CN109339215B - Device and method for replacing water inlet and outlet gates without water interruption - Google Patents
Device and method for replacing water inlet and outlet gates without water interruption Download PDFInfo
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- CN109339215B CN109339215B CN201811387887.9A CN201811387887A CN109339215B CN 109339215 B CN109339215 B CN 109339215B CN 201811387887 A CN201811387887 A CN 201811387887A CN 109339215 B CN109339215 B CN 109339215B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 238000009434 installation Methods 0.000 claims description 19
- 230000009189 diving Effects 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 239000002274 desiccant Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- Hydrology & Water Resources (AREA)
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Abstract
The invention relates to a device and a method for replacing a water inlet and outlet gate without water interruption, wherein a flow guiding pipe drainage structure is arranged: a diversion pipe is continuously arranged in a water inlet pipeline of the sluice well, the sluice well and a water outlet pipeline of the sluice well; a gate frame is arranged on the diversion pipe in a penetrating way; the gap between the flow guide pipe and the water inlet pipeline and the gap between the flow guide pipe and the water outlet pipeline are respectively blocked by the blocking parts; the inlet water of the gate well is sent to a pump room area or a water outlet along the guide pipe; or a cofferdam and guide pipe drainage structure is arranged: a cofferdam is arranged in the gate well and is opposite to the gate to be replaced, and the cofferdam is tightly contacted with the gate well around the inlet of the water outlet pipeline; a honeycomb duct is arranged in the water outlet pipeline and is connected with the cofferdam; a gate frame is arranged on the diversion pipe in a penetrating way; the gap between the honeycomb duct and the water outlet pipeline is plugged by a plugging part; the inlet water of the gate well is sent to the pump room area or the water outlet along the guide pipe. The invention ensures that no water exists in the operation surface for replacing the gate, and is convenient for replacing the gate.
Description
Technical Field
The invention relates to a pump station, in particular to a device and a method for replacing a water inlet and outlet gate without water interruption.
Background
After the pump station operates for many years, the inlet and outlet gate for the water-break function is corroded and damaged in the severe environment, and has great influence on the operation of the pump station and the maintenance of internal equipment and needs to be replaced. According to analysis of the water leakage cause of the box culvert, the main materials of the gate in the water inlet and outlet well are mostly cast iron parts and carbon steel, the gate installation area is poor in environment, most of the gate is in an open position during the operation of a pump station, the mixed gas in the well is exposed, the mixed gas contains acidic substances such as H2S and the like, the gate is easy to corrode, and the main structure of the gate is seriously corroded after the operation for a long time, so that the gate cannot be used.
Each pump station is responsible for the sewage or rainwater transportation of each piece district, can not normally cut off water, and the gate that is in the pump station water inlet and outlet position can not normally change. In the past, the replacement of these gates required the shutoff of access lines (box culverts) for the face water break. In addition, a temporary pump is arranged on the water inlet main pipe and is responsible for pumping and regulating the rain and sewage in the district during the gate replacement. The replacement technology has long period, high cost and high implementation difficulty.
Disclosure of Invention
The invention provides a device and a method for replacing a water inlet and outlet gate without water interruption.
In order to achieve the above purpose, one technical scheme of the present invention is to provide a device for replacing water inlet and outlet gates without water interruption:
Is provided with a honeycomb duct drainage structure: a diversion pipe is continuously arranged in a water inlet pipeline of the sluice well, the sluice well and a water outlet pipeline of the sluice well; a gate frame is arranged on the diversion pipe in a penetrating way; the gap between the flow guide pipe and the water inlet pipeline and the gap between the flow guide pipe and the water outlet pipeline are respectively blocked by the blocking parts; the inlet water of the gate well is sent to a pump room area or a water outlet along the guide pipe;
Or a cofferdam and guide pipe drainage structure is arranged: a cofferdam is arranged in the gate well and is opposite to the gate to be replaced, and the cofferdam is tightly contacted with the gate well around the inlet of the water outlet pipeline; a honeycomb duct is arranged in the water outlet pipeline and is connected with the cofferdam; a gate frame is arranged on the diversion pipe in a penetrating way; the gap between the honeycomb duct and the water outlet pipeline is plugged by a plugging part; the inlet water of the gate well is sent to the pump room area or the water outlet along the guide pipe.
