Modular steel dam and construction method thereof

Abstract

The invention relates to the technical field of water conservancy projects, and discloses a modular steel dam and a construction method thereof.The modular steel dam comprises a base, a plurality of prefabricated frames and a plurality of prefabricated plate bodies, the base is suitable for being fixed to bottom bed rock, the prefabricated frames are arranged at intervals in the length direction of the base, one prefabricated plate body is arranged between every two adjacent prefabricated frames, and the prefabricated plate bodies are arranged on the base; the bottom faces of the prefabricated plate bodies are connected with the top face of the base, and the multiple prefabricated plate bodies form a water blocking face. The modular prefabricated design is adopted, the multiple prefabricated frames and the multiple prefabricated plate bodies are manufactured in advance, only the base needs to be poured on site, and then the prefabricated frames and the prefabricated plate bodies are arranged on the base, so that construction of the steel dam can be completed. The construction period is greatly shortened, the manufacturing cost and the follow-up maintenance cost are reduced, the sizes and the number of the prefabricated frames and the prefabricated plate bodies are adjustable, and the length and the shape of the built steel dam can be adjusted along with changes of hydrological conditions so as to meet use requirements.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a modular steel dam and a construction method thereof. Background Art

[0002] Pumped-storage power stations, also known as storage hydropower stations, are "stabilizers", "regulators" and "balancers" in the safe operation of power grids. They are mainly responsible for peak load regulation, frequency regulation and emergency standby of power systems, and can store and release electric energy. Pumped-storage power stations usually have two reservoirs, and there is a height difference between the two reservoirs, that is, the upper reservoir is relatively higher and the lower reservoir is relatively lower. When the demand for electricity is low or the load of the power grid is at a low point, the excess electricity is used to drive the electric pump to pump the water from the lower reservoir to the upper reservoir for storage. When the demand for electricity is high or the load of the power grid is at a peak, the gate of the upper reservoir is opened to allow water to flow down from the upper reservoir and generate electricity through the turbine, thereby converting the stored potential energy into electrical energy.

[0003] The dam in a pumped storage power station plays an important role in intercepting and storing water flow, and is one of the important structures that enable pumped storage power stations to achieve various functions. Traditional dams are generally concrete structures. Concrete dams are fixed structures that require on-site pouring and construction, with a long construction period, high cost, and high maintenance costs. In addition, the length and shape of the dam are difficult to change after it is built. This makes it difficult for them to flexibly change and adapt to changing hydrological conditions, such as floods and droughts. Summary of the invention

[0004] In view of this, the present invention provides a modular steel dam and a construction method thereof to solve the problems that existing concrete dams need to be cast on site, have a long construction period, high construction cost, high maintenance cost, and are difficult to change in length and shape after construction and cannot change with hydrological conditions.

[0005] In the first aspect, the present invention provides a modular steel dam, comprising: a base, a plurality of prefabricated frames and a plurality of prefabricated panels, wherein the base is suitable for being fixed on an underlying bedrock, the plurality of prefabricated frames are arranged at intervals along the length direction of the base, a prefabricated panel is arranged between two adjacent prefabricated frames, and the bottom surface of the prefabricated panel is connected to the top surface of the base, and the plurality of prefabricated panels form a water retaining surface.

[0006] Beneficial Effects

[0007] Prefabricated frames and prefabricated panels are all prefabricated in the factory and can be directly installed on site after being made. Therefore, when building a steel dam, it is only necessary to cast the base on site, and then set the prefabricated frames and prefabricated panels on the base to complete the construction of the steel dam. Compared with the concrete dam that requires all on-site casting, the construction period is greatly shortened, the construction cost is low, and the subsequent maintenance cost is also relatively low. In addition, since the steel dam uses multiple prefabricated frames and prefabricated panels, and the size and quantity of the prefabricated frames and prefabricated panels can be adjusted, even after the construction of the steel dam is completed, its length, shape, etc. can be adaptively adjusted according to the hydrological conditions, which is flexible and reliable.

