Temporary water passing structure for in-service channel transformation
By setting up earthen bag cofferdams upstream and downstream of the in-service channel and connecting them with steel pipes and flexible hoses, a diversion-diversion-flow system was constructed, which solved the contradiction between continuous water supply and dry land operation during the renovation of the in-service channel, and achieved normal water flow and improved construction efficiency during the channel renovation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional interruption construction methods cannot resolve the contradiction between the continuous water supply demand and the dry working environment during the channel renovation period on existing channels that are responsible for supplying water for daily life, production and ecological purposes in towns and cities along the route.
A combined structure of upstream and downstream cofferdams, steel pipes, flexible hoses, clamps, and gates is adopted. By setting up earthen bag cofferdams upstream and downstream of the channel in service, inserting steel pipes and connecting flexible hoses, a diversion-diversion-flow system is constructed to ensure normal water flow during the channel renovation.
While creating dry construction conditions during the channel renovation, normal water flow in the channel was achieved, construction efficiency and the reuse rate of soil bags were improved, and the damage rate of soil bags was reduced.
Smart Images
Figure CN224213209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of channel renovation technology, and in particular to a temporary water supply structure for the renovation of an in-service channel. Background Technology
[0002] During channel renovation construction, steel sheet piles and earth-rock cofferdams are usually used to cut off the upstream and downstream of the construction area, creating dry construction conditions to facilitate channel dredging, foundation treatment, lining repair and other renovation operations. This technology has been tested by long-term engineering practice and has the advantages of mature construction methods and relatively stable and reliable structure under the conditions of complete flow interruption and allowing long-term water stoppage.
[0003] However, for existing canals that bear the responsibility of supplying water for daily life, production, and ecological purposes in towns along the route, the traditional method of interrupting water flow during construction cannot resolve the contradiction between the rigid requirement of "continuous water supply during construction" and the "dry working environment." This is because existing canals cannot be shut off for extended periods, and all construction work related to canal renovation cannot be completed in a short time within a permissible water outage period.
[0004] Therefore, there is an urgent need to provide a temporary water supply structure for the renovation of in-service channels, which, compared with existing technologies, can create dry construction conditions while ensuring normal water supply to the channels. Utility Model Content
[0005] This utility model solves the technical problems existing in the prior art and provides a temporary water passage structure for the renovation of in-service channels.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A temporary water-passing structure for the renovation of an in-service canal includes an upstream cofferdam, a downstream cofferdam, steel pipes, flexible hoses, clamps, and gates. The upstream cofferdam is located upstream of the construction canal, and the downstream cofferdam is located downstream of the construction canal. The steel pipes are installed inside the upstream cofferdam and the downstream cofferdam. Flexible hoses are fitted between the steel pipes in the upstream cofferdam and the corresponding steel pipes in the downstream cofferdam. Clamps are installed at the connection between the steel pipes and the flexible hoses. Gates are fixedly connected to the side of the steel pipes in the upstream cofferdam away from the construction canal and the side of the steel pipes in the downstream cofferdam away from the construction canal.
[0008] Furthermore, the upstream cofferdam is composed of multiple stacked upstream soil bags, and the upstream soil bags and the upstream soil bags are sealed with water-stop rubber tape or sealing tape.
[0009] Furthermore, the downstream cofferdam is composed of multiple stacked downstream soil bags, and the downstream soil bags and the downstream soil bags are sealed with water-stop rubber tape or sealing tape.
[0010] Furthermore, the staggered length of the upstream and downstream soil bags when stacked is greater than or equal to 1 / 3 of the bag length.
[0011] Furthermore, both the upstream and downstream soil bags are composed of woven bags and clay, with the clay placed inside the woven bags.
[0012] Furthermore, the gate includes a bracket, a handwheel, a screw, and a gate plate. The bracket is fixed to the end of the steel pipe. The screw passes through the bracket and is fixedly connected to the handwheel at the upper end of the bracket. The lower end of the screw is rotatably connected to the bottom of the bracket. The screw passes through the gate plate and is threadedly connected to the gate plate. The gate plate is slidably connected inside the bracket.
[0013] Furthermore, the bracket is provided with a first movable groove and a second movable groove. When the gate is completely located in the second movable groove, the steel pipe is in a closed state; otherwise, the steel pipe is in a conductive state.
