Correction method and correction device for porosity distribution curve of geotechnical material

Abstract

The invention provides a method and a device for correcting a porosity distribution curve of a geotechnical material, and the method comprises the following steps: obtaining the actual porosity n0 of a soil body sample, measuring the porosity distribution curve n (r) of the soil body sample about the aperture r by using a mercury intrusion method, and measuring the actually measured porosity n of the soil body sample, and establishing a calculation formula of the porosity nleakage (r) of the leak-measured pores of the soil body sample when the pore diameter is r based on the parameters, solving unknown numbers by using a formula # imgabs0 # dr, and finally obtaining a corrected porosity distribution curve n1 (r) = n (r) + nleakage (r). According to the method for correcting the porosity distribution curve of the geotechnical material, provided by the invention, the corrected porosity distribution curve is obtained by adding the porosity distribution curve measured by the mercury intrusion method and the porosity which is not measured, so that the porosity distribution curve measured by the mercury intrusion method can be rapidly corrected, and the accuracy of porosity distribution is improved.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering, and in particular to a correction method and a correction device for a porosity distribution curve of a geotechnical material. Background Art

[0002] The microstructure and evolution of rock and soil directly affect its permeability and mechanical properties. Therefore, how to accurately measure the pore size distribution of rock and soil is a very important task in geotechnical engineering.

[0003] At present, mercury injection testing is the most widely used method to test the pore size distribution of geotechnical materials. The mercury injection method has a wide range of pore sizes and the test results are easy to obtain. It can be well used to study the microstructural changes of clay under complex environmental loads. It is widely used to analyze the influence of suction changes on unsaturated microstructures, changes in soil micropore structure during loading, and changes in microstructure caused by chemical reactions.

[0004] Although the mercury intrusion method can be used to test pore size distribution simply and effectively, it has great limitations, such as the ink bottle effect, low-high pressure conversion, damage to pore structure caused by soil sample compressibility and freeze drying, and the limitation of mercury intrusion on pore size distribution testing. In particular, the omission of pores in the small pore size range in the high mercury pressure range results in the porosity measured by mercury intrusion being smaller than the actual porosity. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method and device for correcting a porosity distribution curve of a geotechnical material, aiming to solve the problem that the porosity measured by mercury injection method in the related art is lower than the actual porosity.

[0006] The present invention provides a method for correcting a porosity distribution curve of a geotechnical material, comprising:

[0007] Obtaining the actual porosity n0 of the soil sample, the measured porosity n of the soil sample, and the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion;

[0008] Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established:

[0009]

[0010] Wherein, μ is the minimum value r of the pore size r in the porosity distribution curve n(r) min ;σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r); a is a constant;

[0011] Based on the porosity n leak (r) of the missed pores of the soil sample when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, the constant a is solved using the following formula:

[0012]

[0013] Based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores of the soil sample that are missed when the pore size is r, a corrected porosity distribution curve n1(r) is obtained:

[0014]

[0015] The corrected porosity distribution curve is drawn based on the porosity distribution curve analytical formula n1(r).

[0016] According to the method for correcting the porosity distribution curve of geotechnical materials provided by the present invention, obtaining the actual porosity n0 of the soil sample includes:

[0017] Obtaining the volume V2 of the soil material used to prepare the soil sample;

[0018] The actual porosity n0 of the soil sample is calculated using the following formula:

[0019]

[0020] According to the method for correcting the porosity distribution curve of geotechnical materials provided by the present invention, obtaining the measured porosity n includes:

[0021] Obtaining the volume V3 of mercury pressed into the pores by mercury intrusion;

[0022] The measured porosity n of the soil sample is calculated using the following formula:

[0023]

[0024] The present invention also provides a device for correcting a porosity distribution curve of a geotechnical material, comprising:

[0025] A parameter acquisition module, used to acquire the actual porosity n0 of the soil sample and the measured porosity n of the soil sample and the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion;

[0026] The first calculation module is used to establish a calculation formula for the porosity nleakage (r) of the pores missed by the soil sample when the pore size is r based on the porosity distribution curve n(r):

[0027]

[0028] The second calculation module is used to solve the constant a using the following formula based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample:

[0029]

[0030] The third calculation module is used to calculate the corrected porosity distribution curve analytical expression n1(r) based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores of the soil sample that are missed when the pore size is r:

[0031]

[0032] An image drawing module is used to draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0033] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method for correcting the porosity distribution curve of geotechnical materials as described above are implemented.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method for correcting the porosity distribution curve of geotechnical materials as described above are implemented.

