CN114135135A - Leakage prevention method for large closed water pool in high-altitude desert environment - Google Patents
Leakage prevention method for large closed water pool in high-altitude desert environment Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 40
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- 238000010276 construction Methods 0.000 claims abstract description 48
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- 238000009736 wetting Methods 0.000 claims description 81
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- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 9
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- 239000007788 liquid Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000003020 moisturizing effect Effects 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/04—Forming boards or similar elements the form surface being of wood
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Abstract
The invention discloses a large-scale closed water pool anti-leakage method in a high-altitude desert environment, which comprises an anti-leakage construction method in the pouring construction process of the large-scale closed water pool, and specifically comprises the following steps: firstly, the quality of raw materials is controlled to control and adjust the self shrinkage of the concrete so as to reduce the generation of shrinkage cracks; secondly, reasonably designing the mix proportion of the concrete to reduce the shrinkage of the concrete and reduce the generation of shrinkage cracks; thirdly, controlling and reducing the generation of construction cold joints in the construction process; and finally, controlling the curing conditions of the concrete to reduce the temperature cracks and the drying shrinkage cracks of the concrete. The invention has good anti-leakage effect, and has the advantages of reducing cost, reducing maintenance risk, shortening construction period and the like.
Description
Technical Field
The invention relates to the field of automobile wading. More particularly, the invention relates to a method for preventing leakage of a large closed water pool in a high-altitude desert environment.
Background
Along with the development of the industry in China, the scale of the chemical industry is continuously expanded, and more large concrete pools are used for industrial design according to the requirements of chemical production. Common accident pools, sewage pools, adjusting pools, neutralizing pools, primary pools, fire pools, circulating pools and the like. These ponds are all important links in the production process, once leakage occurs, the structure durability is influenced by a light person, and the production or the pollution to the underground water environment is influenced by a heavy person.
In recent years, under the influence of various national policies, chemical industries in northwest areas of China with vast land resources and mineral resources, particularly in inner Mongolia, Gansu, Xinjiang and other areas, are developed vigorously, and the number of various chemical parks and chemical plants is increased day by day. However, the geographical environments of the industries are mostly high-altitude desert environments, and the environmental climate characteristics are that the altitude is high, sand blown by wind is large, the weather is dry and rainless all year round, the summer is hot and has large temperature difference between day and night, the winter is extremely cold and long in time, the concrete engineering construction is not facilitated, particularly the construction of a large-volume concrete pool, and the water leakage of the pool is easily caused by improper construction technical measures.
Disclosure of Invention
The invention aims to provide a method for preventing leakage of a large closed water pool in a high-altitude desert environment, which has the advantages of good leakage prevention effect, cost reduction, maintenance risk reduction, construction period shortening and the like.
In order to achieve these objects and other advantages according to the present invention, there is provided a method for preventing leakage of a large enclosed pool in a high-altitude desert environment, including a leakage prevention construction method in a large enclosed pool pouring construction process, specifically comprising: firstly, the quality of raw materials is controlled to control and adjust the self shrinkage of the concrete so as to reduce the generation of shrinkage cracks; secondly, reasonably designing the mix proportion of the concrete to reduce the shrinkage of the concrete and reduce the generation of shrinkage cracks; thirdly, controlling and reducing the generation of construction cold joints in the construction process; and finally, controlling the curing conditions of the concrete to reduce the temperature cracks and the drying shrinkage cracks of the concrete.
Preferably, the quality of the raw materials is controlled to be specifically as follows: the cement strength grade is not lower than 42.5, and the cement has no early strength performance; the sand content is not more than 3%, the coarse aggregate content is not more than 1%, and the concrete mixing ratio is as follows: 150 kg/m of water3Cement 260-280kg/m330-50kg/m of fly ash3500-sand 600kg/m3200-grade coarse aggregate and 250kg/m3300-450kg/m fine aggregate320-25kg/m of water reducing agent310-20kg/m of retarder38-10kg/m of expanding agent3The liquid inorganic nano anti-cracking permeability-reducing agent is 8-10kg/m3。
Preferably, the concrete mixing proportion is designed as follows: the water-cement ratio of the prepared concrete is not more than 0.40; the concrete formula also comprises a water reducing agent, an expanding agent and a liquid inorganic nano anti-cracking permeability reducing agent.
