Method and system for calculating sediment pressure in salt cavern

Abstract

The invention discloses a method and a system for calculating sediment pressure in a salt cavern. The method comprises the following steps: dividing a salt cavern cavity form containing a sediment part; determining the distribution of a corresponding cavity wall side pressure coefficient along with the depth according to the cavity form, wherein the cavity wall side pressure coefficient is the ratio of the normal supporting force to the vertical stress of the cavity wall; constructing a sediment mechanical model at any depth in the salt cavern cavity containing the sediment part, and carrying out mechanical equilibrium analysis; and calculating the vertical pressure of the sediment at different depths in the cavity according to the cavity form, the distribution of the cavity wall side pressure coefficient along with the depth and the sediment mechanical model at any depth in the cavity. The method can adapt to different salt cavern forms and sediment distribution, cover conical, spherical and mixed cavity types, support different sediment accumulation scenes, accurately calculate the pressure of the sediment on the cavity wall, facilitate better understanding of the stress condition in the salt cavern energy storage reservoir, and have important significance for ensuring the long-term stability of the salt cavern energy storage reservoir.

Description

Technical Field

[0001] The present invention relates to the technical field of salt cavern energy storage, and in particular to a method and system for calculating sediment pressure in a salt cavern. Background Art

[0002] As global energy demand continues to rise, renewable energy sources such as wind and solar power are experiencing widespread adoption, significantly driving the rapid development of energy storage technology. Salt caverns, with their high efficiency and low cost, are widely used as high-quality underground gas and energy storage facilities for storing natural gas, compressed air, hydrogen, and other gases. They play a crucial role in energy scheduling and storage.

[0003] During the water-soluble cavern formation process, the large amount of insoluble impurities and interlayers of varying thickness within the salt ore can cause expansion or collapse, resulting in the accumulation of sediment at the bottom of the cavern. The presence of sediment has significant drawbacks. It not only reduces the storage efficiency of the reservoir but can also lead to problems such as difficulty in controlling the cavern morphology and blockage of well pipes. Furthermore, due to the difficulty of actual surveys, the specific form and nature of sediment accumulation within the salt cavern cavity remain uncertain. However, sediment does contribute to the stability of the salt cavern cavity to a certain extent. Therefore, accurately calculating the pressure exerted by sediment on the cavern wall is crucial to ensuring the long-term stability of the salt cavern energy storage reservoir.

[0004] Currently, methods for calculating sediment pressure are scarce. While commonly used numerical simulation methods can analyze pressure distribution within a cavity, they are complex and time-consuming, and lack adaptability to different cavity shapes and sediment distributions. Therefore, a simpler and more accurate method for calculating sediment pressure is urgently needed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a method and system for calculating sediment pressure in salt caverns, so as to solve the technical problems in the prior art of calculating sediment pressure, such as scarcity of methods, complex and time-consuming calculation process, and poor adaptability to different cavity shapes and sediment distributions.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] The present invention provides a method for calculating sediment pressure in a salt cavern, comprising:

[0008] S1, the morphology of the salt cavern cavity that divides the sediment-containing part;

[0009] S2, determining the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape, wherein the cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress;

[0010] S3, constructing a sediment mechanical model at any depth in the salt cavern cavity containing the sediment and performing mechanical equilibrium analysis;

[0011] S4, calculating the vertical pressure of the sediment at different depths in the cavity according to the cavity shape, the distribution of the pressure coefficient on the cavity wall side with depth, and the sediment mechanical model at any depth in the cavity.

[0012] In some embodiments, the salt cavern cavity morphology in S1 includes four types: conical, spherical, cylindrical-conical, and cylindrical-spherical; wherein:

[0013] The cylindrical-conical cavity morphology has a cylindrical upper portion and a conical lower portion;

[0014] The cylindrical-spherical cavity morphology has a cylindrical upper portion and a spherical lower portion.