[0008] In an optional embodiment, the prefabricated frame includes: three main columns, the three main columns are arranged in a right triangle, the main column corresponding to one of the right-angled sides of the right triangle is arranged on the base, and the main column corresponding to the hypotenuse is connected to the prefabricated panel.

[0009] Beneficial Effects

[0010] The three main columns arranged in a right-angled triangle give the prefabricated frame good stability and enable it to remain stable under the impact of water flow.

[0011] In an optional embodiment, the prefabricated frame further includes: a plurality of support columns, wherein the plurality of support columns are disposed within the three main columns.

[0012] Beneficial Effects

[0013] The support columns provided can strengthen the strength of the prefabricated frame, provide a stronger ability to withstand water pressure and provide better stability.

[0014] In an optional embodiment, the thickness of the prefabricated plate gradually becomes thinner from a side close to the base to a side away from the base.

[0015] In an optional embodiment, waterproof seals are provided at the joints of adjacent prefabricated panels and at the connection between the prefabricated panels and the base.

[0016] Beneficial Effects

[0017] By installing waterproof seals, the sealing of the joints of the various parts in the steel dam is improved to prevent water from flowing through and ensure the water-retaining effect of the steel dam.

[0018] In an optional embodiment, the prefabricated frame and the prefabricated panel are made of high-strength low-alloy steel.

[0019] In an optional embodiment, the foundation is a reinforced concrete foundation, and the reinforced concrete foundation is anchored to the underlying bedrock by rock bolts.

[0020] In a second aspect, the present invention further provides a modular steel dam construction method, which is applied to the modular steel dam construction, comprising:

[0021] Prefabricate a plurality of prefabricated frames and a plurality of prefabricated panels;

[0022] Cast-in-place foundation;

[0023] Disposing a plurality of the prefabricated frames at intervals on the base;

[0024] Arranging a plurality of the prefabricated panels on a plurality of the prefabricated frames;

[0025] A sealing process is performed between the adjacent prefabricated frames and the prefabricated panels.

[0026] Beneficial Effects

[0027] During construction, only the foundation casting work needs to be done. The prefabricated frame and prefabricated panel are factory prefabricated parts. After being made, they can be directly transported to the construction site for installation. This makes the construction of the steel dam more convenient and faster, greatly shortens the construction speed, and reduces the cost. Moreover, the size and quantity of the prefabricated frame and prefabricated panel are adjustable, flexible and adaptable.

[0028] In an optional embodiment, the step of performing sealing treatment between adjacent prefabricated frames and prefabricated panels includes:

[0029] Waterproof sealing members are provided at the connection between the prefabricated frame and the prefabricated panel, at the connection between the prefabricated panel and the base, and at the joints of adjacent prefabricated panels.

[0030] Beneficial Effects

[0031] Waterproof and seal each joint and connection of the steel dam to improve the sealing performance of the entire steel dam and ensure its water-retaining effect.

[0032] In an optional embodiment, the step of prefabricating a plurality of prefabricated frames and a plurality of prefabricated panels comprises:

[0033] The prefabricated frame and the prefabricated panel are subjected to anti-corrosion treatment.

[0034] Beneficial Effects

[0035] Anti-corrosion treatment of the prefabricated frames and prefabricated panels ensures that the steel dam will not be damaged by water corrosion during its service, making it safer and more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a front view of a modular steel dam according to an embodiment of the present invention;

[0038] Figure 2 A top view of a modular steel dam according to an embodiment of the present invention;

[0039] Figure 3 It is a left view of a modular steel dam according to an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the connection between a prefabricated frame and a base in a modular steel dam according to an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 1. Base;

[0043] 2. Prefabricated frame, 21. Main column, 22. Support column;

[0044] 3. Prefabricated panels. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] In related technologies, pumped storage power stations often use concrete dams to intercept and store water flow, thereby achieving the peak load regulation, frequency regulation and emergency standby functions of the pumped storage power station for the power system. The construction of concrete dams must first be sited based on geological conditions and hydrological conditions, and then the construction of the dam body can be carried out.

