CN115014995B - Method and device for estimating physical and mechanical parameters of third-series sand shale - Google Patents
Method and device for estimating physical and mechanical parameters of third-series sand shale Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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Abstract
The embodiment of the application provides a method and a device for estimating physical and mechanical parameters of a third-system sand shale, and relates to the technical field of geotechnical engineering. The method comprises the following steps: acquiring a first physical parameter and a second physical parameter of the sand shale to be measured; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale; and estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter or the second physical parameter. The method and the device are used for rapidly estimating various index parameters of the sand shale at the working point, so that the evaluation efficiency of the stability of the field site is improved.
Description
Technical Field
The application belongs to the technical field of geotechnical engineering, and particularly relates to a method and a device for estimating physical and mechanical parameters of a third-system sand shale, electronic equipment and a medium.
Background
The physical parameters of the third-system sand shale include physical indexes and mechanical indexes, wherein the physical indexes mainly comprise natural volume weight, water absorption and the like, and the mechanical indexes mainly comprise compressive strength, shear strength and the like. In order to meet the requirements of roadbed excavation and protection design, the physical and mechanical parameters of the third-system sand shale of the engineering site need to be estimated.
In the related art, there are two ways to determine the physical parameters of the sandstone and mudstone of the third system, one way is through indoor tests and in-situ tests on site, and the other way is based on empirical data estimation of the local or national homogeneous rock formations. However, the first method has many test projects and process flows, so the test period is long, the economic cost is high, and effective data cannot be provided in time during field investigation and even design. In the second mode, as the physical and mechanical properties of the sand shale of the third system are greatly different in different areas or different working points in the same area, the estimation effect according to the empirical data of the local area or the nationwide similar rock stratum is poor, the empirical data hardly truly reflect the physical and mechanical parameters of the sand shale at the working points, the estimation result deviation of engineers with different experiences is large, the influence on engineering design is large, and the field estimation efficiency is low.
Therefore, how to improve the evaluation efficiency of the stability of the field is a current urgent problem to be solved.
Disclosure of Invention
Based on the above, it is necessary to provide a method and a device for estimating physical and mechanical parameters of the third-system sand shale, an electronic device and a medium for improving the efficiency of estimating the stability of the field.
In a first aspect, an embodiment of the present application provides a method for estimating a physical and mechanical parameter of a third-system sand shale, where the method includes:
acquiring a first physical parameter and a second physical parameter of the sand shale to be measured; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale;
And estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter or the second physical parameter.
As an alternative embodiment of the present application, the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; the shear strength parameters include: cohesion and internal friction angle.
As an optional embodiment of the present application, the estimating the compressive strength parameter and the shear strength parameter of the to-be-measured sand shale according to the first physical parameter includes:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula = (45-65) E -0.03w to estimate internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the mudstone is expressed in degrees.
As an optional embodiment of the present application, the estimating the compressive strength parameter and the shear strength parameter of the to-be-measured sand shale according to the second physical parameter includes:
estimating the compressive strength of the sandstone according to a formula Q u1＝0.26ρ2 -11.9ρ+136.5;
Estimating the compressive strength of the mudstone according to a formula Q u2＝1.3ρ2 -48.7ρ+ 457.9;
Estimating cohesion according to the formula c=0.16ρ 2 -7.04 ρ+75.5;
According to the formula Let 3.25 ρ 2 -140 ρ+1541.5 estimate cohesion;
wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of sandstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
As an alternative embodiment of the present application, before acquiring the first physical parameter and the second physical parameter of the sand shale to be measured, the method further comprises:
dividing the sand shale to be measured according to the physical properties of the sand shale, and determining the type of the sand shale to be measured; the types of the sand shale include: sandstone and mudstone.
As an alternative embodiment of the present application, the physical properties of the sand shale include: color, composition, texture, and particle size.
