CN207327274U - A kind of water channel engineering system - Google Patents

A kind of water channel engineering system Download PDF

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Publication number
CN207327274U
CN207327274U CN201721055019.1U CN201721055019U CN207327274U CN 207327274 U CN207327274 U CN 207327274U CN 201721055019 U CN201721055019 U CN 201721055019U CN 207327274 U CN207327274 U CN 207327274U
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water channel
prefabricated component
engineering system
water
component
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潘春光
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Abstract

The utility model discloses a kind of water channel engineering system, the water channel engineering system includes water channel gool prefabricated component, water channel threeway prefabricated component, water channel corner prefabricated component, water channel side lead to prefabricated component, water channel is passed by one's way prefabricated component and water channel cover board prefabricated component;The water channel gool prefabricated component, water channel threeway prefabricated component, water channel corner prefabricated component, water channel side lead to prefabricated component and water channel is passed by one's way, and prefabricated component is attached according to canal system demand, forms water channel engineering system;Water channel prefabricated component of passing by one's way is coordinated with water channel cover board prefabricated component;Each prefabricated component place of abutting each other is equipped with docking groove.The utility model can implement water channel engineering system factorial praluction, and construction site Fast Installation, is greatly improved construction efficiency, the features such as shortening the construction period, reduce engineering cost.

Description

A kind of water channel engineering system
Technical field
It the utility model is related to a kind of hydraulic engineering field, and in particular to a kind of small-sized water channel engineering system.
Background technology
Water channel is the main tool of the filling such as irrigation and water conservancy, traffic, municipal administration, sewage, rainy day draining row's engineering, and concrete The U-shaped gool mould of soil is one of main tool for producing gool.
With greatly developing for China's modern agriculture and water resource infrastructure, agricultural and water conservancy basis are built in country and place If scale of investment it is increasing.China is one to the relatively backward country of agricultural technology, vast in territory, water resource assignment ten Divide inequality, it is particularly very in short supply to west area, the water resource of drug in some provinces.At the same time, due to filling row's mode and material It is unreasonable, great lot of water resources is not utilized and protected well, is had become in China's agriculture project and water conservancy construction The poorly efficient serious problems utilized of water resource.Over more than 20 years, precast concrete gool(Referred to as U-shaped gool)It is special in China each province and city It is not to be promoted and applied in western water resources regional agricultural water conservancy project in short supply, it is agriculture abundant with hydraulic department has obtained various regions Certainly, significant economic benefit and social benefit are achieved.
Also there is many through retrieving the Chinese patent literature in relation to water channel prefabricated component, it is as follows:
1st, Chinese patent<Application number> 200620034095.X<Utility model title>Concrete prefabricated groove<Applicant> Fan Yuncong<Address>Jie Bei sections of development zone Pingshan, Deyang City the Yellow River, Sichuan Province(In the bureau of agriculture of Jingyang District)<Summary>The utility model It is related to a kind of concrete prefabricated groove for farmland water channel, the groove is by prefabricated components that a pair of of shape of cross section is " L " shape Opposite arrangement combinations form a "u"-shaped groove, and the different bottom of width can be added between the mating surface of the component of two " L " shapes Plate, forms the different groove water channel of various circulatioies, has positioning spigot in the mating surface of each component.
2nd, Chinese patent<Application number> 201520717706.X<Utility model title>A kind of new prefabricated water channel<Application People>Deng Zenghua<Address>Ganzhou City of Jiangxi Province Shicheng County agricultural development office<Summary>A kind of new prefabricated water channel, is related to one Kind rural water conservancy transformation facility, especially a kind of new prefabricated water channel, including U-lag, the upper edge of U-lag are equipped with road deck;Its It is characterized in:Often save U-lag end and be equipped with water stopping trough, two save U-lag junction bar connectings, then in the water stopping trough at U-lag end With novel water-stop rubber filling, sealing effect is played.