[0015] In some embodiments, the method for determining the value of the cavity wall side pressure coefficient k in S2 includes the following situations:

[0016] Case 1: When the sediment is located in the conical part of a cone or a cylindrical-conical shape, k is calculated as follows:

[0017]

[0018] Where α is the angle between the cavity wall and the horizontal plane;

[0019] Case 2: When the sediment is located in the spherical part of a sphere or a cylindrical-spherical shape, k varies with the depth z from the bottom of the sediment and is calculated according to the following formula:

[0020]

[0021] Where R is the radius of the spherical cavity;

[0022] Case 3: When the sediment is located in the cylindrical part of the cylinder-cone or cylinder-sphere, the value of k ranges from 0.4 to 0.6.

[0023] In some embodiments, when the cavity wall is a horizontal plane, k=1; when the cavity wall is a vertical plane, k=0.5.

[0024] In some embodiments, the mechanical model is based on the following assumptions:

[0025] The vertical pressure of sediment on the same horizontal surface is equal;

[0026] Sediment is incompressible;

[0027] The friction and support force of the cavity wall on the sediment are proportional to the vertical pressure.

[0028] In some embodiments, the calculation formula for the vertical pressure of the sediment in S4 is divided into the following cases according to the cavity shape:

[0029] Case 1: For the conical or cylindrical-conical conical part, the vertical pressure of the sediment is calculated according to the following formula:

[0030]

[0031] Among them, σ v is the vertical pressure of sediment at a certain depth; h0 is the depth from the sediment surface to the bottom, z is the depth of the current sediment to the bottom of the sediment, σ v0 is the initial vertical pressure at the top of the conical part. When the sediment is only distributed in the conical part cavity, σ v0 When σ is 0, there is a cylindrical cavity above the conical cavity and it contains sediment. v0 is the vertical pressure of the sediment at the bottom of the cylindrical cavity, ρ is the sediment density, g is the acceleration of gravity, and n is determined by the following formula:

[0032]

[0033] Wherein, μ is the friction coefficient of the cavity wall;

[0034] Case 2: For a spherical or cylindrical-spherical part, σ v Calculate as follows:

[0035]

[0036] Where R is the radius of the spherical cavity;

[0037] Case 3: For the cylindrical part of a cylinder-cone or cylinder-sphere, σ v Calculated according to the formula:

[0038] Here, Z1 is the height of the cylindrical part of the cylinder-cone or cylinder-sphere.

[0039] In some embodiments, when the sediment is distributed only in the conical cavity, σ v = 0; when there is a cylindrical cavity containing sediment above the conical cavity, σ v is the vertical pressure of sediment at the bottom of the cylindrical cavity.

[0040] In some embodiments, the method for calculating the sediment pressure in the salt cave further includes calculating the pressure σ of the sediment on the cavity wall according to the following formula: w :

[0041] σ w =kσ v

[0042] Where k is the pressure coefficient on the cavity wall, σv is the vertical pressure of sediment at the corresponding depth.

[0043] The present invention also provides a system for calculating sediment pressure in a salt cavern, which is characterized by comprising:

[0044] Salt cavern cavity morphology module, which is used to divide the morphology of the salt cavern cavity containing sediment;

[0045] A cavity wall side pressure coefficient determination module, which is used to determine the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape. The cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress;

[0046] Sediment mechanics model construction module, which is used to construct a sediment mechanics model at any depth in the salt cavern cavity containing the sediment part and perform mechanical equilibrium analysis;

[0047] The sediment vertical pressure calculation module is used to calculate the sediment vertical pressure at different depths in the cavity according to the cavity shape, the distribution of the cavity wall side pressure coefficient with depth, and the sediment mechanical model at any depth in the cavity.

[0048] The present invention also provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the steps in the method for calculating the sediment pressure in the salt cavern.

