Side slope waste slag field structure of water conservancy and hydropower engineering and construction method of side slope waste slag field structure

Abstract

The invention relates to a slope waste slag field structure of water conservancy and hydropower engineering and a construction method of the slope waste slag field structure. The side slope waste slag field structure of the water conservancy and hydropower engineering is arranged on a near-water side slope and is provided with waste slag bodies piled on the side slope; the slag blocking dam structure is arranged at the bottom of the waste slag body on the side slope, and the slag blocking dam structure can separate the waste slag body and the water body on the near-water side slope; the dry stone slope protection body is laid on the waste slag body, and the bottom of the dry stone slope protection body is arranged on the slag blocking dam structure; the slag retaining dam structure is provided with a rock block bottom protection body laid on a side slope, a rock ballast filling body is arranged on the rock block bottom protection body, and a slope protection structure is laid on an upstream slope of the rock block bottom protection body and the rock ballast filling body. By arranging the slag blocking dam structure on the side slope, when waste slag materials are piled at the position of the backwater side of the slag blocking dam structure on the side slope, the slag blocking dam structure can prevent the waste slag bodies piled on the side slope from falling into a water body under the action of self weight to affect water conservancy and hydropower engineering.

Description

Technical Field

[0001] The present invention relates to a slope waste dump structure for water conservancy and hydropower projects and a construction method thereof, which is applicable to the technical field of water conservancy and hydropower construction projects. Background Art

[0002] In water conservancy and hydropower projects, a large amount of earthwork excavation is involved in the project itself. However, the physical and mechanical properties of some of the excavated materials are difficult to meet the project's usage requirements, so it is necessary to arrange a special waste dump to store the excavated materials that are difficult to utilize. Currently, most of the waste dumps for water conservancy and hydropower projects are located as much as possible in water areas. In this way, not only is it convenient to build the bottom retaining structure, but also the safety of the waste dump can be guaranteed. However, some water conservancy and hydropower projects are located in high mountain and canyon areas, where the terrain is narrow and steep, making it difficult to arrange waste dumps, and the capacity is often limited. For this type of project, the existing waste dump types are difficult to meet their waste dumping requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: To solve the above technical problems, the present invention provides a slope waste dump structure for water conservancy and hydropower projects and a construction method thereof.

[0004] The technical solution adopted by the present invention is: A slope waste dump structure for water conservancy and hydropower projects, arranged on a near-water slope, having:

[0005] A waste dump body, stored on the slope;

[0006] A slag retaining dam structure, arranged at the bottom position of the waste dump body on the slope. The slag retaining dam structure can separate the waste dump body on the near-water slope from the water body;

[0007] A dry rubble slope protection body, laid on the waste dump body, and the bottom of the dry rubble slope protection body is arranged on the slag retaining dam structure;

[0008] The slag retaining dam structure has a block stone bottom protection body laid on the slope. On the block stone bottom protection body, there is a stone slag filling body, and on the water-facing slope of the block stone bottom protection body and the stone slag filling body, there is a slope protection structure. In this way, by arranging the slag retaining dam structure on the slope, when the waste dump material is stored at the backwater side position of the slag retaining dam structure on the slope, the slag retaining dam structure can separate the waste dump body on the slope from the water body, avoiding the waste dump body stored on the slope from falling into the water body under its own weight and affecting the water conservancy and hydropower project.

[0009] The stone slag filling body has a coarse stone slag filling body arranged on the block stone bottom protection body and a fine stone slag filling body arranged on the coarse stone slag filling body. In this way, the slag retaining dam structure from top to bottom is successively a fine stone slag filling body, a coarse stone slag filling body, and a block stone bottom protection body, and the particle size gradually increases from top to bottom, having a good retaining effect.

[0010] The slope protection structure has a block stone slope protection body laid on the water-facing slope of the block stone bottom protection body and the stone slag filling body, and an artificial block slope protection body laid on the block stone slope protection body. A reinforced stone cage is arranged at the top position of the block stone slope protection body and the artificial block slope protection body, and the reinforced stone cage is arranged at the corresponding position of the fine stone slag filling body. In this way, by laying the block stone slope protection body, the artificial block slope protection body and the reinforced stone cage on the water-facing slope of the slag retaining dam structure, it is convenient to play a good role in maintaining the fine stone slag filling body, the coarse stone slag filling body and the block stone bottom protection body.

[0011] The artificial block slope protection body is composed of artificial blocks laid on the water-facing slope. The artificial blocks are tetrahedral concrete blocks, and lifting hooks are installed on the artificial blocks.

[0012] The top end of the block stone bottom protection body is horizontal, and the maximum thickness of the block stone bottom protection body is one-fourth of the height of the slag retaining dam. In this way, the block stone bottom protection body with a horizontal top is convenient for arranging the stone slag filling body on the block stone bottom protection body.

