CN110820748A - Temperature control device for roller compacted concrete and manufacturing method thereof - Google Patents
Temperature control device for roller compacted concrete and manufacturing method thereof Download PDFInfo
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- CN110820748A CN110820748A CN201911002483.8A CN201911002483A CN110820748A CN 110820748 A CN110820748 A CN 110820748A CN 201911002483 A CN201911002483 A CN 201911002483A CN 110820748 A CN110820748 A CN 110820748A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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Abstract
The application provides roller compacted concrete's temperature control device and preparation method thereof, temperature control device includes first anchorage, second anchorage, first haulage cable, second haulage cable and bearing cable, and first anchorage and second anchorage set up respectively on controlling the bank slope, and the bearing cable is fixed between first anchorage and second anchorage, and the bearing cable is fixed and is provided with first pulley and second pulley, and first haulage cable and second haulage cable all are provided with a plurality of bearing cable gyro wheels, and the bearing cable gyro wheel sets up on the bearing cable with sliding, and first haulage cable is connected with first hoist engine through first pulley, and the second haulage cable is connected with the second hoist engine through the second pulley. The temperature control device can enable the spray head to be close to the working surface as much as possible according to the maximum height of the roller compacted concrete bin surface working machine, and a low-temperature water vapor atomization layer with a certain thickness is formed by the spray head to resist the temperature rise caused by direct irradiation of the sun on the concrete surface.
Description
Technical Field
The invention relates to the technical field of concrete damming, in particular to a temperature control device for roller compacted concrete and a manufacturing method thereof.
Background
Roller compacted concrete is a hard concrete, usually adopts the continuous pouring of logical storehouse thin layer, is more easily influenced by factors such as ambient temperature, relative humidity, weather than normal concrete. According to the construction specification of the roller compacted concrete, when the daily average temperature is higher than 25 ℃ or lower than 3 ℃, corresponding measures are required to be taken for constructing the roller compacted concrete, and some projects mostly adopt a method of stopping constructing the roller compacted concrete in high-temperature seasons and low-temperature seasons.
When the raw material of the roller compacted concrete is selected, high-quality fly ash with the water requirement less than or equal to 90 percent is usually selected, phosphorite slag is added to replace the cement dosage, a high-temperature high-efficiency retarding water reducing agent is adopted, the cement hydration reaction time is delayed, the cement hydration heat peak value is reduced, the cement hydration heat peak value time of the cement is delayed, and the hydration heat of the early stage is reduced; the cement with lower calorific value is adopted, and the unit cement consumption is reduced, so that the technical research result is nearly mature at present; reducing the mixing temperature of the concrete raw materials in a high-temperature season, adopting heat preservation facilities in the aspects of aggregate stacking and transportation, and displaying by engineering actual measurement data, wherein after an aggregate sunscreen shed is erected and the stacking height is increased, the aggregate temperature can be reduced by 3-4 ℃ compared with that before the aggregate is erected; the sand and stone screening system adopts measures such as building a finished product material pile sun-proof shed and spraying and cooling large aggregates, and can comprehensively reduce the temperature of the coarse aggregates by 5-8 ℃ and reduce the temperature of the concrete leaving machine by about 3 ℃; the concrete transportation process adopts covering to reduce the temperature rise of the concrete, the measures for controlling the temperature rise of the concrete in high-temperature seasons are easy to implement, the corresponding control data change difference is small, and the lifting space is small. But corresponding roller compacted concrete storehouse face temperature control is in the aspect of "big environment of high temperature, storehouse face microclimate" of implementation, because of the not enough of traditional technological means, has more defect: because the area of the roller compacted concrete bin surface is large, the spray cooling can not realize full coverage on the bin surface, so that the roller compacted concrete is mostly poured in a thin layer pouring mode, and the construction speed of the roller compacted concrete is influenced; the heat insulation material is covered on the surface of the roller compacted concrete, so that the working procedures of warehouse construction and the labor intensity of manual operation are increased, and the quality risk of incompact interlayer combination caused by dehydration and initial setting of lower concrete among roller compacted concrete layers is increased; in order to deal with the risk of interlayer combination of the roller compacted concrete, the roller compacted concrete rich in cementing materials is produced, and the construction cost of the roller compacted concrete is increased; the cooling water pipe is embedded in the concrete and is filled with cold water for forced cooling, so that the construction design of the warehouse surface is complicated, and once the cooling water pipe leaks, the interlayer combination is damaged (some foreign projects definitely cannot adopt the process); the pouring is interrupted in high-temperature seasons, and the construction quality is affected by cold joints caused by initial setting before concrete rolling; concrete transportation vehicles are queued and put into a warehouse under the high-temperature condition, so that the slump loss of the concrete is caused, and the working degree of the concrete is influenced.
