Thick covering layer upper gate dam foundation treatment structure

Abstract

The utility model provides a deep covering layer upper gate dam foundation treatment structure, and relates to the technical field of deep covering layer upper gate dam foundation treatment structures, the deep covering layer upper gate dam foundation treatment structure comprises a ground plane, a gate dam is arranged at the upper top of the ground plane, a concrete slab is arranged at the bottom of the gate dam, and the concrete slab is arranged below the ground plane. A gravel layer is arranged at the bottom of the concrete slab, a lower overburden layer is arranged below the gravel layer, a positioning device is arranged at the position of the gravel layer, a fixing rod is fixedly connected to the bottom of the gate dam, a buffering device is arranged on the side face of the gate dam, and the positioning device comprises a hollow rod inserted into the gravel layer. The fixing rod is inserted into the hollow rod, one end of the hollow rod is sleeved with a cover, the inner wall of the cover is fixedly connected with a clamping ring, a clamping rod is inserted into the side face of the cover, and the problem that a gate dam cannot be positioned when gravel blocks are backfilled in construction is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a dam foundation treatment structure on a thick overburden layer, in particular to a dam foundation treatment structure on a thick overburden layer. Background Art

[0002] During the construction of water conservancy and hydropower projects, some projects will involve the situation where the foundation of the dam is located on a deep overburden. The common riverbed overburden material composition usually includes: gravel layer, sand layer, clay layer, silt layer, crushed stone layer, block stone layer and various mixed structures, etc. The thickness of the overburden can be more than 100m, and silt sand, silt soil, gravel and other soil layers may be subject to earthquake liquefaction. At present, there are many common foundation treatment methods in water conservancy and hydropower projects. According to different treatment requirements, the selected treatment method is also different. At the same time, the basic function and scope of use of each method are also different. At present, the main methods for overburden foundation treatment are: full excavation method, dynamic tamping method, vibro-impact crushed stone pile method, high-pressure rotary jet pile method, cement mixing pile method, grouting method, cushion method, etc.

[0003] The inventor discovered during daily use of the dam foundation treatment structure on a deep covering layer that, during the construction of the dam, the original covering soil needs to be dug up before filling with gravel blocks. However, the gravel blocks cannot be filled along a predetermined trajectory, which makes it impossible to position them. After filling, they need to be positioned again before the dam can be installed, which causes an impact. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a dam foundation treatment structure on a thick overburden layer.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a foundation treatment structure of a dam on a deep covering layer, including a ground plane, a dam is arranged on the upper top of the ground plane, a concrete slab is arranged at the bottom of the dam, the concrete slab is arranged below the ground plane, a gravel layer is arranged at the bottom of the concrete slab, a lower covering soil layer is arranged below the gravel layer, a positioning device is arranged at the position of the gravel layer, a fixing rod is fixedly connected to the bottom of the dam, a buffer device is arranged on the side of the dam, the positioning device includes a hollow rod inserted in the gravel layer, and the fixing rod is inserted into the interior of the hollow rod.

[0006] The effect achieved by the above components is: under the action of the hollow rod and the fixed rod, the dam can be positioned when the test tube is installed, thereby achieving the positioning effect. When the dam needs to be constructed, dig down at the ground level. After digging to the lower covering soil layer, fill the gravel back on the upper part of the lower covering soil layer. When filling the gravel, fix the positioning device on the upper part of the lower covering soil layer. After backfilling, cover the surface of the gravel layer with a concrete slab, and then fix the dam construction on the surface of the concrete slab, thereby completing the construction of the dam.

[0007] Preferably, one end of the hollow rod is sleeved with a cover, and the inner wall of the cover is fixedly connected with a clamping ring.

[0008] The effects achieved by the above components are: under the action of the cover, gravel will not enter the interior of the hollow rod, thereby not affecting the insertion of the fixing rod into the interior of the hollow rod, and under the action of the clamping ring, the cover can be initially clamped on the surface of the hollow rod.

[0009] Preferably, a clamping rod is inserted into the side of the cover, a first spring is sleeved on the surface of the clamping rod, and two ends of the first spring are respectively fixedly connected to the surface of the cover and an end of the clamping rod away from the cover.

[0010] The effect achieved by the above components is that under the action of the first spring, the clamping rod is inserted into the interior of the hollow rod in a self-locking manner, thereby achieving the effect of fixing the cover.

[0011] Preferably, a cushion block is fixedly connected to the upper top of the hollow rod, and the cushion block is a rubber cushion.