[0049] Compared with the existing technology, the beneficial effects of the method for calculating sediment pressure in salt caverns provided by the present invention are: by standardizing the cavity morphology and lateral pressure coefficient rules, the grid division and iterative calculation required for traditional numerical simulation are avoided, and the calculation time is greatly shortened; at the same time, this technical solution can adapt to different salt cavern morphologies and sediment distributions, covering conical, spherical and mixed cavity types, supporting different sediment accumulation scenarios, and accurately calculating the pressure of sediment on the cavity wall, which helps to better understand the stress conditions in salt cavern energy storage reservoirs. It is of great significance for ensuring the long-term stability of salt cavern energy storage reservoirs, thereby promoting salt caverns to play a more reliable role in fields such as energy scheduling and storage, and improving the level of energy storage technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 1 is a flow chart of a method for calculating sediment pressure in a salt cavern provided by one embodiment of the present invention;

[0051] Figure 2 This is a morphological division diagram of the salt cavern cavity containing the sediment part;

[0052] Figure 3 is a diagram showing calculation results of the k value in a specific embodiment;

[0053] Figure 4 It is a mechanical model of a cylindrical cavity containing sediment established in a specific embodiment;

[0054] Figure 5 It is a mechanical model of a spherical cavity containing sediment established in a specific embodiment;

[0055] Figure 6 This is a diagram showing the calculation results of the sediment pressure when the sediment is located in a spherical cavity in a specific embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0057] In order to solve the technical problems in the existing technology of scarce methods for calculating sediment pressure, complex and time-consuming calculation process, and poor adaptability to different cavity shapes and sediment distributions, the present invention provides a method for calculating sediment pressure in salt caverns, which can efficiently and accurately calculate the pressure of sediment on the cavity wall in the salt cavern.

[0058] See also Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for calculating sediment pressure in a salt cavern according to an embodiment of the present invention. The method for calculating sediment pressure in a salt cavern includes:

[0059] S1, the morphology of the salt cavern cavity that divides the sediment-containing part;

[0060] like Figure 2 As shown, the salt cavern morphology in S1 includes four types: conical, spherical, cylindrical-conical and cylindrical-spherical; among which:

[0061] The cylindrical-conical cavity morphology has a cylindrical upper portion and a conical lower portion;

[0062] The cylindrical-spherical cavity morphology has a cylindrical upper portion and a spherical lower portion.

[0063] S2, determining the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape, wherein the cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress;

[0064] The method for determining the value of the cavity wall pressure coefficient k in S2 includes the following situations:

[0065] Case 1: When the sediment is located in the conical part of a cone or a cylindrical-conical shape, k is calculated as follows:

[0066]

[0067] Where α is the angle between the cavity wall and the horizontal plane;

[0068] Case 2: When the sediment is located in the spherical part of a sphere or a cylindrical-spherical shape, k varies with the depth z from the bottom of the sediment and is calculated according to the following formula:

[0069]

[0070] Where R is the radius of the spherical cavity;

[0071] Case 3: When the sediment is located in the cylindrical part of the cylinder-cone or cylinder-sphere, the value of k ranges from 0.4 to 0.6, and 0.5 is uniformly taken in this study.

[0072] When the cavity wall is a horizontal plane, k=1; when the cavity wall is a vertical plane, k=0.5.

[0073] S3, constructing a sediment mechanical model at any depth in the salt cavern cavity containing the sediment and performing mechanical equilibrium analysis;

[0074] The mechanical model is based on the following assumptions:

[0075] The vertical pressure of sediment on the same horizontal surface is equal;

[0076] Sediment is incompressible;

[0077] The friction and support force of the cavity wall on the sediment are proportional to the vertical pressure.

[0078] S4, calculating the vertical pressure of the sediment at different depths in the cavity according to the cavity shape, the distribution of the pressure coefficient on the cavity wall side with depth, and the sediment mechanical model at any depth in the cavity.