[0035] The present invention adopts the above technical solution, which has the following advantages:

[0036] The method for correcting the porosity distribution curve of geotechnical materials provided by the present invention includes a parameter acquisition step, a porosity calculation formula establishment step of missed pores, a parameter solving step, a porosity correction distribution curve calculation step and a drawing step. When executing the parameter acquisition step, the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample measured by mercury intrusion method with respect to the pore size r and the measured porosity n of the soil sample can be obtained. When executing the porosity calculation formula establishment step of missed pores, based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the missed pores of the soil sample when the pore size is r can be established: Where μ is the minimum value of the pore size r in the porosity distribution curve n(r) min ,σ=r1-r min, r1 is the value of the aperture r corresponding to the trough of the porosity distribution curve n(r), and a is a constant. When executing the parameter solution step, the porosity n leak (r) of the pores of the soil sample that are missed when the aperture is r, the actual porosity n0 of the soil sample, and the actual porosity n of the soil sample can be used to calculate the value of the porosity n. When performing the porosity correction distribution curve calculation step, the corrected porosity distribution curve can be obtained based on the porosity distribution curve n(r) and the porosity n leak (r) of the pores that are missed in the soil sample when the pore size is r. The method for correcting the porosity distribution curve of geotechnical materials provided by the present invention can quickly correct the porosity distribution curve measured by mercury injection, thereby improving the accuracy of porosity distribution.

[0037] Furthermore, the device for correcting the porosity distribution curve of geotechnical materials provided by the present invention has the same advantages as described above because the porosity distribution curve is drawn based on the method for correcting the porosity distribution curve of geotechnical materials as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 is a flow chart of a method for correcting a pore size distribution curve of a geotechnical material provided by an embodiment of the present invention;

[0040] Figure 2 is a normal distribution curve diagram provided by an embodiment of the present invention;

[0041] Figure 3 is a porosity distribution curve before and after correction provided by an embodiment of the present invention;

[0042] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention.

[0043] Reference numerals:

[0044] 810: processor; 820: communication interface; 830: memory; 840: communication bus. DETAILED DESCRIPTION

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

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] The present invention discloses a method for correcting a pore size distribution curve of a geotechnical material, comprising obtaining an actual porosity n0 of a soil sample, a porosity distribution curve n(r) of the soil sample with respect to a pore size r measured by mercury intrusion, and a measured porosity n of the soil sample, and establishing a calculation formula for the porosity nleakage(r) of pores missed by the soil sample when the pore size is r based on the above parameters: Using the formula Solve for a and finally get the corrected porosity distribution curve The method for correcting the pore size distribution curve of geotechnical materials provided by the present invention uses the porosity distribution curve measured by the mercury injection method to add the missed porosity to obtain the corrected porosity distribution curve, which can quickly correct the porosity distribution curve measured by the mercury injection method and improve the accuracy of the porosity distribution.

[0052] Combine the following Figure 1 to Figure 3 The present invention describes the method for correcting the porosity distribution curve of geomaterials.

[0053] An embodiment of the present invention provides a method for correcting a porosity distribution curve of a geotechnical material, comprising the following steps:

[0054] Step S100, obtaining the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion, and the measured porosity n of the soil sample.