[0012] The effects achieved by the above components are as follows: under the action of the pad, the cover will not directly contact the hollow rod after being hit by gravel, thus avoiding the phenomenon of rigid contact. When it is necessary to position the dam, the hollow rod is inserted and fixed inside the gravel layer, and the cover is covered on the surface of the hollow rod. Under the action of the first spring, the clamping rod is inserted into the interior of the hollow rod in a self-locking manner, thereby achieving the effect of fixing the cover, filling in gravel, and under the action of the pad, the cover will not directly contact the hollow rod after being hit by gravel. After filling, the cover is removed, and the fixing rod is inserted into the interior of the hollow rod for positioning, thereby achieving the effect of positioning.

[0013] Preferably, the buffer device comprises a buffer block arranged on the side of the dam, and the buffer block is a triangular block.

[0014] The effect achieved by the above components is that under the action of the buffer block, the water flow can be buffered when it impacts the dam, avoiding the phenomenon of the water flow directly hitting the dam and extending the service life of the dam.

[0015] Preferably, a telescopic rod is fixedly connected to the side of the dam, a second spring is sleeved on the surface of the telescopic rod, and a buffer block is fixedly connected to the other end of the second spring and the telescopic rod.

[0016] The effect achieved by the above components is that under the action of the telescopic rod and the second spring, the buffer block can buffer when impacted, thereby avoiding the phenomenon of water flow directly hitting the dam.

[0017] Preferably, a triangular strip is fixedly connected to the side surface of the dam, and the triangular strip is a rubber strip.

[0018] The effect achieved by the above components is that under the action of the triangular bars, the water flow dispersed by the buffer blocks can be buffered and dispersed by the triangular bars again, thereby achieving the buffering effect.

[0019] Preferably, a side surface of the dam is provided with an annular groove, and the annular groove is arranged between the triangular bars.

[0020] The effects achieved by the above components are as follows: under the action of the annular groove, the water flow can be buffered by the annular groove when impacting the dam; when the water flow hits the dam, under the action of the telescopic rod and the second spring, the buffer block can buffer when impacted, thereby avoiding the phenomenon of the water flow directly hitting the dam; under the action of the triangular bar, the water flow dispersed by the buffer block can be buffered and dispersed by the triangular bar again, thereby achieving the buffering effect; under the action of the annular groove, the water flow can be buffered by the annular groove when impacting the dam, thereby achieving the buffering effect.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by arranging the positioning device, when it is necessary to position the gate dam, the hollow rod is inserted and fixed inside the gravel layer, and the cover is covered on the surface of the hollow rod. Under the action of the first spring, the clamping rod is inserted into the inside of the hollow rod in a self-locking manner, thereby achieving the effect of fixing the cover, filling in gravel, and under the action of the cushion block, the cover will not directly contact the hollow rod after being hit by the gravel. After filling, the cover is removed, and the fixing rod is inserted into the inside of the hollow rod for positioning, thereby achieving the effect of positioning, thereby solving the problem that the gate dam cannot be positioned when backfilling gravel blocks during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional structural schematic diagram of a dam foundation treatment structure on a thick overburden layer is proposed for the utility model;

[0024] Figure 2 A schematic diagram of a three-dimensional structure of a dam foundation treatment structure on a thick overburden layer is provided for the utility model;

[0025] Figure 3 A partial schematic diagram of a positioning device for a dam foundation treatment structure on a thick overburden layer proposed by the utility model;

[0026] Figure 4 The utility model provides a schematic diagram of a buffer device for a dam foundation treatment structure on a thick overburden layer.

[0027] Legend: 1. Dam; 2. Positioning device; 21. Hollow rod; 22. Cover; 23. Snap ring; 24. Pad; 25. Clamp rod; 26. First spring; 3. Buffer device; 31. Buffer block; 32. Second spring; 33. Telescopic rod; 34. Triangular bar; 35. Annular groove; 4. Ground plane; 5. Concrete slab; 6. Gravel layer; 7. Lower covering soil layer. DETAILED DESCRIPTION

[0028] Embodiment 1, as Figure 1-2 As shown, a foundation treatment structure of a gate dam 1 on a deep covering layer comprises a ground plane 4, a gate dam 1 is arranged on the upper top of the ground plane 4, a concrete slab 5 is arranged at the bottom of the gate dam 1, the concrete slab 5 is arranged below the ground plane 4, a gravel layer 6 is arranged at the bottom of the concrete slab 5, a lower covering soil layer 7 is arranged below the gravel layer 6, a positioning device 2 is arranged at the position of the gravel layer 6, a fixing rod is fixedly connected to the bottom of the gate dam 1, and a buffer device 3 is arranged on the side of the gate dam 1. When it is necessary to construct the gate dam 1, dig down at the position of the ground plane 4, and when the lower covering soil layer 7 is dug, the gravel is backfilled above the lower covering soil layer 7. When filling the gravel, the positioning device 2 is fixed above the lower covering soil layer 7. After backfilling, the concrete slab 5 is covered on the surface of the gravel layer 6, and then the gate dam 1 is constructed and fixed on the surface of the concrete slab 5, and then the construction of the gate dam 1 is completed.