3rd, Chinese patent<Application number> 201020113216.6<Utility model title>Anti-deformation combined penstock<Application People>Tian Shucheng<Address>7 buildings west gates of house west wing Unit 1 in Samples, Huadian, Jilin Province city three<Summary>It the utility model is related to water conservancy work Journey technical field, be it is a kind of be widely used in that agricultural irrigation, traffic municipal administration be defeated, Anti-deformation combined penstock of drainage system, it is special Putting is:It includes some blocks of canal plates, and the joint of adjacent canal plate is tightly connected by sealing connecting strip and fluid sealant, canal plate with Convex edge is equipped with below the canal plate of canal plate joint, the joint of vertical or horizontal canal plate is in contact by the convex edge of its joint Flat recess consolidate block and the connecting screw that is placed in sealing connecting strip is connected;The joint of vertical and horizontal canal plate is right by its The connecting screw that the cross recess that the convex edge at the place of connecing is in contact consolidates block and is placed in sealing connecting strip is connected.
4th, Chinese patent<Application number> 201520000756.6<Utility model title>A kind of prefabricated drainage ditch pours into Pattern has<Applicant>Jiangxi technical college<Address>Nanchang City, Jiangxi Province Qingshanhu District precious jade lake garden in university<Summary>It is practical new Type discloses a kind of casting mold of prefabricated drainage ditch, including trolley, external mold and internal model, and external mold is in concave, and internal model is in U Type, drainage ditch are taken shape in the cavity between external mold and internal model.
The shortcomings of the prior art has:1st, the process of construction cycle it is long, it is of high cost, need manually more, the construction period Between easily influenced, it is necessary to excavate larger construction place, to be more easily damaged, not easy care, it is impossible to reuse, tear open by weather Except fairly cumbersome, original Land Environment of destructible etc.;2nd, water channel gool is easily by earth pressure crimp or damage, both pole The big service life for influencing beam groove, and a larger increase cost input, waste of resource;3rd, during water channel gool installation docking, work of constructing Skill is more, and scene is not easy to operate, meanwhile, joint poor sealing, easy leak;4th, water channel channel and construction method process step are made Rapid more, when modulus, is too cumbersome, greatly wastes labour and working time, work efficiency is low.
The content of the invention
The purpose of this utility model is the defects of being directed to the prior art, there is provided one kind can meet mechanized construction, can be greatly Construction efficiency is improved, the larger shortening engineering construction duration, firm in structure, anti-extrusion deformation is strong, convenient for disassembly and assembly, can repeat profit With Butt sealing is good, and appearance is neat, and streamline is beautiful, and installation is quick, removes convenient water channel engineering system.
In order to realize above-mentioned the utility model aim, the technical solution used for:
A kind of water channel engineering system, the water channel engineering system include water channel gool prefabricated component, water channel threeway prefabricated component, Water channel corner prefabricated component, water channel side lead to prefabricated component and water channel is passed by one's way prefabricated component;The water channel pass by one's way prefabricated component prepare water is installed Drain cover plate prefabricated component;Docking groove is equipped with each prefabricated component end face;The water channel gool prefabricated component, water channel threeway is prefabricated Part, water channel corner prefabricated component, water channel side lead to prefabricated component and water channel is passed by one's way, and prefabricated component is corresponded to according to water channel system design considerations Connection, connects and composes water channel engineering system.
Above-described prefabricated component is formed for framework of steel reinforcement and concrete, and the framework of steel reinforcement is wrapped up by concrete.
Above-described prefabricated component is molded by being made after the casting concrete in mould, and water is crossed in obtained prefabricated component groove Section configuration is inverted trapezoidal structure, produces prefabricated component with mould, can realize industrial mass production, production efficiency is higher, materials Save, production cost is low, produces larger economic benefit;It need not be made to engineering site, dig irrigation canals and ditches, prefabricated component is transported Extremely, it can just be installed, greatly improve project progress, whole water channel good airproof performance.
