CN112459012A - Canal lining plate repairing method - Google Patents
Canal lining plate repairing method Download PDFInfo
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- CN112459012A CN112459012A CN202011276037.9A CN202011276037A CN112459012A CN 112459012 A CN112459012 A CN 112459012A CN 202011276037 A CN202011276037 A CN 202011276037A CN 112459012 A CN112459012 A CN 112459012A
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- cofferdam
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
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Abstract
The invention provides a canal lining plate repairing method, which comprises the following steps: step S1: arranging relevant fields near a construction area; step S2: manufacturing a pile mould cofferdam and a concrete lining plate; step S3, building a small-sized hoisting device; step S4: installing a pile mould cofferdam in a construction area; step S5: removing the damaged lining plate and lifting out; step S6: hoisting the new concrete lining plate into water and assembling; step S7: filling underwater sealant; step S8: and (5) dismantling the construction facilities. The invention can carry out construction and repair on the channel under the condition of no continuous flow, and ensures the normal use of resident and industrial water.
Description
Technical Field
The invention relates to the field of water conservancy construction, in particular to a canal lining plate repairing method.
Background
In the water delivery operation process of the channel, the concrete lining plate is influenced by various factors such as water level change of the channel, operation condition of a drainage system, freezing and thawing, construction quality and the like, and the concrete lining plate can be damaged by cracking, collapse, floating instability resistance and the like. When the lining plates are damaged, local water head loss is increased and an anti-seepage system is damaged to a certain extent, and slope soil is softened to cause slope instability in severe cases, so that the safe operation of the channel is influenced. In order to avoid further aggravation of deformation and damage of the lining plate and influence on normal water delivery of the main canal, the lining plate needs to be treated and repaired. If the lining plate of the embankment slope is damaged and cutoff measures are taken for repairing, domestic water and industrial water of urban residents along the channel engineering are seriously influenced, the influence range is wide, and the social influence is large. If the construction is carried out in a river, a relative still water area needs to be formed in a construction area, so that the underwater operation of constructors is facilitated, and the personal safety of the constructors is ensured to a certain extent.
Disclosure of Invention
In order to solve the problems, the invention provides a canal lining plate repairing method, which comprises the following steps:
step S1: arranging the construction site in a construction area;
step S2: manufacturing a pile mould cofferdam and a concrete lining plate;
step S3: building a small hoisting device;
step S4: installing a pile mould cofferdam in a construction area;
step S5: removing the damaged lining plate and lifting out;
step S6: hoisting the new concrete lining plate into water and assembling;
step S7: filling underwater sealant;
step S8: and (5) dismantling the construction facilities.
As a further solution, the related fields comprise a channel field construction area, a concrete lining plate processing area, a pile mould cofferdam processing area, a hoisting equipment installation area, a material storage area and a field camp.
As a further solution, the pile mould cofferdam comprises a cofferdam section I along the water flow direction and a cofferdam section II which is respectively arranged at two sides of the cofferdam section I and forms an angle of 45 degrees and an angle of 135 degrees with the water flow direction; the first cofferdam section comprises more than one first steel cofferdam unit; the second cofferdam section comprises more than one second steel cofferdam unit;
as a further solution, the first steel cofferdam unit comprises an underframe, a ballast fixedly connected to the underframe, a steel frame vertically installed in the middle of the underframe, a long inclined strut and a short inclined strut for supporting the steel frame, and a steel plate slidably connected in the steel frame.
As a further solution, the second steel cofferdam unit comprises an inclined bottom frame, a ballast fixedly connected to the inclined bottom frame, an inclined steel frame vertically installed in the middle of the inclined bottom frame, a first inclined strut and a second inclined strut for supporting the inclined steel frame, and a steel plate slidably connected in the steel frame.
As a further solution, the first cofferdam section is arranged at the bottom level of the river channel, the second cofferdam section is arranged at the slope of the river channel, the first cofferdam section and the second cofferdam section are combined to form an isosceles trapezoid without a long bottom side, three sides of the first cofferdam section are enclosed, a static water area is formed in the repair area, and construction is facilitated.