In a second aspect, an embodiment of the present application provides an apparatus for estimating a physical and mechanical parameter of a sand shale of a third system, where the apparatus includes:
The acquisition module is used for acquiring a first physical parameter and a second physical parameter of the sand shale to be detected; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale;
And the estimation module is used for estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter or the second physical parameter.
As an alternative embodiment of the present application, the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; the shear strength parameters include: cohesion and internal friction angle.
As an optional embodiment of the present application, the obtaining module is specifically configured to:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula = (45-65) E -0.03w to estimate internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the mudstone is expressed in degrees.
As an optional embodiment of the present application, the obtaining module is further configured to:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula = (45-65) E -0.03w to estimate internal friction angle;
wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of sandstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
As an optional embodiment of the present application, the apparatus further includes a dividing module, where the dividing module is configured to:
dividing the sand shale to be measured according to the physical properties of the sand shale, and determining the type of the sand shale to be measured; the types of the sand shale include: sandstone and mudstone.
As an alternative embodiment of the present application, the physical properties of the sand shale include: color, composition, texture, and particle size.
In a third aspect, an embodiment of the present application provides an electronic device, including: a memory and a processor, the memory for storing a computer program; the processor is configured to execute the method for estimating the physical and mechanical parameters of the third-system sand shale according to the first aspect or any implementation manner of the first aspect when the computer program is invoked.
In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements the method for estimating a physical mechanical parameter of a third-system sand shale according to the first aspect or any implementation manner of the first aspect.
According to the estimation method of the physical and mechanical parameters of the third-system sand shale, the two physical parameters used for representing the water content of the sand shale and the natural volume weight of the sand shale are firstly obtained, and then the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the water content estimation, or the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the natural volume weight estimation. Because the two physical quantities of the water content and the natural volume weight are easy to obtain, and the compressive strength parameter and the shear strength parameter are estimated according to the water content or the natural volume weight, each index parameter of the sand shale at the working point can be estimated in the field, and the efficiency of the stability evaluation of the field can be improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a flow chart of a method for estimating physical and mechanical parameters of a tertiary sand mudstone according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an estimation apparatus for physical and mechanical parameters of a third-system sand shale according to an embodiment of the present application;
Fig. 3 is an internal structure diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the application will be more clearly understood, a further description of the application will be made. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the application.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.
In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion. Furthermore, in the description of the embodiments of the present application, unless otherwise indicated, the meaning of "plurality" means two or more.
The invention conception of the scheme is as follows: in order to rapidly estimate various index parameters of the sand shale at the working point in the field, the invention provides a third-system sand shale physical mechanical parameter estimation method based on an empirical formula, which is based on the following basic principle: based on a set of empirical formulas summarized by statistical achievements, the mechanical parameters are estimated in the field by using easily-obtained physical parameters, namely, the physical parameters such as water content, natural volume weight and the like are measured in the field, and the mechanical parameters such as compressive strength, shear strength and the like are estimated according to the empirical formulas, so that various index parameters of sandstone at a working point can be rapidly estimated in the field, and further, a basis is provided for rapid initial assessment of site stability.
The embodiment of the application provides an estimation method of physical and mechanical parameters of a third-system sand shale. Specifically, referring to fig. 1, the method for estimating physical and mechanical parameters of the third-system sand shale according to the embodiment of the present application includes the following steps S11 to S12:
S11, acquiring a first physical parameter and a second physical parameter of the sand shale to be measured.
The first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale.
Specifically, as the physical parameters of the sand shale are easier to determine, the mechanical parameters are as follows: the compression strength and the shear strength are obtained in a complex manner, so that the water content and the natural volume weight of the sand shale to be measured are firstly obtained. For example, the water content of the sandstone is generally measured by a drying method, and the water content= (weight before drying-weight after drying)/weight after drying is 100%.
Illustratively, the measured natural volume weight of the weathered sandstone is 25.3kN/m 3, and the natural volume weight of the strongly weathered mudstone is 24.18kN/m 3.
