CN111851427A - Novel intercepting and cofferdam body of hydropower station and dam body construction method - Google Patents
Novel intercepting and cofferdam body of hydropower station and dam body construction method Download PDFInfo
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- CN111851427A CN111851427A CN202010711544.4A CN202010711544A CN111851427A CN 111851427 A CN111851427 A CN 111851427A CN 202010711544 A CN202010711544 A CN 202010711544A CN 111851427 A CN111851427 A CN 111851427A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a novel intercepting and cofferdam dam body of a hydropower station, which comprises a concrete frame dam body, wherein concrete auxiliary dams are arranged on two sides of the concrete frame dam body, a mat rolling frame is arranged in the concrete frame dam body and comprises a metal frame, the metal frame is provided with a plurality of water through holes, a mat rolling is fixedly connected to the water facing surface of the metal frame, one end of the mat rolling is fixedly connected with the metal frame, the other end of the mat rolling is fixedly connected with a floating body, a mat rolling locking device is further arranged on the water facing surface of the metal frame, the mat rolling is fixed by the locking device in the rolled state of the mat rolling, and a fixing rod opened and closed by the locking device is further arranged on the metal frame. The novel dam body replaces a stone block closure cofferdam dam body in the prior art, so that the investment of capital is reduced, and the construction period is greatly shortened.
Description
Technical Field
The invention relates to the technical field of water conservancy construction, in particular to a novel intercepting and cofferdam body of a hydropower station and a dam body construction method.
Background
A large amount of stones are conveyed by manpower, material resources and vehicles in the traditional hydropower station building to be pushed into a river to carry out single, double and prop dikes to vertically block and cut off the river, after the cut-off, the river bottom concrete curtain grouting seepage-proofing operation and the construction of a double-layer concrete seepage-proofing wall are carried out, and finally the stones are required to be heightened to the designed flood control height. (refer to design and construction of river closure and cofferdam of the Puzhou dam pivot at page 26 in Puzhou dam pivot project Specification at 12 th phase 1984 and a standard sectional view of a cofferdam riverbed section at page 30) river water flows to downstream from a diversion canal excavated firstly after the river closure is carried out by using stones, a large number of stones are also built through the cofferdam at the downstream outside the cofferdam, seepage-proofing operation of river bottom concrete curtain grouting and double-layer seepage-proofing muddy soil wall operation are carried out, and after the construction, water in the cofferdam is pumped, and various equipment construction of a hydropower station is started. The construction method in the prior art has more defects: the construction period is long, the intercepting cofferdam uses a large amount of stones, the manpower and material resources are used, the vehicle consumption is large, the investment is large, and the seepage-proofing work is difficult.
The application provides a novel intercepting and cofferdam body of a hydropower station and a construction method thereof for solving the problems in the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a novel intercepting and cofferdam body of a hydropower station and a dam body construction method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a novel dam body that dams and cofferdam of power station, its characterized in that, includes concrete frame dam body, concrete frame dam body both sides are provided with the concrete and attach the dam, there is metal mat frame at concrete frame dam body upper reaches side, be provided with the rubber mat on the mat frame, the mat frame includes metal crate, roll mat lower cylinder body, three dead levers and three strands of fixed ropes, cylinder body fixed connection in the one end of mat, the other end fixed mounting of mat in the lower part of metal crate, the mat is rolled up in cylinder body side, forms the cylinder structure jointly, changes to and fixes with fixed rope below the frame, fixed rope one end is fixed below the metal crate, and the other end inserts in the square hole, the square hole is seted up on the metal crate of cylinder structure top, the part in fixed rope inserted the square hole is provided with the plug, the plug is provided with a through hole matched with the fixed rod, and the fixed rod is vertically inserted into the metal frame from top to bottom.