[0029] Reference Figure 3The positioning device 2 includes a hollow rod 21 inserted into the gravel layer 6, and the fixing rod is inserted into the hollow rod 21. Under the action of the hollow rod 21 and the fixing rod, the gate dam 1 can be positioned when the test tube is installed, thereby achieving the positioning effect. When the gate dam 1 needs to be constructed, dig down at the position of the ground plane 4. After digging to the lower covering soil layer 7, the gravel is backfilled above the lower covering soil layer 7. When filling the gravel, the positioning device 2 is fixed above the lower covering soil layer 7. After backfilling, the concrete slab 5 is covered on the surface of the gravel layer 6, thereby achieving the positioning effect. The dam 1 is constructed and fixed on the surface of the concrete slab 5, and the construction of the dam 1 is completed. A cover 22 is sleeved on one end of the hollow rod 21, and a clamping ring 23 is fixedly connected to the inner wall of the cover 22. Under the action of the cover 22, gravel will not enter the interior of the hollow rod 21, so as not to affect the insertion of the fixing rod into the interior of the hollow rod 21. Under the action of the clamping ring 23, the cover 22 can be initially clamped on the surface of the hollow rod 21. A clamping rod 25 is inserted into the side of the cover 22, and a first spring 26 is sleeved on the surface of the clamping rod 25. The first spring 26 is The two ends of the spring 26 are respectively fixedly connected to the surface of the cover 22 and the end of the clamping rod 25 away from the cover 22. Under the action of the first spring 26, the clamping rod 25 is inserted into the interior of the hollow rod 21 in a self-locking manner, thereby achieving the function of fixing the cover 22. The upper top of the hollow rod 21 is fixedly connected with a cushion block 24, which is a rubber cushion. Under the action of the cushion block 24, the cover 22 will not directly contact the hollow rod 21 after being hit by gravel, thereby avoiding the phenomenon of rigid contact. When it is necessary to position the gate dam 1 When the hollow rod 21 is inserted and fixed inside the gravel layer 6, the cover 22 is covered on the surface of the hollow rod 21. Under the action of the first spring 26, the clamping rod 25 is inserted into the interior of the hollow rod 21 in a self-locking manner, thereby achieving the effect of fixing the cover 22. Gravel is filled in. Under the action of the pad 24, the cover 22 will not directly contact the hollow rod 21 after being hit by the gravel. After filling, the cover 22 is removed, and the fixing rod is inserted into the interior of the hollow rod 21 for positioning, thereby achieving the effect of positioning.

[0030] Reference Figure 4The buffer device 3 includes a buffer block 31 arranged on the side of the dam 1. The buffer block 31 is a triangular block. Under the action of the buffer block 31, the water flow can be buffered when it impacts the dam 1, avoiding the phenomenon of the water flow directly impacting the dam 1, and extending the service life of the dam 1. A telescopic rod 33 is fixedly connected to the side of the dam 1. The surface of the telescopic rod 33 is sleeved with a second spring 32. The second spring 32 and the other end of the telescopic rod 33 are fixedly connected with a buffer block 31. Under the action of the telescopic rod 33 and the second spring 32, the buffer block 31 can be buffered when it is impacted, thereby avoiding the phenomenon of the water flow directly impacting the dam 1. A triangular strip 34 is fixedly connected to the side of the dam 1. The triangular strip 34 is a rubber strip. Under the action of the triangular strip 34, the buffer block 31 The dispersed water flow can be buffered and dispersed by the triangular bar 34 again, thereby achieving a buffering effect. An annular groove 35 is opened on the side of the dam 1, and the annular groove 35 is arranged between the triangular bars 34. Under the action of the annular groove 35, the water flow can be buffered by the annular groove 35 when impacting the dam 1. When the water flow hits the dam 1, under the action of the telescopic rod 33 and the second spring 32, the buffer block 31 can be buffered when impacted, thereby avoiding the phenomenon that the water flow directly hits the dam 1. Under the action of the triangular bar 34, the water flow dispersed by the buffer block 31 can be buffered and dispersed by the triangular bar 34 again, thereby achieving a buffering effect. Under the action of the annular groove 35, the water flow can be buffered by the annular groove 35 when impacting the dam 1, thereby achieving a buffering effect.

