Experimental method and experimental mold for steam generator compartment concrete pouring

Abstract

The invention discloses an experimental method and an experimental mold for steam generator compartment concrete pouring, and relates to the technical field of nuclear power plant construction, and the experimental method for steam generator compartment concrete pouring comprises the following steps: providing an experimental mold; a first strain monitoring assembly is installed on the first inner cavity wall of the first pouring cavity, and a second strain monitoring assembly is installed on the second inner cavity wall of the second pouring cavity; concrete with the preset height is poured into the first pouring cavity and the second pouring cavity; waiting for a preset time, obtaining strain information of the first inner cavity wall within the preset time through each strain monitoring assembly, and obtaining second strain information of the second inner cavity wall within the preset time through each second strain monitoring assembly; and comparing the first strain information and the second strain information with a strain threshold. By means of the method, the pouring height of concrete pouring in the mold every time and the waiting time between two adjacent times of concrete pouring can be determined.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power plant construction, and in particular to an experimental method for pouring concrete for a steam generator compartment and an experimental mold thereof. Background Art

[0002] The nuclear island steam generator is one of the key components of the nuclear steam supply system of a nuclear power plant. It is located in the nuclear island and its main function is to transfer the heat generated by the reactor to the water on the secondary side to heat it and generate steam. At present, the construction of the steam generator compartment is usually carried out by installing a steam generator compartment in the nuclear island and pouring concrete into the steam generator compartment to form a steam generator compartment structure. Due to the large volume of the steam generator compartment, a large amount of concrete needs to be poured into the steam generator compartment to form the steam generator compartment. As a result, a large amount of concrete will generate a large amount of hydration heat and squeeze the steam generator compartment, causing the steam generator compartment to produce irreversible deformation. Therefore, in order to avoid the irreversible deformation of the steam generator compartment, it is necessary to pour concrete into the steam generator compartment in multiple times, and a period of time should be waited between two adjacent concrete pourings. In order to better control the deformation of the mold, it is also necessary to determine the pouring height of each concrete pouring into the mold and the waiting time between two adjacent concrete pourings, but it is currently impossible to determine the pouring height of each concrete pouring into the mold and the waiting time between two adjacent concrete pourings. Summary of the invention

[0003] The main purpose of the present invention is to propose an experimental method and an experimental mold for pouring concrete in a steam generator compartment, aiming to solve the technical problem that it is impossible to determine the pouring height of each concrete pouring into the mold and the waiting time between two adjacent concrete pourings.

[0004] To achieve the above object, the present invention provides an experimental method for pouring concrete for a steam generator compartment, the experimental method comprising:

[0005] An experimental mold is provided; wherein the experimental mold comprises an arc wall and a plane wall, a first casting cavity is formed in the arc wall, a second casting cavity is formed in the plane wall, the arc wall and the plane wall are arranged at an angle, and the first casting cavity is connected to the second casting cavity;

[0006] Install a first strain monitoring component on a first inner cavity wall of the first casting cavity, and install a second strain monitoring component on a second inner cavity wall of the second casting cavity;

[0007] pouring concrete of a preset height into both the first pouring cavity and the second pouring cavity;

[0008] Waiting for a preset time, and obtaining the strain information of the first inner cavity wall within the preset time through each of the strain monitoring components, and obtaining the second strain information of the second inner cavity wall within the preset time through each of the second strain monitoring components;

[0009] comparing the first strain information and the second strain information with a strain threshold;

[0010] If the first strain information and the second strain information are both within the strain threshold, the preset height and the preset time meet the requirements;

[0011] If the first strain information or the second strain information is not within the strain threshold, the preset height and the preset time do not meet the requirements.

[0012] In one embodiment, the first strain monitoring assembly includes a plurality of first strain sensors, and the second strain monitoring assembly includes a plurality of second strain sensors;

[0013] The steps of installing a first strain monitoring component on the first inner cavity wall of the first casting cavity and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity include:

[0014] A plurality of first strain sensors are installed at intervals along the vertical direction on the first inner cavity wall, and a plurality of second strain sensors are installed at intervals along the vertical direction on the second inner cavity wall of the second casting cavity.