A construction method of a novel hydropower station closure and cofferdam body is characterized by comprising the following steps:
s1: sinking the prefabricated or on-site manufactured concrete frame dam body and the concrete attached dams at two sides into a riverbed with removed soil, sand and stone and weathered rock stratum respectively by using an open caisson construction method, firmly connecting the concrete frame dam body and the concrete attached dams at two sides with the rock stratum, and forming an integral structure to cut off a river;
s2: at the downstream of the dam body, sinking the prefabricated or on-site manufactured concrete frame dam body and the concrete attached dams at the two sides into a riverbed for removing earth, sand and stone and weathered rock stratum respectively by using an open caisson construction method, firmly connecting the concrete frame dam body and the concrete attached dams at the two sides with the rock stratum and forming an integral structure to form a cofferdam structure;
s3: after the dam body and the cofferdam body are built, a diversion channel is dug at one side of a river, a water suction pump is built in the cofferdam area from the side of the dam body to the outside of the cofferdam body, and the mat frames are respectively arranged at the upstream side of the dam body of the dam concrete frame of the dam and the downstream side of the dam body of the cofferdam concrete frame of the dam;
s4: starting a rolling mat frame in the cut-off dam body to enable a floating body to drive the rolling mat to completely shield the water through holes, enabling the rolling mat to be completely attached to a metal frame after being unfolded under the flowing pressure of flowing water, enabling the cut river water of the river to rapidly rise, enabling the river water to flow into a flow guide channel, enabling the water surface at the downstream of the cofferdam to rise, enabling the floating body in the cofferdam to float on the water surface to enable the rolling mat to be attached to the metal frame, and forming a flow blocking structure;
s5: and starting the water suction pump to pump out water in two adjacent dam bodies to provide a section of anhydrous area for large hydropower station construction building.
Further, the open caisson construction method comprises the following steps:
embedding sinking piles at the bottom of the riverbed;
assembling the concrete-soil attached dam and the concrete frame dam body on a construction site to form an open caisson structure, wherein the four concrete-soil attached dams with rectangular sections and the two concrete frame dam bodies with C-shaped sections are arranged on a well wall of the open caisson, and vertical through holes are uniformly distributed in the well wall and are internally provided with connecting ribs;
floating the open caisson to a bridge design position for positioning;
pouring water into the wall of the open caisson and the partition wall, sinking, connecting the segments to be high until the open caisson lands, and pouring concrete into the wall of the open caisson and the partition wall;
pouring open caisson sealing bottom concrete, and performing riprap protection on the periphery of the open caisson;
after water is pumped or the core is filled in the well hole, the pile is sunk in the pile sinking preformed hole, and concrete is poured in the well wall through hole and the pile sinking hole;
and finishing the foundation construction of the concrete attached dam and the concrete dam body frame.
Furthermore, the whole open caisson is formed by splicing a plurality of sections of open caisson in the vertical direction, and the upper and lower adjacent open caisson are in concave-convex fit; each section of the open caisson is formed by splicing a plurality of well wall blocks, and the adjacent well wall blocks are in concave-convex fit; the open caisson is rectangular and comprises four corner well wall blocks and four plane well wall blocks, and the plane well wall blocks are arranged between the adjacent corner well wall blocks; two sides of the corner well wall block are both convex blocks or grooves, two sides of the plane well wall block are both grooves or convex blocks, and the convex blocks are matched with the grooves.
Furthermore, when water is pumped or the core is filled in the well hole, foundation cleaning and leaking stoppage are carried out in the open caisson, the bottom sealing concrete is poured, meanwhile, stone protection is carried out, a top plate is poured to serve as a composite foundation of an anchor foundation, the core is filled in the open caisson, water in the open caisson is extracted from the composite foundation serving as a pier foundation, and proper sealing treatment is carried out on the bottom sealing concrete; the construction step is used for pumping water or filling a core in the open caisson, and aims to offset or resist the load of an upper structure and realize the control of foundation settlement.
Furthermore, the concrete is underwater high-performance, micro-expansive and non-segregation concrete prepared on site.