Preferably, the control of the construction cold joint is specifically as follows: the retarder is added into the formula of the concrete, and the combination quality of the upper concrete and the lower concrete is ensured by adopting the modes of immediately spraying and wetting the surface after concrete pouring and vibrating and extracting slurry for the second time before the subsequent concrete pouring.
Preferably, the concrete curing control specifically comprises: fully wetting a pool wall vertical face wood template and a pool top wood template of a large-scale closed pool before pouring concrete; after the pouring is finished, immediately covering the surface of the plane concrete by adopting a plastic film, and covering a layer of heat-insulating cotton felt after the concrete has certain strength; and keeping warm, moisturizing and maintaining for no less than 14 days by continuously sprinkling water.
Preferably, the method for fully wetting the wooden formwork on the vertical surface of the wall of the large-scale closed water tank and the wooden formwork on the top of the tank comprises the step of fully wetting through a wetting tank, wherein the wetting tank is of a square structure, the bottom surface of the wetting tank is an inclined plane, the bottom of the wetting tank is also provided with an outlet channel which is communicated with the outside and is communicated with the inclined lower part of the inclined bottom surface of the wetting tank, the two opposite side surfaces of the wetting tank are vertically provided with openings which are communicated with the outside at intervals, the height of the openings is just matched with the thickness of the wooden formwork, the openings on the two opposite sides of the wetting tank are just in one-to-one correspondence, the distance between the openings on the two opposite sides of the wetting tank in one-to-one correspondence is smaller than the length of the wooden formwork, the length of the wooden formwork is smaller than the distance between the outer wall surfaces on the two opposite sides of the wetting tank, and the inner wall surfaces on the two opposite sides of the wetting tank are provided with concave grooves above and below each opening, the internal fixation sets up the sponge piece, and the interval between the upper and lower sponge piece slightly is greater than the thickness of wood former, the equal interval in open-ended top and below of both sides inside wall that the wetting pond is relative is provided with a plurality of injector heads, and it passes through the outside jet pump of injection pipe intercommunication, and the injector head slope of the top is upwards to the wood former water spray, and all the other injector heads all slope upwards to the wood former water spray.
Preferably, the outlet channel is an inclined channel, the inclination angle of the outlet channel is larger than that of the bottom surface of the wetting pool, the outlet channel is communicated to the circulating water tank through a connecting pipe, a plurality of spraying heads on the same side of the wetting pool are all collected to the same spraying pipe through a spraying branch pipe, the spraying pipe is communicated with an external spraying pump and is located in the circulating water tank, and a valve is arranged on the spraying pipe.
Preferably, a plurality of concave holes are arranged on one side surface of the wood template in the thickness direction at intervals, the wetting tank is also correspondingly provided with an auxiliary frame matched with the wetting tank, which is used for taking out the wooden template in a matching way, the auxiliary frame comprises a movable frame, an auxiliary rod assembly and a base plate, the moving frame is provided with a walking wheel at the bottom for walking, one side surface of the moving frame is provided with an inward concave notch, the bottom surface of the recess is provided with a vertical slideway, the auxiliary rod component comprises an auxiliary plate and a plurality of auxiliary rods, the auxiliary plate is matched with the slide way of the notch to slide up and down, the auxiliary rods are arranged in a matrix of a plurality of rows and a plurality of columns, the plurality of rows of auxiliary rods are just corresponding to the plurality of openings of the wetting tank one by one, the plurality of columns of auxiliary rods are just corresponding to the plurality of concave holes of the wood template one by one, the upper surface and the lower surface of the auxiliary plate and the upper surface and the lower surface of the notch of the auxiliary frame are inserted and clamped through a plurality of backing plates.
Preferably, the specific method for wetting the wood formwork comprises the following steps: firstly, one side of a hand-held wood template, which is not provided with concave holes, is correspondingly inserted into the concave holes one by one, secondly, the auxiliary rod components are clamped according to the number of backing plates above and below an auxiliary frame which is adjusted according to the opening position, the auxiliary frame is pushed to move towards a wetting tank through a travelling wheel, the auxiliary rods are correspondingly inserted into the wetting tank from the openings, then the auxiliary frame is continuously moved until the auxiliary rods are correspondingly clamped into the concave holes of the wood template one by one, then, the wood template is continuously pushed manually until the wood template is just correspondingly positioned in the openings at two opposite sides, the auxiliary rod is taken out, the auxiliary frame is removed, a jet pump is opened again to spray water towards the wood template through a jet head, after the wood template is fully wetted, the jet pump is closed, finally, the auxiliary rods are correspondingly clamped into the concave holes of the wood template one by moving the auxiliary frame one by one, the auxiliary frame is moved again to push the wood template to be moved out from the wetting tank, and then the wooden template is moved out through manual cooperation for construction.