For example, the chinese patent application with application number 201710979015.0 discloses a roller compacted concrete dam and a construction method thereof, in the technical scheme, the roller compacted concrete dam is divided into a dam upstream surface area, a dam internal area and a dam downstream surface area, each area respectively adopts low-plasticity low-hydration-heat graded concrete, third-grade compacted concrete and metamorphosis concrete, and a comprehensive temperature control measure is adopted for the dam internal area, each concrete is doped with a hydration heat inhibitor, the highest temperature of the dam is effectively controlled, and a cooling water pipe does not need to be buried in the dam; however, the construction scheme still comprises staggered high-temperature time periods, so that the rapid construction advantage of the roller compacted concrete is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a roller compacted concrete temperature control device capable of being cooled by spraying and a manufacturing method thereof.
The technical scheme for solving the problems is as follows: the temperature control device comprises a first anchorage, a second anchorage, a first traction cable, a second traction cable and a bearing cable, wherein the first anchorage and the second anchorage are respectively arranged on left and right bank slopes, the bearing cable is fixed between the first anchorage and the second anchorage, the bearing cable is fixedly provided with a first pulley and a second pulley, the first traction cable and the second traction cable are respectively provided with a plurality of bearing cable rollers, the bearing cable rollers are slidably arranged on the bearing cable, the first traction cable is connected with a first winch through the first pulley, the second traction cable is connected with a second winch through the second pulley, the bearing cable rollers are provided with a spray head crane in a hanging manner, the spray head crane is provided with a spray head, the spray head is provided with a double-pipe air-water mixer, and the double-pipe air-water mixer is connected with an air supply system and a water supply system.
Further, the shower nozzle crane includes electric hoist, hoist cable and truss, and electric hoist is connected with the carrier cable gyro wheel through connecting pin axle, and the truss is connected with electric hoist through the hoist cable.
Further, the diameter of the carrier cable is 8 mm.
Further, the double-pipe air-water mixer is connected with an air supply system and a water supply system through PVC pipes; the water supply system is a circulating refrigeration water supply system.
Further, the double-pipe air-water mixer comprises a mixing cavity, the mixing cavity comprises a first mixing chamber and a second mixing chamber which are formed by separating a partition plate, the partition plate is provided with a funnel-shaped connecting channel to communicate the first mixing chamber with the second mixing chamber, the first mixing chamber is provided with an inlet pipe and an inlet pipe, the second mixing chamber is provided with a funnel-shaped outlet channel, and the outlet channel can be connected with a spray header.
Further, the shower head includes the swivel sleeve, nozzle holder and rotary rod, the swivel sleeve sets up the upper end at the rotary rod, the lower extreme of rotary rod sets up on nozzle holder with rotating, the swivel sleeve is provided with swivel sleeve water inlet and a plurality of water branch, the rotary rod is provided with the rotary rod cavity of intaking, swivel sleeve water inlet and rotary rod cavity of intaking are linked together, just be formed with a set of water guide piece on the inner wall of swivel sleeve water inlet at the swivel sleeve, nozzle holder is provided with the water inlet that can be connected with dual-pipe wind-water mixer, the water inlet is provided with the screw thread of fixing mutually with dual-pipe wind-water mixer.
Furthermore, the water outlet branch is connected with the water outlet pipe through threads, and the relative position between the water outlet pipe and the water outlet branch can be adjusted.
