Construction platform system for constructing hydropower station diaphragm wall in valley

Abstract

The utility model relates to the technical field of engineering related to control and utilization of streams, river channels, coasts or other sea areas, and discloses a construction platform system for constructing a hydropower station diaphragm wall in a valley, which comprises a drilling machine platform and an equipment pipeline area which are sequentially arranged along the upstream direction of a river from a guide groove, the slurry discharging ditch, the temporary road and the slag discarding area are sequentially arranged from the guide groove in the upstream direction of the river. In the utility model, the reinforced concrete beam is used as the groove wall of the guide groove of the diaphragm wall, the grooving operation area and the waste treatment area are separated by using the guide groove as the boundary, and the component needing to bear the load is directly erected on the groove wall of the guide groove, so that the whole operation area is compact and does not interfere with each other, and the dry and wet separation of the material is not influenced with each other; therefore, the extension length of the construction site along the river bank is minimized under the condition that the area for operation of the river bank is narrow, and the situation that the construction efficiency is reduced due to long-distance material transfer is avoided.

Description

Technical Field

[0001] The utility model relates to the engineering technology field related to the control and utilization of streams, rivers, coasts or other sea areas, in particular to a construction platform system used for constructing anti-seepage walls of hydropower stations in valleys. Background Art

[0002] The dam of a hydropower station can block the flow of water in the river and the seepage in the riverbed, but it cannot block the seepage in the permeable strata on both sides of the river. This part of the seepage is interrupted by the anti-seepage wall. The anti-seepage wall is set along the axis of the dam and can be regarded as the extension of the dam in the strata on both sides of the river.

[0003] The construction of the anti-seepage wall requires a deep trench that reaches the rock layer on the river bank and concrete is poured into the trench. This process requires a variety of different types of materials and heavy construction machinery, such as heavy drilling rigs for trenching in the rock layer, mud for wall protection, and water for cooling and flushing. It also involves the transportation and discharge of waste slurry and waste soil and slag. Materials in different phases need to be separated into dry and wet and transported separately, and heavy construction machinery needs a stable construction platform to avoid sinking. These require a large enough area on the construction site to complete the turnover.

[0004] However, hydropower stations are often located in valleys where the river banks are relatively narrow and most areas are very steep, so the width available for construction work is very small. If the site is not properly arranged, the construction site will inevitably extend far along the river bank, requiring materials to be transported over long distances, affecting construction efficiency. Utility Model Content

[0005] The utility model provides a construction platform system for constructing an anti-seepage wall of a hydropower station in a valley.

[0006] The technical problem to be solved is: hydropower stations are often located in valleys, where the river banks are relatively narrow and most areas are very steep, so the width available for construction work is very small. If the site is not properly arranged, the construction site will extend far along the river bank, and materials will need to be transported over long distances, affecting construction efficiency.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: a construction platform system for constructing a hydropower station anti-seepage wall in a valley, which is used for constructing the anti-seepage wall of the hydropower station, wherein the anti-seepage wall is arranged on the left and right banks of the dam along the dam axis, and the top of the anti-seepage wall is provided with a guide groove for the construction of the anti-seepage wall, and the groove wall of the guide groove is a beam guide wall, and the beam guide wall is a reinforced concrete beam arranged parallel to the guide groove, and the construction platform system includes a drilling platform and an equipment pipeline area arranged in sequence from the guide groove along the upstream direction of the river, and a slurry discharge ditch, a temporary road, and a slag disposal area arranged in sequence from the guide groove along the upstream direction of the river;

[0008] The drilling platform is laid along the anti-seepage wall, and one side edge is arranged on the beam guide wall and supported by the beam guide wall;

[0009] The slurry discharge ditch is arranged parallel to the guide groove, and a slurry-residue separation slope for placing the slurry-waste mixture generated during the construction of the anti-seepage wall is arranged between the slurry discharge ditch and the guide groove. The slurry-residue separation slope slopes from the guide groove toward the slurry discharge ditch, and allows the slurry in the slurry-waste mixture to flow into the slurry discharge ditch along the slope. The slurry discharge ditch leads to the waste slurry sedimentation tank.

[0010] The temporary road leads from the slurry discharge ditch to the slag disposal area.

[0011] Furthermore, the slurry drainage ditch is a hardened groove with a concrete wall at least 10 cm thick, and the slurry-slag separation slope is paved with a concrete layer at least 10 cm thick that is integrally formed with the concrete wall of the slurry drainage ditch and the beam guide wall.

[0012] Furthermore, the drilling platform includes sleepers that are perpendicular to the beam guide wall and rest on the beam guide wall, and sleepers that are perpendicular to the sleepers and arranged in the gaps below the sleepers. The sleepers are arranged at intervals along the length direction of the beam guide wall, and drilling guide rails that are perpendicular to the sleepers are laid on the sleepers.

[0013] Furthermore, in the equipment pipeline area, the mud pipe is arranged away from the drilling rig platform.