[0014] Furthermore, the bracket and the steel pipe are fixedly connected by arc welding.
[0015] Furthermore, the clamp includes two semi-rings and a bolt, with one end of the two semi-rings hinged and the other end detachably connected by the bolt.
[0016] Furthermore, a sealing ring is fitted between the connection between the hose and the steel pipe.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] (1) This utility model uses earthen bag cofferdams to intercept the flow in both the upstream and downstream of the construction channel, creating dry construction conditions. Steel pipes are installed in both the upstream and downstream cofferdams. The steel pipes installed in the upstream cofferdam are connected to the corresponding steel pipes installed in the downstream cofferdam through flexible hoses to guide the flow through the cofferdam and dynamically divert the flow, so as to achieve normal water flow during the channel renovation. This constructs a "interception-guidance-diversion" construction system for the renovation of in-service channels, which achieves the creation of dry construction conditions while ensuring normal water flow in the channel.
[0019] (2) The present invention is made of steel pipe and gate welded together. The hose and steel pipe are detachably connected. The upstream and downstream soil bags are equipped with lifting lugs. The upstream and downstream soil bags are connected by tape. While achieving sealing, it is also easy to disassemble. The damage to the soil bags is low. When constructing the upstream and downstream cofferdams, the upstream and downstream soil bags can be quickly stacked by the crane acting on the lifting lugs. It can achieve convenient disassembly and quick installation, and has a high turnover rate and high reuse rate. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle.
[0022] Figure 3 This is a schematic diagram of the gate structure of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Upstream cofferdam; 11. Upstream soil bags; 2. Downstream cofferdam; 21. Downstream soil bags; 3. Steel pipe; 4. Clamp; 41. Semi-ring; 42. Bolt; 5. Hoses; 6. Construction channel; 7. Gate; 71. Support; 72. Handwheel; 73. Screw; 74. Gate plate; 75. First movable channel; 76. Second movable channel. Detailed Implementation
[0025] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] like Figure 1As shown, this utility model provides a temporary water-passing structure for the renovation of an in-service canal, including an upstream cofferdam 1, a downstream cofferdam 2, steel pipes 3, flexible hoses 5, clamps 4, and a gate 7. The upstream cofferdam 1 is located upstream of the construction canal 6, and the downstream cofferdam 2 is located downstream of the construction canal 6. Multiple steel pipes 3 are installed inside the upstream cofferdam 1, and multiple steel pipes 3 are also installed inside the downstream cofferdam 2. The steel pipes 3 installed in the upstream cofferdam 1 and the steel pipes 3 installed in the downstream cofferdam 2 are arranged in a one-to-one correspondence. Flexible hoses 5 are detachably connected between the corresponding steel pipes 3 of the upstream cofferdam 1 and the downstream cofferdam 2. The body is detachably connected by clamps 4. One end of the hose 5 is sleeved on one end of the steel pipe 3 of the upstream cofferdam 1, and the clamp 4 is sleeved on the outside of the hose 5 and the steel pipe 3 passing through the upstream cofferdam 1 for fixation. The other end of the hose 5 is sleeved on one end of the steel pipe 3 of the downstream cofferdam 2, and the clamp 4 is sleeved on the outside of the hose 5 and the steel pipe 3 passing through the downstream cofferdam 2 for fixation. Each steel pipe 3 passing through the upstream cofferdam 1 is fixedly equipped with a gate 7 on the interception-non-construction zone side, and each steel pipe 3 passing through the downstream cofferdam 2 is also fixedly equipped with a gate 7 on the diversion-non-construction zone side.