The construction method of the temperature control device comprises the following steps:
step 2.1, transporting the bearing cable to the left dam abutment, enabling the bearing cable to pass through the first anchorage, and then throwing the first nylon rope from the left dam abutment to the river bed after the first nylon rope is connected with the bearing cable; connecting a rope head at one side of a second nylon rope with a winch at a right dam abutment through the second anchorage by using the second nylon rope, throwing the rope head at the other side of the second nylon rope to a riverbed, connecting the first nylon rope with the second nylon rope, pulling up the bearing rope to a position between the first anchorage and the second anchorage by using a winch, and finally fixing the bearing rope to the first anchorage and the second anchorage;
step 2.2, fixing a first pulley and a second pulley on the bearing cable by adopting a lead wire in the middle of the bearing cable, and taking the first pulley and the second pulley as fixed ends of a first traction cable and a second traction cable respectively;
step 2.3, respectively arranging a plurality of marks on the first traction cable and the second traction cable, and connecting each mark on the first traction cable and the second traction cable with a bearing cable roller in the sequence from the center of the riverbed to the bank;
step 2.4, connecting the first traction cable and the second traction cable with a first winch arranged on the left dam abutment and a second winch arranged on the right dam abutment respectively, and forming a closed traction loop with a first pulley and a second pulley arranged in the middle of the bearing cable respectively;
step 3, installing a spray head lifting frame, installing the spray head lifting frame on the carrier cable roller by using a connecting pin shaft, wherein the spray head lifting frame comprises an electric hoist, a sling and a truss, the electric hoist is connected with the carrier cable roller by the connecting pin shaft, and the truss is connected with the electric hoist by the sling;
step 4, connecting the double-pipe air-water mixer with a spray header, and arranging the spray header on the truss;
and 5: and connecting the air-water mixer with an air supply system and a water supply system.
Furthermore, in the step 3, two 2.5cm angle steels are adopted to manufacture a framework of the truss, the height of the truss is 50cm, and the ribs between the two angle steels adopt phi 12 steel bars, so that the steel bars are welded to form a zigzag structure.
Further, in step 4, three spray heads are arranged on each truss at intervals of 10m, each spray head on the same truss is relatively independent, and the spray heads at the corresponding positions of the adjacent trusses are connected by adopting PVC water pipes and air pipes, so that a head-to-tail connection arrangement form of three groups of parallel spray heads between the adjacent trusses is formed; when the spray headers are connected in series, in order to prevent the traction cable from generating tension on the water pipe or the air pipe during operation, the lengths of the water pipe and the air pipe between the adjacent spray headers are not less than 11 m.
Further, in step 5, a 40m dam is respectively arranged on the left dam abutment and the right dam abutment3The air compressor supplies air to the dual-pipe air-water mixer, and the water supply pipeline is provided with water bubbles and a branch pipe to supply water to the dual-pipe air-water mixer.
Further, step 1 specifically comprises:
step 1.1, in order to prevent the anchor end bedrock from loosening and influence the anchor safety, before the anchor is fixed by an anchor bolt, consolidation grouting is carried out on an anchor bolt hole, and after the standard of consolidation grouting is met, grouting is carried out in the anchor bolt hole by using 0.5:1 thick slurry until the slurry return concentration of the orifice of the anchor bolt hole is consistent with the slurry inlet concentration;
step 1.2, respectively arranging a first anchorage and a second anchorage at the left dam abutment and the right dam abutment of a dam site area, and anchoring each anchorage by adopting 3-5 anchor bolts with the diameter of 25mm, wherein the rock-entering depth of each anchor bolt is not less than 5m, and the pullout resistance of each anchor bolt is not less than 8 t;
step 1.3, manually mixing cement mud balls, pressing the cement mud balls into the anchor bolt holes by no less than 30cm, and firmly fixing the gaps between the anchor bolts and the hole walls by steel wedges;
1.4, leveling the surface of the bedrock by adopting 1:2 mortar; anchoring the steel plate welded with the anchor ring on the bedrock by using bolts and nuts;
and step 1.5, in order to prevent the steel plate and the anchor ring from being corroded, painting the anchor ring with anticorrosive epoxy paint for two times, and pouring concrete with the thickness of 10-20cm on the steel plate for protection.
Compared with the prior art, the invention has the beneficial effects that:
1. the temperature control device can form a fine rain fog state in high altitude, and realizes no dead angle full coverage on the roller compacted concrete bin surface.
2. By controlling the lengths of the electric hoist and the sling rope on the truss, the truss is enabled to approach the working surface on the premise of not influencing the roller compacted concrete construction operation, and the temperature of the concrete surface after the roller compacted concrete is paved, rolled and formed is raised due to direct irradiation of the sun.