[0031] Working principle, when it is necessary to use the foundation treatment structure of the gate dam 1 on a deep covering layer, when it is necessary to construct the gate dam 1, dig down at the position of the ground plane 4, and when the lower covering soil layer 7 is dug, the gravel is backfilled to the top of the lower covering soil layer 7, and the positioning device 2 is fixed on the top of the lower covering soil layer 7 when filling the gravel. After backfilling, the concrete slab 5 is covered on the surface of the gravel layer 6, and then the gate dam 1 is constructed and fixed on the surface of the concrete slab 5, and then the construction of the gate dam 1 is completed. When it is necessary to position the gate dam 1, the hollow rod 21 is inserted and fixed inside the gravel layer 6, and the cover 22 is covered on the surface of the hollow rod 21. Under the action of the first spring 26, the clamping rod 25 is inserted into the inside of the hollow rod 21 in a self-locking manner, thereby achieving the effect of fixing the cover 22, and filling. Gravel is put into the cover 22. Under the action of the cushion block 24, the cover 22 will not directly contact the hollow rod 21 after being hit by the gravel. After filling, the cover 22 is removed and the fixing rod is inserted into the hollow rod 21 for positioning, thereby achieving the positioning effect. When the water flow hits the dam 1, under the action of the telescopic rod 33 and the second spring 32, the buffer block 31 can buffer when it is impacted, thereby avoiding the phenomenon that the water flow directly hits the dam 1. Under the action of the triangular bar 34, the water flow dispersed by the buffer block 31 can be buffered and dispersed by the triangular bar 34 again, thereby achieving the buffering effect. Under the action of the annular groove 35, the water flow can be buffered by the annular groove 35 when impacting the dam 1, thereby achieving the buffering effect.

Claims

1. A dam foundation treatment structure on a thick overburden layer, comprising a ground plane (4), a dam (1) being arranged on the top of the ground plane (4), characterized in that: A concrete slab (5) is provided at the bottom of the dam (1), the concrete slab (5) is provided below the ground plane (4), a gravel layer (6) is provided at the bottom of the concrete slab (5), a lower covering soil layer (7) is provided below the gravel layer (6), a positioning device (2) is provided at the position of the gravel layer (6), a fixing rod is fixedly connected to the bottom of the dam (1), a buffer device (3) is provided on the side of the dam (1), and the positioning device (2) comprises a hollow rod (21) inserted into the gravel layer (6), and the fixing rod is inserted into the inside of the hollow rod (21).

2. The dam foundation treatment structure on a thick overburden layer according to claim 1 is characterized by: One end of the hollow rod (21) is sleeved with a cover (22), and the inner wall of the cover (22) is fixedly connected with a clamping ring (23).

3. The dam foundation treatment structure on a thick overburden layer according to claim 2 is characterized by: A clamping rod (25) is inserted into the side of the cover (22), and a first spring (26) is sleeved on the surface of the clamping rod (25). Two ends of the first spring (26) are respectively fixedly connected to the surface of the cover (22) and one end of the clamping rod (25) away from the cover (22).

4. The dam foundation treatment structure on a thick overburden layer according to claim 3 is characterized by: A cushion block (24) is fixedly connected to the upper top of the hollow rod (21), and the cushion block (24) is a rubber cushion.

5. The dam foundation treatment structure on a thick overburden layer according to claim 4 is characterized by: The buffer device (3) comprises a buffer block (31) arranged on the side of the dam (1), and the buffer block (31) is a triangular block.

6. The dam foundation treatment structure on a thick overburden layer according to claim 5, characterized in that: A telescopic rod (33) is fixedly connected to the side of the dam (1), a second spring (32) is sleeved on the surface of the telescopic rod (33), and a buffer block (31) is fixedly connected between the second spring (32) and the other end of the telescopic rod (33).

7. The dam foundation treatment structure on a thick overburden layer according to claim 6, characterized in that: A triangular strip (34) is fixedly connected to the side surface of the dam (1), and the triangular strip (34) is a rubber strip.

8. The dam foundation treatment structure on a thick overburden layer according to claim 7, characterized in that: The side surface of the dam (1) is provided with an annular groove (35), and the annular groove (35) is arranged between the triangular bars (34).

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