Compared with the prior art, the invention has the beneficial effects that:
the novel dam body replaces a stone block closure cofferdam in the prior art, so that the investment of capital is reduced, the construction period is greatly shortened, and the mat rolling frame can be preset and directly arranged on the upstream side of the concrete frame dam body after the concrete frame dam body is finished, so that the closure cofferdam is realized; the surplus areas of the mat rolling frame and the dam body of the concrete frame are equal and are of independent structures, and the mat rolling frame and the dam body of the concrete frame can be recycled after construction is finished; the part for controlling the opening and closing of the mat rolling frame is a fixed rod, and the structure is simple and convenient to operate; the invention realizes the function of controllable water resistance only by matching the floating body with the mat.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic view of the overall structure of a novel intercepting and cofferdam body of a hydropower station, which is provided by the invention, observed from one side of the intercepting dam body;
fig. 2 is a schematic view of the overall structure of a novel intercepting and cofferdam body of a hydropower station, which is provided by the invention, observed from one side of the cofferdam body;
fig. 3 is a schematic view of the mat rolling frame structure according to the present invention.
In the figure: 1. a concrete frame dam body; 2. concrete is attached to the dam; 3. rolling the mat frame; 31. a metal frame; 32. rolling up the mat; 33. a float; 34. inserting holes; 35. fixing a rope; 36. fixing the rod; 4. a diversion channel; 5. a water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely 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.
Referring to fig. 1-3, a novel intercepting and cofferdam body of a hydropower station comprises a concrete frame dam body 1, a concrete auxiliary dam 2 and a mat rolling frame;
the mat rolling frame comprises a metal frame 31, the metal frame 31 is provided with a plurality of water passing holes, the water passing holes are rectangular (the metal frame is penetrated through by the water passing holes), the water passing holes are uniformly distributed on the upstream surface of the metal frame 31, the two sides of the metal frame 31 are provided with edge protrusions (the cross section of the metal frame is H-shaped), the upstream surface of the metal frame 31 is fixedly connected with a mat rolling 32, one end of the mat rolling 32 is fixedly connected with the metal frame 32, the other end of the mat rolling 32 is fixedly connected with a floating body 33, the floating body 33 is cylindrical, the side surface of the floating body is fixedly connected with one end of the mat rolling, the height (axial height) of the cylindrical floating body 33 is the same as the width of the mat rolling 33;
the fixing end of the rolling mat 32 is arranged below the water through hole, the rolling mat completely shields the water through hole in an unfolding state, the water through hole is completely exposed in a rolling state, the water facing surface of the metal frame 31 is also provided with a locking device, one end of the rolling mat 32, which is fixed, is provided with a locking device, the locking device comprises a fixing rope 35 fixed below the rolling mat and a fixing rod 36 penetrating into the metal frame from top to bottom, one end of the fixing rope 35 is fixed, the other end of the fixing rope is provided with a plug capable of being inserted into the inserting hole 34 in the metal frame 1, and the plug is provided with a recess or a through hole to be matched with one end of;
a space for accommodating the metal frame 31 is arranged in the concrete frame dam body 1, an opening matched with the metal frame 31 is formed in the upper end of the concrete frame dam body, and C-shaped grooves matched with the edge protrusions of the metal frame 31 are formed in the ends, in contact with the metal frame 31, of the left side and the right side of the concrete frame dam body; a part of the concrete frame dam body 1, which is in contact with the lower end face of the metal frame 31, is provided with a recess, so that the metal frame is embedded into the concrete dam body;
the concrete attached dams 2 are solid concrete columns or hollow concrete columns, one dam body is provided with four concrete attached dams 2, the two concrete attached dams are arranged on two sides of the concrete frame dam body 1 in a group, and the concrete attached dams are fixedly connected with the concrete frame dam body 1.