[0050] The entire concrete dam is cast on site. During the casting process, the quality and speed of the concrete must be strictly controlled to ensure the compactness and stability of the dam body. The construction period of the entire dam body is long and the cost is high. In the cold northern regions and high-altitude areas, temperature control measures are even required to prevent the dam body from cracking due to temperature differences. After the concrete dam is built, it also needs regular maintenance, which will also increase costs.

[0051] Secondly, after the concrete dam is built, its length and height are fixed and cannot be adjusted, but the hydrological conditions are often changing, and sometimes even floods and low water levels may occur. This kind of concrete dam is difficult to change and adapt accordingly. Moreover, the concrete dam will also affect the migration of fish and affect the original ecological environment.

[0052] In order to solve the above problems of concrete dam, this embodiment provides a modular steel dam and its construction method. Figures 1 to 4 , describing an embodiment of the present invention.

[0053] According to an embodiment of the present invention, on the one hand, a modular steel dam is provided, which includes: a base 1, a plurality of prefabricated frames 2 and a plurality of prefabricated panels 3, wherein the base 1 is suitable for being fixed on the underlying bedrock, the plurality of prefabricated frames 2 are arranged at intervals along the length direction of the base 1, a prefabricated panel 3 is arranged between two adjacent prefabricated frames 2, and the bottom surface of the prefabricated panel 3 is connected to the top surface of the base 1, and the plurality of prefabricated panels 3 form a water retaining surface.

[0054] Before the construction of modular steel dam, it is also necessary to conduct exploration and select a site with suitable geological and hydrological conditions. The base 1 is fixed on the underlying bedrock as the foundation of the modular steel dam to maintain the stability of the steel dam during its service. The size and quantity of the prefabricated frame 2 and the prefabricated panel 3 are calculated and determined according to the overall size of the steel dam. Generally speaking, the prefabricated frame 2 and the prefabricated panel 3 are made of the same size as much as possible, which is convenient for quantitative production. Multiple prefabricated frames 2 are arranged at intervals along the length direction of the base 1, that is, the extension direction of the steel dam. The function of the prefabricated frame 2 is to install the prefabricated panel 3 and provide stable support for the prefabricated panel 3. A prefabricated panel 3 is arranged between two adjacent prefabricated frames 2, that is, the two sides of the prefabricated panel 3 are respectively overlapped on the two prefabricated frames 2, and the prefabricated panel 3 and the prefabricated frame 2 are generally connected by welding. Two adjacent prefabricated panels 3 will share a prefabricated frame 2, that is, except for the prefabricated frames 2 at the two ends, each of the other prefabricated frames 2 is connected to the sides of the two prefabricated panels 3 at the same time, so that the adjacent prefabricated panels 3 can fit tightly. When the prefabricated panels 3 are installed, their bottom surfaces must also be connected and fit with the top surface of the base 1 to prevent water from flowing through. When the prefabricated frames 2 and prefabricated panels 3 are installed, as shown in the figure, Figure 1 As shown, the left side of the prefabricated panel body 3 is the incoming water side, and the right side is the back water side, that is, the side of the prefabricated panel body 3 away from the prefabricated frame 2 can block the incoming water, so that the modular steel dam can achieve the water retaining function.

[0055] This modular steel dam adopts a modular prefabrication process, in which the prefabricated frame 2 and the prefabricated plate 3 are all prefabricated parts that can be prefabricated in the factory in advance and then transported to the construction site for installation. Therefore, during the construction of the modular steel dam, only the pouring of the base 1 is required. Compared with the construction of traditional concrete dams, the on-site pouring work is reduced, and most of the components are prefabricated parts, the construction time can be greatly shortened, the construction period is shortened, and it is not restricted by weather factors. The construction and maintenance costs can be reduced, which has good economic benefits. In addition, after the modular steel dam is built, its length and shape are also easy to change. It has flexible and adjustable characteristics and can adapt to changes in hydrological conditions.