Preferably, the anti-seepage method is also included after the construction of the large-scale closed water pool, waterproof layers are arranged inside and outside the large-scale closed water pool after the construction is finished, and meanwhile, anti-seepage cloth is fixedly arranged on the outer side face of the large-scale closed water pool and has elasticity.
The invention at least comprises the following beneficial effects:
1. the method enables the water storage test of the large water tank to have zero leakage, and the popularization and application of the leakage-free construction technology of the same type of large closed water tank in the environment provide powerful technical support; economically, the risk of increasing maintenance cost caused by subsequent pool leakage is avoided, and the cost of the project is reduced in a long-term angle; the formation of reasonable construction technology is perfected, and the purposes of shortening the construction period of similar water pools, and not increasing the cost or saving the cost compared with the conventional areas are finally achieved.
2. The invention fully utilizes the sand and stone with the mud content exceeding the standard, fully utilizes the ground material, reduces the occupation of water resources, greatly reduces the material and transportation cost, and further ensures that the cost under the high-altitude desert environment is not increased or even reduced compared with the conventional area; and the maintenance cost can be reduced while the construction quality is ensured.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the structure of a wetting cell of the present invention;
fig. 2 is a schematic structural view of the auxiliary frame of the present invention.
Description of reference numerals:
1. wetting tank, 2, plank sheathing, 3, injector head, 4, exit channel, 5, sponge piece, 6, removal frame, 7, accessory plate, 8, auxiliary rod, 9, backing plate.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention provides a large-scale closed water pool anti-leakage method in a high-altitude desert environment, which comprises an anti-leakage construction method in the pouring construction process of the large-scale closed water pool, and specifically comprises the following steps: firstly, the quality of raw materials is controlled to control and adjust the self shrinkage of the concrete so as to reduce the generation of shrinkage cracks; secondly, reasonably designing the mix proportion of the concrete to reduce the shrinkage of the concrete and reduce the generation of shrinkage cracks; thirdly, controlling and reducing the generation of construction cold joints in the construction process; and finally, controlling the curing conditions of the concrete to reduce the temperature cracks and the drying shrinkage cracks of the concrete.
In the technical scheme, the temperature difference between day and night is large in a high-altitude desert environment, and the concrete is easy to generate temperature cracks; the weather is dry, the sand blown by the wind is large, and the concrete is easy to generate shrinkage cracks due to too fast water loss in the setting and hardening process; the sun is exposed, the surface evaporation is fast, and the concrete is easy to form a cold joint in the construction process; because of not having sufficient water source, local materials such as sand, stone can't the washing processing, and the mud content is higher can't reach the requirement, has increased the shrinkage factor of concrete, and then has increased the risk that produces the crack. The generation of cracks and construction cold joints is the biggest risk of pool leakage, so the control of the generation of various cracks and construction cold joints is the key for researching the leakage-free construction technology of the pool, and the generation of cracks in the construction process is controlled through the aspects.
The concrete mixing proportion of the application is specifically as follows: 150 kg/m of water3Cement 260-280kg/m330-50kg/m of fly ash3500-sand 600kg/m3200-grade coarse aggregate and 250kg/m3300-450kg/m fine aggregate320-25kg/m of water reducing agent310-20kg/m of retarder38-10kg/m of expanding agent3The liquid inorganic nano anti-cracking permeability-reducing agent is 8-10kg/m3。
The water-cement ratio after the concrete is prepared is not more than 0.40.