[0015] In one embodiment, the length direction of the curved wall is a first direction, and two first monitoring areas are formed at two ends of the first casting cavity along the first direction, respectively; the length direction of the plane wall is a second direction, and two second monitoring areas are formed at two ends of the second casting cavity along the second direction, respectively;

[0016] The steps of installing a first strain monitoring component on the first inner cavity wall of the first casting cavity and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity include:

[0017] Two first strain monitoring components are respectively installed at positions of the first inner cavity wall corresponding to the two first monitoring areas, and two first strain monitoring components are respectively installed at positions of the first inner cavity wall corresponding to the two first monitoring areas.

[0018] The present invention also proposes an experimental mold for pouring concrete in a steam generator compartment, and the experimental mold is applied to the experimental method for pouring concrete in a steam generator compartment as described above; wherein a pouring port for pouring concrete is provided at the top of the connection between the plane wall and the curved wall, and the pouring port is connected to the first pouring cavity and the second pouring cavity.

[0019] In one embodiment, a plurality of spaced-apart inclined steps are formed on the curved wall, each of the inclined steps protrudes toward a side away from the first casting cavity to form an inclined surface, and a plurality of spaced-apart straight steps are provided on the plane wall.

[0020] In one embodiment, the straight steps include a plurality of first steps and a plurality of second steps, each of the first steps protrudes outward along the length direction of the planar wall, and the protrusion lengths of each of the first steps are different, and each of the second steps protrudes outward along the width direction of the planar wall, and the protrusion lengths of each of the second steps are different.

[0021] In one embodiment, a plurality of the first steps are arranged at intervals along the height direction of the plane wall, and the protrusion lengths of the plurality of the first steps arranged at intervals decrease from top to bottom to form an inverted step shape.

[0022] In one embodiment, the plurality of inclined steps are arranged at intervals along the height direction of the arc-shaped wall, and the protruding lengths of the plurality of inclined steps are different, and the inclination angles of the inclined surfaces are different.

[0023] In one embodiment, a plurality of embedded parts of different sizes are arranged at intervals on the curved wall or the plane wall.

[0024] In one embodiment, a hole is opened on the plane wall, and the hole runs through the width direction of the plane wall.

[0025] The technical solution of the present invention provides an experimental mold, which includes an arc wall and a plane wall, a first casting cavity is formed in the arc wall, and a second casting cavity is formed in the plane wall. The arc segment and the plane segment of the steam generator compartment can be simulated by the experimental mold with the arc wall and the plane wall. By installing a first strain monitoring component on the first inner cavity wall of the first casting cavity, and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity, the first strain information of the first inner cavity wall and the first strain information of the second inner cavity wall can be obtained respectively by the first strain monitoring component and the second strain monitoring component. The deformation degree of the plane wall and the arc wall of the experimental mold can be judged by the first strain information and the second strain information, so as to judge the deformation degree of the experimental mold. A preset height for concrete pouring and a preset time for waiting for concrete pouring are pre-set, concrete of the preset height is poured into the experimental mold, and the preset time is waited. While pouring and waiting, the first strain information of the first inner cavity wall is obtained in real time by the first strain monitoring component, and the second strain information of the second inner cavity wall is obtained in real time by the second strain monitoring component. After waiting for the preset time, the first strain information and the second strain information are compared with the strain threshold of the experimental mold. If the first strain information and the second strain information are both within the strain threshold, then under the conditions of the preset time and the preset height, the deformation of the experimental mold meets the requirements for concrete pouring in the experimental mold, and no irreversible deformation occurs. In addition, the experimental mold is a simulation of the steam generator compartment, so it can be determined that the preset time and the preset height meet the requirements for concrete pouring in the steam generator compartment, that is, it can be determined that the preset time and the preset height are used to pour concrete in the steam generator compartment. It can be understood that, on the contrary, if the first strain information or the second strain information is not within the strain threshold, it can be determined that the preset time and the preset height cannot be used to pour concrete in the steam generator compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic flow chart of an embodiment of an experimental method for pouring concrete in a steam generator compartment provided by the present invention;

[0028] Figure 2 A schematic structural diagram of an embodiment of an experimental mold for pouring concrete for a steam generator compartment provided by the present invention;

[0029] Figure 3 A schematic structural diagram of an embodiment of an experimental mold for pouring concrete for a steam generator compartment provided by the present invention from another perspective;

[0030] Figure 4 A schematic cross-sectional view from a top view of an embodiment of an experimental mold for pouring concrete in a steam generator compartment provided by the present invention.