[0056] In one embodiment, the foundation 1 is a reinforced concrete foundation, which is anchored to the underlying bedrock by rock bolts.

[0057] Specifically, the base 1 is a reinforced concrete base that needs to be cast on site, which can provide good and stable support for the prefabricated frame 2 and prefabricated panel 3 to be installed later. The reinforced concrete base is anchored to the underlying bedrock by rock bolts. The underlying bedrock is a hard rock layer under the surface, which is difficult to connect with conventional bolts. However, rock bolts, as a reliable rock fixing tool, can firmly connect the reinforced concrete base to the underlying bedrock, ensuring that the final steel dam is stable and reliable.

[0058] In some embodiments, the prefabricated frame 2 includes: three main columns 21, which are arranged in a right triangle. The main column 21 corresponding to one of the right-angled sides of the right triangle is set on the base 1, and the main column 21 corresponding to the hypotenuse is connected to the prefabricated panel 3.

[0059] like Figure 1 , Figure 4 As shown, it can be seen from the projection at any end of the modular steel dam that the prefabricated frame 2 has an outer shape of a right triangle, and the three sides of the right triangle correspond to three main columns 21, and the three main columns 21 are welded and connected in sequence. The main column 21 corresponding to one of the right-angled sides is fixedly set on the base 1, and in this embodiment, the main columns 21 corresponding to the two right-angled sides are equal in length, that is, the prefabricated frame 2 has an outer shape of an isosceles right triangle. Of course, in other embodiments, the outer shape of the prefabricated frame 2 can be a non-isosceles right triangle, that is, the lengths of the main columns 21 corresponding to the two right-angled sides are not equal. During actual construction, the length of the main column 21 and the angle between the main columns 21 can be adjusted according to the actual water retaining requirements. The main column 21 corresponding to the hypotenuse is used to set the prefabricated panel 3, and the inclination angle of the prefabricated panel 3 is adapted to the inclination angle of the hypotenuse.

[0060] The triangular prefabricated frame 2 has good support stability, can provide good support for the prefabricated board 3, and can remain stable even when subjected to large water flow impact. Of course, in other embodiments, the prefabricated frame 2 can be a triangle of other shapes.

[0061] In another embodiment, the prefabricated frame 2 may also be in other shapes such as an isosceles trapezoid, a right-angled trapezoid, etc.

[0062] In some embodiments, the prefabricated frame 2 further includes: a plurality of support columns 22 , and the plurality of support columns 22 are disposed within the three main columns 21 .

[0063] The support columns 22 can be straight or curved, and can be welded at intervals inside the three main columns 21 , which can provide support forces in different directions for the three main columns 21 , thereby improving the strength and support stability of the prefabricated frame 2 .

[0064] In one embodiment, the thickness of the prefabricated plate 3 gradually becomes thinner from the side close to the base 1 to the side far away from the base 1 .

[0065] Specifically, the upper part of the prefabricated plate 3 is thinner, the lower part is thicker, and the thickness is uniform and gradual. Since the lower part of the steel dam is subjected to greater force, this prefabricated plate 3 with a thicker bottom and a thinner top can improve the overall strength and stability of the steel dam and prevent the prefabricated plate 3 from being deformed and damaged due to water flow impact or external loads.

[0066] In another embodiment, the thickness of the prefabricated board body 3 may not vary uniformly, that is, the upper half of the prefabricated board body 3 is made into a fixed size, and the lower half is made into another fixed size.

[0067] In another embodiment, the prefabricated plate body 3 may also be selected as a flat plate with uniform thickness.

[0068] In some embodiments, the prefabricated frame 2 and the prefabricated panel 3 are made of high-strength low-alloy steel.