Specifically, the leakage prevention control is performed from the following aspects:
1. quality control of raw materials
For basic control of raw materials, in order to reduce and slow down the release of cement hydration heat, the strength grade of selected cement is not lower than 42.5, and the selected cement does not have early strength performance; the sand mud content must not exceed 3%, the coarse aggregate mud content must not exceed 1%, nevertheless receive the region restriction, to the requirement of mud content condition, probably can't satisfy under the high height and high altitude desert water shortage environment, the allopatric purchase transportation will greatly increased the cost again, so can consider the material of using on the spot, the increase of mud content can make the drying shrinkage of concrete increase, through adjusting the aggregate gradation, doping modes such as expanding agent, adjust the shrink of concrete self.
2. Concrete mix proportion design
The construction mix proportion of the concrete in the pool is determined through tests, and the required compressive impermeability strength is achieved. In order to reduce hardening shrinkage, the water-cement ratio of the concrete is controlled to be not more than 0.40; in order to ensure the workability of concrete, a proper water reducing agent is added according to the requirements of concrete admixture application technical specifications and the like; in order to reduce the shrinkage of the increase of the mud content of the aggregate as much as possible, determining reasonable aggregate gradation; in order to compensate the shrinkage of the concrete, a proper amount of expanding agent is added according to the technical specification for compensating the shrinkage of the concrete; in order to increase the crack resistance of the concrete, the concrete is considered to be doped with a liquid inorganic nano anti-cracking permeability reducing agent so as to further reduce the shrinkage of the concrete.
3. Control of construction cold joint
Considering that the pouring of each section of concrete needs to be sequentially layered and continuously poured, and two situations exist in the cold joint in the construction process; one is that the construction duration is long, the poured concrete reaches initial setting, and the later-order concrete is not yet followed by pouring, which will result in the occurrence of construction cold joints on the contact surface. Therefore, the initial setting time of the concrete is adjusted according to the construction duration by adding the delayed coagulation type concrete additive, and further the construction cold joint caused by too short initial setting time of the concrete is avoided; the other is that the surface of the poured concrete is quickly dehydrated to form a surface thin shell due to dry weather, sun exposure and sand wind weather, so that the combination with the subsequent concrete is influenced, and a cold joint is formed. For the situation, the modes of immediately spraying and wetting the surface after concrete pouring and vibrating and twice vibrating and lifting slurry before subsequent concrete pouring are respectively adopted, so that the combination quality of the upper concrete and the lower concrete is ensured.
4. Concrete curing
The curing of concrete is mainly controlled from two aspects of controlling the temperature difference and moisture retention of the concrete. In order to avoid the phenomenon that the temperature difference between the inside and the outside exceeds the standard due to the fact that the surface concrete is cooled too fast and the inside is continuously hydrated and released heat, the concrete is cracked, and after the concrete pouring of the water tank is finished, heat preservation covering measures are taken in time. After concrete pouring is completed, the surface loses water too quickly, and surface cracks are easily generated. In the hydration reaction process of the concrete, the water shortage can cause the strength of the concrete to rise slowly, and cracks are easily formed due to the insufficient early tensile strength. Therefore, the wood formworks 2 on the vertical surfaces of the tank walls and the wood formworks 2 on the top of the tank are fully wetted before concrete is poured; after the pouring is finished, immediately covering the surface of the plane concrete by adopting a plastic film, and covering a layer of cotton felt after the concrete has certain strength; and keeping warm, moisturizing and maintaining for no less than 14 days by continuously sprinkling water.
In another technical scheme, as shown in fig. 1, a method for fully wetting a wooden formwork 2 on a facade of a wall of a large-scale closed water tank and a wooden formwork 2 on a top of the large-scale closed water tank is to fully wet the wooden formwork through a wetting tank 1, wherein the wetting tank 1 is of a square structure, the bottom surface of the wetting tank 1 is an inclined plane, the bottom of the wetting tank 1 is further provided with an outlet channel 4 which is communicated with the outside and is communicated with the inclined lower part of the inclined bottom surface of the wetting tank 1, two opposite side surfaces of the wetting tank 1 are respectively provided with openings which are communicated with the outside at intervals, the height of the openings is just matched with the thickness of the wooden formwork 2, the openings on the two opposite sides of the wetting tank 1 are just in one-to-one correspondence, the distance between the openings on the two opposite sides of the wetting tank 1 which are in one-to-one correspondence is smaller than the length of the wooden formwork 2, the length of the wooden formwork 2 is smaller than the distance between the outer wall surfaces on the two opposite sides of the wetting tank 1, the utility model discloses a wood formwork wetting system, including wetting pond 1 relative both sides internal face all is provided with the recess of indent in the top and the below of every opening part, and its internal fixation sets up sponge piece 5, and the interval between upper and lower sponge piece 5 slightly is greater than the thickness of plank sheathing 2, the equal interval in open-ended top and below of the both sides inside wall that wetting pond 1 is relative is provided with a plurality of injector heads 3, and it is through the outside jet pump of injection pipe intercommunication, and the 3 slopes of injector head 3 the below of top are towards plank sheathing 2 water sprays, and all the other injector heads 3 all slopes upwards towards plank sheathing 2 water sprays.