Optionally, the water inlet pipeline corresponding to the flow guiding structure of the flow guiding pipe is single, and the water inlet pipeline and the water outlet pipeline are positioned at the same elevation;
one or more channels of water inlet pipelines corresponding to the cofferdam and diversion pipe drainage structures are arranged, and/or the water inlet pipelines and the water outlet pipelines are not at the same elevation;
the pipe diameter of the flow guide pipe corresponding to the flow guide pipe drainage structure or the cofferdam and flow guide pipe drainage structure ensures that the flow of the flow guide pipe is not lower than 50% of the flow of all the water inlet pipes, or the water cross section of the flow guide pipe is not lower than 50% of the water cross section of all the water inlet pipes.
Optionally, the flow guide pipe corresponding to the flow guide pipe drainage structure is a steel pipe; the honeycomb duct is of a segmented structure and is connected with each other through flanges; a steel bracket for supporting the honeycomb duct is arranged below the honeycomb duct;
the diversion pipe corresponding to the cofferdam and diversion pipe diversion structure is a steel pipe, and one end of the diversion pipe is provided with a flange which is connected with a reserved interface flange of the cofferdam; and a steel bracket for supporting the honeycomb duct is arranged below the honeycomb duct.
Optionally, the shape of the cofferdam is circular arc, or polygonal; the cofferdam is of an integral structure or a structure assembled in a segmented way;
The cofferdam is made of steel and comprises a water baffle made of steel plates and a keel made of profile steel; the keel adopts 10# channel steel; the contact surface of the cofferdam and the gate well beside the inlet of the water outlet pipeline is provided with a soft rubber belt for water stopping;
the height of the cofferdam corresponds to the height from the bottom of the well to the upper part of the gate guide rail; the cofferdam is tightly attached to the pool wall and the pool bottom, and the upper end of the cofferdam is fixed by expansion bolts.
Optionally, a water stop ring is arranged on the diversion pipe penetrating into the water inlet pipeline and the water outlet pipeline in a surrounding manner corresponding to the diversion pipe drainage structure;
The blocking part is corresponding to the cofferdam and diversion pipe drainage structure, is positioned at the outer side of a water stop sheet which is arranged on the diversion pipe in a surrounding way, and is spaced with a set distance from the water stop sheet;
The plugging component corresponding to the diversion pipe drainage structure or the cofferdam and diversion pipe drainage structure comprises road plates paved layer by layer and clay with specified thickness, wherein the clay is arranged between adjacent road plates and between the road plates and the wall surface of a pipeline; the clay is a mixture of cement, yellow mud and a quick drying agent; a row of spaced reverse harrow tips are nailed between the road plate and the top of the pipeline; the clay is arranged between the rake tips or on the rake tips.
Another technical solution of the present invention is to provide a method for continuously replacing a water inlet and outlet gate, using any one of the above devices for continuously replacing a water inlet and outlet gate, the method comprising:
the following procedures are implemented by using the honeycomb duct drainage structure:
each section of the honeycomb duct is hung into a sluice well to be placed in position; connecting the sections of the flow guide pipes, wherein a gate frame penetrates through the flow guide pipe before the last section of the flow guide pipe is connected; after the last section of honeycomb duct is connected, the whole position of the honeycomb duct is adjusted, and a bracket below the honeycomb duct is installed for supporting; the gaps among the diversion pipe, the water inlet pipeline and the water outlet pipeline are plugged by diving; pumping out residual water after maintaining the plug; entering a gate installation stage;
or the following processes implemented by using the cofferdam and the flow guiding pipe drainage structure:
Each section of the cofferdam and the honeycomb duct is hung into a gate well to be placed in position; assembling and connecting cofferdams; fixing the cofferdam, and plugging a gap between the cofferdam and a gate well contact surface beside an inlet of an outlet pipeline; before the guide pipe is connected with the cofferdam, a gate frame is penetrated on the guide pipe; the whole position of the honeycomb duct is adjusted, and a bracket below the honeycomb duct is installed for supporting; the cofferdam is connected with the honeycomb duct; the gap between the honeycomb duct and the water outlet pipeline is plugged by diving; pumping out residual water in the cofferdam after maintaining the plug; entering a gate installation stage.