[0027] The upstream cofferdam 1 is formed by stacking multiple upstream soil bags 11, and the downstream cofferdam 2 is formed by stacking multiple downstream soil bags 21. Water-stop rubber tape or sealing tape is used to seal the upstream soil bags 11 and downstream soil bags 21 to prevent leakage. Both the upstream soil bags 11 and downstream soil bags 21 are composed of clay with low permeability and high-strength polypropylene woven bags with lifting lugs. Clay is filled inside the woven bags to form the upstream soil bags 11 and downstream soil bags 21. When the multiple upstream soil bags 11 forming the upstream cofferdam 1 are stacked, the staggered joint length is greater than or equal to 1 / 3 of the bag length, and the compaction degree of each layer is greater than or equal to 90%. When the multiple downstream soil bags 21 forming the downstream cofferdam 2 are stacked, the staggered joint length is greater than or equal to 1 / 3 of the bag length, and the compaction degree of each layer is greater than or equal to 90%. The foundation thickness of the upstream cofferdam 1 and downstream cofferdam 2 is 30-50 cm, the width is 30-50 cm larger than the total diameter of all steel pipes 3, and the height is the same as the depth of the construction channel 6.
[0028] like Figure 3As shown, the gate 7 includes a bracket 71, a handwheel 72, a screw 73, a gate plate 74, a first movable groove 75, and a second movable groove 76. The bracket 71 is welded to the end of the steel pipe 3 using E4303 electrode arc welding in three layers to ensure a seal between the bracket 71 and the end of the steel pipe 3. The bracket 71 has a first movable groove 75 and a second movable groove 76, with the first movable groove 75 located above the second movable groove 76. The gate plate 74 is slidably connected inside the bracket 71, and a screw 73 passes through the gate plate 74. The upper end of the screw 73 passes through the upper end of the bracket 71 and is fixedly connected to the handwheel 72. The lower end of the screw 73 is rotatably connected to the bottom of the second movable groove 76. The gate plate 74 is threadedly connected to the screw 73. The side wall of the gate plate 74 and the inside of the bracket 71 are provided with sliding limiters. Rotating the handwheel 72 causes the gate plate 74 to move up and down. When the gate plate 74 is completely located in the second movable groove 76, the steel pipe 3 is in a closed state; otherwise, the gate plate 74 is in a conducting state.
[0029] like Figure 2 As shown, the clamp 4 includes two semi-ring parts 41 and a bolt 42. One end of the two semi-ring parts 41 is hinged and the other end is detachably connected by the bolt 42. A rubber sealing ring is also provided at the connection between the hose 5 and the steel pipe 3 to achieve sealing.
[0030] Hose 5 is a pressure-bearing flow guiding hose to achieve water flow, and it has the characteristics of easy disassembly and assembly and high turnover rate.
[0031] The working principle of a temporary water supply structure for the renovation of an in-service canal provided by this utility model is as follows:
[0032] S1. Construct an upstream cofferdam 1 upstream of the construction channel 6. Stack upstream soil bags 11 layer by layer from the bottom of the construction channel 6. When the stacking reaches the construction position of the steel pipe 3, install the steel pipe 3. Then continue to stack the upstream soil bags 11. When the upstream soil bags 11 are stacked to the top of the construction channel 6, stop stacking and use water-stop rubber tape or sealing tape to seal the spaces between the upstream soil bags 11 and between the upstream soil bags 11 and the steel pipe 3.
[0033] S2. Construct a downstream cofferdam 2 downstream of the construction channel 6. Stack downstream soil bags 21 layer by layer from the bottom of the construction channel 6. When the stacking reaches the construction position of the steel pipe 3, install the steel pipe 3. Then continue to stack downstream soil bags 21. When the downstream soil bags 21 are stacked to the top of the construction channel 6, stop stacking and use water-stop rubber tape or sealing tape to seal the spaces between the downstream soil bags 21 and between the downstream soil bags 21 and the steel pipe 3.
[0034] S3. Install a flexible hose 5 between the corresponding steel pipes 3 of the upstream cofferdam 1 and the downstream cofferdam 2. Place one end of the flexible hose 5 on the end of the steel pipe 3 that passes through the upstream cofferdam 1 and the other end on the end of the steel pipe 3 that passes through the downstream cofferdam 2. Then use clamps 4 to fix both ends of the flexible hose 5 to the corresponding steel pipes 3 to prevent water from flowing out from the connection.
[0035] S4. Weld gate 7 to the side of each steel pipe 3 that runs through the upstream cofferdam 1 near the interception-non-construction zone, and weld gate 7 to the side of each steel pipe 3 that runs through the downstream cofferdam 2 located in the diversion-non-construction zone.