The processing step of above-described preform production is:
(1)Making and the mould needed for water channel prefabricated component same shape, mould is inverted and is put, from bottom casting concrete;
(2)On die inside on even application mould oil or pad on plastic film;
(3)The framework of steel reinforcement made is inserted in and is poured in mould, and adjusts the protective layer of concrete, the reinforcing bar Skeleton configures principal rod according to the stressing conditions of trough rim, slot bottom, and trough rim is similarly configured by inside and outside stress, and slot bottom presses upper and lower stress Configuration, the framework of steel reinforcement include first module component distributing bar, second unit component distributing bar, distributing bar and bottom Reinforcing rib, first module component distributing bar, second unit component distributing bar and bottom reinforcement weld to form unit member, Several unit members are welded to the framework of steel reinforcement to form gool by distributing bar, the unit structure of both ends distribution on framework of steel reinforcement Part is closeer, and the unit member of intermediate distribution is sparse and uniform;
(4)Component pours required concrete, is poured into from mold bottom, is uniformly divided to both ends, then, is shaken with direct insertion Device vibration is smash, time of vibration 1~3 minute, after concrete discharges bubble, troweling is carried out to concrete surface in die slot;Lid Upper cover plate;
(5)Water channel prefabricated component after casting concrete conserves at the scene, and temperature is removable after being more than 500h DEG C during maintenance Bian Mo, removable internal model after temperature reaches 1500h DEG C during watering maintenance, tears prefabricated component after internal model open and concentrates stacking, Wen Da during maintenance Can dispatch from the factory use at more than 2000h DEG C.
Temperature is time × temperature when above-described, and the chronomere is hour, the temperature unit for degree Celsius, The time and temperature are positive integer.
Its groove madial wall of above-described prefabricated component and bottom angle are 95 °~98 °, are connected using chamfered transition, chamfering Angle is 45 ° or 60 °.
Hole for hoist is equipped with above-described prefabricated component, hole for hoist provides many just for prefabricated component in Fast Installation Profit, can quick aligning installation site lifting and ensure prefabricated component lifting when in level;Ensure that lifting is pre- during according to lifting Product stress balance, sets position to be set as follows hole for hoist:Take docking that hole for hoist is set for strip prefabricated component; To corner prefabricated component, on the corner two sides is correspondingly arranged hole for hoist;Hole for hoist is set in branch to threeway prefabricated component, corresponding to this Hole for hoist is set on main road on hole for hoist is diagonal.
Docking groove described above plays installation certain positioning action, and can be so that being deposited between the prefabricated component docked two-by-two In certain gap, certain variable spacing is provided when expanding with heat and contract with cold to prefabricated component, can protect prefabricated component service life and Can ensure docking groove fill up after leakproofness, be not on docking groove cement mortar by drawing crack phenomenon, ensure water supply, avoid Unnecessary water resource waste.
Place is equipped with the side through hole of square small displacement between above-described water channel side leads to prefabricated component in the sidewall, and side through hole is in Interior narrow outer width shape.
Above-described concrete includes cement, coarse sand and limestone or granite, and the particle diameter of limestone or granite is 5 ~30mm, coarse sand particle diameter are 1~5mm, and cement, coarse sand and limestone or granite prepare the concrete using C20 labels, grading For 2 grades.
The construction method that the system is taken comprises the following steps:
(1)Clear base unwrapping wire:The width that the maximum width taken more than prefabricated component is 20-30cm is as clear baseline, using lime Powder identification scribe;
(2)Excavated using excavator or manually in the region of pulverized limestone identification scribe, the rational stacking earthwork, and manually Levelling bottom, determines sideline and the Bottom Altitude of installation.
(3)The prefabricated component of construction site will be transported to, be lifted with excavator, the prefabricated component sling is put into foundation trench, it is right Quasi- sideline and Bottom Altitude is leveled up, then, remove suspension hook;
(4)After installation, the site error for having installed prefabricated component is corrected, reaches design requirement, and reinforcing prevents from deforming;
(5)With the docking groove of cement fine sand slurry filling prefabricated component joint, the weight ratio of cement and fine sand is 1:4-5, sand Slurry with hold it is agglomerating preferably;
(6)After mortar joint condenses, the gap on backfill prefabricated component both sides, compacting, remaining earth material etc. is transported out of.
The substantive distinguishing features and progress that the utility model has relative to the prior art:
1st, the utility model can make small-sized water channel meet that batch production is produced in enormous quantities, carry out mechanization at the construction field (site) Construction, the larger shortening engineering construction duration, ensures construction quality.Its is firm in structure, and anti-extrusion deformation is strong, convenient for disassembly and assembly, can Recycling, Butt sealing is good, and appearance is neat, and streamline is beautiful, and installation is quick, and it is convenient to remove.
2nd, construction efficiency can be greatly improved in the utility model, improve more than 7 times than common construction method, construction period contracting Short is 80~90%.
3rd, materials needed for the utility model production are few, can save cast-in-place concrete investment 12~35%, larger to reduce cost Input, can produce great economic interests.