And S12, estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter or the second physical parameter.
In some embodiments, the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; shear strength parameters include: cohesion and internal friction angle.
In particular, rock strength generally includes compressive strength, tensile strength, shear strength, where shear strength and compressive strength are the primary factors in determining the stability of a rock project.
Wherein, compressive strength refers to the strength limit when external force is applied. The compressive strength of rock refers to the maximum pressure that can be sustained in the unbroken state and is understood to be the stress required to press the rock to fracture. The third system of sand shale has the characteristics of low strength, large lithology change, easy efflorescence and poor cementing condition. Shear strength is a fundamental parameter in the calculation of stability in rock mass engineering.
The cohesion, also called cohesion, of the sand mudstone is the mutual attraction between adjacent parts inside the same substance. Under the condition of effective stress, the total shear strength is subtracted by the friction strength, and the cohesive force is obtained. It is also understood that cohesion is the shear strength of the fracture surface without any positive stress.
The internal friction angle is one of shear strength indexes of the rock and reflects the internal friction force between particles in the rock. The greater the internal friction angle, the higher the strength. The internal friction angle is mechanically understood to be the critical self-stabilizing angle of the block on the inclined plane, within which the block is stable; above this angle, the block will slip. In this embodiment, the stability of the field site can be further analyzed using this principle.
According to the estimation method of the physical and mechanical parameters of the third-system sand shale, the two physical parameters used for representing the water content of the sand shale and the natural volume weight of the sand shale are firstly obtained, and then the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the water content estimation, or the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the natural volume weight estimation. Because the two physical quantities of the water content and the natural volume weight are easy to obtain, and the compressive strength parameter and the shear strength parameter are estimated according to the water content or the natural volume weight, each index parameter of the sand shale at the working point can be estimated in the field, and the efficiency of the stability evaluation of the field can be improved.
In some embodiments, estimating the compressive strength of the sandstone, the compressive strength of the mudstone, the cohesion and the internal friction angle of the mudstone to be measured according to the first physical parameter may be achieved by:
① . Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
② . Estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
③ . Estimating the cohesion according to the formula c= (550-750) e -0.25w;
④ . According to the formula = (45-65) E -0.03w to estimate internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the mudstone is expressed in degrees.
Specifically, the shear strength test method comprises two types of indoor tests and field tests. In general, in the indoor use of a press, a direct shear apparatus, a torsion apparatus and a triaxial apparatus, direct shear tests and triaxial tests are performed on site to determine strength parameters (cohesion and internal friction angle). The common methods for the indoor shear strength test comprise three types of direct shear tests, torsion tests and triaxial tests, wherein the direct shear tests are suitable for measuring the shear strength of a rock structural surface and a weak interlayer. In-situ direct shear tests are often used for weak rocks, structural surfaces or weak interlayers. The process of acquiring the compressive strength and shear strength parameters by the two test modes is complex, so that the efficiency of acquiring the parameters is low. Therefore, after the water content is rapidly measured on site, the compressive strength of sandstone, the compressive strength of mudstone, the cohesion and the internal friction angle can be calculated according to the four empirical formulas.
Illustratively, the estimation can be made according to the above formula: the compressive strength of the sandstone was 3.75M Pa, the strength of the mudstone was 0.56M Pa, the cohesion of the mudstone was 4.32M Pa, and the internal friction angle was 44.92 °.
In some embodiments, the estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the second physical parameter may be achieved by:
a. Estimating the compressive strength of the sandstone according to a formula Q u1＝0.26ρ2 -11.9ρ+136.5;
b. Estimating the compressive strength of the mudstone according to a formula Q u2＝1.3ρ2 -48.7ρ+ 457.9;
c. Estimating cohesion according to the formula c=0.16ρ 2 -7.04 ρ+75.5;
d. According to the formula Estimate internal friction angle=3.25ρ 2 -140ρ+ 1541.5;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
Specifically, after the natural volume weight is rapidly measured on site, the compressive strength of sandstone, the compressive strength of mudstone, the cohesive force and the internal friction angle can be calculated respectively according to the above empirical formula. Obviously, compared with the method for measuring the compressive strength and the shear strength one by one on site, the method saves time, is convenient for quickly estimating various index parameters of the sand shale at each working point, and further provides basis for quickly evaluating the site stability.