3. The bearing cable idler wheels arranged on the bearing cables realize the back-and-forth movement of each spray head lifting frame above the working face, so that the spraying area can be adjusted at any time, and the optimal coverage can be realized in an adjustable manner along with the roller compacted concrete construction.
4. The spray head capable of spraying water in a rotating mode is adopted, water supply pressure is adjusted by combining water supply equipment, and mist water drops sprayed by the spray head form different posture combinations, so that the optimal spraying and sprinkling effect is achieved.
5. Because the first bearing cable and the second bearing cable are respectively used on the left bank and the right bank, the opening and closing movable type spraying form is formed on the two sides of the left bank and the right bank, and the maintenance and the overhaul of a spraying system are convenient.
6. The spray head lifting frame for hanging the spray head is designed to be capable of lifting, so that the diameter of water spray mist can be reduced by utilizing the space height and wind power during lifting, and water accumulation on a working surface is prevented.
Drawings
Fig. 1 is a schematic structural view of the temperature control device.
Fig. 2 is a schematic structural view of the head crane.
Fig. 3 is a structural schematic diagram of the dual-pipe air-water mixer.
Fig. 4 is a schematic structural diagram of the spray header.
Description of reference numerals: 1-a first anchorage; 2-a second anchorage; 3-a first traction cable; 4-a second traction cable; 5-a carrying cable; 51-a first pulley; 52-a second pulley; 6-carrying cable rollers; 8-a first winch; 9-a second hoist; 10-a spray head lifting frame; 101-electric hoist; 102-a sling; 103-truss; 104-connecting pin shafts; 11-double-pipe air-water mixer; 111-a mixing chamber; 112-a separator; 113-a first mixing chamber; 114-a second mixing chamber; 115-connecting channels; 116-a water inlet pipe; 117-air inlet pipe; 118-a water outlet channel; 12-a shower head; 121-a rotating sleeve; 122-a nozzle holder; 123-rotating rod; 124-rotating sleeve water inlet; 125-water outlet branch; 126-rotating rod water inlet cavity; 127-water guiding sheet; 128-water inlet; 129-water outlet pipe.
Detailed Description
As shown in fig. 1, 2, 3 and 4, the temperature control device includes a first anchor 1, a second anchor 2, a first traction cable 3, a second traction cable 4 and a bearing cable 5, the first anchor 1 and the second anchor 2 are respectively arranged on left and right bank slopes, the bearing cable 5 is fixed between the first anchor 1 and the second anchor 2, the bearing cable 5 is fixedly provided with a first pulley 51 and a second pulley 52, the first traction cable 3 and the second traction cable 4 are both provided with a plurality of bearing cable rollers 6, the bearing cable rollers 6 are slidably arranged on the bearing cable 5, the first traction cable 3 is connected with a first hoisting machine 8 through the first pulley 51, the second traction cable 4 is connected with a second hoisting machine 9 through the second pulley 52, the bearing cable rollers 6 are provided with a spray head 10 in a hanging manner, the spray head 10 is provided with a spray head 12, the spray head 12 is provided with a double-pipe air-water mixer 11, the dual-pipe air-water mixer 11 is connected to an air supply system (not shown) and a water supply system (not shown). In order to ensure the spraying effect, three groups of same temperature control devices can be arranged on the left bank slope and the right bank slope as required, and the bearing cable 5 is arranged at a position which is not less than 30m above the highest working surface of the roller compacted concrete.
Further, as shown in fig. 2, the shower head crane 10 includes an electric hoist 101, a sling 102 and a truss 103, the electric hoist 101 is connected with the carrier cable roller 6 through a connecting pin 104, and the truss 103 is connected with the electric hoist 101 through the sling 102. Truss 103 is a steel truss structure that facilitates installation of multiple showerheads 12.
Further, the diameter of the carrier cable 5 is 8 mm.
Further, the double-pipe air-water mixer 11 is connected with an air supply system and a water supply system through PVC pipes; the water supply system is a circulating refrigeration water supply system.
Further, as shown in fig. 3, the dual-pipe air-water mixer 11 includes a mixing chamber 111, the mixing chamber 111 includes a first mixing chamber 113 and a second mixing chamber 114 partitioned by a partition 112, the partition 112 is provided with a funnel-shaped connecting passage 115 to communicate the first mixing chamber 113 with the second mixing chamber 114, the first mixing chamber 113 is provided with an inlet pipe 116 and an inlet pipe 117, the second mixing chamber 114 is provided with a funnel-shaped outlet passage 118, and the outlet passage 118 can be connected with the shower head 12 in fig. 4.