[0055] Specifically, first, a saturated soil sample is prepared, and the volume V1 of the geometric body enclosed by the outer surface of the soil sample and the actual porosity n0 of the soil sample are measured. The porosity n0 is the quotient of the volume of the pores of the soil sample and the volume V1 of the geometric body enclosed by the outer surface of the soil sample. Then, the soil sample is freeze-dried and placed in a mercury injection instrument to measure the porosity distribution curve n(r) of the soil sample with respect to the pore size r. Then, the measured porosity n of the soil sample is calculated. The measured porosity n is the quotient of the volume of mercury pressed into the pores in the mercury injection experiment and the volume V1 of the geometric body enclosed by the outer surface of the soil sample.

[0056] Step S200: Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established:

[0057]

[0058] Where μ is the minimum value of the pore size r in the porosity distribution curve n(r) min ,Right now Figure 2 The horizontal coordinate corresponding to point A in the middle is σ=r1-r min , r1 is the value of the pore size r corresponding to the trough of the porosity distribution curve n(r), that is, Figure 2 The horizontal coordinate corresponding to point B, a is a constant.

[0059] Specifically, after the porosity distribution curve n(r) of the soil sample is known, a calculation formula for the porosity n of the pores that are missed in the soil sample when the pore size is r can be established:

[0060]

[0061] For soil samples, the smaller the pores inside, the more difficult it is for mercury to be pressed in, and therefore the greater the possibility of being missed. Therefore, the Gaussian distribution probability density can be used to describe the probability of missing measurement corresponding to the aperture r within a small aperture range.

[0062] Step S300, based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, and using the following formula to solve a,

[0063]

[0064] Specifically, when the actual porosity n0 of the soil sample and the measured porosity n of the soil sample measured by mercury intrusion are known, n0-n is the porosity of the soil sample that is missed. In the formula, only the constant a is an unknown number. The constant a can be solved by this formula. Finally, the porosity of the pores that are missed in the soil sample when the pore size is r is can also be calculated.

[0065] Step S400: based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores that are missed in the soil sample when the pore size is r, a corrected porosity distribution curve n1(r) is obtained.

[0066]

[0067] Specifically, after executing steps S100 to S300, the pore size r corresponds to a specific measured porosity value in the porosity distribution curve n(r). At this time, the measured porosity value n(r) corresponding to each pore size r can be added to the porosity n(r) of the missed pores corresponding to the pore size r to obtain the corrected porosity value corresponding to the corrected pore size r. That is, the analytical formula of the corrected porosity distribution curve can be:

[0068] Step S500: Draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0069] The method for correcting the porosity distribution curve of geotechnical materials provided by the present invention can quickly correct the porosity distribution curve measured by mercury injection, thereby improving the accuracy of porosity distribution.

[0070] In some embodiments of the present invention, obtaining the actual porosity n0 of the soil sample comprises the following steps:

[0071] Step S610, obtaining the volume V2 of the soil material used to prepare the soil sample;

[0072] Step S620: Calculate the actual porosity n0 of the soil sample using the following formula:

[0073]

[0074] Specifically, when making a soil sample, the volume of the soil material used can be easily obtained. For example, the mass of the soil can be obtained by weighing it, and the volume V2 of the soil material used to make the soil sample can be obtained by dividing the mass by the density of the soil material. The volume V1 of the geometric body enclosed by the outer surface of the soil material minus the volume V2 of the soil material used to make the soil sample is the volume of the pores in the soil sample, and then the formula The actual porosity n0 of the soil sample can be obtained.

[0075] In some embodiments of the present invention, obtaining the measured porosity n comprises the following steps:

[0076] Step S710, obtaining the volume V3 of mercury pressed into the pores by mercury intrusion;

[0077] Step S720: Calculate the measured porosity n of the soil sample using the following formula:

[0078]

[0079] Specifically, after the mercury is injected into the pores using the mercury injection method, the volume of the mercury injected into the pores can be easily obtained. For example, the mercury can be transported through a pipe with a fixed diameter and the flow rate of the mercury can be measured to calculate the volume V3 of the injected mercury. The volume V3 of the mercury is the measured volume of the pores. The measured porosity n of the soil sample can be obtained.