4th, the mould of the utility model production and application, the production is simple and convenient for it, and assembling is quick, and process simplifies, modulus, the demoulding Fast and easy;And the bar construction being equipped with component so that the structure of gool prefabricated component is firmer, resistance to compression and tensile capacity Enhancing;The principal rod and construction muscle that bar construction frame is set make whole gool, and structure is reasonable, can resist external force to component Destroy.
5th, the concrete coarse aggregate that the utility model uses is limestone or granite, and particle diameter is 5~30mm, coarse sand 1 ~5mm, using the concrete of C20 labels, grading is 2 grades, to the of less demanding of raw material, is adapted to wide geographic area to use.
6th, the precast concrete of the utility model production is equipped with U-shaped docking groove in joint, and U-shaped docking is formed after connection Seam, fills up concrete in seam(Or impervious viscous and material), the loss of water flow can be greatly reduced, substantially increases water conservancy use Rate;Meanwhile this U-shaped abutment joint is installs the water channel of prefabricated component because cold and hot deform provides the variable space, protection is prefabricated Part is without damage.
7th, reinforcement constitution described in the utility model includes second layer distributing bar, first layer distributing bar, reinforcement construction steel Muscle and longitudinal reinforcement, the second layer distributing bar, first layer distributing bar and reinforcement distributing bar connect and compose unit member, Second layer distributing bar is sandwiched in centre by first layer distributing bar and reinforcement distributing bar, several unit members pass through longitudinal steel Muscle connects into reinforcement constitution.This reinforcement constitution design is special, can ensure that water channel prefabricated component is sturdy and durable, compared with existing water More than several times of canal prefabricated component Quality advance, can be through under pressure indeformable.
Brief description of the drawings
Fig. 1 is the overlooking the structure diagram of a kind of water channel engineering system of the utility model and construction method.
Fig. 2 is the left view structural representation of a kind of water channel engineering system of the utility model and construction method.
Fig. 3 is the structure diagram of water channel gool prefabricated component.
Fig. 4 is the structure diagram of water channel corner prefabricated component.
Fig. 5 is the structure diagram of water channel threeway prefabricated component.
Fig. 6 is that water channel is passed by one's way the structure diagram of prefabricated component.
Fig. 7 is the structure diagram that water channel side leads to prefabricated component.
Fig. 8 is the structure diagram of water channel cover board prefabricated component.
Fig. 9 is the reinforcement constitution structure diagram that water channel gool prefabricated component, water channel side lead to prefabricated component, prefabricated component of passing by one's way.
Figure 10 is the reinforcement constitution structure diagram of water channel threeway prefabricated component.
Figure 11 is the reinforcement constitution structure diagram of water channel corner prefabricated component.
Element title and serial number in figure:Water channel gool prefabricated component 1, water channel threeway prefabricated component 2, U-shaped docking groove 3, water channel Corner prefabricated component 4, water channel side lead to prefabricated component 5, cover board prefabricated component 6, and water channel is passed by one's way prefabricated component 7, side through hole 8, first module component Distributing bar 9, second unit component distributing bar 10, distributing bar 11, bottom reinforcement 12, hole for hoist 13, cover board row of hanging hole 14, supplementary angle 15.
Embodiment
The utility model is further described with reference to the embodiment of the utility model.
As shown in Fig. 1 to 11, a kind of water channel engineering system and construction method, the water channel engineering system include water channel canal It is pre- that groove prefabricated component 1, water channel threeway prefabricated component 2, docking groove 3, water channel corner prefabricated component 4, water channel side lead to prefabricated component 5, water channel is passed by one's way Product 7 and water channel cover board prefabricated component 6;The water channel gool prefabricated component 1, threeway prefabricated component 2, water channel corner prefabricated component 4, water channel Side leads to prefabricated component 5, water channel is passed by one's way prefabricated component 7 and water channel cover board prefabricated component 6 are attached according to canal system demand, form water channel engineering System;Water channel prefabricated component 7 of passing by one's way must carry out cooperatively forming small culvert of passing by one's way with water channel cover board prefabricated component 6;The water Canal prefabricated component 7 of passing by one's way is equipped with supporting table, supporting table support water channel cover board prefabricated component 6,6 top surface of water channel cover board prefabricated component and water channel mistake Road prefabricated component 7 flushes, to provide condition across road;And it is equipped with docking groove 3 in each prefabricated component joint.
