 200810304224 A CN200810304224 A CN 200810304224A CN 200810304224 A CN200810304224 A CN 200810304224A CN 101660304 A CN101660304 A CN 101660304A
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- asphalt
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Abstract
The invention discloses a construction method of concrete panel rockfill dam slope protecting and insulating layers and a construction device thereof, wherein the method comprises the following steps:spraying asphalt on an upstream slope from top to bottom, so as to form an asphalt layer on the upstream slope, and spraying sand on the surface of the asphalt layer before the asphalt layer is cured, so as to form a sand layer on the asphalt layer; then, spraying asphalt on the sand layer from top to bottom, so as to form an upper asphalt layer on the sand layer, and spraying sand on the surfaceof the asphalt layer before the upper asphalt layer is cured, so as to form an upper sand layer on the upper asphalt layer; finally, rolling the surface of the upper sand layer to form a protecting and insulating layer with sand covered by asphalt and mutually and closely laid sand grains to finish construction. A protecting and insulating layer is formed between the upstream slope and a concretepanel through the construction on the upstream slope of a concrete panel rockfill dam, thereby avoiding the direct contact of the upstream slope and the concrete panel, reducing the interlayer restriction, decreasing the probability of panel cracking, lowering the maintenance cost of a dam and improving the reliability of the dam.
Description
Technical field
The present invention relates to a kind of job practices and device, especially a kind of job practices of concrete panel rockfill dam slope protecting and insulating layers and construction equipment thereof.
Background technology
At present; concrete rock upstream ramp face mainly is that two kinds of structures are arranged; a kind of by on the bedding material surface of forming the rockfill upstream portion through cutting the slope, rolling the slope structure that forms; another kind is at the bedding material upstream side; form extrusion side wall through extruding or tamp to form with poor cement concrete or mortar and turn over sand slurry abutment wall, form the structure on protection top layer, slope with certain thickness and intensity with template.Because the bedding material slope is loose system, need be cured protection to it, prevent to trample and wash away to destroy along sloping runoff because of construction; The concrete rock build finish after, the slope of which kind of structure all must be built one deck steel concrete panel as leakage preventing structure on the slope of upstream.But because sedimentation and deformation can take place in rockfill, buckling deformation also can take place in panel under effects such as water pressure, variations in temperature, rockfill and panel will be because interface constraints and tractive mutually like this, the probability that cracking takes place panel is increased, and the maintenance cost that causes concrete slab can not play waterproof effect, reliability reduction, dam increases.
Summary of the invention:
The objective of the invention is: job practices and construction equipment thereof that a kind of concrete panel rockfill dam slope protecting and insulating layers is provided; it can reduce the concrete rock makes the concrete slab cracking of upstream ramp face because of distortion probability; minimizing is with the maintenance cost of dam; improve the reliability of dam, to overcome the deficiencies in the prior art.
The present invention is achieved in that a kind of job practices of concrete panel rockfill dam slope protecting and insulating layers, when carrying out the concrete panel rockfill dam slope protecting and insulating layers construction, first from top to bottom sprinkling pitch on the upstream ramp face of concrete rock, on the upstream ramp face, form bitumen layer, and stucco in its surface before bitumen layer is solidified, make and form layer of sand on the bitumen layer; From top to bottom sprinkling pitch on layer of sand is forming bitumen layer on the layer of sand then, and stucco in its surface before last bitumen layer is solidified is forming layer of sand on the last bitumen layer; Roll on last layer of sand surface at last, form pitch and wrap sand material, the crowded protecting insulating layer closely of the mutual embedding of sand material particle, finish construction.
The pitch that is used for spraying is modified emulsifying asphalt, and the softening point of modified emulsifying asphalt is 53～58 ℃, and evaporated residue content is 53～56%, and the use amount of the modified emulsifying asphalt of bitumen layer is 0.6～0.85kg/m
2, the use amount of the modified emulsifying asphalt of last bitumen layer is 80～95% of a bitumen layer.