As a further solution, the steel plate is rectangular, a plurality of small holes are formed in the steel plate, water flows pass through the small holes, the water pressure difference of the two sides of the steel plate is reduced, and the steel plate is connected with the long channel steel and the main channel steel in a sliding mode.
As a further solution, the concrete lining plate is formed by splicing a plurality of concrete precast slabs.
As a further solution, the opposite edges of two adjacent concrete prefabricated panels are directly connected through a tenon-and-mortise structure, the side edge of one concrete prefabricated panel is provided with a clamping groove, and the side edge of the other concrete prefabricated panel opposite to the side edge is fixedly connected with a bulge; the protrusion is butted in the clamping groove.
As a further solution, the shape of the protrusion is a trapezoid with a wide upper part and a narrow lower part, and the protrusion is matched with the clamping groove to be connected and fastened and is not easy to fall off.
As a further solution, it is required that the concrete precast slab has a size of 0.98m × 1.98 m.
As a further solution, the concrete precast slabs are totally divided into 6 types according to different splicing positions
As a further solution, the peripheral side walls of the concrete precast slabs are provided with arc-shaped grooves.
As a further solution, the small-sized hoisting device comprises sleepers arranged on a road surface at intervals, slide rails arranged on the sleepers and hoisting equipment connected with the slide rails in a sliding manner; the slide rail is two parallel tracks at least, and every slide rail is mutually perpendicular with the length direction of sleeper.
As a further solution, the hoisting device comprises a hoisting track, a long inclined strut supporting the hoisting track and slidably connected with the slide rail, a short inclined strut supporting the hoisting track and slidably connected with the slide rail, and a weight arranged at the rear end of the hoisting track and a traction rope for drawing the hoisting track.
As a further solution, the concrete size of the sleeper is 14cm × 20cm × 4m, the distance between every two sleepers is 1m, the distance between the sliding rails is 3m, and the sleeper and the sliding rails are connected through bolts.
The beneficial effects obtained by the invention are as follows:
the method for repairing the canal lining plate shortens the construction period, reduces the cost, and reduces the damage to the canal pavement and the flood bank in the construction process and the requirement on the surrounding construction conditions by developing small hoisting equipment without depending on large hoisting equipment such as an automobile crane, a long-arm backhoe and the like.
The concrete lining plates are connected in a clamping and assembling mode through buckles, so that the stability is high and the integrity is good; the connecting joints are sealed by adopting underwater sealant, and the anti-seepage effect is good.
The pile mould cofferdam has simple structure and modular design, can be rapidly installed and disassembled on site, and has low requirement on site construction and hoisting. Because the water blocking surface is small, the influence on the water delivery flow of the channel is small, the stability is high, the damage is not easy to damage, and the water channel is convenient to store, transport and install and is very suitable for the water channel with special requirements on the water delivery flow. Because the method realizes that the dry land construction can be adopted to quickly repair the damaged canal slope lining plate without current interruption, the method can be more suitable for the repair construction of the lining plates at various canal positions, and has good reference function and application and popularization values.
Drawings
Fig. 1 is a schematic layout diagram of the pile mould cofferdam of the invention during construction;
FIG. 2 is a block diagram of a first steel cofferdam unit according to FIG. 1;
fig. 3 is a structural view of a second steel cofferdam unit according to fig. 1;
FIG. 4 is a schematic view of a concrete lining panel according to the present invention;
FIG. 5 is a schematic view of an arcuate groove of a concrete lining panel according to the present invention;
FIG. 6 is a front view of the lifting device of the present invention;
FIG. 7 is a front view of the lifting device of the present invention;
the concrete combined wall comprises a first cofferdam section 1, a second cofferdam section 2, a concrete precast slab 3, sleepers 4, slide rails 5, hoisting equipment 6, an 11 underframe, a 12 steel frame, a 13 long inclined strut, a 14 short inclined strut, a 21 inclined underframe, a 22 inclined steel frame, a 23 inclined strut first, a 24 inclined strut second, a 31 clamping groove, a 32 bulge and a 33 arc-shaped groove.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention provides a canal lining plate repairing method, which comprises the following steps:
step S1: arranging the construction site in a construction area;
step S2: manufacturing a pile mould cofferdam and a concrete lining plate;
step S3: building a small hoisting device;
step S4: installing a pile mould cofferdam in a construction area;
step S5: removing the damaged lining plate and lifting out;
step S6: hoisting the new concrete lining plate into water and assembling;
step S7: filling underwater sealant;
step S8: and (5) dismantling the construction facilities.