Further, as shown in fig. 4, the shower head 12 includes a rotary sleeve 121, a nozzle support 122 and a rotary rod 123, the rotary sleeve 121 is disposed at the upper end of the rotary rod 123, the lower end of the rotary rod 123 is rotatably disposed on the nozzle support 122, the rotary sleeve 121 is provided with a rotary sleeve water inlet 124 and a plurality of water outlet branches 125, the rotary rod 123 is provided with a rotary rod water inlet cavity 126, the rotary sleeve water inlet 124 is communicated with the rotary rod water inlet cavity 126, a set of water guide sheets 127 is formed on the inner wall of the rotary sleeve 121 facing the rotary sleeve water inlet 124, the nozzle support 122 is provided with a water inlet 128 capable of being connected with the dual-duct air-water mixer 11, and the water inlet 128 is provided with threads fixed to the dual-duct air-water. Under the effect of rivers, swivel sleeve 121 can rotate, makes rivers rotatory the spraying all around, effectively improves the utilization ratio of water.
Further, the water outlet branch 125 is connected with the water outlet pipe 129 through a screw thread, and the relative position between the water outlet pipe 129 and the water outlet branch 125 can be adjusted.
The construction method of the temperature control device comprises the following steps:
step 2.1, transporting the bearing cable 5 to a left dam abutment, enabling the bearing cable 5 to pass through the first anchorage 1, and then throwing a first nylon rope from the left dam abutment to a river bed after the first nylon rope is connected with the bearing cable 5; connecting a rope head at one side of a second nylon rope with a winch at a right dam abutment through a second anchorage 2 by using the second nylon rope, throwing the rope head at the other side of the second nylon rope to a riverbed, connecting the first nylon rope with the second nylon rope, pulling up a bearing rope 5 to a position between the first anchorage 1 and the second anchorage 2 by using a winch, and finally fixing the bearing rope 5 to the first anchorage 1 and the second anchorage 2;
step 2.2, fixing a first pulley 51 and a second pulley 52 on the bearing cable 5 by adopting a lead wire in the middle of the bearing cable 5, and taking the first pulley 51 and the second pulley 52 as the fixed ends of the first traction cable 3 and the second traction cable 4 respectively;
step 2.3, respectively arranging a plurality of marks on the first traction cable 3 and the second traction cable 4, and connecting each mark on the first traction cable 3 and the second traction cable 4 with a bearing cable roller 6 in a sequence from the center of the riverbed to the bank;
step 2.4, connecting the first traction cable 3 and the second traction cable 4 with a first winch 8 arranged on the left dam abutment and a second winch 9 arranged on the right dam abutment respectively, and forming a closed traction loop with a first pulley 51 and a second pulley 52 arranged in the middle of the bearing cable 5 respectively;
step 3, installing a spray head lifting frame 10, installing the spray head lifting frame 10 on the carrier cable idler wheel 6 by using a connecting pin 104, wherein the spray head lifting frame 10 comprises an electric hoist 101, a lifting cable 102 and a truss 103, the electric hoist 101 is connected with the carrier cable idler wheel 6 through the connecting pin 104, and the truss 103 is connected with the electric hoist 101 through the lifting cable 102;
step 4, connecting the dual-pipe air-water mixer 11 with a spray header 12, and arranging the spray header 12 on the truss 103;
and 5: the air-water mixer 11 is connected to an air supply system and a water supply system.
Furthermore, in the step 3, two 2.5cm angle steels are adopted to manufacture the framework of the truss 103, the height of the truss 103 is 50cm, and the ribs between the two angle steels adopt phi 12 steel bars, so that the steel bars are welded to form a zigzag structure.
Further, in step 4, three spray heads are arranged on each truss at intervals of 10m, each spray head on the same truss is relatively independent, and the spray heads at the corresponding positions of the adjacent trusses are connected by adopting PVC water pipes and air pipes, so that a head-to-tail connection arrangement form of three groups of parallel spray heads between the adjacent trusses is formed; when the spray headers are connected in series, in order to prevent the traction cable from generating tension on the water pipe or the air pipe during operation, the lengths of the water pipe and the air pipe between the adjacent spray headers are not less than 11 m.