Employed sand be mixed sand, the fineness modulus of mixed sand is 3.5～4.7, the use amount of every layer of sand is 0.004～0.008m
3/ m
2
Also can be, the fineness modulus of mixed sand be 2.3～3.2, and the use amount of every layer of sand is 0.003～0.006m
3/ m
2
The construction equipment that the job practices of concrete panel rockfill dam slope protecting and insulating layers is used, it comprises band load-carrying lorry, container afterbody at the load-carrying lorry is provided with an asphalt tank, be connected with a pump in the asphalt tank bottom, pump connects the asphalt delivery pipe by a flexible pipe, and on the asphalt delivery pipe, be provided with three-way valve, be connected with the spray gun of band high-pressure hose on the side pipe head of three-way valve; Head at container is fixed with a hoist engine, and hoist engine connects the sander that can move by wire rope on the upstream ramp face, is provided with a cylinder in the sander bottom.
And on container, be fixed with a crane.
Wherein, the three-way valve on the asphalt delivery pipe is one or more, is spaced apart 12～18m between the contiguous three-way valve.
And be provided with universal wheel in asphalt delivery pipe bottom.
Also can be provided with bracing frame by on the hoist engine frame of upstream ramp face one side; The top of bracing frame is provided with the rope winding jib of a folding and unfolding wire rope, and the bracing frame bottom is provided with the heavy-duty universal wheel.
Be more preferably and be connected with a swivel joint between high-pressure hose and the spray gun.
Owing to adopted technique scheme; compared with prior art; the present invention is by constructing on the upstream ramp face of concrete rock; make and have one deck protecting insulating layer between upstream ramp face and the concrete slab; can avoid the upstream ramp face to contact with the direct of concrete slab; reduce the interlayer constraint; reduce the occurrence probability of panel cracking; minimizing is with the maintenance cost of dam; improving the reliability of dam, is that the bedding material ramp structure of loose system can play the effect of solidifying protection to the bedding material slope simultaneously.Construction equipment of the present invention simple in structure, easy to operate at the bottom of the construction cost, result of use is good.
Description of drawings
Accompanying drawing 1 is the structural representation of protecting insulating layer of the present invention;
The structural representation of accompanying drawing 2 construction equipments of the present invention;
Accompanying drawing 3 is the structural representation of spray gun 9.
Description of reference numerals
Upstream ramp face 2-bitumen layer 3-layer of sand 4-goes up bitumen layer 5-and goes up layer of sand
6-container 7-load-carrying lorry 8-asphalt tank 9-spray gun 10-pump 11-flexible pipe
12-asphalt delivery pipe 13-three-way valve 14-hoist engine 15-wire rope
16-sander 17-suspension hook 18-universal wheel 19-bracing frame 20-cylinder
21-high-pressure hose 22-rope winding jib 23-heavy-duty universal wheel 24-swivel joint
The specific embodiment
Embodiments of the invention: the job practices of concrete panel rockfill dam slope protecting and insulating layers is to implement like this: making softening point earlier is 55 ℃; evaporated residue content is 55% modified emulsifying asphalt; when carrying out the concrete panel rockfill dam slope protecting and insulating layers construction; first from top to bottom this modified emulsifying asphalt of sprinkling on the upstream ramp face 1 of concrete rock, its use amount is 0.8kg/m
2, making it on upstream ramp face 1, form bitumen layer 2, and before bitumen layer 2 is solidified, sprinkle mixed sand in its surface, the fineness modulus of mixed sand is 4, the use amount of every layer of sand is 0.006m
3/ m
2, on bitumen layer 2, form layer of sand 3; From top to bottom spraying modified mulseal on layer of sand 3 then, its use amount be bitumen layer 2 use amount 90%, forming bitumen layer 4 on the layer of sand 3, and to sprinkle fineness modulus before last bitumen layer 4 is solidified in its surface be 4.2 mixed sand, the use amount of mixed sand is 0.005m
3/ m
2, on last bitumen layer 4, form layer of sand 5; Roll on last layer of sand 5 surfaces at last, form pitch and wrap sand material, the crowded protecting insulating layer closely of the mutual embedding of sand material particle, finish construction.The structure of the protecting insulating layer of Xing Chenging as shown in Figure 1 at last.