[0036] This utility model employs earthen bag cofferdams at both the upstream and downstream of the construction channel 6 to intercept the flow, creating dry construction conditions. Steel pipes 3 are installed in both the upstream cofferdam 1 and the downstream cofferdam 2. The steel pipes 3 installed in the upstream cofferdam 1 and the corresponding steel pipes 3 installed in the downstream cofferdam 2 are connected by flexible hoses 5 to guide the flow through the cofferdams and dynamically divert the flow, ensuring normal water flow during the channel renovation. This constructs a "interception-guidance-diversion" construction system for the renovation of in-service channels, achieving the creation of dry construction conditions while ensuring normal water flow in the channel.
[0037] This utility model is formed by welding steel pipe 3 and gate 7. The hose 5 is detachably connected to steel pipe 3. Both upstream soil bag 11 and downstream soil bag 21 are equipped with lifting lugs, and the upstream soil bag 11 and downstream soil bag 21 are connected by tape. This achieves sealing while facilitating disassembly and minimizing damage to the soil bags. During the construction of upstream cofferdam 1 and downstream cofferdam 2, the upstream soil bag 11 and downstream soil bag 21 can be quickly stacked by using a crane on the lifting lugs. This allows for easy disassembly and rapid installation, and also results in a high turnover rate and high reuse rate.
[0038] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A temporary water-carrying structure for the renovation of an in-service canal, characterized in that, The system includes an upstream cofferdam, a downstream cofferdam, steel pipes, flexible hoses, clamps, and gates. The upstream cofferdam is located upstream of the construction channel, and the downstream cofferdam is located downstream of the construction channel. The steel pipes are installed inside the upstream cofferdam and the downstream cofferdam. Flexible hoses are fitted between the steel pipes in the upstream cofferdam and the corresponding steel pipes in the downstream cofferdam. Clamps are installed at the connection between the steel pipes and the flexible hoses. Gates are fixedly connected to the side of the steel pipes in the upstream cofferdam away from the construction channel and the side of the steel pipes in the downstream cofferdam away from the construction channel.
2. The temporary water supply structure for the renovation of an in-service canal according to claim 1, characterized in that, The upstream cofferdam is composed of multiple stacked upstream soil bags, and the upstream soil bags and the upstream soil bags are sealed with water-stop rubber tape or sealing tape.
3. A temporary water supply structure for the renovation of an in-service canal according to claim 2, characterized in that, The downstream cofferdam is composed of multiple downstream soil bags stacked together, and the downstream soil bags and the downstream soil bags are sealed with water-stop rubber tape or sealing tape.
4. A temporary water supply structure for the renovation of an in-service canal according to claim 3, characterized in that, The staggered length of the upstream and downstream soil bags when stacked is greater than or equal to 1 / 3 of the bag length.
5. A temporary water supply structure for the renovation of an in-service canal according to claim 3, characterized in that, Both the upstream and downstream soil bags are composed of woven bags with hanging lugs and clay, with the clay placed inside the woven bags.
6. A temporary water supply structure for the renovation of an in-service canal according to claim 1, characterized in that, The gate includes a bracket, a handwheel, a screw, and a gate plate. The bracket is fixed to the end of the steel pipe. The screw passes through the bracket and is fixedly connected to the handwheel at the upper end of the bracket. The lower end of the screw is rotatably connected to the bottom of the bracket. The screw passes through the gate plate and is threadedly connected to the gate plate. The gate plate is slidably connected inside the bracket.
7. A temporary water supply structure for the renovation of an in-service canal according to claim 6, characterized in that, The bracket is provided with a first movable groove and a second movable groove. When the gate is completely located in the second movable groove, the steel pipe is in a closed state; otherwise, the steel pipe is in a conductive state.
8. A temporary water supply structure for the renovation of an in-service canal according to claim 6, characterized in that, The bracket and the steel pipe are fixedly connected by arc welding.
9. A temporary water supply structure for the renovation of an in-service canal according to claim 1, characterized in that, The clamp includes two semi-rings and a bolt. One end of the two semi-rings is hinged and the other end is detachably connected by the bolt.
10. A temporary water supply structure for the renovation of an in-service canal according to claim 1, characterized in that, A sealing ring is fitted between the connection between the hose and the steel pipe.