[0031] Description of Figure Numbers:

[0032] 10. Curved wall; 11. First casting cavity; 12. Inclined step; 20. Plane wall; 21. Second casting cavity; 22. Straight step; 221. First step; 222. Second step; 23. Embedded part; 24. Hole; 30. Casting port; 40. First strain sensor; 50. Second strain sensor.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The invention provides an experimental method for pouring concrete of a steam generator compartment.

[0038] See also Figures 1 to 4 In one embodiment of the present invention, the experimental method for pouring concrete in the steam generator compartment includes:

[0039] Step S100, providing an experimental mold; wherein the experimental mold includes a curved wall 10 and a plane wall 20, a first casting cavity 11 is formed in the curved wall 10, a second casting cavity 21 is formed in the plane wall 20, the curved wall 10 and the plane wall 20 are arranged at an angle, and the first casting cavity 11 is connected to the second casting cavity 21;

[0040] Step S200, installing a first strain monitoring component on a first inner cavity wall of the first casting cavity, and installing a second strain monitoring component on a second inner cavity wall of the second casting cavity;

[0041] Step S300, pouring concrete of a preset height into both the first pouring cavity and the second pouring cavity;

[0042] Step S400, waiting for a preset time, and obtaining the strain information of the first inner cavity wall within the preset time through each of the strain monitoring components, and obtaining the second strain information of the second inner cavity wall within the preset time through each of the second strain monitoring components;

[0043] Step S500, comparing both the first strain information and the second strain information with a strain threshold;

[0044] Step S510: if the first strain information and the second strain information are both within the strain threshold, the preset height and the preset time meet the requirements;

[0045] Step S520: If the first strain information or the second strain information is not within the strain threshold, the preset height and the preset time do not meet the requirements.

[0046] The technical solution of the present invention provides an experimental mold, which includes a curved wall 10 and a plane wall 20. A first casting cavity 11 is formed in the curved wall 10, and a second casting cavity 21 is formed in the plane wall 20. The curved section and the plane section of the steam generator compartment can be simulated by the experimental mold with the curved wall 10 and the plane wall 20. By installing a first strain monitoring component on the first inner cavity wall of the first casting cavity 11, and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity 21, the first strain information of the first inner cavity wall and the first strain information of the second inner cavity wall can be obtained respectively by the first strain monitoring component and the second strain monitoring component. The deformation degree of the plane wall 20 and the curved wall 10 of the experimental mold can be judged by the first strain information and the second strain information, so that the deformation degree of the experimental mold can be judged. A preset height for concrete pouring and a preset time for waiting between concrete pouring are set in advance, concrete of a preset height is poured into the experimental mold, and the preset time is waited. During pouring and waiting, the first strain information of the first inner cavity wall is obtained in real time through the first strain monitoring component, and the second strain information of the second inner cavity wall is obtained in real time through the second strain monitoring component. After waiting for the preset time, the first strain information and the second strain information are compared with the strain threshold of the experimental mold. If both the first strain information and the second strain information are within the strain threshold, the deformation of the experimental mold for concrete pouring meets the requirements under the conditions of the preset time and the preset height, and no irreversible deformation occurs. And the experimental mold is a simulation of the steam generator compartment, so it can be determined that the preset time and the preset height meet the requirements for concrete pouring of the steam generator compartment, that is, it can be determined that the preset time and the preset height are used to pour concrete for the steam generator compartment. It can be understood that, on the contrary, if the first strain information or the second strain information is not within the strain threshold, it can be determined that the preset time and the preset height cannot be used to pour concrete for the steam generator compartment.