[0069] High-strength low-alloy steel has a low alloying element content, and has a high yield limit, good plasticity and toughness, as well as good welding performance and corrosion resistance. The use of high-strength low-alloy steel materials to make the prefabricated frame 2 and the prefabricated panel 3 can achieve high strength, low cost, and corrosion resistance.

[0070] In some embodiments, waterproof seals are provided at the joints of adjacent prefabricated panels 3 and at the connection between the prefabricated panels 3 and the base 1 .

[0071] The main function of the modular steel dam is to block water. However, since the steel dam is formed by connecting multiple prefabricated frames 2 and prefabricated panels 3, it is not a complete whole. Therefore, waterproof seals need to be set at each connection position for sealing to improve the waterproofness of the modular steel dam. The main sealing positions are such as the joints between adjacent prefabricated panels 3 and the connection between the prefabricated panels 3 and the base 1. Other positions that need to be sealed include the joints between the prefabricated frame 2 and the prefabricated panel 3, and the welding joints of the main columns 21 and the support columns 22 in the prefabricated frame 2. The waterproof seal can be a waterproof coating or a sealing strip formed by coating a waterproof material. Common waterproof materials include polyurethane caulking materials.

[0072] According to an embodiment of the present invention, on the other hand, a modular steel dam construction method is also provided, which is applied to the modular steel dam construction. The structure of the modular steel dam is the same as the structure of the modular steel dam in the above embodiment, and will not be repeated here. The construction method includes:

[0073] (1) prefabricating a plurality of prefabricated frames 2 and a plurality of prefabricated panels 3;

[0074] The prefabricated frame 2 and the prefabricated plate 3 are both made of high-strength alloy steel. The prefabricated frame 2 includes three main columns 21 and multiple support columns 22. The main columns 21 and the support columns 22 can be made of round steel pipes and welded using precision welding technology. When welding the prefabricated frame 2, it is necessary to ensure that the welding is in place and the connection is firm to meet the bearing requirements of the prefabricated frame 2 during long-term use. The size of the prefabricated frame 2 is adjusted according to the height of the dam body, terrain and other requirements.

[0075] The prefabricated plate body 3 is usually thinner in the upper part, with a thickness generally ranging from 10 to 15 mm, and thicker in the lower part, with a thickness generally ranging from 18 to 20 mm.

[0076] Usually, the prefabricated frame 2 and the prefabricated panel 3 need to be treated for corrosion. Specifically, the prefabricated frame 2 is generally treated with zinc spraying to form an anti-corrosion layer to withstand multiple flows and erosions of water. The surface of the prefabricated panel 3 is usually treated with hot-dip galvanizing, spraying or coating to achieve corrosion resistance, so that the surface of the prefabricated panel 3 has strong corrosion resistance.

[0077] The above-mentioned prefabrication steps are generally carried out in a factory, and the prefabricated prefabricated frame 2 and prefabricated panel 3 can be directly transported to the construction site to wait for on-site installation.

[0078] (2) Cast-in-place foundation 1;

[0079] The base 1 is a reinforced concrete base cast on site, and the depth of the base 1 can be determined according to geological survey results. The formed base 1 needs to be firm and flat, able to support the weight of the entire steel dam and remain stable.

[0080] (3) multiple prefabricated frames 2 are arranged on the base 1 at intervals;

[0081] The prefabricated frames 2 are installed one by one on the base 1 at intervals by means of lifting equipment to achieve fixation.

[0082] (4) Arranging a plurality of prefabricated panels 3 on a plurality of prefabricated frames 2;

[0083] A prefabricated plate body 3 is arranged between two adjacent prefabricated frames 2, and the two are connected by welding. After welding, the welds must be checked to ensure that there is no leakage hazard at the welds.

[0084] (5) Sealing treatment is performed between adjacent prefabricated frames 2 and prefabricated panels 3.

[0085] Specifically, waterproof seals are provided at the connection between the prefabricated frame 2 and the prefabricated panel 3 , at the connection between the prefabricated panel 3 and the base 1 , and at the joints between adjacent prefabricated panels 3 .