Further, in step 5, a 40m dam is respectively arranged on the left dam abutment and the right dam abutment3The air compressor supplies air to the dual-pipe air-water mixer 11, and the water supply pipeline is provided with water bubbles and a branch pipe to supply water to the dual-pipe air-water mixer 11.
Further, step 1 specifically comprises:
step 1.1, in order to prevent the anchor end bedrock from loosening and influence the anchor safety, before the anchor is fixed by an anchor bolt, consolidation grouting is carried out on an anchor bolt hole, and after the standard of consolidation grouting is met, grouting is carried out in the anchor bolt hole by using 0.5:1 thick slurry until the slurry return concentration of the orifice of the anchor bolt hole is consistent with the slurry inlet concentration;
step 1.2, respectively arranging a first anchorage 1 and a second anchorage 2 on the left dam abutment and the right dam abutment of a dam site area, and anchoring each anchorage by adopting 3-5 anchor bolts with the diameter of 25mm, wherein the rock-entering depth of each anchor bolt is not less than 5m, and the pullout resistance of each anchor bolt is not less than 8 t;
step 1.3, manually mixing cement mud balls, pressing the cement mud balls into the anchor bolt holes by no less than 30cm, and firmly fixing the gaps between the anchor bolts and the hole walls by steel wedges;
1.4, leveling the surface of the bedrock by adopting 1:2 mortar; anchoring the steel plate welded with the anchor ring on the bedrock by using bolts and nuts;
and step 1.5, in order to prevent the steel plate and the anchor ring from being corroded, painting the anchor ring with anticorrosive epoxy paint for two times, and pouring concrete with the thickness of 10-20cm on the steel plate for protection.
Claims (9)
1. The utility model provides a roller compacted concrete's temperature control device which characterized in that: comprises a first anchorage, a second anchorage, a first traction cable, a second traction cable and a bearing cable, wherein the first anchorage and the second anchorage are respectively arranged on a left bank slope and a right bank slope, the bearing cable is fixed between the first anchorage and the second anchorage and is fixedly provided with a first pulley and a second pulley, the first traction cable and the second traction cable are both provided with a plurality of bearing cable rollers, the bearing cable rollers are arranged on the bearing cables in a sliding manner, the first traction rope is connected with the first winch through the first pulley, the second traction rope is connected with the second winch through the second pulley, the bearing cable roller is provided with a spray head lifting frame in a hanging manner, the spray head lifting frame is provided with a spray head, the spray header is provided with a double-pipe air-water mixer, and the double-pipe air-water mixer is connected with an air supply system and a water supply system.
2. The roller compacted concrete temperature control device according to claim 1, wherein: the shower nozzle crane includes electric hoist, hoist cable and truss, the electric hoist through connecting pin axle with the carrier cable gyro wheel is connected, the truss passes through the hoist cable with the electric hoist is connected.
3. The roller compacted concrete temperature control device according to claim 1, wherein: the double-pipe air-water mixer is connected with an air supply system and a water supply system through PVC pipes; the water supply system is a circulating refrigeration water supply system.
4. The roller compacted concrete temperature control device according to claim 1, wherein: the double-pipe air-water mixer comprises a mixing cavity, wherein the mixing cavity comprises a first mixing chamber and a second mixing chamber which are formed by separating a partition plate, the partition plate is provided with a funnel-shaped connecting channel for communicating the first mixing chamber with the second mixing chamber, the first mixing chamber is provided with an inlet pipe and an air inlet pipe, the second mixing chamber is provided with a funnel-shaped water outlet channel, and the water outlet channel is connected with a spray head.
5. The roller compacted concrete temperature control device according to claim 1, wherein: the shower head includes swivel mount, nozzle support and rotary rod, the swivel mount sets up the upper end of rotary rod, the lower extreme of rotary rod sets up with rotating on the nozzle support, the swivel mount is provided with swivel mount water inlet and a plurality of water branch, the rotary rod is provided with the rotary rod cavity of intaking, the swivel mount water inlet with the rotary rod cavity of intaking is linked together the swivel mount is just right be formed with a set of water guide piece on the inner wall of swivel mount water inlet, the nozzle support be provided with can with the water inlet that double-barreled pipe wind-water mixer is connected, the water inlet is provided with the screw thread so that it is fixed mutually with double-barreled pipe wind-water mixer.