Optionally, when gap blocking is performed, a diver enters a blocking position in a gate well, firstly, garbage in the blocking pipeline position is cleaned and fished, and then cement is used for: yellow mud: quick drying agent=1:2:0.1, plugging the road plates paved layer by layer, starting plugging below the guide pipe, gradually upwards, closing up right above the guide pipe, and maintaining the plugs;
when a foundation is laid, firstly, a layer of adhesive soil is smeared on the bottom surface of the pipe, and then a road plate is built on the pipe, wherein 2-3 cm of adhesive soil is arranged between the road plates or between the road plate and the wall surface of the pipe; the width of the foundation bottom surface is not lower than the width of 2 bricks and is matched with the pipe diameter and the water level;
when the road plate is built on the top of the pipeline, a row of reverse harrow tips are nailed between the road plate and the top of the pipeline, the nailing is repeated at intervals until the road plate is nailed, and then the adhesive soil is smeared or plugged between the reverse harrow tips.
Optionally, in the process of using the cofferdam and the diversion pipe drainage structure, the height of the cofferdam is matched with the depth of the bottom hole, the on-site water inflow Q and the pipe diameter D of the diversion pipe; the gravity flow velocity of the diversion pipe is 1m/s, and the diversion caliber is selected so that the water inflow of the gate well meets Q=3.14 (D/2) 2*1;
when the cofferdam is installed, after the diver assembles each section in the well, the cofferdam is moved to the front of the gate to be replaced, so that the cofferdam is tightly attached to the pool wall and the pool bottom, and the upper end is fixed by expansion bolts;
after the cofferdam is installed, connecting a flange of the diversion pipe with a reserved interface flange of the cofferdam;
After the installation of the diversion pipe is finished, a diver supports the diversion pipe by adopting a blocking method at the outer side of a water stop sheet of the diversion pipe, so that water flowing out of the diversion pipe flows into the cofferdam, and the blocking position is 10cm away from the water stop sheet and is incompletely blocked, so that the diversion pipe has a certain movable space;
Pumping out residual water in the cofferdam by adopting a water pump, and pressing the cofferdam on a pool wall and a pool bottom by water pressure; checking the leakage condition of the cofferdam, and plugging off the leakage points by divers in a form of diving brick sealing; after the cofferdam is watertight, the gap between the honeycomb duct and the water outlet pipeline is blocked, so that the construction working face enters a gate installation stage after no water enters.
Optionally, when the gate is installed, a door frame, a gate body and a gate guide rail are sequentially installed, and a hoist and a connecting screw rod are installed; through test operation, the gate is ensured to be closed to the bottom without blocking, and secondary grouting is carried out on the gate frame after the gap of the sealing surface is uniform; the gate is fixed by stainless steel chemical bolts; the grouting parts of the door frame and the guide rail are planted with ribs; the gate grouting concrete adopts H-80 high-strength shrinkage-free grouting material.
The invention provides a device and a method for replacing a water inlet and outlet gate without water interruption, which are used for guiding rainwater and sewage into a water inlet pump chamber or a water outlet main pipe in a flow guiding pipe drainage mode so as to ensure no water in a working surface for replacing the gate; or the rain sewage in the water inlet and outlet well is separated from the area where the gate needs to be replaced by the mode of adding the guide pipe into the steel cofferdam, and the rain sewage is isolated by the steel cofferdam and the guide pipe and is led to the water outlet of the pump house or the pump station, so that no water exists in the operation surface for replacing the gate.
Drawings
FIG. 1 is a schematic illustration of a flow-through approach;
FIG. 2 is a schematic illustration of a draft tube;
Fig. 3 is a schematic view of the steel cofferdam with draft tube.
Detailed Description
The invention provides a device and a method for replacing a water inlet and outlet gate without water interruption, which are realized in a honeycomb duct drainage mode in the embodiment shown in figure 1.