The structure of the construction equipment that this job practices is used as shown in Figure 2, on its container 6 of load-carrying lorry 7 a fixing crane 17 is arranged, fix an asphalt tank 8 at the afterbody of container 6, the bottom of asphalt tank 8 connects pump 10, pump 10 connects asphalt delivery pipe 12 by a flexible pipe 11, asphalt delivery pipe 12 is the steel pipe composition of 25cm for commercially available diameter, in every section steel pipe bottom of asphalt delivery pipe 12 two pairs of universal wheels 18 has been installed all; And every interval 14m just installs a three-way valve 13 on asphalt delivery pipe 12, connects a high-pressure hose 21 on the side pipe head of three-way valve 13, and high-pressure hose 21 connects spray gun 9 by swivel joint 24; Head at container 6 is fixed with a hoist engine 14, and hoist engine 14 connects the sander 16 that can move by wire rope 15 on upstream ramp face 1, be provided with a pair of cylinder 20 in sander 16 bottoms; At hoist engine 14 by the frame of a side of upstream ramp face 1 at bracing frame 19 of last installation; A rope winding jib 22 that is used for folding and unfolding wire rope 15 is installed at the top of bracing frame 19, connects heavy-duty universal wheel 23 in bracing frame 19 bottoms.
In work progress, elder generation packs modified emulsifying asphalt in the asphalt tank 8, starting pump 10 delivers to the modified emulsifying asphalt suction in the asphalt delivery pipe 12 by flexible pipe 11, asphalt delivery pipe 12 is provided with a plurality of three-way valves 13, when needing to spray pitch, three-way valve more than asphalt delivery pipe 12 correspondence positions 13 is opened, the side pipe head of modified emulsifying asphalt by three-way valve 13 is transported to spray gun 9 through high-pressure hose 21 and sprays, and close remaining three-way valve 13 are the lower ends that accumulate in asphalt delivery pipe 12 for fear of pitch, do not solidify because temporarily do not flow, cause the obstruction of asphalt delivery pipe 12, pitch spraying operation hand is with spray gun 9 moving on upstream ramp face 1 from top to bottom, pitch is sprayed at band with certain width of formation on the upstream ramp face 1, this band after hours, load-carrying lorry 7 moves along axis of dam direction, and the universal wheel 18 drive asphalt delivery pipes 12 by asphalt delivery pipe 12 bottoms move on axis of dam direction, and then spray another work plane, because asphalt delivery pipe 12 bottoms are provided with universal wheel 19, moving of asphalt delivery pipe 12 will be easy to and safety; High-pressure hose 21 both can bear the pressure in the pipe, also can make things convenient for the staff to spur high-pressure hose 21 and carry out mobile working, and between high-pressure hose 21 and spray gun 9, be provided with swivel joint 24, can avoid in the course of the work owing to rotating the situation that spray gun 9 is twisted high-pressure hose 21; The sand material is packed in the hopper of sander 16 by crane 17, start sander 16 and sand is spread uniformly on the work plane that is sprayed with pitch; Be provided with cylinder 20 in the bottom of sand machine, when wire rope 15 drags sander 16 when the sand face moves up and down, cylinder 20 can be made muller and use, and the sand material that spreads out and cover on the upstream slope 1 is rolled, close to obtain the mutual embedding jam-packed of sand grains, and the deck of process pitch gluing.But because the weight of sander 16 when loading onto the sand material is very big, when the work general work, load-carrying lorry 7 there is very big side direction pulling force, in order to prevent that 7 inclinations of load-carrying lorry from covering, just at hoist engine 14 by the frame of upstream ramp face 1 one sides at bracing frame 19 of last installation; The wire rope 15 that hoist engine 14 is drawn be connected with sander 16, and the heavy-duty universal that is provided with in bracing frame 19 bottoms wheel 23 is moving with car for convenience of bracing frame 19 earlier through rope winding jib 22 again.Suspension hook 17 can be carried operation with weights such as pitch, sand material and sanders 16.