In the technical scheme, the pool wall elevation wood formwork 2 and the pool top wood formwork 2 are both a plurality of basic wood formworks 2 and are spliced to form a whole formwork structure, the heights of the basic wood formworks are the same, the height of each wood formwork 2 is equal to the length in the left-right direction in the figure 1, the pool top wood formwork 2 is not suitable for the wetting pool 1, and the wetting pools 1 with corresponding sizes can be respectively arranged on the pool wall elevation wood formwork 2 and the pool top wood formwork 2 according to needs to be fully wetted. The wood formwork 2 is sprayed by the spraying head 3, so that sufficient wetting is realized, and redundant water seeps out of the wood formwork 2 to the lower part or flows down through the wood formwork 2 at two sides in the inner and outer directions in the figure 1 and then flows out of the outlet channel 4 from the inclined bottom surface of the wetting pool 1. The sponge block 5 can fully absorb water and then permeate into the wood formwork 2 to fully wet the two ends of the wood formwork 2, and in addition, when the wood formwork 2 is moved out to the wetting tank 1, the sponge block 5 can cut off and rub excessive water on the wood formwork 2 to avoid water waste caused by the movement of the wood formwork 2 with water.
In another technical scheme, outlet channel 4 is the passageway of slope, and its inclination is greater than the inclination of 1 bottom surface in wetting pond, outlet channel 4 communicates to circulation tank through the connecting pipe, wetting pond 1 all collects same root injection pipe through spraying branch pipe with a plurality of injector heads 3 of one side, the injection pipe communicates outside jet pump again, and it is located in the circulation tank, be provided with the valve on the injection pipe.
In the above technical scheme, the inclination angle of the outlet channel 4 is larger than the inclination angle of the bottom surface of the wetting pool 1, so that the smooth outflow of redundant water can be kept, the water can be recycled through the circulating water tank, and the valve is used for controlling the opening and closing of the spray head 3.
In another technical scheme, as shown in fig. 2, one side of the wooden template 2 in the thickness direction is provided with a plurality of concave holes at intervals, the wetting tank 1 is further correspondingly provided with an auxiliary frame matched with the wetting tank 1 and used for taking out the wooden template 2 in a matching manner, the auxiliary frame comprises a moving frame 6, an auxiliary rod assembly and a backing plate 9, the moving frame 6 travels by a travelling wheel arranged at the bottom, one side of the moving frame 6 is provided with an inwards concave notch, a vertical slideway is arranged on the concave bottom surface of the moving frame, the auxiliary rod assembly comprises an auxiliary plate 7 and a plurality of auxiliary rods 8, the auxiliary plate 7 slides up and down in the slideway of the notch, the plurality of auxiliary rods 8 are arranged in a multi-row and multi-column matrix manner, the multi-row auxiliary rods 8 just correspond to the plurality of openings of the wetting tank 1 one to one, the multi-column auxiliary rods 8 just correspond to the plurality of concave holes of the wooden template 2 one to one, the upper surface and the lower surface of the auxiliary plate 7 and the upper surface and the lower surface of the gap of the auxiliary frame are inserted and clamped through a plurality of backing plates 9.
In the technical scheme, the auxiliary frame is of a movable structure, so that the auxiliary wood formwork 2 can be conveniently matched to move out of the wetting tank 1, the depth of the concave hole is determined according to the size of the actual wood formwork 2 and the bearing force required, and the auxiliary rod 8 can be ensured to be inserted to completely support the movement out of the wood formwork 2. The position of the auxiliary plate 7 is adjusted by adjusting the position of the auxiliary rod 8 according to the position of the opening, and the position of the auxiliary plate 7 is clamped by vertically inserting a plurality of thin backing plates 9, so that the position of the auxiliary rod 8 is adjusted and fixed on the movable frame 6.