The gate is replaced in a flow guide pipe drainage mode, so that the device is more suitable for the condition that the space of the gate well 40 is smaller, the pump station flow is small (the total pump station flow is lower than 2.0m 3/s), the water inlet pipeline 21 is single, and the water inlet pipeline 21 and the water outlet pipeline 22 of the gate well 40 are at the same elevation, and the flow guide pipe 10 is convenient to install under the working condition. The technology can restore the operation of the pump station as soon as possible, has simple construction, no complex process requirements and low cost for replacing the gate.
When the gate is replaced by the "flow guide tube drainage mode", the pipe diameter of the flow guide tube 10 is selected according to the actual flow or relevant regulations of the water service bureau. In this example, to ensure the normal operation of the pump station, the flow rate of the pipeline cannot be lower than 50% of the original water inlet pipeline during non-flood prevention, so the pipe diameter D of the guide pipe 10 is selected to be not lower than 50% of the original water inlet pipeline 21 when the cross section of the water is required to be full.
The diversion pipe 10 is connected in a water inlet and outlet pipeline of the sluice well 40 by using a steel pipe, and water inlet to the sluice well 40 enters a pump room area or a water outlet through the diversion pipe 10, so that no water in the sluice well (at a position 41) for replacing the sluice is ensured, and the sluice is convenient to replace. The sign 50 is a shutter that needs to be replaced.
The construction method for replacing the gate by continuous water in a honeycomb duct drainage mode comprises the following steps of: manufacturing a honeycomb duct 10; the sections are hoisted into the sluice wells 40 to be put into place; the gate door frame penetrates into the flow guide pipe 10 before the last section of the flow guide pipe 10 is connected (shown by a mark 60); after the last section of honeycomb duct 10 is connected, the whole position of the honeycomb duct 10 is adjusted, and a lower bracket is installed; the gap between the honeycomb duct 10 and the original water inlet and outlet pipeline is plugged by diving 30; pumping out residual water after maintaining the plug; and entering the next gate installation stage.
The draft tube 10 with corresponding length is manufactured according to the width L1 of the sluice well 40 and the length L2 of the water inlet and outlet pipeline respectively extending into the sluice well 40. The diversion pipes 10 are generally manufactured in sections and are connected by flanges 11, and the length of each section of diversion pipe 10 is required to meet the requirements of hoisting and installation in the well according to the width of the sluice well 40. Preferably, the length of each length of draft tube 10 is less than the width L1 of the sluice well 40. A water stop ring 12 (figure 2) is also arranged outside the guide pipe 10 penetrating into the water inlet and outlet pipe.
When the diversion pipe 10 is installed, normally running sluice wells 40 cannot completely cut off water, and dry seasons and lower water inflow time (at night) are usually selected for carrying out; the installation is generally carried out by divers under the guidance of an installer, and the installation safety (the operation safety of a pump station and the installation of an operator) can be ensured only when the common installer does not go into the well during the construction period. The diversion pipe 10 is hoisted in a sectional manner, the diversion pipe 10 is supported by a steel bracket after installation, the diversion pipe 10 is located at the center of an original water inlet and outlet pipeline, gaps between the diversion pipe 10 and the original pipeline are uniform, a diver seals the gaps between the diversion pipe 10 and the original pipeline by adopting a diving brick, water enters a pump station pump chamber or a pump station water outlet along the diversion pipe 10 and does not enter the sluice well 40, and finally excess water in the sluice well 40 is pumped out by a diving pump, so that a water-free state in the sluice well 40 can be ensured.
When gap blocking is carried out, a diver wears a JQ-83 diving suit to enter a blocking position in the gate well 40, firstly, garbage in the blocking pipeline position is cleaned and fished, then a pavement slab (490 x 65) and mixed mud (cement: yellow mud: quick drying agent=1:2:0.1) are paved layer by layer to block causeway, blocking is started below the guide pipe 10, gradually upwards, and finally, closing in is carried out right above the guide pipe 10, and plug maintenance is carried out. When the foundation is laid, a layer of adhesive soil is firstly smeared on the bottom surface of the pipe, and then the road plate is built on the pipe, wherein the adhesive soil with the density of 2-3 cm is required between the road plates or between the road plate and the wall surface of the pipeline. The width of the foundation bottom surface is determined according to the pipe diameter and the water level (the width of the brick is not less than 2 channels is recommended). The success or failure of plugging the pipeline is directly affected by the quality of the closing, when the road plate is built on the top of the pipeline, a row of reverse harrow tips are nailed between the road plate and the top of the pipeline, the nailing is repeatedly performed at intervals until the closing is performed, and then the adhesive soil is smeared between or plugged on the reverse harrow tips.