Illustratively, the estimation can be made according to the above formula: the compressive strength of sandstone is 36.75M Pa, the compressive strength of mudstone may be 1.954M Pa, the cohesion of the sand mudstone may be 0.116M Pa, and the internal friction angle may be 25.82 °.
In some embodiments, before performing step S11, the following steps may also be performed:
Dividing the sand shale to be measured according to the physical properties of the sand shale, and determining the type of the sand shale to be measured.
The types of the sand shale include: sandstone and mudstone.
Specifically, the sandstone and mudstone structures are sedimentary rocks composed of fine particles, the pores of the mudstone particles are small, and the coarse pores of the sandstone particles are large.
Sandstone: is formed from quartz particles (sand), is structurally stable, is usually pale brown or red in color, and contains mainly silicon, calcium, clay and iron oxide.
Mudstone: the mineral composition is complex, and mainly consists of clay minerals (such as hydromica, kaolinite, montmorillonite and the like), and then chipped minerals (quartz, feldspar, mica and the like), and metaminerals (such as green-curtain stone, chlorite and the like) and ferro-manganese substances and organic substances. The texture is soft, the consolidation degree is weaker than that of shale, and recrystallization is not obvious. Common types are:
① Calcareous mudstone. Contains a proper amount of calcium carbonate, and is commonly found in red rock formations and sedimentary rock formations in the ocean and lake phases.
② Iron mudstone. And contains a large amount of iron minerals such as hematite, limonite, goethite, etc., which are found in red rock formations.
③ Siliceous mudstone. The silicon dioxide has higher SiO2 content, does not contain or contains very little iron and carbonate substances, and is often associated with iron rock, silicalite and manganese rock. The mudstone has the performances of water absorption, adhesion, fire resistance and the like, and can be used for industries such as brick and tile making, ceramic making and the like.
In some embodiments, the physical properties of the sand mudstone include: color, composition, texture, and particle size.
Specifically, the oxidation environment or the reduction environment in the medium can be determined according to the color shade, brightness and darkness degree of the rock.
From the component, the main component of the sandstone is silt, and contains a small amount of clay minerals and cementing materials; the main component of mudstone is clay mineral, which contains a small amount of sand.
From the aspect of particle size, the sandstone structure is granular, the water permeability is good, and the grain size of sand grains is 1/16-2mm; the mudstone is one of clay rocks, which is formed by clay substances through compaction, dehydration and recrystallization, and consists of tiny minerals with the grain size of 1/256mm, has lamellar or lamellar layering, is easy to crack into fragments when being hit by hard objects, and has poor water permeability.
From the aspect of hand feeling texture, the fracture of the sandstone is coarser than that of the mudstone, the sand feeling of the sandstone is stronger, and the mudstone is finer.
Through the embodiment, the third-system sandstone and mudstone can be effectively distinguished, and the physical parameters are rapidly measured on site, so that reasonable preparation is provided for mechanical parameter estimation. Furthermore, the foundation can be provided for roadbed excavation and protection design through the estimated mechanical parameters of the third-system sand shale, so that preliminary engineering mechanical parameters can be provided for rapid field evaluation of engineering sites.
According to the estimation method of the physical and mechanical parameters of the third-system sand shale, the two physical parameters used for representing the water content of the sand shale and the natural volume weight of the sand shale are firstly obtained, and then the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the water content estimation, or the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the natural volume weight estimation. Because the two physical quantities of the water content and the natural volume weight are easy to obtain, and the compressive strength parameter and the shear strength parameter are estimated according to the water content or the natural volume weight, each index parameter of the sand shale at the working point can be estimated in the field, and the efficiency of the stability evaluation of the field can be improved.
