Dam abutment core wall construction intercepting ditch structure

Abstract

The utility model discloses an intercepting ditch structure for dam abutment core wall construction, and relates to the technical field of dam filling and concrete face dam abutment construction, in particular to a drainage structure for dam abutment core wall construction. A water stopping box is installed on the side wall of a core wall cover plate and comprises an inclined plate, an L-shaped plate and a water blocking ridge, the L-shaped plate comprises a bottom plate and a side wall, the bottom plate is connected with the bottom end of the inclined plate, the water blocking ridge is located between the side wall at the two ends of a water stopping box body and the inclined plate, and a hole is formed in the bottom plate for installing a water drainage pipe; the inclined plate is installed at the upper end of the side wall of the core wall cover plate, and the bottom plate is supported on the side wall of the core wall cover plate through the joint bars. The dam abutment core wall cover plate has the advantages that the multiple intercepting ditches are formed in the dam abutment core wall cover plate, construction waste water can be effectively intercepted, off-site rainwater is prevented from flowing into all concrete construction working faces, core wall clay dry land construction is guaranteed, and the dam filling construction quality is guaranteed.

Description

Technical Field

[0001] The invention discloses a drainage ditch structure for the construction of a dam abutment core wall, which relates to the technical fields of dam filling and concrete panel dam abutment construction, and more specifically to a drainage structure for the construction of a dam abutment core wall. Background Art

[0002] In the dam body filling area, when the core wall cover and core wall filling are carried out in parallel, concrete construction water, rainwater and other construction wastewater will flow into the core wall filling area, thereby damaging the quality of the project filling. Utility Model Content

[0003] The problem to be solved by the utility model is to provide a dam shoulder core wall construction intercepting ditch structure to address the above shortcomings, which can collect construction wastewater, ensure dry construction of the core wall clay, and ensure the quality of dam filling construction. Its technical solution is as follows:

[0004] A water intercepting ditch structure for the construction of a dam shoulder core wall, the key technology of which is to install a water intercepting box on the side wall of the core wall cover plate, the water intercepting box comprising an inclined plate, an L-shaped plate and a water retaining sill, the L-shaped plate comprising a bottom plate and a side wall, the bottom plate being connected to the bottom end of the inclined plate, the water retaining sill being located between the side wall and the inclined plate at both ends of the water intercepting box body, a hole being opened on the bottom plate to install a drainage pipe; the inclined plate is installed at the upper end of the side wall of the core wall cover plate, and the bottom plate is supported on the side wall of the core wall cover plate by dowel bars.

[0005] The top of the inclined plate is bent upward, and a sealing block is arranged above the inclined plate.

[0006] One to two first reinforcing ribs are respectively installed on the side wall and the bottom plate of the L-shaped plate.

[0007] The water retaining sill is built with bricks, and mortar is applied after the completion of the construction. The front end of the water retaining sill is fitted with the side wall of the inclined plate. The height of the water retaining sill is greater than or equal to the height of the L-shaped plate. The water retaining sill prevents water from flowing to the outside of the intercepting ditch.

[0008] The dowel bars are distributed at equal intervals along the long side direction of the L-shaped plate.

[0009] The inclined plate is provided with a hole, and the hole is installed on the side wall of the core wall cover plate through expansion bolts.

[0010] A drilling hole is provided at the lower end of the side wall of the core wall cover plate, the top end of the dowel supports the bottom plate of the L-shaped plate, and the lower end of the dowel is inserted into the drilling hole.

[0011] The bottom plate of the L-shaped plate is inclined along the length direction of the core wall cover plate, a hole is opened on the bottom plate to install a drainage pipe, and the other end of the drainage pipe is connected to the sump.

[0012] Another fixed structure of the water cut-off box includes inner tie rods, L-shaped reinforcements and diagonal tie rods. The inner tie rods include upper inner tie rods and lower inner tie rods. The upper inner tie rods are located above the sealing block, and the lower inner tie rods are located below the L-shaped plate. One end of the inner tie rod is anchored in the core wall cover plate, the L-shaped reinforcement is installed on the outer wall of the L-shaped plate, one end of the diagonal tie rod is connected to one end of the L-shaped reinforcement, and the other end of the diagonal tie rod is connected to the upper inner tie rod.

[0013] A second reinforcing rib is fixed on the L-shaped rib, wherein the second reinforcing rib close to the lower row inner tie rod is fixed to the lower row inner tie rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Multiple intercepting ditches are set at the core wall cover of the dam shoulder to effectively intercept construction wastewater to prevent off-site rainwater from flowing into the concrete construction working surfaces, ensure dry land construction of the core wall clay, and ensure the quality of dam filling construction.