A construction method of a novel intercepting and cofferdam body of a hydropower station comprises the following steps:
s1: sinking a prefabricated or on-site manufactured concrete frame dam body 1 and the concrete attached dams 2 on the two sides into a riverbed with removed soil, sand and stone and weathered rock stratum respectively by using an open caisson construction method, firmly connecting the concrete frame dam body 1 and the concrete attached dams 2 on the two sides into an integral structure, and forming a cut river of the cut dam body;
s2: at the downstream of the intercepting part, a prefabricated or on-site manufactured concrete frame dam body 1 and concrete attaching dams 2 at two sides are respectively sunk into a riverbed for removing earth, sand and stone and weathered rock strata by using an open caisson construction method, and are firmly connected with the rock strata, so that the concrete frame dam body 1 and the concrete attaching dams 2 at two sides form an integral structure to form a cofferdam body;
s3: after the closure dam body and the cofferdam body are built, a diversion trench 4 is dug at one side of a river, a water pump 5 is built in the cofferdam area from the side of the closure dam body to the outside of the cofferdam body, and the mat frames are respectively installed in the closure dam concrete frame dam body 1 and the cofferdam concrete frame dam body 1 in a hoisting mode;
s4: starting a rolling mat frame on the upstream side of the cut-off dam body to enable the floating body 33 to drive the rolling mat 32 to completely shield the water through hole, the rolling mat 32 is completely attached to the metal frame 31 after being unfolded under the dynamic pressure of the flowing water, the cut river of the river rapidly rises, the river flows into the diversion channel 4, the water surface on the downstream of the cofferdam rises, and the floating body 33 in the cofferdam floats on the water surface to enable the rolling mat 32 to be attached to the metal frame 31, so that a flow blocking structure is formed;
s5: and starting the water suction pump 5 to pump out water in two adjacent dam bodies to provide a section of anhydrous area for large hydropower station construction building.
The open caisson construction technology comprises the following steps: embedding sinking piles at the bottom of the riverbed;
assembling the concrete-soil attached dam and the concrete frame dam body on a construction site to form an open caisson structure, wherein the four concrete-soil attached dams with rectangular sections and the two concrete frame dam bodies with C-shaped sections are arranged on a well wall of the open caisson, and vertical through holes are uniformly distributed in the well wall and are internally provided with connecting ribs;
floating the open caisson to a bridge design position for positioning;
pouring water into the wall of the open caisson and the partition wall, sinking, connecting the segments to be high until the open caisson lands, and pouring concrete into the wall of the open caisson and the partition wall;
pouring open caisson sealing bottom concrete, and performing riprap protection on the periphery of the open caisson;
after water is pumped or the core is filled in the well hole, the pile is sunk in the pile sinking preformed hole, and concrete is poured in the well wall through hole and the pile sinking hole;
and finishing the foundation construction of the concrete attached dam and the concrete dam body frame.
Furthermore, the whole open caisson is formed by splicing a plurality of sections of open caisson in the vertical direction, and the upper and lower adjacent open caisson are in concave-convex fit; each section of the open caisson is formed by splicing a plurality of well wall blocks, and the adjacent well wall blocks are in concave-convex fit; the open caisson is rectangular and comprises four corner well wall blocks and four plane well wall blocks, and the plane well wall blocks are arranged between the adjacent corner well wall blocks; two sides of the corner well wall block are both convex blocks or grooves, two sides of the plane well wall block are both grooves or convex blocks, and the convex blocks are matched with the grooves.
Furthermore, when water is pumped or the core is filled in the well hole, foundation cleaning and leaking stoppage are carried out in the open caisson, the bottom sealing concrete is poured, meanwhile, stone protection is carried out, a top plate is poured to serve as a composite foundation of an anchor foundation, the core is filled in the open caisson, water in the open caisson is extracted from the composite foundation serving as a pier foundation, and proper sealing treatment is carried out on the bottom sealing concrete; the construction step is used for pumping water or filling a core in the open caisson, and aims to offset or resist the load of an upper structure and realize the control of foundation settlement.
Furthermore, the concrete is underwater high-performance, micro-expansive and non-segregation concrete prepared on site.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A novel hydropower station closure and cofferdam dam body is characterized by comprising a concrete frame dam body, wherein concrete auxiliary dams are arranged on two sides of the concrete frame dam body, a mat rolling frame is arranged in the concrete frame dam body, a rubber mat rolling is arranged on the mat rolling frame, the mat rolling frame comprises a metal frame, a cylindrical floating body, three fixing rods and three strands of fixing ropes are arranged below the mat rolling, the cylindrical floating body is fixedly connected to one end of the mat rolling, the other end of the mat rolling is fixedly arranged on the lower portion of the metal frame, the mat rolling is rolled on the side face of the cylindrical floating body to jointly form a cylindrical structure, the fixing ropes are fixed below the frame, one end of each fixing rope is fixed below the metal frame, the other end of each fixing rope is inserted into an inserting hole, the inserting hole is formed in the metal frame above the cylindrical structure, and a plug is arranged on the part in the inserting hole of each fixing rope, the plug is provided with a through hole matched with the fixed rod, and the fixed rod is vertically inserted into the metal frame from top to bottom.
