Homogeneous earth dam heightening structure

Abstract

The utility model provides a kind of homogeneous earth dam heightening structure, including extrusion side wall being arranged on original earth-rock dam impervious body, the upstream side and downstream side of homogeneous earth dam heightening structure are respectively provided with continuous extrusion side wall, and backfill material is filled between the extrusion side wall of two sides, and extrusion side wall includes several layers of wall body, and reinforcing soil mat is arranged between each layer of wall body of two sides, and dam top pavement is arranged between the wall body of the highest layer of two sides, extrusion side wall is extruded into shape, cooperate backfill material and dam top pavement, directly form heightening structure on the impervious body of original earth-rock dam, simple structure, convenient construction, the dam body height of small reservoir earth-rock dam can be lifted using lower cost.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and in particular to a structure for raising a homogeneous earth dam. Background Technology

[0002] Homogeneous earth dams are typically constructed in one go, then impound water to realize their benefits, such as power generation and flood control. However, some dams, after operating for a period of time, require additional height increases for various reasons. Compared to constructing them all at once, this method allows the reservoir to realize its benefits earlier with less investment. Currently, heightening earth-rock dams usually involves backfilling and thickening the downstream section. However, for some small reservoir earth-rock dams, the required height increase is not significant. Using backfilling and thickening would result in excessive land occupation and waste of earth and rock materials on the downstream side, leading to a waste of space and resources. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a homogeneous earth dam heightening structure that can solve the problem that the post-dam thickening and heightening scheme is not suitable for small reservoir earth-rock dams.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] A homogeneous earth dam heightening structure includes extrusion sidewalls installed on the original earth-rock dam seepage prevention body. Continuous extrusion sidewalls are respectively provided on the upstream and downstream sides of the homogeneous earth dam heightening structure. Backfill material is filled between the extrusion sidewalls on both sides. The extrusion sidewalls include several layers of walls. Reinforced geotextile mats are provided between each layer of walls on both sides. A dam crest road surface is provided between the highest layers of walls on both sides.

[0006] Based on the above technical solutions, the present invention may also adopt the following further technical solutions, or combine these further technical solutions:

[0007] The extrusion sidewalls are constructed using primary dry-hard concrete.

[0008] The reinforced geomat is located at the lower-middle height of the wall. The side of the reinforced geomat that connects to the wall is bent upward and pressed tightly against the surface of the wall. The reinforced geomat is mechanically anchored to the inner side of the wall.

[0009] The wall is formed by extrusion molding. The cross-section of the wall is a combination of trapezoidal blocks and square blocks that are narrower at the top and wider at the bottom. The square blocks are located above the trapezoidal blocks. The upper wall is fitted into the square blocks of the lower wall. The distance between the two walls gradually narrows during the lifting process.

[0010] The backfill material is composed of impermeable clay, and the compaction degree of the backfill material is above 96%.

[0011] The dam crest road surface is mainly composed of a water-stabilized layer and an asphalt pavement.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects: by using extruded sidewalls, combined with backfill materials and dam top road surface, a heightening structure is formed directly on the seepage prevention body of the original earth-rock dam. The structure is simple and the construction is convenient, and the dam height of small reservoir earth-rock dams can be increased at a lower cost. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote elements with the same or similar functions throughout. However, it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting this utility model. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] This utility model provides a homogeneous earth dam heightening structure, including an extrusion sidewall 1 set on the original earth-rock dam 5 seepage prevention body. Continuous extrusion sidewalls 1 are respectively set on the upstream and downstream sides of the homogeneous earth dam heightening structure. Backfill material 3 is filled between the extrusion sidewalls 1 on both sides. The extrusion sidewall 1 includes several layers of walls. A reinforced geotextile mat 2 is set between each layer of walls on both sides. A dam top road surface 4 is set between the highest layer of walls on both sides.

[0017] In this embodiment, the useless structures on the top of the original earth-rock dam 5 need to be excavated in advance until the seepage barrier is exposed, and the heightened structure is directly connected to the seepage barrier.

[0018] The extrusion sidewall 1 is constructed using grade I dry-hard concrete.

[0019] The reinforced geomat 2 is located at the lower middle height of the wall. The side of the reinforced geomat 2 that is connected to the wall is bent upward and pressed tightly against the surface of the wall. The reinforced geomat 2 is mechanically anchored to the inside of the wall.

[0020] The wall is formed by extrusion molding. The cross-section of the wall is a combination of trapezoidal blocks and square blocks that are narrower at the top and wider at the bottom. The square blocks are located on top of the trapezoidal blocks. The upper wall is fitted into the square blocks of the lower wall. The distance between the two walls gradually narrows during the lifting process.

[0021] Backfill material 3 is composed of impermeable clay, and the compaction degree of the backfill material is above 96%.

[0022] The dam crest road surface 4 is mainly composed of a water-stabilized layer and an asphalt pavement.

[0023] Based on the description and accompanying drawings of this utility model, those skilled in the art can easily manufacture or use the homogeneous earth dam heightening structure of this utility model, and can produce the positive effects described in this utility model.

[0024] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. The terms "installed," "set," "equipped with," "connected," "connected," and "sleeve-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two mechanisms, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In the description of this utility model, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

[0026] Furthermore, in practicing the claims of this utility model, those skilled in the art can understand and influence variations to the disclosed embodiments through a study of the drawings, the disclosure, and the appended claims. Additionally, in the claims and description, words such as "comprising" and "containing" do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the present utility model are covered by the scope of the claims of the present utility model, and will not be listed here.

Claims

1. A structure for raising a homogeneous earth dam, characterized in that, The structure includes a squeezed sidewall (1) set on the seepage prevention body of the original earth-rock dam (5). The upstream and downstream sides of the homogeneous earth dam heightening structure are respectively provided with continuous squeezed sidewalls (1). Backfill material (3) is filled between the squeezed sidewalls (1) on both sides. The squeezed sidewall (1) includes several layers of walls. Reinforced geotextile mats (2) are set between each layer of walls on both sides. A dam top road surface (4) is set between the highest layer of walls on both sides.

2. The homogeneous earth dam heightening structure as described in claim 1, characterized in that, The extrusion sidewall (1) is made of grade I dry hard concrete.

3. The homogeneous earth dam heightening structure as described in claim 1, characterized in that, The reinforced geomat (2) is located at the lower middle height of the wall. The side of the reinforced geomat (2) connected to the wall is bent upward and closely attached to the surface of the wall. The reinforced geomat (2) is mechanically anchored to the inner side of the wall.

4. The homogeneous earth dam heightening structure as described in claim 1, characterized in that, The wall is formed by extrusion molding. The cross-section of the wall is a combination of trapezoidal blocks and square blocks that are narrower at the top and wider at the bottom. The square blocks are located above the trapezoidal blocks. The upper wall is fitted into the square blocks of the lower wall. The distance between the two walls gradually narrows during the lifting process.

5. The homogeneous earth dam heightening structure as described in claim 1, characterized in that, The backfill material (3) is composed of impermeable clay material, and the compaction degree of the backfill material is above 96%.

6. The homogeneous earth dam heightening structure as described in claim 1, characterized in that, The dam top road surface (4) is mainly composed of a water-stabilized layer and an asphalt pavement.

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