[0013] The top elevation of the slag retaining dam structure is 4m away from the highest water level line, the width of the top end of the slag retaining dam structure is 10m, and the thickness of the fine stone slag filling body is 1m.

[0014] The thicknesses of the block stone slope protection body and the artificial block slope protection body are both 1.5m, and the slopes are both 1:1.6.

[0015] The block size of the block stone bottom protection body is not less than 1m, the block size of the block stone slope protection body is not less than 0.8m, the stone slag size of the coarse stone slag filling body is less than 0.8m, and the stone slag size of the fine stone slag filling body is less than 0.3m.

[0016] The thickness of the dry-laid stone slope protection body is 0.5m.

[0017] A construction method for the slope waste dump structure of a water conservancy and hydropower project, applying the above-mentioned slope waste dump structure of a water conservancy and hydropower project, is as follows:

[0018] According to the shape of the waste dump, conduct measurement and lofting, and mark the positions of the starting point and the ending point of the slag retaining dam structure;

[0019] Simultaneously from the starting point and the ending point of the slag retaining dam structure, continuously and circularly backfill block stones and stone slag materials towards the middle to form the block stone bottom protection body and the coarse stone slag filling body, and roll them compactly;

[0020] At the top position of the stone slag filling body, a block stone slope protection body is formed on the water-facing slope of the slag retaining dam structure by using a dump truck to backfill block stones;

[0021] Use a lifting machine to hoist the tetrahedrons to the design positions one by one to form the artificial block slope protection body;

[0022] Adopt the hoisting method of lifting machinery and the method of manual auxiliary righting. Place steel wire stone cages on the tops of the rubble slope protection body and the artificial block slope protection body, and form all the steel wire stone cages into a unified whole by means of binding or welding;

[0023] On the top of the coarse stone slag filling body, use dump trucks to spread and fill fine stone slag materials, and use rolling machinery to roll and compact them to form a fine stone slag filling body;

[0024] Remove the surface humus soil, tree roots, garbage, etc. within the range of the waste slag landfill;

[0025] Fill the waste slag to the height of the first-stage slope, and build a dry rubble slope protection body;

[0026] Continue to fill the waste slag.

[0027] The beneficial effects of the present invention are as follows: By arranging a slag retaining dam structure on the slope of a water conservancy and hydropower project, when waste slag materials are stored on the backwater side of the slag retaining dam structure on the slope, the slag retaining dam structure can play a role in retaining the waste slag body on the slope, avoiding the waste slag body from falling into the water body; By laying a block stone bottom protection body with a horizontal top on the slope, laying a coarse stone slag filling body on the block stone bottom protection body, laying a fine stone slag filling body on the coarse stone slag filling body, and laying a block stone slope protection body and an artificial block slope protection body on the slope of the water-facing side of the slag retaining dam structure, the slag retaining dam structure has a good retaining effect and can effectively relieve the loss caused by water flow scouring;

[0028] Arrange the slag retaining dam structure of the waste slag yard underwater and the waste slag body above water. This not only reduces the construction condition requirements for the slag retaining dam structure of the waste slag yard, enabling it to be constructed under non-dry land conditions, but also increases the storage range of the waste slag yard, improves the overall capacity of the waste slag yard, and reduces the difficulty of the overall earth-rock balance of the project; At the same time, by setting a block stone bottom protection body at the bottom of the slag retaining dam structure and arranging a block stone slope protection body, an artificial block slope protection body and steel wire stone cages on the outside, the anti-scouring ability of the slag retaining dam structure is ensured, and the overall stability of the waste slag yard is improved; In addition, by reserving a certain width at the top of the slag retaining dam structure, the ability to inspect, check and maintain the slope of the slag retaining dam structure is reserved, further ensuring the long-term stability of the waste slag yard. Therefore, this kind of waste slag yard has good effects in increasing the waste slag capacity, reducing the construction requirements and ensuring the overall stability. Brief Description of the Drawings

[0029] Figure 1 : Structural schematic diagram of the present invention.

[0030] Figure 2 : Structural schematic diagram of the slag retaining dam structure in the present invention.

[0031] Figure 3 、 Figure 4 : Structural schematic diagram of the artificial block in the present invention.

[0032] In the figure: 1, slope; 2, waste residue body; 3, dry rubble slope protection body; 4, debris retaining dam structure; 41, fine stone slag filling body; 42, reinforced stone cage; 43, coarse stone slag filling body; 44, artificial block slope protection body; 45, block stone slope protection body; 46, block stone bottom protection body; 5, water surface; 6, artificial block; 7, lifting hook. Specific implementation mode

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, and the present invention is not limited to the following embodiments.