6. The roller compacted concrete temperature control device according to claim 5, wherein: the water outlet branch is connected with the water outlet pipe through threads.
7. A method for manufacturing the temperature control device is characterized by comprising the following steps:
step 1, respectively fixing a first anchorage and a second anchorage at the left dam abutment and the right dam abutment of a dam site area;
step 2, constructing a bearing cable, a first traction cable and a second traction cable between the first anchorage and the second anchorage;
step 2.1, the bearing cable is conveyed to the left dam abutment to enable the bearing cable to pass through the first anchorage, then the first nylon rope and the bearing cable are used, and the first nylon rope is thrown to a river bed from the left dam abutment after connection is completed; connecting a rope head at one side of a second nylon rope with a winch at a right dam abutment through the second anchorage by using the second nylon rope, throwing the rope head at the other side of the second nylon rope to a riverbed, connecting the first nylon rope with the second nylon rope, pulling up the bearing rope to a position between the first anchorage and the second anchorage by using a winch, and finally fixing the bearing rope to the first anchorage and the second anchorage;
step 2.2, fixing a first pulley and a second pulley on the carrier cable by adopting a lead wire in the middle of the carrier cable, respectively using the first pulley and the second pulley as fixed ends of a first traction cable and a second traction cable, and installing carrier cable rollers on the carrier cable;
step 2.3, respectively arranging a plurality of marks on the first traction cable and the second traction cable, and connecting each mark on the first traction cable and the second traction cable with a bearing cable roller in sequence from the center of the riverbed to the bank edge and fixing firmly;
step 2.4, connecting the first traction cable and the second traction cable with a first winch arranged on the left dam abutment and a second winch arranged on the right dam abutment respectively, and forming a closed traction cable loop with a first pulley and a second pulley arranged in the middle of the bearing cable respectively;
step 3, installing a spray head lifting frame, installing the spray head lifting frame on the carrier cable roller by using a connecting pin shaft, wherein the spray head lifting frame comprises an electric hoist, a sling and a truss, the electric hoist is connected with the carrier cable roller by the connecting pin shaft, and the truss is connected with the electric hoist by the sling;
step 4, connecting the double-pipe air-water mixer with a spray header, and arranging the spray header on the truss;
and 5, connecting the air-water mixer with an air supply system and a water supply system.
8. The method of claim 7, wherein: in step 4, three spray heads are arranged on each truss at intervals of 10m, each spray head on the same truss is relatively independent, and the spray heads at the corresponding parts of the adjacent trusses are connected by adopting PVC water pipes and air pipes, so that a head-to-tail arrangement form of three groups of parallel spray heads between the adjacent trusses is formed; when the spray headers are connected in series, the lengths of the air pipes and the water pipes between the adjacent spray headers are not less than 11 m.
9. The method of claim 7, wherein: the step 1 specifically comprises:
step 1.1, in order to prevent the anchor end bedrock from loosening and influence the anchor safety, before the anchor is fixed by an anchor bolt, consolidation grouting is carried out on an anchor bolt hole, and after the standard of consolidation grouting is met, grouting is carried out in the anchor bolt hole by using 0.5:1 thick slurry until the slurry return concentration of the orifice of the anchor bolt hole is consistent with the slurry inlet concentration;
step 1.2, respectively arranging a first anchorage and a second anchorage at the left dam abutment and the right dam abutment of a dam site area, and anchoring each anchorage by adopting 3-5 anchor bolts with the diameter of 25mm, wherein the rock-entering depth of each anchor bolt is not less than 5m, and the pullout resistance of each anchor bolt is not less than 8 t;
step 1.3, manually mixing cement mud balls, pressing the cement mud balls into the anchor bolt holes by no less than 30cm, and firmly fixing the gaps between the anchor bolts and the hole walls by steel wedges;
1.4, leveling the surface of the bedrock by adopting 1:2 mortar; anchoring the steel plate welded with the anchor ring on the bedrock by using bolts and nuts;
and step 1.5, in order to prevent the steel plate and the anchor ring from inducing corrosion, painting the anchor ring with anticorrosive epoxy paint for two times, and pouring concrete with the thickness of 10-20cm on the steel plate for protection.
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