[0080] The following describes a device for correcting a porosity distribution curve of a geotechnical material and a device for drawing a porosity distribution curve of a geotechnical material provided by the present invention. The device for correcting a porosity distribution curve of a geotechnical material and the device for drawing a porosity distribution curve of a geotechnical material described below can be referred to in correspondence with the method for correcting a porosity distribution curve of a geotechnical material described above.

[0081] An embodiment of the present invention provides a device for correcting a porosity distribution curve of a geotechnical material, which is used to execute the method for correcting a pore size distribution curve of a geotechnical material as described above. The device includes a parameter acquisition module, a first calculation module, a second calculation module, a third calculation module and an image drawing module.

[0082] The parameter acquisition module is used to obtain the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion, and the measured porosity n of the soil sample.

[0083] The first calculation module is used to read the following parameters: porosity distribution curve n(r), and then use the read parameters to establish a calculation formula for the porosity nleakage(r) of the pores that are missed in the soil sample when the pore size is r:

[0084]

[0085] Wherein, μ is the minimum value r of the pore size r in the porosity distribution curve n(r) min ,σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r), and a is a constant.

[0086] The second calculation module is used to read the following parameters: the porosity of the pores that are missed in the soil sample when the pore size is r, n leak (r), the actual porosity n0 of the soil sample, and the measured porosity n of the soil sample, and establish the following formula:

[0087]

[0088] This formula can be used to solve the value of constant a. At this time, the formula Calculate the porosity nleakage (r) of the missed pores corresponding to any pore size r.

[0089] The third calculation module is used to read the following parameters: porosity distribution curve n(r) and the pore volume V of the soil sample that is missed when the pore size is r 漏 , and then use the following formula to calculate the corrected porosity distribution curve analytical formula

[0090]

[0091] The image drawing module is used to draw the corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0092] An embodiment of the present invention also provides a device for drawing a porosity distribution curve of a geotechnical material, which is used to execute the method for correcting the porosity distribution curve of the geotechnical material as described above. The drawing device includes a volume measurement module, a fourth calculation module, a fifth calculation module, a porosity distribution curve drawing module and the device for correcting the porosity distribution curve of the geotechnical material as described above.

[0093] Among them, the volume measurement module is used to measure the volume V1 of the geometric body enclosed by the outer surface of the soil sample, the volume V2 of the soil material used to make the soil sample, and the volume V3 of mercury pressed into the pores of the soil sample using the mercury injection method.

[0094] The fourth calculation module is used to calculate the actual porosity n0 of the soil sample based on the volume V1 of the geometric body enclosed by the outer surface of the soil sample and the volume V2 of the soil material used to make the soil sample using the following formula:

[0095]

[0096] The fifth calculation module is used to calculate the measured porosity n of the soil sample based on the volume V1 of the geometric body enclosed by the outer surface of the soil sample and the volume V3 of mercury pressed into the pores of the soil sample using the mercury injection method, using the following formula:

[0097]

[0098] The porosity distribution curve drawing module is used to draw the porosity distribution curve n(r) of the geomaterial with respect to the pore size r based on the mercury injection method.

[0099] After the volume V1 of the geometric body enclosed by the outer surface of the soil sample, the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample measured by mercury intrusion method about the pore size r and the actual porosity n of the soil sample are known, the porosity distribution curve n(r) is corrected using the above-mentioned correction method of the porosity distribution curve of geotechnical materials to obtain the corrected porosity distribution curve n1(r), whose analytical formula is:

[0100]

[0101] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the correction method of the geotechnical material porosity distribution curve, and the method includes:

[0102] Step S100, obtaining the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion, and the measured porosity n of the soil sample;

[0103] Step S200: Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established:

[0104]

[0105] Where μ is the minimum value of the pore size r in the porosity distribution curve n(r) min ,σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r), and a is a constant;

[0106] Step S300, based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, and using the following formula to solve a,

[0107]

[0108] Step S400: based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores that are missed in the soil sample when the pore size is r, a corrected porosity distribution curve n1(r) is obtained.