As a further solution, the related fields comprise a channel field construction area, a concrete lining plate processing area, a pile mould cofferdam processing area, a hoisting equipment installation area, a material storage area and a field camp.
The invention is described in further detail below with reference to specific figures:
as shown in fig. 1-3, the pile mould cofferdam comprises a cofferdam section I1 along the water flow direction and cofferdam sections II 2 which are respectively arranged at two sides of the cofferdam section I1 and respectively form an angle of 45 degrees and an angle of 135 degrees with the water flow direction; the cofferdam section I1 comprises more than one steel cofferdam unit I; the cofferdam section II 2 comprises more than one steel cofferdam unit II;
as a further solution, the first steel cofferdam unit includes an underframe 11, a ballast weight fixedly connected to the underframe 11, a steel frame 12 vertically installed in the middle of the underframe 11, a long inclined strut 13 and a short inclined strut 14 supporting the steel frame 12, and a steel plate slidably connected in the steel frame 12.
As a further solution, the steel cofferdam unit two includes a sloping bottom frame 21, a ballast weight fixedly connected to the sloping bottom frame 21, a sloping steel frame 22 vertically installed in the middle of the sloping bottom frame 21, a first bracing 23 and a second bracing 24 supporting the sloping steel frame 22, and a steel plate slidably connected in the steel frame 12.
As a further solution, the cofferdam section I1 is arranged at the level of the bottom of the river channel, the cofferdam section II 2 is arranged at the slope of the river channel, the cofferdam section I1 and the cofferdam section II 2 are combined to form an isosceles trapezoid without a long bottom edge, three sides of the cofferdam section I and the cofferdam section II form a static water area in the restoration area, and construction is facilitated.
As a further solution, the underframe comprises three first angle steels arranged at intervals and two second angle steels fixedly connected above two ends of each angle steel; the steel frame comprises two parallel long channel steels and four short channel steels which are fixedly connected with the long channel steels at intervals and are vertical to the long channel steels; the distance between the long channel steels is consistent with the whole width of the arranged first angle steels.
As a further solution, the inclined underframe comprises three angle steels I arranged at intervals and angle steels II fixedly connected above two ends of each angle steel respectively, and the included angle between each angle steel I and each angle steel II is 45 degrees; the steel frame comprises two main channel steels and short channel steels which are fixedly connected with the long channel steels at intervals and are vertical to the long channel steels; one of the main channel steel is longer than the other main channel steel; the distance between the bottom ends of the two main channel steels is consistent with the whole width of the arranged first angle steels.
As a further solution, the first inclined strut and the second inclined strut are four, one end of the first inclined strut is connected with the main channel steel, and the other end of the first inclined strut is connected with the second angle steel; and one end of the second inclined strut is connected with the main channel steel, and the other end of the second inclined strut is connected with the first angle steel.
As a further solution, the bottom of the weir segment two is level with the slope; the top of the cofferdam section II keeps the same horizontal height; and the length of the longer main channel steel in the inclined steel frame of the previous unit of the second steel cofferdam unit is equal to that of the shorter main channel steel in the inclined steel frame of the next unit, and the longer main channel steel and the shorter main channel steel are sequentially connected.
As a further solution, when the second steel cofferdam unit is placed on a slope, the inclined bottom is placed on the slope, the inclined steel frame is kept vertical, and the length relationship between the longer channel steel and the shorter channel steel in the main channel steel is determined by the slope of the slope.
As a further solution, the first steel cofferdam units are connected by bolts; and the second steel cofferdam units are connected through bolts.
As a further solution, the steel plate is rectangular, a plurality of small holes are formed in the steel plate, water flows pass through the small holes, the water pressure difference of the two sides of the steel plate is reduced, and the steel plate is connected with the long channel steel and the main channel steel in a sliding mode.