The end face that the docking groove 3 is arranged on water channel prefabricated component takes the shape of the letter U, and is known as U-shaped docking groove;When two water channel prefabricated components When port is docked, starched in U-shaped docking groove with cement fine sand and filled up docking groove 3, the outflow for reducing water reduces water Loss, makes full use of water resource, while also strengthen the globality of water channel engineering system.
The prefabricated component is poured by mould and formed with concrete parcel reinforcement frame, preform shape for it is upper it is bigger under Smaller inverted trapezoidal structure.
It is described pour Mold Making production processing step be:
(1)Making and the mould needed for water channel prefabricated component same shape, mould is inverted and is put, from bottom casting concrete;
(2)Uniformly sprayed on die inside(Apply)Upper mould oil(Agent)Or the upper plastic film of pad;
(3)The framework of steel reinforcement made is inserted in and is poured in mould, and adjusts the protective layer of concrete, the reinforcing bar Framework configures principal rod according to the stressing conditions of trough rim, slot bottom, and trough rim is similarly configured by inside and outside stress, and slot bottom presses upper and lower stress Configuration, its main feature is that:The reinforcing bar of configuration is resolved into the shape that can be processed, it is single to be then welded into a unit member i.e. first Each unit component, is formed skeleton, that is, distributing bar 11 of gool by first component distributing bar 9 with reinforcement welding, each unit on skeleton Component distribution is that 2, both ends unit member 9 is closeer, and temporary location component, that is, second unit component distributing bar 10 is sparse and equal It is even, increase reinforcing rib 12 in the bottom of each unit structure.Thus formed unit distributing bar two port distributions of component compared with It is close, it is middle relatively to dredge, the intensity of overall water channel prefabricated component is enhanced, can also improve the anti-extrusion ability of water channel prefabricated component, can be improved The flexural capacity of hole for hoist;
(4)Casement pipe is put into the preformed hole of die side plate, hole for hoist 13 is made, then pours required coagulation Soil, concrete are poured into from die top, are uniformly divided to both ends, then, are vibrated with direct insertion vibrator, 1~3 point of time of vibration Clock, after concrete discharges bubble, troweling is carried out to die slot upper surface;Casement pipe is lifted to remove in concrete initial set;
(5)Water channel prefabricated component after casting concrete conserves at the scene, and temperature is up to 500 removable sides after h DEG C during maintenance Mould, temperature is torn prefabricated component after internal model open and is concentrated and stack up to 1500 removable internal models after h DEG C during watering maintenance, the Wen Da when maintenance Can dispatch from the factory use at 2000 more than h DEG C.
The water channel gool prefabricated component 1, water channel threeway prefabricated component 2, docking groove 3, water channel corner prefabricated component 4, water channel side lead to Prefabricated component 5, water channel pass by one's way prefabricated component 7 and water channel cover board prefabricated component 6 is equipped with reinforcement constitution.
Place is equipped with the side through hole 8 of square small displacement between the water channel side leads to prefabricated component 5 in the sidewall, and side through hole 8 is in Interior narrow outer width shape, outside dimension are more than 2 cm of inside dimension.The upper end line connection at the position lower ending opening of the side through hole and supplementary angle, on End is less than 12~15 cm of cell wall top;The mold thickness of side through hole is smaller 1cm than the thickness of cell wall, i.e., in mold releasability backside via 8 Do not communicate with the cross-section of river of gool, got through as needed with hand hammer in actual.
Its both ends of prefabricated component set two holes for hoist 13 respectively, diagonally arranged.It is single that hole for hoist is located at end first On the position of second unit member distributing bar 10 of first component distributing bar 9, in the lower part of distributing bar 11.
The concrete includes cement, coarse sand and limestone or granite, the particle diameter of limestone or granite for 5~ 30mm, coarse sand particle diameter are 1~5mm, and cement, coarse sand and limestone or granite prepare the concrete using C20 labels, and grading is 2 grades.
The unit member distributing bar is by 1 larger U-shaped muscle and 1 less U-shaped muscle and 1 shorter U The superposition of shape muscle is welded.There is crotch at the top of larger U-shaped muscle, be overlapped on less U-shaped muscle and weld, shorter U-shaped Muscle bottom reinforcement 12 is welded on the U-shaped bottom being superimposed.