[0016] 2. The top of the drainage pipe is connected to the bottom of the intercepting tank, and the other end of the drainage pipe is connected to the sump. The water collected in the intercepting tank flows into the sump through the drainage pipe. The wastewater in the sump is recycled on the construction site after sedimentation and meets the standards. It can be used as construction waste cleaning water, mechanical flushing water, pump pipe cleaning water, formwork cleaning water, concrete curing water, etc. The water that does not meet the standards after sedimentation is discharged outside the site through the drainage system on the construction site, which is conducive to saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is another structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] Embodiment 1:

[0020] like Figure 1 As shown, a water cut-off ditch structure for the construction of a dam shoulder core wall, the key technology of which is to install a water cut-off box on the side wall of the core wall cover plate 1, the water cut-off box includes an inclined plate 2, an L-shaped plate 4 and a water retaining sill 5, the L-shaped plate 4 includes a bottom plate 4.2 and a side wall 4.1, the bottom plate 4.2 is connected to the bottom end of the inclined plate 2, the water retaining sill 5 is two pieces, which are respectively located between the side walls 4.1 and the inclined plate 2 at both ends of the water cut-off box body, the height of the water retaining sill 5 is greater than or equal to the height of the L-shaped plate 4, and a hole is opened on the bottom plate 4.2 to install a drainage pipe 6; the box body inclined plate 2 is installed on the upper end of the side wall of the core wall cover plate 1, and the box body bottom plate 4.2 is supported on the side wall of the core wall cover plate 1 by dowels 10.

[0021] The top of the inclined plate 2 is bent upward to prevent water from leaking and guide water flow.

[0022] A sealing block 7 is provided above the inclined plate 2. When the inclined plate 2 is installed, there will be some gaps between the bottom surface of the inclined plate 2 and the core wall cover plate 1. In order to prevent water from entering the gaps, the top of the inclined plate 2 is sealed by applying the sealing block 7. The material of the sealing block 7 is clay or M10 mortar. When applying the sealing block 7, the surface of the sealing block 7 is applied as an inclined surface. After the sealing block 7 solidifies, it can be used for waterproofing and guiding water flow. When water flows down from the top of the core wall cover plate 1, the water flows from the sealing block 7 into the inclined plate 2, and then enters the water interception box.

[0023] In order to ensure the strength and rigidity of the L-shaped plate 4 without increasing the wall thickness of the L-shaped plate 4, 1 to 2 first reinforcing ribs 8 are respectively installed on the side wall 4.1 and the bottom plate 4.2 of the L-shaped plate 4, which can effectively prevent the L-shaped plate 4 from deforming and save costs. The first reinforcing ribs 8 extend along the long side direction of the L-shaped plate 4, and the first reinforcing ribs 8 are ribbed steel bars with a diameter of 16 mm.

[0024] The water retaining sill 5 is built with bricks, and mortar is applied after the building is completed. The front end of the water retaining sill 5 is in contact with the side wall of the inclined plate 2. The height of the water retaining sill 5 is greater than or equal to the height of the L-shaped plate 4. The water retaining sill 5 prevents water from flowing to the outside of the intercepting ditch.

[0025] The dowel bars 10 are distributed at equal intervals along the long side direction of the L-shaped plate 4 .

[0026] The inclined plate 2 has a hole, and is installed on the side wall of the core wall cover plate 1 through an expansion bolt 3 in the hole.

[0027] A drill hole 9 is provided at the lower end of the side wall of the core wall cover plate 1, and the top end of the dowel rod 10 supports the bottom plate 4.2 of the L-shaped plate 4. The lower end of the dowel rod 10 is inserted into the drill hole 9 to ensure the supporting force of the dowel rod 10 on the L-shaped plate 4. The depth of the drill hole 9 is 70 cm. The dowel rod 10 adopts a steel bar with a diameter of 20 mm. The distance between adjacent drill holes 9 is 1.5 m. The dowel rod 10 can be rotated. When the intercepting ditch is removed, the dowel rod 10 can be pulled out of the drill hole 9.

[0028] The bottom plate 4.2 of the L-shaped plate 4 is inclined along the length direction of the core wall cover plate 1, and the longitudinal slope ratio of the L-shaped plate 4 is 1%. The water flowing into the L-shaped plate 4 flows along the direction of the slope. A hole is opened at a lower elevation position on the bottom plate 4.2 to install a drain pipe 6. The drain pipe 6 adopts a steel pipe with a diameter of 50 mm. The top of the drain pipe 6 is connected to the bottom plate 4.2, and the top of the drain pipe 6 is welded to the bottom plate 4.2. The other end of the drain pipe 6 is connected to the sump. The water collected by the interception tank flows into the sump through the drain pipe 6. The wastewater in the sump is recycled in the construction site after being precipitated to meet the standards. It can be used as construction waste cleaning water, mechanical flushing water, tank truck cleaning water, template cleaning water, concrete curing water, etc. The water that does not meet the standards after precipitation is discharged out of the site through the drainage system in the construction site.

[0029] The inclined plate 2 and the L-shaped plate 4 are made of metal plates, such as iron sheets, steel plates, etc.

[0030] Embodiment 2:

[0031] like Figure 2 As shown, the other structures of this embodiment are the same as those of the first embodiment, and the difference lies in the fixing structure of the water cut-off box.