As shown in fig. 4 and 5, the concrete lining panel is formed by splicing a plurality of concrete precast panels 3; the opposite edges of two adjacent concrete prefabricated panels 3 are directly connected through a tenon-and-mortise structure, the side edge of one concrete prefabricated panel 3 is provided with a clamping groove 31, and the side edge of the other concrete prefabricated panel 3 opposite to the side edge is fixedly connected with a bulge 32; the projection 32 abuts within the slot 31.
As a further solution, the shape of the protrusion 32 is a trapezoid with a wide top and a narrow bottom, and the protrusion is tightly connected with the slot 31 and is not easy to fall off.
As a further solution, it is required that the concrete precast slab 3 has a size of 0.98m × 1.98 m.
As a further solution, the concrete precast slabs 3 are divided into 6 types according to different splicing positions.
As a further solution, the concrete precast slab 3 comprises prestressed steel bars and concrete poured on the prestressed steel bars, wherein the prestressed steel bars are screw-thread steel with a diameter of 10mm, the distance between the prestressed steel bars is 15cm, and the prestressed steel bars are positioned at 1/3 on the bottom of the concrete.
As a further solution, a steel bar hanging ring is bound and connected to the prestressed steel bar, a pit is formed in the position, where the steel bar hanging ring is located, of the concrete precast slab 3, and after the concrete precast slab is hoisted, the underwater sealant is filled to cover the pit, where the steel bar hanging ring is located, so that the surface of the precast slab is flat, and the diameter of the steel bar hanging ring is 10 mm.
As a further solution, the upper end of the steel bar hanging ring is flush with the upper end face of the over-concrete precast slab 3, and the steel bar hanging ring is positioned in the concave pit.
As a further solution, the peripheral side walls of the concrete precast slabs 3 are provided with arc-shaped grooves 33.
As shown in fig. 6 and 7, the small-sized hoisting device comprises sleepers 4 arranged on the road surface at intervals, slide rails 5 arranged on the sleepers 4, and hoisting equipment 6 connected with the slide rails 5 in a sliding manner; the slide rails 5 are at least two parallel rails, and each slide rail 5 is perpendicular to the length direction of the sleeper 4.
As a further solution, the concrete size of the sleeper is 14cm × 20cm × 4m, the distance between every two sleepers is 1m, the distance between the sliding rails is 3m, and the sleeper and the sliding rails are connected through bolts.
As a further solution, the long inclined strut includes a front base connected with the slide rail in a sliding manner, long inclined frames fixedly connected with two ends of the front base respectively, a front cross beam fixedly connected between the two long inclined frames, and a connecting rod connecting the front cross beam and the long inclined frames.
As a further solution, the short inclined strut includes a rear base connected with the slide rail in a sliding manner, a short inclined frame fixedly connected with the rear chassis, and a rear cross beam fixedly connected to the top ends of the two short inclined frames.
As a further solution, the front base and the rear base are both provided with grooves matched with the sliding rails.
As a further solution, the front base and the long inclined strut are connected through bolts, and the rear base and the short inclined strut are connected through bolts.
As a further solution, the hoisting track is connected with the front cross beam in a welding mode, and the hoisting track is connected with the rear cross beam in a welding mode.
As a further solution, one end of the traction rope is fixed at the top end of the long inclined frame, and the other end of the traction rope is fixedly connected with the hoisting track to draw the hoisting track, so that normal construction is guaranteed.
As a further solution, the rear end of the hoisting track is provided with a storage rack, and the weight is placed in the storage rack.
Example (b):
the method disclosed by the invention is used for repairing the canal lining plate, and the arrangement of related fields, including a canal field construction area, a concrete lining plate processing area, a pile mould cofferdam processing area, a hoisting equipment installation area, a material storage area and a field camp serving as a conference office area, is firstly carried out near a construction area.
And designing, processing and manufacturing the pile mould cofferdam in a construction area, and casting and manufacturing the concrete lining plate.
Meanwhile, a small-sized hoisting device is built beside the channel, and the small-sized hoisting device is provided with a space for pedestrians and vehicles to pass through.