Taken construction method comprises the following steps:
(1)Clear base unwrapping wire:The width that the maximum width taken more than prefabricated component is 20-30cm is as clear baseline, using lime Powder identification scribe;
(2)Excavated using excavator or manually in the region of pulverized limestone identification scribe, the rational stacking earthwork, and manually Levelling bottom, determines sideline and the Bottom Altitude of installation;
(3)The prefabricated component of construction site will be transported to, be lifted with excavator, the prefabricated component sling is put into foundation trench, it is right Quasi- sideline and Bottom Altitude is leveled up, then, remove suspension hook;
(4)After installation, the site error for having installed prefabricated component is corrected, reaches design requirement, and reinforcing prevents from deforming;
(5)With the U-shaped docking groove of cement fine sand slurry filling prefabricated component joint, the weight ratio of cement and fine sand is 1:4-5, Mortar with hold it is agglomerating preferably;
(6)After mortar joint condenses, the gap on backfill prefabricated component both sides, compacting, remaining earth material etc. is transported out of.

Claims (6)

  1. A kind of 1. water channel engineering system, it is characterised in that:The water channel engineering system includes water channel gool prefabricated component(1), water Canal threeway prefabricated component(2), water channel corner prefabricated component(4), water channel side lead to prefabricated component(5)Pass by one's way prefabricated component with water channel(7);The water Canal is passed by one's way prefabricated component(7)Preparation is provided with water channel cover board prefabricated component(6);Docking groove is equipped with each prefabricated component end face(3); By the water channel gool prefabricated component(1), water channel threeway prefabricated component(2), water channel corner prefabricated component(4), water channel side lead to prefabricated component(5) Pass by one's way prefabricated component with water channel(7)Carried out corresponding to connection according to water channel system design considerations, connect and compose water channel engineering system.
  2. 2. water channel engineering system according to claim 1, it is characterised in that:The prefabricated component is framework of steel reinforcement and coagulation Soil is formed, and the framework of steel reinforcement is wrapped up by concrete.
  3. 3. water channel engineering system according to claim 1, it is characterised in that:The prefabricated component in mould by pouring Shaping is made after concrete, cross-section of river shape is inverted trapezoidal structure in obtained prefabricated component groove.
  4. 4. water channel engineering system according to claim 1, it is characterised in that:Its groove madial wall of the prefabricated component and bottom Angle is 95 °~98 °, is connected using chamfered transition, and chamfer angle is 45 ° or 60 °.
  5. 5. water channel engineering system according to claim 1, it is characterised in that:Hole for hoist is equipped with the prefabricated component (13).
  6. 6. water channel engineering system according to claim 1, it is characterised in that:The water channel side leads to prefabricated component(5)In side Wall middle is equipped with the side through hole of square small displacement(8), side through hole(8)In interior narrow outer width shape.
CN201721055019.1U 2017-08-22 2017-08-22 A kind of water channel engineering system Active CN207327274U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108839212A (en) * 2018-06-24 2018-11-20 潘春光 A kind of mold structure for precast concrete column
CN110416959A (en) * 2019-06-27 2019-11-05 中国建筑西北设计研究院有限公司 A kind of integrated cable ditch and the prefabricated assembled device and its application method in gutter
CN112962523A (en) * 2021-02-08 2021-06-15 水利部交通运输部国家能源局南京水利科学研究院 Dam frost heaving prevention protection structure and construction method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108839212A (en) * 2018-06-24 2018-11-20 潘春光 A kind of mold structure for precast concrete column
CN110416959A (en) * 2019-06-27 2019-11-05 中国建筑西北设计研究院有限公司 A kind of integrated cable ditch and the prefabricated assembled device and its application method in gutter
CN110416959B (en) * 2019-06-27 2020-06-23 中国建筑西北设计研究院有限公司 Prefabricated assembly type device integrating cable trench and drainage trench and use method thereof
CN112962523A (en) * 2021-02-08 2021-06-15 水利部交通运输部国家能源局南京水利科学研究院 Dam frost heaving prevention protection structure and construction method
CN112962523B (en) * 2021-02-08 2021-09-28 水利部交通运输部国家能源局南京水利科学研究院 Dam frost heaving prevention protection structure and construction method

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