[0079] The calculation formula of the vertical pressure of the sediment in S4 is divided into the following cases according to the cavity shape:

[0080] Case 1: For the conical or cylindrical-conical conical part, the vertical pressure of the sediment is calculated according to the following formula:

[0081]

[0082] Among them, σ v is the vertical pressure of sediment at a certain depth; h0 is the depth from the sediment surface to the bottom, z is the depth of the current sediment to the bottom of the sediment, σ v0 is the initial vertical pressure at the top of the conical part. When the sediment is only distributed in the conical part cavity, σ v0 When σ is 0, there is a cylindrical cavity above the conical cavity and it contains sediment. v0 is the vertical pressure of the sediment at the bottom of the cylindrical cavity, ρ is the sediment density, g is the acceleration of gravity, and n is determined by the following formula:

[0083]

[0084] Wherein, μ is the friction coefficient of the cavity wall;

[0085] Case 2: For a spherical or cylindrical-spherical part, σ v Calculate as follows:

[0086]

[0087] Where R is the radius of the spherical cavity;

[0088] Case 3: For the cylindrical part of a cylinder-cone or cylinder-sphere, σ v Calculated according to the formula:

[0089]

[0090] Here, Z1 is the height of the cylindrical part of the cylinder-cone or cylinder-sphere.

[0091] When the sediment is only distributed in the conical cavity, σ v = 0; when there is a cylindrical cavity containing sediment above the conical cavity, σ v is the vertical pressure of sediment at the bottom of the cylindrical cavity.

[0092] The method for calculating the sediment pressure in the salt cave further includes calculating the pressure σ of the sediment on the cavity wall according to the following formula: w :

[0093] σ w =kσ v

[0094] Where k is the pressure coefficient on the cavity wall, σ v is the vertical pressure of sediment at the corresponding depth.

[0095] The present invention also provides a system for calculating sediment pressure in a salt cavern, which is characterized by comprising:

[0096] Salt cavern cavity morphology module, which is used to divide the morphology of the salt cavern cavity containing sediment;

[0097] A cavity wall side pressure coefficient determination module, which is used to determine the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape. The cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress;

[0098] Sediment mechanics model construction module, which is used to construct a sediment mechanics model at any depth in the salt cavern cavity containing the sediment part and perform mechanical equilibrium analysis;

[0099] The sediment vertical pressure calculation module is used to calculate the sediment vertical pressure at different depths in the cavity according to the cavity shape, the distribution of the cavity wall side pressure coefficient with depth, and the sediment mechanical model at any depth in the cavity.

[0100] The present invention also provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the steps in the method for calculating the sediment pressure in the salt cavern.

[0101] The specific use of this technical solution is described below based on specific embodiments:

[0102] The following takes a chamber containing sediment as an example to further illustrate the effectiveness of the technical method and to explain the implementation of the present invention as follows:

[0103] S1, the morphology of the salt cavern cavity that divides the sediment-containing part;

[0104] In this embodiment, the division is performed by taking a cylindrical-spherical cavity as an example.

[0105] S2, calculate the corresponding parameter k according to the cavity morphology;

[0106] Furthermore, the upper portion of the cylindrical-spherical cavity is cylindrical, and the value of k is generally in the range of 0.4 to 0.6, and is 0.5 in this embodiment; the lower portion of the cylindrical-spherical cavity is spherical, and the value of k is determined as follows:

[0107]

[0108] The calculated k value is as follows Figure 3 shown.

[0109] S3, taking a sediment layer at a certain depth to construct a mechanical model and perform mechanical equilibrium analysis;

[0110] Reference to the established mechanical model of the cylindrical cavity containing sediment Figure 4 , the following equilibrium equation can be listed:

[0111]

[0112] Among them, A s is the cross-sectional area of ​​the sediment; ρ s is the density of the sediment; g is the acceleration of gravity; dz is the height of the sediment microlayer; σ v is the pressure on the upper surface of the sediment microlayer; dσ v is the pressure change of the sediment microlayer; R is the radius of the cylinder; τ w is the friction force between the cavity wall and the sediment.

[0113] In the above formula, the left side of the equation indicates that the downward force on the sediment microlayer includes the sediment's own gravity (A s ρ s gdz) and the combined pressure from the sediment above (A s σ v ); The right side of the equation shows that the upward force on the sediment microlayer includes the friction between the sediment and the salt cavern wall (2A s τ w d z / R) and the combined support force from the sediment below (A s (σ v +dσ v )).

[0114] After simplification, we can get the equation:

[0115]

[0116] Solving the above formula can obtain the sediment pressure in the cylindrical cavity.