The embodiment of the invention as shown in fig. 3 is realized by a mode of steel cofferdam and honeycomb duct:
The gate is replaced by the mode of steel cofferdam and diversion pipe, and is more suitable for the condition that the space of the water inlet gate well 40 is large, the multipath water inlet pipelines 23 are arranged in the well, and the elevation of multipath pipelines in the gate well 40 is different, so that the diversion pipe 10 is installed under the working condition, the difficulty is high, the construction is difficult, and the gate cannot be replaced by adopting the diversion pipe diversion mode. Therefore, the flow guiding mode of the flow guiding pipe is optimized and upgraded, the steel cofferdam and flow guiding pipe mode is formed to replace the gates, the steel cofferdam 70 is mainly adopted to isolate the gate replacement working face, and the flow guiding pipe 10 is combined to guide the flow, so that the construction working face is free of water, and the normal operation of a pump station is guaranteed.
The pipe diameter selection principle of the flow guide pipe 10 in the mode of the steel cofferdam and the flow guide pipe is consistent with that in the flow guide pipe drainage mode in the embodiment one.
The construction method for replacing the gate by continuous water in the mode of steel cofferdam and honeycomb duct comprises the following steps: manufacturing a steel cofferdam 70 and a honeycomb duct 10; the steel cofferdam 70 and the diversion pipe 10 are hung into the gate well 40 in sections and placed in position; the steel cofferdam 70 is assembled and connected; fixing the steel cofferdam 70 and plugging gaps; before the honeycomb duct 10 is connected, a gate door frame penetrates into the honeycomb duct 10; the whole position of the honeycomb duct 10 is adjusted and a lower bracket is arranged; the steel cofferdam 70 is connected with the diversion pipe 10; the gap between the honeycomb duct 10 and the original pipeline is plugged by diving 30; pumping out the residual water in the cofferdam 70 after maintaining the plugs; and entering the next gate installation stage.
The height of the cofferdam 70 is related to the depth of the bottom hole, the on-site water inflow Q and the pipe diameter D of the diversion pipe 10, and the gravity flow velocity of the diversion pipe 10 is generally 1m/s, the diversion caliber is selected to ensure that the water inflow of the sluice well 40 passes through (q=3.14 x (D/2) 2*1) and that no water is accumulated in the sluice well 40, otherwise, the water in the sluice well 40 overflows through the steel cofferdam 70 to enter, and the sluice replacement construction is influenced. The height of the steel cofferdam 70 is generally from the bottom of the well to the height above the gate guide rails, and if the width of the inlet above the gate well 40 is insufficient, the steel cofferdam 70 can be processed in sections and put into the well for assembly.
The cofferdam 70 is generally circular arc shaped to enhance structural strength, and may be polygonal, such as square, depending on the actual shape of the sluice well 40 in situ. The steel cofferdam 70 is made of steel plates and section steel, the keels are made of 10# channel steel, the water baffle is made of steel plates, and soft rubber belts are adhered to the rear contact surface of the water baffle and the gate shaft 40 for water stopping.