In another technical scheme, the specific method for wetting the wood formwork 2 comprises the following steps: firstly, one side of a wood template 2 which is not provided with concave holes is held and inserted into the concave holes in a one-to-one correspondence manner, secondly, the number of blocks of a cushion plate 9 above and below an auxiliary frame is adjusted according to the opening position to clamp the auxiliary rod components, the auxiliary frame is pushed to move towards a wetting tank 1 through a walking wheel, the auxiliary rods 8 are correspondingly inserted into the wetting tank 1 from the openings, then the auxiliary frame is continuously moved until the auxiliary rods 8 are correspondingly clamped into the concave holes of the wood template 2 one by one, then the wood template 2 is continuously pushed manually, the auxiliary frame is moved in a matching manner until the wood template 2 is just correspondingly positioned in the openings at two opposite sides, the auxiliary rods 8 are taken out, the auxiliary frame is removed, the jet pump is opened again to jet water towards the wood template 2 through the jet head 3, after the wood template is fully wetted, the jet pump is closed, finally, the auxiliary rods 8 are correspondingly clamped into the concave holes of the wood template 2 one by moving the auxiliary frame, the auxiliary frame is moved again to push the wood template 2 to be moved out from the wetting tank 1, and then the wooden template 2 is moved out through manual cooperation for construction.
In another technical scheme, the method also comprises an anti-seepage method after the construction of the large-scale closed water pool, waterproof layers are arranged inside and outside the large-scale closed water pool after the construction is finished, and anti-seepage cloth is fixedly arranged on the outer side surface of the large-scale closed water pool and has elasticity.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The method for preventing the large-scale closed water pool from leaking in the high-altitude desert environment is characterized by comprising a leakage prevention construction method in the pouring construction process of the large-scale closed water pool, and specifically comprises the following steps: firstly, the quality of raw materials is controlled to control and adjust the self shrinkage of the concrete so as to reduce the generation of shrinkage cracks; secondly, reasonably designing the mix proportion of the concrete to reduce the shrinkage of the concrete and reduce the generation of shrinkage cracks; thirdly, controlling and reducing the generation of construction cold joints in the construction process; and finally, controlling the curing conditions of the concrete to reduce the temperature cracks and the drying shrinkage cracks of the concrete.
2. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 1, wherein the quality of the raw materials is controlled to be specifically as follows: the cement strength grade is not lower than 42.5, and the cement has no early strength performance; the sand content is not more than 3%, the coarse aggregate content is not more than 1%, and the concrete mixing ratio is as follows: 150 kg/m of water3Cement 260-280kg/m330-50kg/m of fly ash3500-sand 600kg/m3200-grade coarse aggregate and 250kg/m3300-450kg/m fine aggregate320-25kg/m of water reducing agent310-20kg/m of retarder38-10kg/m of expanding agent3The liquid inorganic nano anti-cracking permeability-reducing agent is 8-10kg/m3。
3. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 1, wherein the concrete mix proportion is designed as follows: the water-cement ratio of the prepared concrete is not more than 0.40; the concrete formula also comprises a water reducing agent, an expanding agent and a liquid inorganic nano anti-cracking permeability reducing agent.
4. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 1, wherein the control of the construction cold joint specifically comprises: the retarder is added into the formula of the concrete, and the combination quality of the upper concrete and the lower concrete is ensured by adopting the modes of immediately spraying and wetting the surface after concrete pouring and vibrating and extracting slurry for the second time before the subsequent concrete pouring.
5. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 1, wherein the concrete curing control is specifically as follows: fully wetting a pool wall vertical face wood template and a pool top wood template of a large-scale closed pool before pouring concrete; after the pouring is finished, immediately covering the surface of the plane concrete by adopting a plastic film, and covering a layer of heat-insulating cotton felt after the concrete has certain strength; and keeping warm, moisturizing and maintaining for no less than 14 days by continuously sprinkling water.