[0032] In this embodiment, the fixed structure includes an inner tie rod, an L-shaped rib 12 and an inclined tie rod 14. The inner tie rod includes an upper row of inner tie rods 11 and a lower row of inner tie rods 11.1. The upper row of inner tie rods 11 is located above the sealing block 7, and the lower row of inner tie rods 11.1 is located below the L-shaped plate 4. One end of the inner tie rod is anchored in the core wall cover plate 1. The L-shaped rib 12 is welded and installed on the outer wall of the L-shaped plate 4 using a steel bar with a diameter of 12 mm in accordance with the L-shape of the L-shaped plate 4. One end of the inclined tie rod 14 is connected to one end of the L-shaped rib 12, and the other end of the inclined tie rod 14 is connected to the upper row of inner tie rods 11. The inclined tie rod 14 is made of round steel with a diameter of 8 mm. The inclined tie rod 14 provides upward pulling force for the L-shaped rib 12, and the L-shaped rib 12 supports the L-shaped plate 4.

[0033] A plurality of second reinforcing ribs 13 are welded and fixed on the L-shaped ribs 12 located at the bottom plate 4.2, wherein the second reinforcing ribs 13 near the lower inner tie rods 11.1 are welded and fixed to the lower inner tie rods 11.1. The second reinforcing ribs 13 fix the position of the L-shaped ribs 12, and the lower inner tie rods 11.1 provide support for the L-shaped plate 4. The second reinforcing ribs 13 are made of steel bars with a diameter of 12 mm.

[0034] The inner tie rod, L-shaped reinforcement 12 and oblique tie rod 14 form a group in the vertical direction, and the interval between groups is 1.5 to 1.8 m.

Claims

1. A dam abutment core wall construction cut-off ditch structure, characterized by A water cut-off box is installed on the side wall of the core wall cover plate (1), the water cut-off box comprising an inclined plate (2), an L-shaped plate (4) and a water retaining sill (5), the L-shaped plate (4) comprising a bottom plate (4.2) and a side wall (4.1), the bottom plate (4.2) being connected to the bottom end of the inclined plate (2), the water retaining sill (5) being located between the side wall (4.1) and the inclined plate (2) at both ends of the water cut-off box body, and a hole is opened on the bottom plate (4.2) for installing a drainage pipe (6); the inclined plate (2) is installed on the upper end of the side wall of the core wall cover plate (1), and the bottom plate (4.2) is supported on the side wall of the core wall cover plate (1) by insert bars (10).

2. The cut-off ditch structure for the dam abutment core wall construction according to claim 1 is characterized by: The top of the inclined plate (2) is bent upward.

3. The cut-off ditch structure for the dam abutment core wall construction according to claim 1 is characterized by: A sealing block (7) is provided above the inclined plate (2).

4. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: One to two first reinforcing ribs (8) are respectively installed on the side wall (4.1) and the bottom plate (4.2) of the L-shaped plate (4).

5. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: The water retaining sill (5) is built with bricks, and mortar is applied after the building is completed. The front end of the water retaining sill (5) is in contact with the side wall of the inclined plate (2). The height of the water retaining sill (5) is greater than or equal to the height of the L-shaped plate (4). The water retaining sill (5) prevents water from flowing to the outside of the intercepting ditch.

6. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: The dowel bars (10) are distributed at equal intervals along the long side direction of the L-shaped plate (4).

7. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: A hole is opened on the inclined plate (2), and the hole is installed on the side wall of the core wall cover plate (1) through an expansion bolt (3).

8. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: A drilling hole (9) is provided at the lower end of the side wall of the core wall cover plate (1), the top end of the dowel bar (10) supports the bottom plate (4.2) of the L-shaped plate (4), and the lower end of the dowel bar (10) is inserted into the drilling hole (9).

9. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized by: The bottom plate (4.2) of the L-shaped plate (4) is inclined along the length direction of the core wall cover plate (1), and a hole is opened on the bottom plate (4.2) to install a drainage pipe (6).

10. The cut-off ditch structure for dam abutment core wall construction according to claim 1 is characterized in that Another fixed structure of the water cut-off box comprises an inner tie rod, an L-shaped rib (12) and an inclined tie rod (14), wherein the inner tie rod comprises an upper row inner tie rod (11) and a lower row inner tie rod (11.1), wherein the upper row inner tie rod (11) is located above the sealing block (7), and the lower row inner tie rod (11.1) is located below the L-shaped plate (4), one end of the inner tie rod is anchored in the core wall cover plate (1), the L-shaped rib (12) is installed on the outer wall of the L-shaped plate (4), one end of the inclined tie rod (14) is connected to one end of the L-shaped rib (12), and the other end of the inclined tie rod (14) is connected to the upper row inner tie rod (11), and a second reinforcing rib (13) is fixed on the L-shaped rib (12), wherein the second reinforcing rib (13) close to the lower row inner tie rod (11.1) is fixed to the lower row inner tie rod (11.1).

Images