When the entrance of the sluice well 40 is generally lower, the steel cofferdam 70 can be segmented into the structure in the well when being installed, and the underground operation is guided by an installation technician on site, the underground operation is performed by a diving team, after the underground assembly is completed, the cofferdam 70 is moved to the front of the sluice gate to be replaced, so that the cofferdam 70 is tightly attached to the pool wall and the pool bottom as much as possible, and the upper end is simply fixed by an expansion bolt. After the cofferdam 70 is installed, the honeycomb duct 10 is connected with a reserved interface flange of the cofferdam 70. After the installation of the diversion pipe 10 is finished, a diver supports the diversion pipe 10 by adopting a plugging method outside the water stop sheet of the diversion pipe 10, meanwhile, the diversion of the water flowing out of the diversion pipe 10 into the cofferdam 70 is ensured, and the gap between the plugging position and the water stop sheet is preferably 10cm, so that the diversion pipe 10 can not be completely plugged, and a certain movable space is provided. After the preparation work is finished, the residual water in the cofferdam (at the position of a mark 71) is pumped out in a short time by adopting a large-flow water pump, the cofferdam 70 is pressed on the pool wall and the pool bottom by water pressure, finally, the leakage condition of the cofferdam 70 is checked, and the leakage point is plugged by a diver in a form of a diving brick seal. After the cofferdam 70 is watertight, the gap between the flow guide pipe 10 and the water outlet pipeline 24 is sealed off, so that no water enters the construction working face, and the next gate replacement link can be entered.
In the first embodiment and the second embodiment, when the gate is normally installed, the door frame is firstly installed, then the gate body is installed, finally the gate guide rail is installed, the headstock gear and the connecting screw rod are installed, through test operation, the gate has no blocking phenomenon, the gate is closed to the bottom, the gap between sealing surfaces is required to be uniform, secondary grouting is carried out on the door frame, most of the original embedded parts and the original gate are possibly fallen off when the original gate is dismantled, the gate fixing bolts cannot be reused, stainless steel bolts are adopted for fixing, the bolt materials are stainless steel 304, the model is M24-480 (new wave verification specification), the grouting positions of the door frame and the guide rail are planted with the steel bars (14 mm), the spacing between the planted steel bars is 15cm, and the steel bars (14 mm) are longitudinally bound and woven in double rows.
The gate installation period mainly depends on the concrete time of secondary grouting, and in order to shorten the gate replacement time and ensure the grouting quality, the gate grouting concrete adopts a special grouting material (H-80 high-strength non-shrinkage grouting material), and the grouting material has the characteristics of high fluidity, non-shrinkage, early strength, high strength and good self-sealing performance; and the quality is reliable, and the final setting effect can be achieved within 10 hours.
Product performance index:
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (8)
1. A device for replacing a water inlet and outlet gate without water interruption is characterized in that,
Is provided with a honeycomb duct drainage structure: a diversion pipe is continuously arranged in a water inlet pipeline of the sluice well, the sluice well and a water outlet pipeline of the sluice well; the sections of the diversion pipe are hung into the sluice gate well to be placed in position, the sections of the diversion pipe are connected, and the sluice gate frame is penetrated on the diversion pipe before the last section of the diversion pipe is connected; the gap between the flow guide pipe and the water inlet pipeline and the gap between the flow guide pipe and the water outlet pipeline are respectively blocked by the blocking parts; the inlet water of the gate well is sent to a pump room area or a water outlet along the guide pipe; the water inlet pipeline corresponding to the flow guiding pipe drainage structure is single, and the water inlet pipeline and the water outlet pipeline are positioned at the same elevation;
Or a cofferdam and guide pipe drainage structure is arranged: a cofferdam is arranged in the gate well and is opposite to the gate to be replaced, and the cofferdam is tightly contacted with the gate well around the inlet of the water outlet pipeline; a honeycomb duct is arranged in the water outlet pipeline and is connected with the cofferdam; the diversion pipe is hung into the sluice gate well in sections and placed in position, and the sluice gate frame penetrates through the diversion pipe before the diversion pipe is connected with the cofferdam; the gap between the honeycomb duct and the water outlet pipeline is plugged by a plugging part; the inlet water of the gate well is sent to a pump room area or a water outlet along the guide pipe; one or more channels of water inlet pipelines corresponding to the cofferdam and diversion pipe drainage structure are arranged, and the water inlet pipeline and the water outlet pipeline are not positioned at the same elevation;
the pipe diameter of the flow guide pipe corresponding to the flow guide pipe drainage structure or the cofferdam and flow guide pipe drainage structure ensures that the flow of the flow guide pipe is not lower than 50% of the flow of all the water inlet pipes, or the water cross section of the flow guide pipe is not lower than 50% of the water cross section of all the water inlet pipes.