[0014] Furthermore, the temporary road is a gravel road at least 5 meters wide.

[0015] Furthermore, the construction platform system also includes two sets of mud systems respectively arranged on the left and right banks of the river, the mud system includes a slurry pool and a waste slurry sedimentation pool, and the slurry pool is provided with a mud mixer.

[0016] Compared with the prior art, the construction platform system for constructing the anti-seepage wall of a hydropower station in a valley has the following beneficial effects:

[0017] In the utility model, reinforced concrete beams are used as the groove walls of the guide grooves of the anti-seepage walls, and the guide grooves are used as the dividing line to separate the grooving operation area from the waste processing area. The load-bearing components are directly erected on the groove walls of the guide grooves (that is, the beam-type guide walls). The entire operation area is compact and does not interfere with each other, and it is ensured that the dry and wet materials are separated without affecting each other. Therefore, when the area available for operation on the river bank is narrow, the extension length of the construction site along the river bank is minimized, avoiding the long-distance transportation of materials that leads to reduced construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a construction platform system for constructing an anti-seepage wall of a hydropower station in a valley. The left side of the figure is the downstream of the dam, and the right side is the upstream of the dam.

[0019] In the figure, 1-guide trough, 2-beam guide wall, 3-drilling platform, 4-equipment pipeline area, 5-slurry discharge ditch, 51-slurry-slag separation slope, 6-temporary road, 7-waste disposal area. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, a construction platform system for constructing an anti-seepage wall of a hydropower station in a valley is used for constructing an anti-seepage wall of a hydropower station. The anti-seepage wall is arranged on the left and right banks of the dam along the dam axis. The top of the anti-seepage wall is provided with a guide groove 1 for the construction of the anti-seepage wall. The groove wall of the guide groove 1 is a beam guide wall 2. The beam guide wall 2 is a reinforced concrete beam arranged parallel to the guide groove 1. The construction platform system includes a drilling platform 3 and an equipment pipeline area 4 arranged in sequence from the guide groove 1 along the upstream direction of the river, and a slurry discharge ditch 5, a temporary road 6, and a slag disposal area 7 arranged in sequence from the guide groove 1 along the upstream direction of the river.

[0021] The drilling platform 3 is mainly used for drilling rigs for slotting, and the side of the drilling platform 3 is the layout area of ​​pipelines and electrical equipment required for the drilling rig, that is, the equipment pipeline area 4. The drilling platform 3 and the equipment pipeline area 4 will not come into contact with wastewater and waste mud during work, and remain dry.

[0022] The slurry discharge ditch 5, temporary road 6, and waste slag area 7 are used for operations that require contact with wastewater and waste slurry.

[0023] The drilling platform 3 is laid along the anti-seepage wall, and one side edge is arranged on the beam guide wall 2 and supported by the beam guide wall 2;

[0024] The drilling rig used for slotting here needs to be set on the drilling platform 3. In order to prevent the drilling platform 3 from sinking, the ground below it needs to be leveled and hardened. Here, the drilling platform 3 is directly placed on the beam guide wall 2. The groove wall of the conventional guide groove 1 is a thin wall with an L-shaped cross section, which is stable but has low strength and poor bearing capacity. Here, a large-sized (the beam guide wall 2 in this embodiment is 50 cm wide and 80 cm high) reinforced concrete beam is directly used as the groove wall, and then the drilling platform 3 is placed on it, and then the gap below the drilling platform 3 is filled. It not only saves area (because a part of the drilling platform 3 is located on the beam guide wall 2), but also does not need to level the land and harden the ground.

[0025] The slurry discharge ditch 5 is arranged parallel to the guide groove 1. A slurry-residue separation slope 51 is arranged between the slurry discharge ditch 5 and the guide groove 1 for placing the slurry-residue mixture generated during the construction of the anti-seepage wall. The slurry-residue separation slope 51 slopes down from the guide groove 1 toward the slurry discharge ditch 5, and allows the slurry in the slurry-residue mixture to flow into the slurry discharge ditch 5 along the slope. The slurry discharge ditch 5 leads to the waste slurry sedimentation tank.

[0026] Here, since the anti-seepage wall needs to penetrate the rock layer during the excavation process, the excavated waste includes a mixture of mud and earth and rock slag. If this mixture is discharged directly, the mud in it will flow everywhere and cause pollution. Therefore, it is separated here. The separated mud can be precipitated and reused, and the amount of waste slag is also reduced.

[0027] The temporary road 6 leads from the slurry discharge ditch 5 to the slag disposal area 7. Here, a row of detachable wire filters can be set at the bottom of the slurry-slag separation slope 51 to prevent the waste slag from falling into the slurry discharge ditch 5.

[0028] The slurry discharge ditch 5 is a hardened groove with a concrete wall at least 10 cm thick, and the slurry-residue separation slope 51 is paved with a concrete layer at least 10 cm thick that is integrally formed with the concrete wall of the slurry discharge ditch 5 and the beam guide wall 2 .