[0117] The mechanical model of the spherical cavity containing sediment is established Figure 5 , the following equilibrium equation can be listed:

[0118]

[0119] Among them, A s is the cross-sectional area of ​​the sediment; dA s is the change in the cross-sectional area of ​​the sediment; ρ s is the density of the sediment; g is the acceleration of gravity; dz is the height of the sediment microlayer; σ v is the pressure on the upper surface of the sediment microlayer; dσ v is the pressure change of the sediment microlayer; τ w is the friction between the cavity wall and the sediment; L w is the perimeter of the sediment microlayer.

[0120] In the above formula, the left side of the equation indicates that the downward force on the sediment microlayer includes the sediment's own gravity ((A s +1 / 2dA s )ρ s gdz) and the combined pressure from the sediment above ((A s +dA s )(σ v +dσ v )); The right side of the equation shows that the upward force on the sediment microlayer includes the friction between the sediment and the salt cavern wall (τ w sinαL w d z / sinα), the total support force from the sediment below (As σ v ) and the supporting force of the cavity wall on the sediment (σ w cosαL w d z / sinα).

[0121] According to the geometric relationship, the following equation is obtained:

[0122] L w =2πRsinα

[0123] A s =πR 2 sin 2 α

[0124] According to the force relationship, the following equation is obtained:

[0125] σ w =kσ v

[0126] τ w =μσ w

[0127] Furthermore, the relationship between α and z is determined:

[0128]

[0129] Substituting the known conditions, the equilibrium equation is as follows:

[0130]

[0131] Solving the equation can give the calculation formula for the sediment pressure.

[0132] S4, calculate the sediment pressure at different depths in the cavity.

[0133] The parameters of the cavity containing the sediment and the parameters of the sediment are shown in Table 1:

[0134] Table 1 Cavity shape and sediment parameters

[0135]

[0136] Substituting the parameters into the formula, the distribution of sediment pressure with depth can be calculated, such as Figure 6This figure shows that within a "cylindrical-spherical" salt cavern with a total sediment height of 70 meters and containing both cylindrical and spherical shapes, sediment pressure generally increases with sediment depth. However, approximately 5 meters from the cavern bottom, sediment pressure gradually decreases with depth, reaching a maximum pressure of approximately 0.5 MPa. This indicates that sediment improves the stability of the salt cavern energy storage reservoir to a certain extent, and this stability-enhancing effect is greater at deeper sediment depths.

[0137] The beneficial effects of the technical solution provided by the present invention include:

[0138] (1) By standardizing the cavity shape and lateral pressure coefficient rules, the grid division and iterative calculation required for traditional numerical simulation are avoided, and the calculation time is greatly shortened.

[0139] (2) The adaptability of morphology and sediment distribution is enhanced, covering conical, spherical and mixed cavity types, and supporting different sediment accumulation scenarios.

[0140] (3) Only the cavity geometry parameters (such as radius, inclination angle), sediment density, friction coefficient and other easily accessible parameters need to be input to quickly output the pressure distribution, which is suitable for on-site engineer operation.

[0141] (4) By distinguishing vertical pressure from cavity wall pressure, the mechanical effects of sediment on the cavity in different directions can be clarified, providing a reliable basis for salt cavern expansion design or risk warning.

[0142] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A method for calculating sediment pressure in a salt cavern, characterized in that: include: S1, the morphology of the salt cavern cavity that divides the sediment-containing part; S2, determining the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape, wherein the cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress; S3, constructing a sediment mechanical model at any depth in the salt cavern cavity containing the sediment and performing mechanical equilibrium analysis; S4, calculating the vertical pressure of the sediment at different depths in the cavity according to the cavity shape, the distribution of the pressure coefficient on the cavity wall side with depth, and the sediment mechanical model at any depth in the cavity.

2. The method for calculating sediment pressure in a salt cavern according to claim 1, characterized in that: The salt cavern morphologies in S1 include four types: conical, spherical, cylindrical-conical, and cylindrical-spherical; among which: The cylindrical-conical cavity morphology has a cylindrical upper portion and a conical lower portion; The cylindrical-spherical cavity morphology has a cylindrical upper portion and a spherical lower portion.