The manufacturing materials of the pile mould cofferdam are welded and assembled firstly, the pile mould cofferdam is simply assembled on land, then the small-sized hoisting device hoists the support to the water surface, and the overwater mobile operation platform erected on the spot is used for hoisting the support to the construction area, so that the underwater assembling and installation are completed.
When the lining plates are repaired, the original lining plates are firstly dismantled and divided into blocks, then the blocks are hoisted and transported out by a small hoisting device and a water mobile operation platform, after all the hoists are completed, the sand bags filled in the sunk part of the foundation are roughly leveled, and then the detail adjustment is carried out when the new lining plates are installed. After leveling is finished, the leveling ruler is used for confirming and checking and measuring the field size, and the hanging work is carried out after the position of the newly-installed lining plate is flat and the field size is correct.
And (3) conveying the prefabricated new lining plate to a construction site, assisting the work before hoisting of the new lining plate, after the firmness is determined, installing the prefabricated plate according to an actual measurement result on site to ensure the distance between the expansion joints, hoisting the new lining plate to the position to be installed by an onshore hoisting machine, and after the new lining plate is hoisted into water, launching the diver. The diver is responsible for the position of the new lining board to be straightened and the assembly angle to be adjusted above the water surface of the new lining board, and the diver can communicate with the onshore personnel in time in place through underwater communication. And after the new lining plate is hung in place, the diving personnel carries out tripping work of the hanging belt. The installation sequence of the new lining plates is to follow the layer-by-layer pavement from the lower layer of the bottom of the canal to the upper layer of the water surface of the lateral surface of the canal. And (4) adjusting the angle, sinking to place, removing the lifting hook after the adjustment is finished and the installation is in place, and preparing for installing the next new lining plate. And (4) after the new lining plates are completely paved in place and inspected, and are completely installed in place, the diver conducts underwater video recording for rechecking, and then further fine adjustment is conducted, so that the block lining plate repair is not influenced.
After the installation of the new lining plates is completed, a diver washes and cleans the spliced seams between the new lining plates under water by using a low-pressure water gun, and washes out the seams of impurities in the seams to ensure the cleanness of the seams. After the cleaning operation is finished, a diver fills the butt joint with a special SR plastic water stop material, fills the SR plastic water stop material into a joint cavity, tamps the SR plastic water stop material with a tool, and lays a layer of underwater sealant with scour resistance on the top of the SR plastic water stop material. After all processing is finished, the diver performs underwater video recording for reexamination.
By using the new lining plates, a large-scale construction site is not needed, the new lining plates are connected and locked in a buckling mode, the stability is higher, and the integrity of the lining plates is enhanced; invisible steel bar hanging rings are left on two sides of the new lining plate, and the steel bars are filled with sealant after the hoisting is finished, so that the water quality is not influenced by the exposed steel bars; the arc-shaped groove 33 is formed in the construction joint of the new lining plate, the lower surface is large and the upper surface is small after sealant is filled, falling off is prevented, and meanwhile, the phenomenon that a large amount of bubbles cannot be discharged due to the fact that dead corners are not formed on the side surfaces when the new lining plate is prefabricated is reduced; the lower part of the construction joint is made of flexible SR plastic water-stop material, the top part of the construction joint is sealed by compression-resistant and scour-resistant underwater sealant, and the two materials are made of flexible materials, so that the construction joint can effectively play a role, and the seepage-proofing effect is enhanced.
Claims (5)
1. A canal lining plate repairing method is characterized in that: the method comprises the following steps:
step S1: performing site arrangement in a construction area;
step S2: manufacturing a pile mould cofferdam and a concrete lining plate;
step S3: building a hoisting device;
step S4: installing a pile mould cofferdam in a construction area;
step S5: removing the damaged lining plate and lifting out;
step S6: hoisting the new concrete lining plate into water and assembling;
step S7: filling underwater sealant;
step S8: and (5) dismantling the construction facilities.
2. The canal lining panel restoration method of claim 1, wherein: the field comprises a channel field construction area, a concrete lining plate processing area, a pile mould cofferdam processing area, a hoisting equipment mounting area, a material storage area and a field camp.