Its application property is good but the present invention selects for use modified emulsifying asphalt to be, the technical requirement of softening point and evaporated residue content can guarantee construction quality, in work progress, if the use amount of modified emulsifying asphalt is too small, then can not satisfy bonding requirements, but when use amount is excessive, because working face is an inclined-plane, therefore under the too much situation of pitch, trickling downwards automatically, thus cause waste.
Directly form if the upstream ramp face 1 of concrete rock is a bedding material, its surface is softer, selects the bigger mixed sand of fineness modulus for use, sand is squeezed be embedded in to improve cementability in the upstream ramp face 1 and have certain intensity; If when upstream ramp face 1 is an extrusion side wall or when turning over sand slurry abutment wall, its surface strength is bigger, has small holes, selects the less mixed sand of fineness modulus for use, can fill up hole, increases bonding and sealing effect.The use amount of sand is according to the fineness modulus difference, the scope of selecting is also inequality, the present invention uses by reality and obtains the scope of selecting for use of two kinds of sand consumptions under the fineness modulus, if lacked then can not cover the work plane that sprays mulseal fully, causes construction quality bad; If many will causing to bond together between the sand grains because of mulseal can not wrap sand grains fully.
Claims (10)
1. the job practices of a concrete panel rockfill dam slope protecting and insulating layers, it is characterized in that: when carrying out the concrete panel rockfill dam slope protecting and insulating layers construction, first from top to bottom sprinkling pitch on the upstream ramp face (1) of concrete rock, go up formation bitumen layer (2) at upstream ramp face (1), and stucco in its surface before bitumen layer (2) is solidified, go up formation layer of sand (3) in bitumen layer (2); From top to bottom sprinkling pitch on layer of sand (3) makes and forms bitumen layer (4) on the layer of sand (3) then, and stucco in its surface before last bitumen layer (4) is solidified forms layer of sand (5) on last bitumen layer (4); Roll on last layer of sand (5) surface at last, form pitch and wrap sand material, the crowded protecting insulating layer closely of the mutual embedding of sand material particle, finish construction.
2. according to the job practices of right 1 described concrete panel rockfill dam slope protecting and insulating layers; it is characterized in that: the pitch that is used for spraying is modified emulsifying asphalt; the softening point of modified emulsifying asphalt is 53～58 ℃; evaporated residue content is 53～56%, and the use amount of the modified emulsifying asphalt of bitumen layer (2) is 0.6～0.85kg/m
2, the use amount of the modified emulsifying asphalt of last bitumen layer (4) is 80～95% of a bitumen layer (2).
3. according to the job practices of right 1 described concrete panel rockfill dam slope protecting and insulating layers, it is characterized in that: the sand that uses be mixed sand, the fineness modulus of mixed sand is 3.5～4.7, the use amount of every layer of sand is 0.004～0.008m3/m
2
4. according to the job practices of right 1 described concrete panel rockfill dam slope protecting and insulating layers, it is characterized in that: the sand that uses is mixed sand, and the fineness modulus of mixed sand is 2.3～3.2, and the use amount of every layer of sand is 0.003～0.006m3/m
2
5. the used construction equipment of the job practices of a concrete panel rockfill dam slope protecting and insulating layers as claimed in claim 1, it comprises load-carrying lorry (7), it is characterized in that: container (6) afterbody in load-carrying lorry (7) is provided with an asphalt tank (8), be connected with a pump (10) in asphalt tank (8) bottom, pump (10) connects asphalt delivery pipe (12) by a flexible pipe (11), and on asphalt delivery pipe (12), be provided with three-way valve (13), be connected with the spray gun (9) of band high-pressure hose (21) on the side pipe head of three-way valve (13); Head at container (6) is fixed with a hoist engine (14), and hoist engine (14) connects one by wire rope (15) can go up the sander (16) that moves at upstream ramp face (1), is provided with a pair of cylinder (20) in sander (16) bottom.