3. The method for calculating sediment pressure in a salt cavern according to claim 1, characterized in that: The method for determining the value of the cavity wall pressure coefficient k in S2 includes the following situations: Case 1: When the sediment is located in the conical part of a cone or a cylindrical-conical shape, k is calculated as follows: Where α is the angle between the cavity wall and the horizontal plane; Case 2: When the sediment is located in the spherical part of a sphere or a cylindrical-spherical shape, k varies with the depth z from the bottom of the sediment and is calculated according to the following formula: Where R is the radius of the spherical cavity; Case 3: When the sediment is located in the cylindrical part of the cylinder-cone or cylinder-sphere, the value of k ranges from 0.4 to 0.

6.

4. The method for calculating sediment pressure in a salt cavern according to claim 3, characterized in that: When the cavity wall is a horizontal plane, k=1; when the cavity wall is a vertical plane, k=0.

5.

5. The method for calculating sediment pressure in a salt cavern according to claim 1, characterized in that: The mechanical model is based on the following assumptions: The vertical pressure of sediment on the same horizontal surface is equal; Sediment is incompressible; The friction and support force of the cavity wall on the sediment are proportional to the vertical pressure.

6. The method for calculating sediment pressure in a salt cavern according to claim 3, characterized in that: The calculation formula of the vertical pressure of the sediment in S4 is divided into the following cases according to the cavity shape: Case 1: For the conical or cylindrical-conical conical part, the vertical pressure of the sediment is calculated according to the following formula: Among them, σ v is the vertical pressure of sediment at a certain depth; h0 is the depth from the sediment surface to the bottom, z is the depth of the current sediment to the bottom of the sediment, σ v0 is the initial vertical pressure at the top of the conical part. When the sediment is only distributed in the conical part cavity, σ v0 When σ is 0, there is a cylindrical cavity above the conical cavity and it contains sediment. v0 is the vertical pressure of the sediment at the bottom of the cylindrical cavity, ρ is the sediment density, g is the acceleration of gravity, and n is determined by the following formula: Wherein, μ is the friction coefficient of the cavity wall; Case 2: For a spherical or cylindrical-spherical part, σ v Calculate as follows: Where R is the radius of the spherical cavity; Case 3: For the cylindrical part of a cylinder-cone or cylinder-sphere, σ v Calculated according to the formula: Here, Z1 is the height of the cylindrical part of the cylinder-cone or cylinder-sphere.

7. The method for calculating sediment pressure in a salt cavern according to claim 6, characterized in that: When the sediment is only distributed in the conical cavity, σ v = 0; when there is a cylindrical cavity containing sediment above the conical cavity, σ v is the vertical pressure of sediment at the bottom of the cylindrical cavity.

8. The method for calculating sediment pressure in a salt cavern according to claim 1, characterized in that: It further includes calculating the pressure σ of the sediment on the cavity wall according to the following formula: w : s w =kσ v Where k is the pressure coefficient on the cavity wall, σ v is the vertical pressure of sediment at the corresponding depth.

9. A system for calculating sediment pressure in a salt cavern, characterized in that: include: Salt cavern cavity morphology module, which is used to divide the morphology of the salt cavern cavity containing sediment; A cavity wall side pressure coefficient determination module, which is used to determine the distribution of the corresponding cavity wall side pressure coefficient with depth according to the cavity shape. The cavity wall side pressure coefficient is the ratio of the cavity wall normal support force to the vertical stress; Sediment mechanics model construction module, which is used to construct a sediment mechanics model at any depth in the salt cavern cavity containing the sediment part and perform mechanical equilibrium analysis; The sediment vertical pressure calculation module is used to calculate the sediment vertical pressure at different depths in the cavity according to the cavity shape, the distribution of the cavity wall side pressure coefficient with depth, and the sediment mechanical model at any depth in the cavity.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the method for calculating the sediment pressure in the salt cavern according to any one of claims 1 to 8.

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