[0047] Further, the first strain information is the first strain value of the first inner cavity wall at each time point during the waiting time, and the second strain information is the second strain value of the second inner cavity wall at each time point during the waiting time. If both the first strain information and the second strain information are within the strain threshold, then all first strain values ​​and all second strain values ​​obtained during the waiting time are within the strain threshold. If both the first strain information or the second strain information are within the strain threshold, then any first strain value or any second strain value obtained during the waiting time is within the strain threshold.

[0048] In one embodiment, the first strain monitoring assembly includes a plurality of first strain sensors 40 , and the second strain monitoring assembly includes a plurality of second strain sensors 50 ;

[0049] Step S200 includes:

[0050] Step S210: installing a plurality of first strain sensors at intervals along the vertical direction on the first inner cavity wall, and installing a plurality of second strain sensors at intervals along the vertical direction on the second inner cavity wall of the second casting cavity.

[0051] Vertical Figure 2 The up and down directions in .

[0052] Specifically, as shown in the figure, a plurality of first strain sensors 40 are arranged at intervals along the upper and lower directions of the first inner cavity wall, and a plurality of second strain sensors 50 are arranged at intervals along the upper and lower directions of the second inner cavity wall. The first inner cavity wall and the second inner cavity wall can be monitored more accurately and comprehensively through the plurality of first strain sensors 40 and the plurality of second strain sensors 50.

[0053] In one embodiment, the length direction of the curved wall 10 is the first direction, and two first monitoring areas are formed at both ends of the first casting cavity 11 along the first direction, and the length direction of the plane wall 20 is the second direction, and two second monitoring areas are formed at both ends of the second casting cavity 21 along the second direction;

[0054] Step S200 includes:

[0055] Step A210: Install two first strain monitoring components at positions of the first inner cavity wall corresponding to the two first monitoring areas, and install two first strain monitoring components at positions of the first inner cavity wall corresponding to the two first monitoring areas.

[0056] Specifically, Figures 2 to 4 As shown, the first direction is Figure 2 The front-to-back direction in the second direction is Figure 2 In the left and right directions, the first casting cavity 11 forms two first monitoring areas along the length direction of the curved wall 10, and the second casting cavity 21 forms two second monitoring areas along the length direction of the plane wall 20. By respectively arranging two first strain monitoring components in the two first monitoring areas, the two ends of the first inner cavity wall along the length direction of the curved wall 10 can be monitored, and by respectively arranging two second strain monitoring components in the two second monitoring areas, the two ends of the second inner cavity wall along the length direction of the plane wall 20 can be monitored, and the monitoring is more comprehensive.

[0057] The present invention also proposes an experimental mold for pouring concrete in a steam generator compartment, which is applied to the experimental method for pouring concrete in a steam generator compartment as described above. The specific steps of the experimental method for pouring concrete in a steam generator compartment refer to the above embodiment. Since the experimental mold for pouring concrete in a steam generator compartment adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, a pouring port 30 for pouring concrete is opened at the top of the connection between the plane wall 20 and the curved wall 10, and the pouring port 30 is connected to the first pouring cavity 11 and the second pouring cavity 21.

[0058] Specifically, Figure 2 As shown, a pouring port 30 for pouring concrete is provided at the top of the connection between the plane wall 20 and the curved wall 10. Concrete can be poured into the first pouring cavity 11 and the second pouring cavity 21 through the pouring port 30, and pouring is simple and convenient.

[0059] In one embodiment, a plurality of spaced inclined steps 12 are formed on the curved wall 10 , each inclined step 12 protrudes toward a side away from the first casting cavity 11 to form an inclined surface, and a plurality of spaced straight steps 22 are provided on the plane wall 20 .