The embodiment of the application provides an estimation device of physical and mechanical parameters of a third-system sand shale, which is used for executing any of the estimation methods of the physical and mechanical parameters of the third-system sand shale provided by the embodiment, and has the corresponding beneficial effects of the estimation method of the physical and mechanical parameters of the third-system sand shale.
Fig. 2 is a schematic structural diagram of a third system sand shale physical and mechanical parameter estimation device according to an embodiment of the present application, where, as shown in fig. 2, the third system sand shale physical and mechanical parameter estimation device includes: an acquisition module 210 and an estimation module 220.
An obtaining module 210, configured to obtain a first physical parameter and a second physical parameter of the sand shale to be tested; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale;
And the estimation module 220 is configured to estimate a compressive strength parameter and a shear strength parameter of the to-be-measured mudstone according to the first physical parameter or the second physical parameter.
As an alternative embodiment of the present application, the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; the shear strength parameters include: cohesion and internal friction angle.
As an optional embodiment of the present application, the obtaining module 210 is specifically configured to:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula = (45-65) E -0.03w to estimate internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the mudstone is expressed in degrees.
As an optional embodiment of the present application, the obtaining module 210 is further configured to:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula = (45-65) E -0.03w to estimate internal friction angle;
wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of sandstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
As an optional embodiment of the present application, the apparatus further includes a dividing module, where the dividing module is configured to:
dividing the sand shale to be measured according to the physical properties of the sand shale, and determining the type of the sand shale to be measured; the types of the sand shale include: sandstone and mudstone.
As an alternative embodiment of the present application, the physical properties of the sand shale include: color, composition, texture, and particle size.
According to the estimation device for the physical and mechanical parameters of the third-system sand shale, the two physical parameters for representing the water content of the sand shale and for representing the natural volume weight of the sand shale are firstly obtained, and then the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the water content estimation, or the compression strength parameter and the shear strength parameter of the sand shale to be detected are estimated based on the natural volume weight estimation. Because the two physical quantities of the water content and the natural volume weight are easy to obtain, and the compressive strength parameter and the shear strength parameter are estimated according to the water content or the natural volume weight, each index parameter of the sand shale at the working point can be estimated in the field, and the efficiency of the stability evaluation of the field can be improved.
For specific limitations on the estimation device of the physical and mechanical parameters of the third-line sand shale, reference may be made to the above limitation on the estimation method of the physical and mechanical parameters of the third-line sand shale, which is not described herein. The above-mentioned estimation device of physical and mechanical parameters of the third-system sand shale can be implemented by all or part of software, hardware and their combination. The above modules may be embedded in hardware or independent of a processor in the electronic device, or may be stored in software in a memory in the electronic device, so that the processor may call and execute operations corresponding to the above modules.
The embodiment of the disclosure also provides an electronic device, and fig. 3 is a schematic structural diagram of the electronic device provided by the embodiment of the disclosure. As shown in fig. 3, the electronic device provided in this embodiment includes: a memory 31 and a processor 32, the memory 31 for storing a computer program; the processor 32 is configured to execute the steps executed by any one of the embodiments of the method for estimating physical and mechanical parameters of the sandstone and mudstone provided in the method embodiments described above when the computer program is invoked. The electronic device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The computer program, when executed by the processor, implements a method for estimating physical and mechanical parameters of the sand shale of the third system. The display screen of the electronic equipment can be a liquid crystal display screen or an electronic ink display screen, the input device of the electronic equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 3 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the electronic device to which the present inventive arrangements are applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the estimation device of the physical and mechanical parameters of the sand shale of the third system provided by the application can be implemented as a form of a computer program, and the computer program can be run on an electronic device as shown in fig. 3. The memory of the electronic device may store various program modules of the estimation device of the physical and mechanical parameters of the sand shale of the third system of the electronic device, such as the acquisition module 210 and the estimation module 220 shown in fig. 2. The computer program comprising the respective program modules causes the processor to carry out the steps of the method for estimating the physical and mechanical parameters of the third-series sand shale of the electronic equipment according to the respective embodiments of the application described in the present specification.