2. A construction method of a novel hydropower station closure and cofferdam body is characterized by comprising the following steps:
s1: sinking the prefabricated or on-site manufactured concrete frame dam body and the concrete attached dams at two sides into a riverbed with removed soil, sand and stone and weathered rock stratum respectively by using an open caisson construction method, firmly connecting the concrete frame dam body and the concrete attached dams at two sides with the rock stratum, and forming an integral structure to cut off a river;
s2: at the downstream of the dam body, sinking the prefabricated or on-site manufactured concrete frame dam body and the concrete attached dams at the two sides into a riverbed for removing earth, sand and stone and weathered rock stratum respectively by using an open caisson construction method, firmly connecting the concrete frame dam body and the concrete attached dams at the two sides with the rock stratum and forming an integral structure to form a cofferdam structure;
s3: after the dam body and the cofferdam body are built, a diversion channel is dug at one side of a river, a water pump is built in the cofferdam area from the side of the dam body to the outside of the cofferdam body, and the mat frames are respectively arranged at the upstream side of the dam body of the dam concrete frame of the dam and the downstream side of the dam body of the cofferdam concrete frame of the dam;
s4: starting a rolling mat frame in the cut-off dam body to enable a floating body to drive the rolling mat to completely shield the water through holes, enabling the rolling mat to be completely attached to a metal frame after being unfolded under the flowing pressure of flowing water, enabling the cut river water of the river to rapidly rise, enabling the river water to flow into a flow guide channel, enabling the water surface at the downstream of the cofferdam to rise, enabling the floating body in the cofferdam to float on the water surface to enable the rolling mat to be attached to the metal frame, and forming a flow blocking structure;
s5: and starting the water suction pump to pump out water in two adjacent dam bodies to provide a section of anhydrous area for large hydropower station construction building.
3. The construction method of the novel intercepting and cofferdam body of the hydropower station as claimed in claim 2, wherein the open caisson construction method comprises the following steps:
embedding sinking piles at the bottom of the riverbed; assembling the concrete-soil attached dam and the concrete frame dam body on a construction site to form an open caisson structure, wherein the four concrete-soil attached dams with rectangular sections and the two concrete frame dam bodies with C-shaped sections are arranged on a well wall of the open caisson, and vertical through holes are uniformly distributed in the well wall and are internally provided with connecting ribs; floating the open caisson to a bridge design position for positioning; pouring water into the wall of the open caisson and the partition wall, sinking, connecting the segments to be high until the open caisson lands, and pouring concrete into the wall of the open caisson and the partition wall; pouring open caisson sealing bottom concrete, and performing riprap protection on the periphery of the open caisson;
after water is pumped or the core is filled in the well hole, the pile is sunk in the pile sinking preformed hole, and concrete is poured in the well wall through hole and the pile sinking hole;
and finishing the foundation construction of the concrete attached dam and the concrete dam body frame.
4. The construction method of the novel intercepting and cofferdam body of the hydropower station as claimed in claim 3, wherein the whole open caisson is formed by splicing a plurality of open caisson sections in the vertical direction, and the adjacent open caisson sections are in concave-convex fit; each section of the open caisson is formed by splicing a plurality of well wall blocks, and the adjacent well wall blocks are in concave-convex fit; the open caisson is rectangular and comprises four corner well wall blocks and four plane well wall blocks, and the plane well wall blocks are arranged between the adjacent corner well wall blocks; two sides of the corner well wall block are both convex blocks or grooves, two sides of the plane well wall block are both grooves or convex blocks, and the convex blocks are matched with the grooves.