[0109]

[0110] Step S500: Draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0111] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0112] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer, the computer can execute the method for correcting the porosity distribution curve of geotechnical materials provided by the above methods, the method comprising:

[0113] Step S100, obtaining the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion, and the measured porosity n of the soil sample;

[0114] Step S200: Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established:

[0115]

[0116] Where μ is the minimum value of the pore size r in the porosity distribution curve n(r) min ,σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r), and a is a constant;

[0117] Step S300, based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, and using the following formula to solve a,

[0118]

[0119] Step S400: based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores that are missed in the soil sample when the pore size is r, a corrected porosity distribution curve n1(r) is obtained.

[0120]

[0121] Step S500: Draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0122] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the method for correcting the porosity distribution curve of geotechnical materials provided by the above methods, the method comprising:

[0123] Step S100, obtaining the actual porosity n0 of the soil sample, the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion, and the measured porosity n of the soil sample;

[0124] Step S200: Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established:

[0125]

[0126] Where μ is the minimum value of the pore size r in the porosity distribution curve n(r) min ,σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r), and a is a constant;

[0127] Step S300, based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, and using the following formula to solve a,

[0128]

[0129] Step S400: based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores that are missed in the soil sample when the pore size is r, a corrected porosity distribution curve n1(r) is obtained.

[0130]

[0131] Step S500: Draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

[0132] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0133] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for correcting a porosity distribution curve of a geotechnical material, characterized in that: include: Obtaining the actual porosity n0 of the soil sample, the measured porosity n of the soil sample, and the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion; Based on the porosity distribution curve n(r), a calculation formula for the porosity nleakage(r) of the pores missed in the soil sample when the pore size is r is established: Wherein, μ is the minimum value r of the pore size r in the porosity distribution curve n(r) min ;σ=r1-r min , r1 is the value of the pore diameter r corresponding to the trough of the porosity distribution curve n(r); a is a constant; Based on the porosity n leak (r) of the missed pores of the soil sample when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample, the constant a is solved using the following formula: Based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores of the soil sample that are missed when the pore size is r, a corrected porosity distribution curve n1(r) is obtained: The corrected porosity distribution curve is drawn based on the porosity distribution curve analytical formula n1(r).

2. The method for correcting the porosity distribution curve of geotechnical materials according to claim 1, characterized in that: Obtaining the actual porosity n0 of the soil sample includes: Obtaining the volume V2 of the soil material used to prepare the soil sample; The actual porosity n0 of the soil sample is calculated using the following formula:

3. The method for correcting the porosity distribution curve of geotechnical materials according to claim 2, characterized in that: Obtaining the measured porosity n includes: Obtaining the volume V3 of mercury pressed into the pores by mercury intrusion; The measured porosity n of the soil sample is calculated using the following formula:

4. A device for correcting a porosity distribution curve of a geotechnical material, characterized in that: include: A parameter acquisition module, used to acquire the actual porosity n0 of the soil sample and the measured porosity n of the soil sample and the porosity distribution curve n(r) of the soil sample with respect to the pore size r measured by mercury intrusion; The first calculation module is used to establish a calculation formula for the porosity nleakage (r) of the pores missed by the soil sample when the pore size is r based on the porosity distribution curve n(r): The second calculation module is used to solve the constant a using the following formula based on the porosity n leak (r) of the pores of the soil sample that are missed when the pore size is r, the actual porosity n0 of the soil sample and the measured porosity n of the soil sample: The third calculation module is used to calculate the corrected porosity distribution curve analytical expression n1(r) based on the porosity distribution curve n(r) and the porosity nleak(r) of the pores of the soil sample that are missed when the pore size is r: An image drawing module is used to draw a corrected porosity distribution curve based on the porosity distribution curve analytical formula n1(r).

5. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method for correcting the porosity distribution curve of geotechnical materials as described in any one of claims 1 to 3 are implemented.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for correcting the porosity distribution curve of geotechnical materials as claimed in any one of claims 1 to 3 are implemented.

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