[0034] This embodiment is a slope waste residue site structure for a water conservancy and hydropower project.

[0035] In this embodiment, there is a debris retaining dam structure 4 arranged on the slope 1. The debris retaining dam structure 4 has a block stone bottom protection body 46 laid on the slope 1. A coarse stone slag filling body 43 is laid on the upper end of the block stone bottom protection body 46, and a fine stone slag filling body 41 is laid on the coarse stone slag filling body 43. The top end of the block stone bottom protection body 46 is horizontal, so as to facilitate laying the coarse stone slag filling body 43 on the block stone bottom protection body 46. The debris retaining dam structure 4 is trapezoidal as a whole. The height of the top elevation of the debris retaining dam structure 4 from the highest water level line of the water surface 5 is 4 m. The width of the top end of the debris retaining dam structure 4 is 10 m. The thickness of the fine stone slag filling body 41 is 1 m. The maximum thickness of the block stone bottom protection body 46 is one-fourth of the height of the debris retaining dam. The block stone particle size of the block stone bottom protection body 46 is not less than 1 m. The stone slag particle size of the coarse stone slag filling body 43 is less than 0.8 m. The stone slag particle size of the fine stone slag filling body 41 is less than 0.3 m. By sequentially laying the block stone bottom protection body 46, the coarse stone slag filling body 43, and the fine stone slag filling body 41 from bottom to top on the near-water slope 1, and the block stone particle sizes of the block stone bottom protection body 46, the coarse stone slag filling body 43, and the fine stone slag filling body 41 gradually decrease, the stability of the debris retaining dam structure 4 can be maintained when the water flow in the debris retaining dam structure 4 flows from top to bottom.

[0036] In this embodiment, a slope protection structure is laid on the water-facing slope of the slag retaining dam structure 4. The slope protection structure includes a rubble slope protection body 45 laid on the water-facing slopes of the rubble bottom protection body 46 and the slag fill body, and an artificial block slope protection body 44 laid on the rubble slope protection body 45. A reinforced gabion 42 is provided at the top positions of the rubble slope protection body 45 and the artificial block slope protection body 44, and the reinforced gabion 42 is arranged at a position corresponding to the fine slag fill body 41. The thicknesses of both the rubble slope protection body 45 and the artificial block slope protection body 44 are 1.5 m, and the slopes are both 1:1.6. The particle size of the rubble in the rubble slope protection body 45 is not less than 0.8 m. The artificial block slope protection body 44 is composed of artificial blocks 6 laid on the water-facing slope. The artificial blocks 6 are tetrahedral concrete blocks, and lifting hooks 7 are installed on the artificial blocks 6. The weight of the artificial block 6 is 2.45 t, and the size of the reinforced gabion 42 is 2 m × 1 m × 1 m (length × width × height). In this way, by laying the rubble slope protection body 45 and the artificial block slope protection body 44 on the water-facing slope of the slag retaining dam structure 4, the stability of the slag retaining dam structure 4 is maintained when the water flow in the slag retaining dam structure 4 flows along the slope 1.

[0037] In this embodiment, a dry rubble slope protection body 3 is laid on the water-facing slope 1 of the waste slag body 2. The bottom of the dry rubble slope protection body 3 is arranged on the slag retaining dam structure 4, and the thickness of the dry rubble slope protection body 3 is 0.5 m. In this way, it can effectively prevent the bottom of the waste slag body 2 from collapsing due to water flow, reaching the slag retaining dam structure 4 or even the water conservancy and hydropower project.

[0038] The construction method of this embodiment is as follows:

[0039] According to the shape of the waste slag yard, carry out measurement and lofting, and mark the positions of the starting point and the ending point of the slag retaining dam structure 4;

[0040] From the starting point and the ending point of the slag retaining dam structure 4, continuously and circularly backfill rubble and slag materials towards the middle to form a rubble bottom protection body 46 and a coarse slag fill body 43, and compact them;

[0041] At the top position of the slag fill body, a rubble slope protection body 45 is formed on the water-facing slope of the slag retaining dam structure 4 by backfilling rubble with a dump truck;

[0042] Use a lifting machine to hoist the tetrahedrons to the design positions one by one to form an artificial block slope protection body 44;

[0043] Use a lifting machine for hoisting and manual assistance for straightening, place the reinforced gabions 42 on the tops of the rubble slope protection body 45 and the artificial block slope protection body 44, and form all the reinforced gabions 42 into a unified whole by means of tying or welding, etc.;

[0044] On the top of the coarse slag fill body 43, spread fine slag materials with a dump truck, and use a roller to compact and level them to form a fine slag fill body 41;

[0045] Remove the surface humus soil, tree roots, garbage, etc. within the waste filling range;

[0046] Fill the waste to the height of the first-level slope 1 and build the dry rubble slope protection body 3;

[0047] Continue to fill the waste.