2. The apparatus for continuously replacing a water inlet and outlet gate according to claim 1, wherein said draft tube corresponding to said draft tube draft structure is a steel tube; the sections of the guide pipe are connected with each other by flanges; a steel bracket for supporting the honeycomb duct is arranged below the honeycomb duct;
the diversion pipe corresponding to the cofferdam and diversion pipe diversion structure is a steel pipe, and one end of the diversion pipe is provided with a flange which is connected with a reserved interface flange of the cofferdam; and a steel bracket for supporting the honeycomb duct is arranged below the honeycomb duct.
3. The apparatus for continuously replacing a water inlet and outlet gate according to claim 1, wherein the cofferdam is circular arc-shaped or polygonal; the cofferdam is of an integral structure or a structure assembled in a segmented way;
The cofferdam is made of steel and comprises a water baffle made of steel plates and a keel made of profile steel; the keel adopts 10# channel steel; the contact surface of the cofferdam and the gate well beside the inlet of the water outlet pipeline is provided with a soft rubber belt for water stopping;
the height of the cofferdam corresponds to the height from the bottom of the well to the upper part of the gate guide rail; the cofferdam is tightly attached to the pool wall and the pool bottom, and the upper end of the cofferdam is fixed by expansion bolts.
4. The device for replacing a water inlet and outlet gate without water interruption according to claim 1, wherein a water stop ring is arranged on a diversion pipe penetrating into a water inlet pipeline and a water outlet pipeline in a surrounding manner at least corresponding to the diversion pipe drainage structure;
The blocking part is corresponding to the cofferdam and diversion pipe drainage structure, is positioned at the outer side of a water stop sheet which is arranged on the diversion pipe in a surrounding way, and is spaced with a set distance from the water stop sheet;
The plugging component corresponding to the diversion pipe drainage structure or the cofferdam and diversion pipe drainage structure comprises road plates paved layer by layer and clay with specified thickness, wherein the clay is arranged between adjacent road plates and between the road plates and the wall surface of a pipeline; the clay is a mixture of cement, yellow mud and a quick drying agent; a row of spaced reverse harrow tips are nailed between the road plate and the top of the pipeline; the clay is arranged between the rake tips or on the rake tips.
5. A method for replacing a water inlet and outlet gate without interruption, using the device for replacing a water inlet and outlet gate without interruption according to any one of claims 1 to 4, the method comprising
The following procedures are implemented by using the honeycomb duct drainage structure:
each section of the honeycomb duct is hung into a sluice well to be placed in position; connecting the sections of the flow guide pipes, wherein a gate frame penetrates through the flow guide pipe before the last section of the flow guide pipe is connected; after the last section of honeycomb duct is connected, the whole position of the honeycomb duct is adjusted, and a bracket below the honeycomb duct is installed for supporting; the gaps among the diversion pipe, the water inlet pipeline and the water outlet pipeline are plugged by diving; pumping out residual water after maintaining the plug; entering a gate installation stage;
or the following processes implemented by using the cofferdam and the flow guiding pipe drainage structure:
each section of the cofferdam and the honeycomb duct is hung into a gate well to be placed in position; assembling and connecting cofferdams; fixing the cofferdam, and plugging a gap between the cofferdam and a gate well contact surface beside an inlet of an outlet pipeline; before the guide pipe is connected with the cofferdam, a gate frame is penetrated on the guide pipe; adjusting the integral position of the flow guide pipe and installing the flow guide pipe
The square bracket is used for supporting; the cofferdam is connected with the honeycomb duct; the gap between the honeycomb duct and the water outlet pipeline is plugged by diving; pumping out residual water in the cofferdam after maintaining the plug; entering a gate installation stage.
6. A method of continuously replacing a water inlet and outlet gate as set forth in claim 5, wherein,
When gap blocking is carried out, a diver enters a blocking position in a gate well, firstly, garbage in the blocking pipeline position is cleaned and fished, and then cement is used for: yellow mud: quick drying agent=1:2:0.1, plugging the road plates paved layer by layer, starting plugging below the guide pipe, gradually upwards, closing up right above the guide pipe, and maintaining the plugs;
when a foundation is laid, firstly, a layer of adhesive soil is smeared on the bottom surface of the pipe, and then a road plate is built on the pipe, wherein 2-3 cm of adhesive soil is arranged between the road plates or between the road plate and the wall surface of the pipe; the width of the foundation bottom surface is not lower than the width of 2 bricks and is matched with the pipe diameter and the water level;
when the road plate is built on the top of the pipeline, a row of reverse harrow tips are nailed between the road plate and the top of the pipeline, the nailing is repeated at intervals until the road plate is nailed, and then the adhesive soil is smeared or plugged between the reverse harrow tips.