5. The construction method of a novel intercepting and cofferdam body of a hydropower station as claimed in claim 4, characterized in that when water is pumped or the core is filled in the well hole, foundation cleaning and leaking stoppage are carried out in the open caisson, the bottom sealing concrete is poured, meanwhile, the stone is thrown for protection, the composite foundation as the anchor foundation is poured by the top plate, the core is thrown in the open caisson, the water in the open caisson is extracted for the composite foundation as the pier foundation, and the bottom sealing concrete is properly sealed; the construction step is used for pumping water or filling a core in the open caisson, and aims to offset or resist the load of an upper structure and realize the control of foundation settlement.
6. The method as claimed in claim 5, wherein the concrete is a high-performance, micro-expansive, non-segregating concrete that is prepared on site.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711544.4A CN111851427A (en) | 2020-07-22 | 2020-07-22 | Novel intercepting and cofferdam body of hydropower station and dam body construction method |
| PCT/CN2020/106534 WO2022016603A1 (en) | 2020-07-22 | 2020-08-03 | New-type closure and coffer dam body of hydropower station, and dam body construction method |
| ZA2021/09318A ZA202109318B (en) | 2020-07-22 | 2021-11-19 | A new type of cut-off dam and cofferdam body of hydropower station and dam body construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711544.4A CN111851427A (en) | 2020-07-22 | 2020-07-22 | Novel intercepting and cofferdam body of hydropower station and dam body construction method |
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| Publication Number | Publication Date |
|---|---|
| CN111851427A true CN111851427A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010711544.4A Pending CN111851427A (en) | 2020-07-22 | 2020-07-22 | Novel intercepting and cofferdam body of hydropower station and dam body construction method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111851427A (en) |
| WO (1) | WO2022016603A1 (en) |
| ZA (1) | ZA202109318B (en) |
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| CN113106993A (en) * | 2021-05-13 | 2021-07-13 | 中建一局集团第一建筑有限公司 | Underground space excavation closure flow guide structure containing inland river channel |
| CN113136839A (en) * | 2021-04-06 | 2021-07-20 | 河北省水利水电勘测设计研究院 | Dam construction automation system and method |
| CN113700012A (en) * | 2021-07-30 | 2021-11-26 | 浙江珊溪水利水电开发股份有限公司 | Diversion cofferdam for aqueduct |
| CN115434349A (en) * | 2022-10-09 | 2022-12-06 | 中冶城市投资控股有限公司 | Water retaining cofferdam |
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| CN114753389B (en) * | 2022-03-28 | 2023-11-28 | 南水北调(山东)机电维修有限责任公司 | Self-sinking type combined steel cofferdam special for repairing canal lining under deepwater condition |
| CN114809045A (en) * | 2022-05-24 | 2022-07-29 | 四川省水利电力工程局有限公司 | Hydropower station factory building cofferdam structure and construction method thereof |
| CN115369977A (en) * | 2022-07-27 | 2022-11-22 | 中国十七冶集团有限公司 | Laying process for crossing newly-built large-diameter drainage pipeline and existing drainage main pipeline |
| CN115506312A (en) * | 2022-09-27 | 2022-12-23 | 中国电建集团成都勘测设计研究院有限公司 | Arrangement method of gorge river course hydro junction diversion building |
| CN117230819B (en) * | 2023-07-27 | 2024-07-02 | 中国水利水电第三工程局有限公司 | Hydropower station factory building foundation pit under stage cofferdam diversion working condition and tail water channel construction method thereof |
| CN117328410B (en) * | 2023-09-07 | 2024-04-23 | 北京城建道桥建设集团有限公司 | Dam blocking construction method with low excavation quantity and rapid construction |
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| CN115434349A (en) * | 2022-10-09 | 2022-12-06 | 中冶城市投资控股有限公司 | Water retaining cofferdam |
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Also Published As
| Publication number | Publication date |
|---|---|
| ZA202109318B (en) | 2022-04-28 |
| WO2022016603A1 (en) | 2022-01-27 |
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