[0048] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes should be covered within the protection scope of the present invention.

Claims

1. A slope waste dump structure for a water conservancy and hydropower project, characterized by: Arranged on the slope (1), having: Abandoned slag (2) is piled on the slope (1); A slag dam structure (4) is arranged at the bottom of the waste slag body (2) on the slope (1), and the slag dam structure (4) can separate the waste slag body (2) on the slope (1) from the water body; A dry stone slope protection body (3) is laid on the waste slag body (2), and the bottom of the dry stone slope protection body (3) is arranged on the slag retaining dam structure (4); The slag dam structure (4) comprises a block rock bottom protection body (46) laid on the side slope (1), a slag filling body is arranged on the block rock bottom protection body (46), and a slope protection structure is laid on the water-facing slope of the block rock bottom protection body (46) and the slag filling body.

2. The slope waste dump structure of a water conservancy and hydropower project according to claim 1 is characterized by: The ballast filling body comprises a coarse ballast filling body (43) arranged on a block stone bottom protection body (46) and a fine ballast filling body (41) arranged on the coarse ballast filling body (43).

3. The slope waste dump structure of a water conservancy and hydropower project according to claim 2 is characterized by: The slope protection structure comprises a block stone slope protection body (45) laid on the water-facing slope of a block stone bottom protection body (46) and a slag filling body, and an artificial block slope protection body (44) laid on the block stone slope protection body (45). A steel bar cage (42) is arranged at the top of the block stone slope protection body (45) and the artificial block slope protection body (44). The steel bar cage (42) is arranged at a position corresponding to the fine slag filling body (41).

4. The slope waste dump structure of a water conservancy and hydropower project according to claim 3 is characterized by: The artificial block slope protection body (44) is composed of an artificial block (6) laid on the water-facing slope, the artificial block (6) is a quadrilateral concrete block, and a hook (7) is installed on the artificial block (6).

5. The slope waste dump structure of a water conservancy and hydropower project according to claim 1, characterized in that: The top end of the block stone bottom protection body (46) is horizontal, and the maximum thickness of the block stone bottom protection body (46) is one quarter of the height of the slag dam structure (4).

6. The slope waste dump structure of a water conservancy and hydropower project according to claim 2, characterized in that: The top elevation of the slag dam structure (4) is 4 m above the highest water level, the width of the top of the slag dam structure (4) is 10 m, and the thickness of the fine slag filling body (41) is 1 m.

7. The slope waste dump structure of a water conservancy and hydropower project according to claim 3 is characterized by: The thickness of the block stone slope protection body (45) and the artificial block slope protection body (44) are both 1.5 m, and the slopes are both 1:1.

6.

8. The slope waste dump structure of a water conservancy and hydropower project according to claim 3, characterized in that: The block stone particle size of the block stone bottom protection body (46) is not less than 1m, the block stone particle size of the block stone slope protection body (45) is not less than 0.8m, the slag particle size of the coarse slag filling body (43) is less than 0.8m, and the slag particle size of the fine slag filling body (41) is less than 0.3m.

9. The slope waste dump structure of a water conservancy and hydropower project according to claim 1, characterized in that: The thickness of the dry stone slope protection body (3) is 0.5 m.

10. A construction method for a slope waste dump structure of a water conservancy and hydropower project, using the slope waste dump structure of a water conservancy and hydropower project as claimed in any one of claims 1 to 9, characterized in that: Measure and stake out the waste dump according to its shape, and mark the starting and ending points of the waste dam structure (4); Throwing rocks and slag materials from the starting point and the end point of the slag dam structure (4) to the middle in a continuous cycle to form a rock bottom protection body (46) and a coarse slag filling body (43), and rolling and compacting them; At the top of the slag filling body, a slag slope protection body (45) is formed on the water-facing slope of the slag dam structure (4) by dumping slag from a dump truck; Using a lifting machine to hoist the tetrahedrons one by one to the designed position to form an artificial block slope protection body (44); Using a lifting machine to hoist and manually assist in straightening, steel bar cages (42) are placed on top of the block stone slope protection body (45) and the artificial block slope protection body (44), and all the steel bar cages (42) are formed into a unified whole by tying or welding. Fine slag is spread on the top of the coarse slag filling body (43) by using a dump truck, and is compacted and leveled by using a rolling machine to form a fine slag filling body (41); Remove the surface humus, tree roots, garbage, etc. within the waste landfill area; Filling the waste slag to the height of the first level slope (1), and building a dry stone slope protection body (3); Continue to fill the waste.

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