[0029] The concrete layer here not only ensures effective separation of the slurry waste mixture, but also needs to be free of damage during friction with the bucket of a loader or an excavator, because when discharging waste, the loader or excavator needs to remove the waste from the concrete layer. Therefore, it needs to be thick and stable enough (by connecting with the beam guide wall 2 and the guide channel 1).

[0030] The drilling platform 3 includes sleepers that are perpendicular to the beam guide wall 2 and rest on the beam guide wall 2, and pads that are perpendicular to the sleepers and arranged in the gaps below the sleepers. The sleepers are arranged at intervals along the length direction of the beam guide wall 2, and drilling guide rails that are perpendicular to the sleepers are laid on the sleepers.

[0031] The drilling machine in this embodiment is very heavy, so it is arranged to move on rails. Concreting is also carried out with the help of the drilling machine.

[0032] In the equipment pipeline area 4 , the mud pipe is arranged far away from the drilling rig platform 3 . The mud pipe is usually dirty, so it needs to be kept away from the drilling rig platform 3 .

[0033] The temporary road 6 is a gravel road of at least 5 meters wide. Here, the temporary road 6 is not only used for discharging waste residue. The concrete used for pouring the cut-off wall is also transferred to the guide channel 1 limit along this road.

[0034] The construction platform system also includes two sets of mud systems respectively arranged on the left and right banks of the river, the mud system includes a slurry pool and a waste slurry sedimentation pool, and the slurry pool is equipped with a mud mixer. Here, the slurry pool and the waste slurry sedimentation pool can be arranged on the side of the temporary road 6.

[0035] The utility model discloses a construction platform system for constructing an anti-seepage wall of a hydropower station in a valley, and a method for using the construction platform system comprises the following steps:

[0036] Step 1: Install the drilling rig on the drilling rig platform 3 and complete the pipeline connection;

[0037] Step 2: A trench for pouring an anti-seepage wall is excavated downward along the guide groove 1, and the excavated slurry and waste residue mixture is discharged onto the slurry-residue separation slope 51, and the slurry flows into the slurry discharge ditch 5. After the waste residue is loaded, it is poured into the waste residue area 7 along the temporary road 6;

[0038] Step 3: Cast the anti-seepage wall.

[0039] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley, used for constructing an anti-seepage wall of a hydropower station, wherein the anti-seepage wall is arranged on the left and right banks of the dam along the dam axis, and the top of the anti-seepage wall is provided with a guide groove (1) for the construction of the anti-seepage wall, characterized in that: The groove wall of the guide groove (1) is a beam-type guide wall (2), and the beam-type guide wall (2) is a reinforced concrete beam arranged parallel to the guide groove (1). The construction platform system comprises a drilling platform (3) and an equipment pipeline area (4) arranged in sequence from the guide groove (1) along the upstream direction of the river, and a slurry discharge ditch (5), a temporary road (6), and a slag disposal area (7) arranged in sequence from the guide groove (1) along the upstream direction of the river. The drilling platform (3) is laid along the anti-seepage wall, and one side edge is arranged on the beam guide wall (2) and supported by the beam guide wall (2); The slurry discharge ditch (5) is arranged parallel to the guide groove (1), and a slurry-residue separation slope (51) is arranged between the slurry discharge ditch (5) and the guide groove (1) for placing a slurry-residue mixture generated during the construction of the anti-seepage wall. The slurry-residue separation slope (51) slopes from the guide groove (1) toward the slurry discharge ditch (5), and allows the slurry in the slurry-residue mixture to flow into the slurry discharge ditch (5) along the slope. The slurry discharge ditch (5) leads to a waste slurry sedimentation tank. The temporary road (6) leads from the slurry discharge ditch (5) to the slag disposal area (7).

2. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley according to claim 1, characterized in that: The slurry drainage ditch (5) is a hardened groove with a concrete wall at least 10 centimeters thick, and the slurry-residue separation slope (51) is paved with a concrete layer at least 10 centimeters thick that is integrally formed with the concrete wall of the slurry drainage ditch (5) and the beam guide wall (2).

3. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley according to claim 1, characterized in that: The drilling platform (3) comprises sleepers perpendicular to the beam guide wall (2) and resting on the beam guide wall (2), and pads perpendicular to the sleepers and arranged in the gap below the sleepers. The sleepers are arranged at intervals along the length direction of the beam guide wall (2), and drilling guide rails perpendicular to the sleepers are laid on the sleepers.

4. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley according to claim 1, characterized in that: In the equipment pipeline area (4), the mud pipe is arranged away from the drilling rig platform (3).

5. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley according to claim 1, characterized in that: The temporary road (6) is a gravel road with a width of at least 5 meters.

6. A construction platform system for constructing an anti-seepage wall of a hydropower station in a valley according to claim 1, characterized in that: The construction platform system also includes two sets of mud systems respectively arranged on the left and right banks of the river. The mud system includes a slurry pool and a waste slurry sedimentation pool. The slurry pool is provided with a mud mixer.

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