[0060] Specifically, Figure 2 As shown, a plurality of inclined steps 12 are provided on the curved wall 10 to simulate the influence of the inclined structure on the steam generator compartment, and a plurality of straight steps 22 are provided on the plane wall 20 to simulate the influence of structures with different cross-sectional sizes on the steam generator compartment. Various structures on the steam generator compartment are simulated by the curved wall 10, the plane wall 20 and the inclined steps 12 and the straight steps 22 thereon, so that the experimental mold proposed in the present invention integrates a variety of complex structures of different shapes and sizes, and better fits the complex geometric shape of the steam generator compartment, so that the experimental results of the concrete pouring of the steam generator compartment are closer to the actual working conditions of the steam generator compartment, and the accuracy of the experimental results is improved.

[0061] In one embodiment, the straight step 22 includes a plurality of first steps 221 and a plurality of second steps 222, each first step 221 protrudes outward along the length direction of the plane wall 20, and the protruding lengths of each first step 221 are different, and each second step 222 protrudes outward along the width direction of the plane wall 20, and the protruding lengths of each second step 222 are different.

[0062] See also Figure 2 , Figure 2 The left and right directions in the figure are the length directions of the plane wall 20. Figure 2The front-to-back direction is the width direction of the plane wall 20. Each first step 221 protrudes outward along the length direction of the plane wall 20, and the protrusion lengths of each first step 221 are different, so that the mechanical properties of structures of different lengths in the steam generator compartment are simulated by each first step 221. Each second step 222 protrudes outward along the width direction of the plane wall 20, and the protrusion lengths of each second step 222 are different, so that the mechanical properties of structures of different widths in the steam generator compartment are simulated by each second step 222. By combining multiple first steps 221 and multiple second steps 222, a variety of combined structures of different lengths and different widths can be formed, which is convenient for simulating various complex geometric shapes of different lengths and different widths, more accurately simulating the complexity and irregularity of the actual structure, and improving the accuracy of the experiment.

[0063] In one embodiment, the plurality of first steps 221 are arranged at intervals along the height direction of the plane wall 20 , and the protrusion lengths of the plurality of first steps 221 arranged at intervals decrease from top to bottom to form an inverted step shape.

[0064] Furthermore, if Figure 2 and Figure 3 As shown, the plurality of first steps 221 are in the shape of inverted steps, that is, the first step 221 located at the top has the longest protrusion length, and the first step 221 located at the bottom has the shortest protrusion length, so that each first step 221 is cantilevered relative to the first step 221 therebelow, thereby facilitating the simulation of protrusions of different lengths in the steam generator compartment.

[0065] In one embodiment, the plurality of inclined steps 12 are arranged at intervals along the height direction of the arc-shaped wall 10 , and the protruding lengths of the plurality of inclined steps 12 are different, and the inclination angles of the inclined surfaces are different.

[0066] Specifically, Figure 2 and Figure 3 As shown, each inclined step 12 protrudes outward and forms an edge extending in the height direction of the arc-shaped wall 10, so that two inclined surfaces are formed on both sides of the inclined step 12 relative to the edge, and the protrusion lengths of the edges of each inclined step 12 relative to the arc-shaped wall 10 are different, and the inclination angles of each inclined surface are different, so that multiple inclined steps 12 can simulate inclined structures with multiple different inclination angles. It can be explained that each inclined surface can be a straight surface or a curved surface, and the specific arrangement of each inclined surface depends on the actual structure of the steam generator compartment to be simulated.

[0067] In one embodiment, a plurality of embedded parts 23 of different sizes are arranged at intervals on the curved wall 10 or the plane wall 20 .

[0068] It should be noted that by providing embedded parts 23 of different sizes, the situation of embedded parts 23 on the steam generator compartment can be simulated, thereby further improving the accuracy of the experimental results.

[0069] In one embodiment, a hole 24 is formed on the plane wall 20 , and the hole 24 runs through the plane wall 20 in a width direction.

[0070] It can be understood that the hole 24 is located in the middle of the plane wall 20 and penetrates the plane wall 20 along the width direction. By providing the hole 24, the situation of having a hole in the steam generator compartment can be simulated, further improving the accuracy of the experimental results.