6. according to right 5 described construction equipments, it is characterized in that: on container (6), be fixed with a crane (17).
7. according to right 5 described construction equipments, it is characterized in that: the three-way valve (13) on asphalt delivery pipe (12) is one or more, is spaced apart 12～18m between the contiguous three-way valve (13).
8. according to right 5 described construction equipments, it is characterized in that: be provided with universal wheel (18) in asphalt delivery pipe (12) bottom.
9. according to right 5 described construction equipments, it is characterized in that: be provided with bracing frame (19) by on hoist engine (14) frame of upstream ramp face (1) one side; The top of bracing frame (19) is provided with the rope winding jib (22) of a folding and unfolding wire rope (15), and bracing frame (19) bottom is provided with heavy-duty universal wheel (23).
10. according to right 5 described construction equipments, it is characterized in that: be connected with a swivel joint (24) between high-pressure hose (21) and the spray gun (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810304224A CN101660304A (en) | 2008-08-27 | 2008-08-27 | Construction method of concrete panel rockfill dam slope protecting and insulating layers and construction device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810304224A CN101660304A (en) | 2008-08-27 | 2008-08-27 | Construction method of concrete panel rockfill dam slope protecting and insulating layers and construction device thereof |
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| CN101660304A true CN101660304A (en) | 2010-03-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831889A (en) * | 2010-05-05 | 2010-09-15 | 河海大学 | Anti-seismic combination slab for earth and rockfill dam and construction method thereof |
| CN103397636A (en) * | 2013-08-21 | 2013-11-20 | 北京华石纳固科技有限公司 | Vertical transportation system for mountain stone and transportation method of vertical transportation system |
| CN109356000A (en) * | 2018-10-31 | 2019-02-19 | 中铁四局集团第工程有限公司 | A kind of the pitch adhesion coating dispensing device and method of circuit curved surface |
| CN110306489A (en) * | 2019-06-20 | 2019-10-08 | 中国水利水电第四工程局有限公司 | A kind of oily two sand construction technologies of dam overmolded mortar slope surface two |
| CN110965527A (en) * | 2019-11-14 | 2020-04-07 | 湖南省汇杰勘测设计股份有限公司 | Construction method of waterproof layer of upstream panel of concrete panel rock-fill dam |
-
2008
- 2008-08-27 CN CN200810304224A patent/CN101660304A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831889A (en) * | 2010-05-05 | 2010-09-15 | 河海大学 | Anti-seismic combination slab for earth and rockfill dam and construction method thereof |
| CN103397636A (en) * | 2013-08-21 | 2013-11-20 | 北京华石纳固科技有限公司 | Vertical transportation system for mountain stone and transportation method of vertical transportation system |
| CN103397636B (en) * | 2013-08-21 | 2016-03-09 | 北京华石纳固科技有限公司 | A kind of massif building stones vertical transport system and transportation resources thereof |
| CN109356000A (en) * | 2018-10-31 | 2019-02-19 | 中铁四局集团第工程有限公司 | A kind of the pitch adhesion coating dispensing device and method of circuit curved surface |
| CN109356000B (en) * | 2018-10-31 | 2024-03-22 | 中铁四局集团第一工程有限公司 | Asphalt adhesive layer spreading device and method for curved surface of loop |
| CN110306489A (en) * | 2019-06-20 | 2019-10-08 | 中国水利水电第四工程局有限公司 | A kind of oily two sand construction technologies of dam overmolded mortar slope surface two |
| CN110965527A (en) * | 2019-11-14 | 2020-04-07 | 湖南省汇杰勘测设计股份有限公司 | Construction method of waterproof layer of upstream panel of concrete panel rock-fill dam |
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Open date: 20100303 |