7. A method of continuously replacing a water inlet and outlet gate as set forth in claim 5, wherein,
In the process of using the cofferdam and the diversion pipe drainage structure, the height of the cofferdam is matched with the depth of the bottom of the well, the on-site water inflow Q and the pipe diameter D of the diversion pipe; the gravity flow velocity of the diversion pipe is 1m/s, and the diversion caliber is selected so that the water inflow of the gate well meets Q=3.14 (D/2) 2*1;
when the cofferdam is installed, after the diver assembles each section in the well, the cofferdam is moved to the front of the gate to be replaced, so that the cofferdam is tightly attached to the pool wall and the pool bottom, and the upper end is fixed by expansion bolts;
after the cofferdam is installed, connecting a flange of the diversion pipe with a reserved interface flange of the cofferdam;
after the installation of the diversion pipe is finished, the diver adopts a blocking method outside the water stop sheet of the diversion pipe to block the diversion pipe
The honeycomb duct is supported, so that water flowing out of the honeycomb duct flows into the cofferdam, and the gap between the plugging position and the water stopping sheet is 10cm and is incompletely sealed, so that the honeycomb duct has a certain movable space;
Pumping out residual water in the cofferdam by adopting a water pump, and pressing the cofferdam on a pool wall and a pool bottom by water pressure; checking the leakage condition of the cofferdam, and plugging off the leakage points by divers in a form of diving brick sealing; after the cofferdam is watertight, the gap between the honeycomb duct and the water outlet pipeline is blocked, so that the construction working face enters a gate installation stage after no water enters.
8. A method of continuously replacing a water inlet and outlet gate as set forth in claim 5, wherein,
When the gate is installed, a door frame, a gate body and a gate guide rail are sequentially installed, and an opening and closing machine and a connecting screw rod are installed;
through test operation, the gate is ensured to be closed to the bottom without blocking, and secondary grouting is carried out on the gate frame after the gap of the sealing surface is uniform; the gate is fixed by stainless steel chemical bolts; the grouting parts of the door frame and the guide rail are planted with ribs; the gate grouting concrete adopts H-80 high-strength shrinkage-free grouting material.
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| CN110004957B (en) * | 2019-04-02 | 2022-09-13 | 武大巨成结构股份有限公司 | A formula of falling bottom prestressing force cofferdam device under water for water intaking working well |
| CN110004958B (en) * | 2019-04-02 | 2022-08-26 | 武大巨成结构股份有限公司 | Bottom-hollow type underwater prestressed steel cofferdam device for water taking working well |
| CN112609806A (en) * | 2020-12-04 | 2021-04-06 | 中国建筑第八工程局有限公司 | New and old pump station communication method |
| CN112761173B (en) * | 2021-01-19 | 2026-01-16 | 中建铁路投资建设集团有限公司 | A dewatering diversion structure for well connection and its reverse construction method |
| CN115217205A (en) * | 2022-05-30 | 2022-10-21 | 中建三局安装工程有限公司 | Cofferdam water guide continuous flow gate installation construction method and system |
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| JP2005009274A (en) * | 2003-06-16 | 2005-01-13 | Nakamura Tekko Kk | Diversion gate of weir |
| CN101824814B (en) * | 2010-05-19 | 2011-08-24 | 葛洲坝集团第一工程有限公司 | Method for plugging diversion tunnel without cutoff by using cast-in-place reinforced concrete gate and the gate |
| CN204081052U (en) * | 2014-10-23 | 2015-01-07 | 重庆大学 | The efficient catchpit of a kind of urban rainfall runoff |
| KR101908577B1 (en) * | 2016-02-02 | 2018-10-16 | 정문비 | Roller gate having dual structure with hinge joint and operating machine |
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