[0071] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An experimental method for pouring concrete in a steam generator compartment, characterized in that: The experimental method includes: An experimental mold is provided; wherein the experimental mold comprises an arc wall and a plane wall, a first casting cavity is formed in the arc wall, a second casting cavity is formed in the plane wall, the arc wall and the plane wall are arranged at an angle, and the first casting cavity is connected to the second casting cavity; Install a first strain monitoring component on a first inner cavity wall of the first casting cavity, and install a second strain monitoring component on a second inner cavity wall of the second casting cavity; pouring concrete of a preset height into both the first pouring cavity and the second pouring cavity; Waiting for a preset time, and obtaining the strain information of the first inner cavity wall within the preset time through each of the strain monitoring components, and obtaining the second strain information of the second inner cavity wall within the preset time through each of the second strain monitoring components; comparing the first strain information and the second strain information with a strain threshold; If the first strain information and the second strain information are both within the strain threshold, the preset height and the preset time meet the requirements; If the first strain information or the second strain information is not within the strain threshold, the preset height and the preset time do not meet the requirements.

2. The experimental method for pouring concrete in a steam generator compartment according to claim 1, characterized in that: The first strain monitoring assembly includes a plurality of first strain sensors, and the second strain monitoring assembly includes a plurality of second strain sensors; The steps of installing a first strain monitoring component on the first inner cavity wall of the first casting cavity and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity include: A plurality of first strain sensors are installed at intervals along the vertical direction on the first inner cavity wall, and a plurality of second strain sensors are installed at intervals along the vertical direction on the second inner cavity wall of the second casting cavity.

3. The experimental method for pouring concrete in a steam generator compartment according to any one of claims 1 to 2, characterized in that: The length direction of the curved wall is the first direction, and two first monitoring areas are formed at both ends of the first casting cavity along the first direction, respectively; the length direction of the plane wall is the second direction, and two second monitoring areas are formed at both ends of the second casting cavity along the second direction, respectively; The steps of installing a first strain monitoring component on the first inner cavity wall of the first casting cavity and installing a second strain monitoring component on the second inner cavity wall of the second casting cavity include: Two first strain monitoring components are respectively installed at positions of the first inner cavity wall corresponding to the two first monitoring areas, and two first strain monitoring components are respectively installed at positions of the first inner cavity wall corresponding to the two first monitoring areas.

4. An experimental mold for pouring concrete in a steam generator compartment, characterized in that: The experimental mold is applied to the experimental method for pouring concrete in the steam generator compartment as described in any one of claims 1 to 3; wherein a pouring port for pouring concrete is provided at the top of the connection between the plane wall and the curved wall, and the pouring port is connected to the first pouring cavity and the second pouring cavity.

5. The experimental mold for pouring concrete of the steam generator compartment according to claim 4, characterized in that: A plurality of spaced inclined steps are formed on the curved wall, each of the inclined steps protrudes toward a side away from the first casting cavity to form an inclined surface, and a plurality of spaced straight steps are arranged on the plane wall.

6. The experimental mold for pouring concrete of the steam generator compartment according to claim 5, characterized in that: The straight steps include a plurality of first steps and a plurality of second steps, each of the first steps protrudes outward along the length direction of the plane wall, and the protrusion lengths of each of the first steps are different, and each of the second steps protrudes outward along the width direction of the plane wall, and the protrusion lengths of each of the second steps are different.

7. The experimental mold for pouring concrete of the steam generator compartment according to claim 6, characterized in that: A plurality of the first steps are arranged at intervals along the height direction of the plane wall, and the protrusion lengths of the plurality of the first steps arranged at intervals decrease from top to bottom to form an inverted step shape.

8. The experimental mold for pouring concrete for a steam generator compartment according to claim 5, characterized in that: The plurality of inclined steps are arranged at intervals along the height direction of the arc-shaped wall, and the protruding lengths of the plurality of inclined steps are different, and the inclination angles of the inclined surfaces are different.

9. An experimental mould for pouring concrete for a steam generator compartment according to any one of claims 4 to 8, characterized in that: A plurality of embedded parts of different sizes are arranged at intervals on the arc wall or the plane wall.

10. An experimental mould for pouring concrete for a steam generator compartment according to any one of claims 4 to 8, characterized in that: The plane wall is provided with holes, and the holes penetrate the width direction of the plane wall.

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