3. The canal lining panel restoration method of claim 1, wherein: the pile mould cofferdam comprises a cofferdam section I (1) along the water flow direction and cofferdam sections II (2) which are respectively arranged at two sides of the cofferdam section I (1) and form an angle of 45 degrees and an angle of 135 degrees with the water flow direction respectively; the cofferdam section I (1) comprises more than one steel cofferdam unit I;
the cofferdam section II (2) comprises more than one steel cofferdam unit II;
the first steel cofferdam unit comprises an underframe (11), a ballast fixedly connected to the underframe (11), a steel frame (12) vertically arranged in the middle of the underframe (11), a long inclined strut (13) and a short inclined strut (14) for supporting the steel frame (12) and a steel plate slidably connected in the steel frame (12);
the steel cofferdam unit II comprises an inclined bottom frame (21), a ballast fixedly connected to the inclined bottom frame (21), an inclined steel frame (22) vertically installed in the middle of the inclined bottom frame (21), a first inclined support (23) and a second inclined support (24) for supporting the inclined steel frame (22) and a steel plate slidably connected to the steel frame (12).
4. The canal lining panel restoration method of claim 1, wherein: the concrete lining plate is formed by splicing a plurality of concrete precast slabs (3);
the opposite edges of two adjacent concrete prefabricated plates (3) are directly connected through a tenon-and-mortise structure, a clamping groove (31) is formed in the side edge of one concrete prefabricated plate (3), and a protrusion (32) is fixedly connected to the side edge, opposite to the side edge, of the other concrete prefabricated plate (3); the protrusion (32) is butted in the clamping groove (31);
arc-shaped grooves (33) are formed in the side walls of the periphery of the concrete precast slab (3);
the concrete lining board is divided into 6 types and spliced.
5. The canal lining panel restoration method of claim 1, wherein: the small-sized hoisting device comprises sleepers (4) arranged on a road surface at intervals, slide rails (5) arranged on the sleepers (4) and hoisting equipment (6) connected with the slide rails (5) in a sliding manner;
the slide rails (5) are at least two parallel rails, and each slide rail (5) is perpendicular to the length direction of the sleeper (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276037.9A CN112459012A (en) | 2020-11-16 | 2020-11-16 | Canal lining plate repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011276037.9A CN112459012A (en) | 2020-11-16 | 2020-11-16 | Canal lining plate repairing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112459012A true CN112459012A (en) | 2021-03-09 |
Family
ID=74836290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011276037.9A Pending CN112459012A (en) | 2020-11-16 | 2020-11-16 | Canal lining plate repairing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN112459012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387343A (en) * | 2022-09-07 | 2022-11-25 | 中化学生态水利建设有限公司 | Underwater concrete crack repairing device and construction method |
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| CN206143722U (en) * | 2016-10-20 | 2017-05-03 | 长江勘测规划设计研究有限责任公司 | Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN110541426A (en) * | 2019-09-18 | 2019-12-06 | 南水北调中线干线工程建设管理局 | Be suitable for prosthetic fender structure of enclosing of not cutting off water supply of large-scale water delivery channel |
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2020
- 2020-11-16 CN CN202011276037.9A patent/CN112459012A/en active Pending
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| GB2283039A (en) * | 1993-09-24 | 1995-04-26 | Bank Master Systems Limited | Piling |
| CN206143722U (en) * | 2016-10-20 | 2017-05-03 | 长江勘测规划设计研究有限责任公司 | Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN110541426A (en) * | 2019-09-18 | 2019-12-06 | 南水北调中线干线工程建设管理局 | Be suitable for prosthetic fender structure of enclosing of not cutting off water supply of large-scale water delivery channel |
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| Title |
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| 孔庆慧: "南水北调中线水下衬砌面板变形破坏修复技术", 《水科学与工程技术》 * |
| 左丽等: "深水条件下自平衡组合式钢围堰设计与现场试验研究", 《南水北调与水利科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387343A (en) * | 2022-09-07 | 2022-11-25 | 中化学生态水利建设有限公司 | Underwater concrete crack repairing device and construction method |
| CN115387343B (en) * | 2022-09-07 | 2024-03-29 | 中化学生态水利建设有限公司 | Underwater concrete crack repairing device and construction method |
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Application publication date: 20210309 |