6. The method for preventing seepage of a large-scale closed water pool in a high-altitude desert environment as claimed in claim 5, wherein the method for fully wetting the wall elevation wooden forms and the top wooden forms of the large-scale closed water pool comprises fully wetting by a wetting pool, the wetting pool is of a square structure, the bottom surface of the wetting pool is an inclined plane, the bottom of the wetting pool is further provided with an outlet channel communicated to the outside and communicated to the inclined lower part of the inclined bottom surface of the wetting pool, the two opposite side surfaces of the wetting pool are vertically provided with openings communicated to the outside at intervals, the height of the openings is exactly matched with the thickness of the wooden forms, the openings on the two opposite sides of the wetting pool are exactly in one-to-one correspondence, the distance between the openings on the two opposite sides of the wetting pool in one-to-one correspondence is smaller than the length of the wooden forms, the length of the wooden forms is smaller than the distance between the outer wall surfaces on the two opposite sides of the wetting pool, the utility model discloses a wood formwork spraying device, including wetting pond relative both sides internal wall, the top of every opening part and below all are provided with the recess of indent in the wetting pond, and the internal fixation sets up the sponge piece, and the interval between upper and lower sponge piece slightly is greater than the thickness of wood formwork, the equal interval in both sides inside wall relative in wetting pond is provided with a plurality of injector heads in open-ended top and below, and it passes through the outside jet pump of injection pipe intercommunication, and the injector head slope of top is towards the wood formwork water spray downwards, and all the other injector heads all slope upwards towards the wood formwork water spray.
7. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 6, wherein the outlet channel is an inclined channel with an inclination angle larger than that of the bottom surface of the wetting pool, the outlet channel is connected to the circulation water tank through a connecting pipe, the plurality of spraying heads on the same side of the wetting pool are converged to the same spraying pipe through a spraying branch pipe, the spraying pipe is further connected to an external spraying pump located in the circulation water tank, and a valve is arranged on the spraying pipe.
8. The method for preventing seepage of a large closed water pool in a high-altitude desert environment as claimed in claim 6, wherein a plurality of concave holes are formed at intervals on one side surface of the wood formwork in the thickness direction, the wetting pool is correspondingly provided with an auxiliary frame matched with the wetting pool and used for taking out the wood formwork in a matched manner, the auxiliary frame comprises a moving frame, an auxiliary rod assembly and a backing plate, the moving frame is provided with a walking wheel at the bottom for walking, one side surface of the moving frame is provided with an inwards concave notch, a vertical slideway is arranged on the concave bottom surface of the moving frame, the auxiliary rod assembly comprises an auxiliary plate and a plurality of auxiliary rods, the auxiliary plate is matched with the slideway of the notch to slide up and down, the plurality of auxiliary rods are arranged in a multi-row and multi-column matrix manner, the multi-row auxiliary rods exactly correspond to the plurality of openings of the wetting pool one to one, the multi-column auxiliary rods exactly correspond to the plurality of concave holes of the wood formwork one to one, the upper surface and the lower surface of the auxiliary plate and the upper surface and the lower surface of the notch of the auxiliary frame are inserted and clamped through a plurality of backing plates.
9. The method for preventing leakage of a large closed water pool in a high-altitude desert environment as claimed in claim 8, wherein the specific method for wetting the wood formwork is as follows: firstly, one side of a hand-held wood template, which is not provided with concave holes, is correspondingly inserted into the concave holes one by one, secondly, the auxiliary rod components are clamped according to the number of backing plates above and below an auxiliary frame which is adjusted according to the opening position, the auxiliary frame is pushed to move towards a wetting tank through a travelling wheel, the auxiliary rods are correspondingly inserted into the wetting tank from the openings, then the auxiliary frame is continuously moved until the auxiliary rods are correspondingly clamped into the concave holes of the wood template one by one, then, the wood template is continuously pushed manually until the wood template is just correspondingly positioned in the openings at two opposite sides, the auxiliary rod is taken out, the auxiliary frame is removed, a jet pump is opened again to spray water towards the wood template through a jet head, after the wood template is fully wetted, the jet pump is closed, finally, the auxiliary rods are correspondingly clamped into the concave holes of the wood template one by moving the auxiliary frame one by one, the auxiliary frame is moved again to push the wood template to be moved out from the wetting tank, and then the wooden template is moved out through manual cooperation for construction.
10. The method of claim 1, further comprising a step of preventing leakage after the construction of the large closed pond, wherein waterproof layers are disposed inside and outside the large closed pond after the construction, and the waterproof cloth is fixed on the outer side of the large closed pond and has elasticity.
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