[0086] Waterproof seals are made of waterproof materials with good elasticity and weather resistance, such as polyurethane caulking materials or rubber sealing strips. Through high-pressure injection or manual coating, a continuous waterproof path is formed on the steel dam at various joints and seams that need to be sealed. After the sealing process, a sealing test can also be carried out to ensure that no water seepage occurs.

[0087] After the installation steps of the modular steel dam are completed, a commissioning test can be carried out, and the dam can be put into use after passing the commissioning test. The specific test process includes water seepage test and stability test.

[0088] Water seepage test: Water is injected to simulate the water flow environment to observe whether there is leakage in various parts of the steel dam. At the same time, pressure sensors are used to monitor the changes in water pressure in different parts of the steel dam to ensure that the stress and strain of the steel dam structure are within the design allowable range.

[0089] Stability test: A total station is used to monitor the displacement of the steel dam, and the horizontal and vertical displacements of the steel dam are measured under different working conditions (such as full water, no water, etc.) to ensure that the displacement meets the design requirements.

[0090] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A modular steel dam, characterized in that: include: A base (1), a plurality of prefabricated frames (2) and a plurality of prefabricated panels (3), wherein the base (1) is suitable for being fixed on an underlying bedrock, the plurality of prefabricated frames (2) are arranged at intervals along the length direction of the base (1), a prefabricated panel (3) is arranged between two adjacent prefabricated frames (2), and the bottom surface of the prefabricated panel (3) is connected to the top surface of the base (1), and the plurality of prefabricated panels (3) form a water retaining surface.

2. The modular steel dam according to claim 1, characterized in that: The prefabricated frame (2) comprises: three main columns (21), the three main columns (21) are arranged in a right triangle, the main column (21) corresponding to one of the right-angled sides of the right triangle is arranged on the base (1), and the main column (21) corresponding to the hypotenuse is connected to the prefabricated plate body (3).

3. The modular steel dam according to claim 2, characterized in that: The prefabricated frame (2) further comprises: a plurality of support columns (22), wherein the plurality of support columns (22) are arranged inside the three main columns (21).

4. The modular steel dam according to claim 2, characterized in that: The thickness of the prefabricated plate body (3) gradually becomes thinner from the side close to the base (1) to the side far away from the base (1).

5. The modular steel dam according to claim 2, characterized in that: Waterproof sealing components are provided at the joints of adjacent prefabricated panels (3) and at the connection between the prefabricated panels (3) and the base (1).

6. The modular steel dam according to claim 1, characterized in that: The prefabricated frame (2) and the prefabricated plate body (3) are made of high-strength low-alloy steel.

7. The modular steel dam according to any one of claims 1 to 6, characterized in that: The base (1) is a reinforced concrete base, and the reinforced concrete base is anchored to the underlying bedrock by rock bolts.

8. A modular steel dam construction method, applied to the modular steel dam construction according to any one of claims 1 to 7, characterized in that: include: Prefabricating a plurality of prefabricated frames (2) and a plurality of prefabricated panels (3); Cast-in-place foundation (1); Arranging a plurality of the prefabricated frames (2) at intervals on the base (1); Arranging a plurality of the prefabricated panels (3) on a plurality of the prefabricated frames (2); A sealing process is performed between the adjacent prefabricated frames (2) and the prefabricated panels (3).

9. The modular steel dam construction method according to claim 8, characterized in that: The step of sealing the adjacent prefabricated frames (2) and prefabricated panels (3) comprises: Waterproof sealing components are provided at the connection between the prefabricated frame (2) and the prefabricated panel (3), at the connection between the prefabricated panel (3) and the base (1), and at the joints between adjacent prefabricated panels (3).

10. The modular steel dam construction method according to claim 8, characterized in that: The step of prefabricating a plurality of prefabricated frames (2) and a plurality of prefabricated panels (3) comprises: The prefabricated frame (2) and the prefabricated panel (3) are subjected to anti-corrosion treatment.

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