For example, the electronic device shown in fig. 3 may perform step S11 through the acquisition module 210 in the estimation device of the physical and mechanical parameters of the tertiary sand mudstone as shown in fig. 2. The electronic device may perform step S12 through the estimation module 220.
In one embodiment, there is also provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static random access memory (Static Random Access Memory, SRAM), dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (5)
1. A method for estimating physical and mechanical parameters of a third-system sand shale, the method comprising:
Dividing the sand shale to be measured according to the physical properties of the sand shale, and determining the type of the sand shale to be measured; the types of the sand shale include: sandstone and mudstone;
acquiring a first physical parameter and a second physical parameter of the sand shale to be measured; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale;
estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter or the second physical parameter; the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; the shear strength parameters include: cohesion and internal friction angle;
the estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the first physical parameter comprises the following steps:
Estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula Estimating an internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees;
The estimating the compressive strength parameter and the shear strength parameter of the sand shale to be measured according to the second physical parameter comprises the following steps:
estimating the compressive strength of the sandstone according to a formula Q u1＝0.26ρ2 -11.9ρ+136.5;
Estimating the compressive strength of the mudstone according to a formula Q u2＝1.3ρ2 -48.7ρ+ 457.9;
Estimating cohesion according to the formula c=0.16ρ 2 -7.04 ρ+75.5;
According to the formula Estimating an internal friction angle;
wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of sandstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
2. The method of claim 1, wherein the physical properties of the sand shale include: color, composition, texture, and particle size.
3. An estimation device of physical and mechanical parameters of a third-system sand shale is characterized by comprising:
The division module is used for dividing the sand shale to be detected according to the physical properties of the sand shale, and determining the type of the sand shale to be detected; the types of the sand shale include: sandstone and mudstone;
The acquisition module is used for acquiring a first physical parameter and a second physical parameter of the sand shale to be detected; the first physical parameter is used for representing the water content of the sand shale, and the second physical parameter is used for representing the natural volume weight of the sand shale;
The estimation module is used for estimating the compressive strength parameter and the shear strength parameter of the sand shale to be detected according to the first physical parameter or the second physical parameter; the compressive strength parameters include: compressive strength of sandstone and compressive strength of mudstone; the shear strength parameters include: cohesion and internal friction angle;
The estimation module is used for estimating the compressive strength of the sandstone according to a formula Q u1＝(10～20)e-0.16w;
estimating the compressive strength of the mudstone according to a formula Q u2＝(80～100)e-0.25w;
Estimating the cohesion according to the formula c= (550-750) e -0.25w;
According to the formula Estimating an internal friction angle;
Wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of mudstone, and the unit is M Pa; w represents the water content, the unit is; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees;
estimating the compressive strength of the sandstone according to a formula Q u1＝0.26ρ2 -11.9ρ+136.5;
Estimating the compressive strength of the mudstone according to a formula Q u2＝1.3ρ2 -48.7ρ+ 457.9;
Estimating cohesion according to the formula c=0.16ρ 2 -7.04 ρ+75.5;
According to the formula Estimating an internal friction angle;
wherein, Q u1 represents the compressive strength of sandstone, Q u2 represents the compressive strength of sandstone, and the unit is M Pa; c represents the cohesion of the sandstone, the unit being M Pa; The internal friction angle of the sand shale is expressed in degrees; ρ represents the natural bulk weight in kN/m 3.
4. A computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method of estimating a physical mechanical parameter of a tertiary sand shale according to any of claims 1 to 2.
5. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the method of estimating the physical mechanical parameters of the tertiary sand mudstone according to any one of claims 1 to 2.
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